Better Choice: Linear Long Chains Rather than Branched Ones to Improve Mechanical Performance of Polyethylene through Generating Shish-Kebabs

Lu-Feng Deng; Xi-Xi Zhang; Dong Zhou; Jian-Hua Tang; Jun Lei; Jun-Fang Li; Zhong-Ming Li

doi:10.1007/s10118-020-2397-7

Your Location：

Home >

Browse articles >

Better Choice: Linear Long Chains Rather than Branched Ones to Improve Mechanical Performance of Polyethylene through Generating Shish-Kebabs

ARTICLE | Updated：2020-04-14

- Better Choice: Linear Long Chains Rather than Branched Ones to Improve Mechanical Performance of Polyethylene through Generating Shish-Kebabs
- Better Choice: Linear Long Chains Rather than Branched Ones to Improve Mechanical Performance of Polyethylene through Generating Shish-Kebabs
- Chinese Journal of Polymer Science 2020年38卷第7期页码：715-729
- Affiliations：
  
  a.College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
  b.College of Chemical Engineering, Sichuan University, Chengdu 610065, China
  c.State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
- Author bio：
  
  jianhuatang@ckfc.asia (J.H.T.)
  leijun@scu.edu.cn (J.L.)
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China (Nos. 51533004, 51773135, and 21878194). We also thank Shanghai Synchrotron Radiation Facility (SSRF) for the kind help in X-ray measurements.
- DOI：10.1007/s10118-020-2397-7
  中图分类号：
- 收稿：2019-11-15，
  
  修回：2020-1-14，
  
  录用：2020-2-1，
  
  网络首发：2020-04-14，
  
  纸质出版：2020-07
- Accepted：
Scan QR Code
Deng, L. F.; Zhang, X. X.; Zhou, D.; Tang, J. H.; Lei, J.; Li, J. F.; Li, Z. M. Better choice: linear long chains rather than branched ones to improve mechanical performance of polyethylene through generating shish-kebabs. Chinese J. Polym. Sci. 2020, 38, 715–729

Lu-Feng Deng, Xi-Xi Zhang, Dong Zhou, et al. Better Choice: Linear Long Chains Rather than Branched Ones to Improve Mechanical Performance of Polyethylene through Generating Shish-Kebabs[J]. Chinese Journal of Polymer Science, 2020, 38(7): 715-729.
Deng, L. F.; Zhang, X. X.; Zhou, D.; Tang, J. H.; Lei, J.; Li, J. F.; Li, Z. M. Better choice: linear long chains rather than branched ones to improve mechanical performance of polyethylene through generating shish-kebabs. Chinese J. Polym. Sci. 2020, 38, 715–729 DOI： 10.1007/s10118-020-2397-7.

Lu-Feng Deng, Xi-Xi Zhang, Dong Zhou, et al. Better Choice: Linear Long Chains Rather than Branched Ones to Improve Mechanical Performance of Polyethylene through Generating Shish-Kebabs[J]. Chinese Journal of Polymer Science, 2020, 38(7): 715-729. DOI： 10.1007/s10118-020-2397-7.

摘要

Abstract

We utilized two structurally different long chains (linear and branched ultra-high molecular weight polyethylene) to reveal the dependence of flow-induced crystallization on long chain architecture

and prepared two bi-disperse systems of 98 wt% short chain and 2 wt% long chain. A flow field was applied to the bi-disperse polyethylene melt by a modified injection-molding machine

known as oscillation shear injection molding (OSIM). For the first time

the structural influence of long chains on flow-induced shish-kebab formation was systematically investigated. For the intermediate layer of OSIM samples

the branched long chains were better than the linear long chains at inducing shish-kebab formation

agreeing with the reported literatures

because the branches can maintain their oriented conformations longer. But unexpectedly

the reverse is the case for the core layer of OSIM samples

where the shear flow was much weaker than the intermediate layer. To understand the unexpected phenomenon

the lifetime of shishes induced by different long chains was compared. Result demonstrated that the linear-induced shishes possessed higher thermal stability than the branched-induced ones so that the linear-induced shishes could survive in the core layer of OSIM samples. Additionally

unlike other methods for flow-induced crystallization

OSIM could create samples for measuring mechanical properties

and thus offer the chance to reveal the relationship between structure and performance. The mechanical results demonstrated that both long chains remarkably enhanced the mechanical properties because of the significant promoting effect of long chains and intense flow fields on shish-kebab formation. However

the linear long chains induced more stable and flawless shishes with higher tensile strength and modulus (80.4 and 1613.5 MPa

respectively) than the branched ones (74.4 and 1489.3 MPa). Our research not only helps elucidate the mechanism of shish-kebab formation but also provides a better choice to reinforce polymers by adding long chains with suitable structure.

关键词

Keywords

references

Pennings, A. J.; Kiel, A. M. . Fractionation of polymers by crystallization from solution. III. On the morphology of fibrillar polyethylene crystals grown in solution . Colloid Polym. Sci. , 1965 . 205 160 - 162 . .

Keller, A. . Polymer crystals . Rep. Prog. Phys. , 1968 . 31 623 - 704 . DOI: 10.1088/0034-4885/31/2/304 http://doi.org/10.1088/0034-4885/31/2/304 .

Zwijnenburg, A.; Pennings, A. J. . Longitudinal growth of polymer crystals from flowing solutions. III. Polyethylene crystals in Couette flow . Colloid Polym. Sci. , 1976 . 254 868 - 881 . DOI: 10.1007/BF01775411 http://doi.org/10.1007/BF01775411 .

Somani, R. H.; Yang, L.; Hsiao, B. S.; Agarwal, P. K.; Fruitwala, H. A.; Tsou, A. H. . Shear-induced precursor structures in isotactic polypropylene melt by in-situ rheo-SAXS and rheo-WAXD studies . Macromolecules , 2002 . 35 9096 - 9104 . DOI: 10.1021/ma020785o http://doi.org/10.1021/ma020785o .

Seki, M.; Thurman, D. W.; Oberhauser, J. P.; Kornfield, J. A. . Shear-mediated crystallization of isotactic polypropylene: the role of long chain-long chain overlap . Macromolecules , 2002 . 35 2583 - 2594 . DOI: 10.1021/ma011359q http://doi.org/10.1021/ma011359q .

Matsuura, T.; Murakami, M.; Inoue, R.; Nishida, K.; Ogawa, H.; Ohta, N.; Kanaya, T. . Microbeam wide-angle X-ray scattering study on precursor of shish kebab. Effects of shear rate and annealing on inner structure . Macromolecules , 2015 . 48 3337 - 3343 . DOI: 10.1021/acs.macromol.5b00372 http://doi.org/10.1021/acs.macromol.5b00372 .

Mackley, M. R.; Keller, A. . Flow induced crystallization of polyethylene melts . Polymer , 1973 . 14 16 - 20 . DOI: 10.1016/0032-3861(73)90073-6 http://doi.org/10.1016/0032-3861(73)90073-6 .

Keller, A.; Kolnaar, J. W. H. . Chain extension and orientation: fundamentals and relevance to processing and products orientational phenomena in polymers . Steinkopff , 1993 . 81 - 102 . .

Jerschow, P.; JaneschitzKriegl, H. . The role of long molecules and nucleating agents in shear induced crystallization of isotactic polypropylenes . Int. Polym. Proc. , 1997 . 12 72 - 77 . DOI: 10.3139/217.970072 http://doi.org/10.3139/217.970072 .

Nogales, A.; Hsiao, B. S.; Somani, R. H. . Shear-induced crystallization of isotactic polypropylene with different molecular weight distributions: in situ small-and wide-angle X-ray scattering studies . Polymer , 2001 . 42 5247 - 5256 . DOI: 10.1016/S0032-3861(00)00919-8 http://doi.org/10.1016/S0032-3861(00)00919-8 .

Zhao, Z. H.; Wang, F. H.; Zhou, M.; Shen, K. Z.; Zhang, J. . Altering the hierarchical morphology distribution of injection molded polyethylene by the introduction of crosslink network and periodical shear . Chinese J. Polym. Sci. , 2016 . 34 1479 - 1489 . DOI: 10.1007/s10118-016-1865-6 http://doi.org/10.1007/s10118-016-1865-6 .

Xu, Z. B.; Su, L. Y.; Wang, P. F.; Peng, M. . Effect of oscillatory shear on the mechanical properties and crystalline morphology of linear low density polyethylene . Chinese J. Polym. Sci. , 2015 . 33 1114 - 1124 . DOI: 10.1007/s10118-015-1663-6 http://doi.org/10.1007/s10118-015-1663-6 .

Jiang, K.; Yu, F. L.; Su, R.; Yang, J. H.; Zhou, T. N.; Gao, J.; Deng, H.; Wang, K.; Zhang, Q.; Chen, F.; Fu, Q. . High speed injection molding of high density polyethylene-effects of injection speed on structure and properties . Chinese J. Polym. Sci. , 2011 . 29 456 - 464 . DOI: 10.1007/s10118-011-1049-3 http://doi.org/10.1007/s10118-011-1049-3 .

Keum, J. K.; Zuo, F.; Hsiao, B. S. . Formation and stability of shear-induced shish-kebab structure in highly entangled melts of UHMWPE/HDPE blends . Macromolecules , 2008 . 41 4766 - 4776 . DOI: 10.1021/ma800063e http://doi.org/10.1021/ma800063e .

Yang, L.; Somani, R. H.; Sics, I.; Hsiao, B. S.; Kolb, R.; Fruitwala, H.; Ong, C. . Shear-induced crystallization precursor studies in model polyethylene blends by in-situ rheo-SAXS and rheo-WAXD . Macromolecules , 2004 . 37 4845 - 4859 . DOI: 10.1021/ma049925f http://doi.org/10.1021/ma049925f .

Bashir, Z.; Odell, J. A.; Keller, A. . Stiff and strong polyethylene with shish kebab morphology by continuous melt extrusion . J. Mater. Sci. , 1986 . 21 3993 - 4002 . DOI: 10.1007/PL00020271 http://doi.org/10.1007/PL00020271 .

Matsuba, G.; Sakamoto, S.; Ogino, Y.; Nishida, K.; Kanaya, T. . Crystallization of polyethylene blends under shear flow. Effects of crystallization temperature and ultrahigh molecular weight component . Macromolecules , 2007 . 40 7270 - 7275 . DOI: 10.1021/ma062842+ http://doi.org/10.1021/ma062842+ .

Ogino, Y.; Fukushima, H.; Matsuba, G.; Takahashi, N.; Nishida, K.; Kanaya, T. . Effects of high molecular weight component on crystallization of polyethylene under shear flow . Polymer , 2006 . 47 5669 - 5677 . DOI: 10.1016/j.polymer.2005.08.102 http://doi.org/10.1016/j.polymer.2005.08.102 .

Gabriel, C.; Kaschta, J.; Munstedt, H. . Influence of molecular structure on rheological properties of polyethylenes . Rheol. Acta. , 1998 . 37 7 - 20 . DOI: 10.1007/s003970050086 http://doi.org/10.1007/s003970050086 .

Kessner, U.; Kaschta, J.; Stadler, F. J.; Duff, C. S. L.; Drooghaag, X.; Munstedt, H. . Thermorheological behavior of various short-and long-chain branched polyethylenes and their correlations with the molecular structure . Macromolecules , 2010 . 43 7341 - 7350 . DOI: 10.1021/ma100705f http://doi.org/10.1021/ma100705f .

Ning, W.; Zhu, W. X.; Zhang, B. Q.; Li, C. C.; Liu, C. Y.; Wang, D. J. . Effect of chemical structure of polycarbonates on entanglement spacing . Chinese J. Polym. Sci. , 2012 . 30 343 - 349 . DOI: 10.1007/s10118-012-1144-0 http://doi.org/10.1007/s10118-012-1144-0 .

Milner, S. T.; McLeish, T. C. B. . Reptation and contour-length fluctuations in melts of linear polymers . Phys. Rev. Lett. , 1998 . 81 725 - 728 . DOI: 10.1103/PhysRevLett.81.725 http://doi.org/10.1103/PhysRevLett.81.725 .

de Gennes, P. G. . Coil-stretch transition of dilute flexible polymers under ultrahigh velocity gradients . J. Chem. Phys. , 1974 . 60 5030 - 5042 . DOI: 10.1063/1.1681018 http://doi.org/10.1063/1.1681018 .

Edwards, S. F. . The statistical mechanics of polymerized material . Proc. Phys. Soc. , 1967 . 92 9 - 16 . DOI: 10.1088/0370-1328/92/1/303 http://doi.org/10.1088/0370-1328/92/1/303 .

Zhao, B. J.; Li, X. Y.; Huang, Y. J.; Cong, Y. H.; Ma, Z.; Shao, C. G.; An, H. N.; Yan, T. Z.; Li, L. B. . Inducing crystallization of polymer through stretched network . Macromolecules , 2009 . 42 1428 - 1432 . DOI: 10.1021/ma802679h http://doi.org/10.1021/ma802679h .

Brown, E.; Willms, R.; Rae, P.; Cady, C.; Vecchio, K.; Flowers, J.; Martinez, M. . Influence of molecular conformation on the constitutive response of polyethylene: a comparison of HDPE, UHMWPE, and PEX . Exp. Mech. , 2007 . 47 381 - 393 . DOI: 10.1007/s11340-007-9045-9 http://doi.org/10.1007/s11340-007-9045-9 .

Yang, H. R.; Lei, J.; Li, L. B.; Fu, Q.; Li, Z. M. . Formation of interlinked shish-kebabs in injection-molded polyethylene under the coexistence of lightly cross-linked chain network and oscillation shear flow . Macromolecules , 2012 . 45 6600 - 6610 . DOI: 10.1021/ma300974w http://doi.org/10.1021/ma300974w .

Zhou, D.; Yang, S. G.; Lei, J.; Hsiao, B. S.; Li, Z. M. . Role of stably entangled chain network density in shish-kebab formation in polyethylene under an intense flow field . Macromolecules , 2015 . 48 6652 - 6661 . DOI: 10.1021/acs.macromol.5b01402 http://doi.org/10.1021/acs.macromol.5b01402 .

Carella, J. M.; Gotro, J. T.; Graessley, W. W. . Thermorheological effects of long-chain branching in entangled polymer melts . Macromolecules , 1986 . 19 659 - 667 . DOI: 10.1021/ma00157a031 http://doi.org/10.1021/ma00157a031 .

Stadler, F. J.; Kaschta, J.; Munstedt, H. . Thermorheological behavior of various long-chain branched polyethylenes . Macromolecules , 2008 . 41 1328 - 1333 . DOI: 10.1021/ma702367a http://doi.org/10.1021/ma702367a .

Frischknecht, A. L.; Milner, S. T.; Pryke, A.; Young, R. N.; Hawkins, R.; McLeish, T. C. B. . Rheology of three-arm asymmetric star polymer melts . Macromolecules , 2002 . 35 4801 - 4820 . DOI: 10.1021/ma0101411 http://doi.org/10.1021/ma0101411 .

Zamponi, M.; Pyckhout-Hintzen, W.; Wischnewski, A.; Monkenbusch, M.; Willner, L.; Kali, G.; Richter, D. . Molecular observation of branch point motion in star polymer melts . Macromolecules , 2010 . 43 518 - 524 . DOI: 10.1021/ma9017185 http://doi.org/10.1021/ma9017185 .

Agarwal, P. K.; Somani, R. H.; Weng, W. Q.; Mehta, A.; Yang, L.; Ran, S. F.; Liu, L. Z.; Hsiao, B. S. . Shear-induced crystallization in novel long chain branched polypropylenes by in situ rheo-SAXS and-WAXD . Macromolecules , 2003 . 36 5226 - 5235 . DOI: 10.1021/ma034154l http://doi.org/10.1021/ma034154l .

Fang, H. G.; Zhang, Y. Q.; Bai, J.; Wang, Z. G. . Shear-induced nucleation and morphological evolution for bimodal long chain branched polylactide . Macromolecules , 2013 . 46 6555 - 6565 . DOI: 10.1021/ma4012126 http://doi.org/10.1021/ma4012126 .

Zhang, X. X.; Yang, S. G.; Hua, W. Q.; Lin, J. M.; Lei, J.; Bian, F. G.; Xu, L.; Li, Z. M. . Role of pressure in flow-induced shish-kabab in binary blend of long- and short-chain polyethylenes . Polym. Cryst. , 2019 . 2 e10059 .

Zhang, Z. C.; Zhang, R.; Huang, Y. F.; Lei, J.; Chen, Y. H.; Tang, J. H.; Li, Z. M. . Efficient utilization of atactic polypropylene in its isotactic polypropylene blends via “structuring” processing . Ind. Eng. Chem. Res. , 2014 . 53 10144 - 10154 . DOI: 10.1021/ie5012867 http://doi.org/10.1021/ie5012867 .

Chen, Y. H.; Zhong, G. J.; Wang, Y.; Li, Z. M.; Li, L. B. . Unusual tuning of mechanical properties of isotactic polypropylene using counteraction of shear flow and β -nucleating agent on β -form nucleation . Macromolecules , 2009 . 42 4343 - 4348 . DOI: 10.1021/ma900411f http://doi.org/10.1021/ma900411f .

Ballard, D. G. H.; Cheshier, P.; Longman, G. W.; Schelten, J. . Small-angle neutron scattering studies of isotropic polypropylene . Polymer , 1978 . 19 379 - 385 . DOI: 10.1016/0032-3861(78)90241-0 http://doi.org/10.1016/0032-3861(78)90241-0 .

Picken, S. J.; Aerts, J.; Visser, R.; Northolt, M. G. . Structure and rheology of aramid solutions: X-ray scattering measurements . Macromolecules , 1990 . 23 3849 - 3854 . DOI: 10.1021/ma00218a021 http://doi.org/10.1021/ma00218a021 .

Kitade, S.; Asuka, K.; Akiba, I.; Sanada, Y.; Sakurai, K.; Masunaga, H. . Shear-induced pre-crystallization structures of long chain branched polypropylene under steady shear flow near the melting temperature . Polymer , 2013 . 54 246 - 257 . DOI: 10.1016/j.polymer.2012.10.048 http://doi.org/10.1016/j.polymer.2012.10.048 .

Bustos, F.; Cassagnau, P.; Fulchiron, R. . Effect of molecular architecture on quiescent and shear-induced crystallization of polyethylene . J. Polym. Sci., Part B: Polym. Phys. , 2006 . 44 1597 - 1607 . DOI: 10.1002/polb.20820 http://doi.org/10.1002/polb.20820 .

Somani, R. H.; Hsiao, B. S.; Nogales, A.; Fruitwala, H.; Srinivas, S.; Tsou, A. H. . Structure development during shear flow induced crystallization of i -PP: in situ wide-angle X-ray diffraction study . Macromolecules , 2001 . 34 5902 - 5909 . DOI: 10.1021/ma0106191 http://doi.org/10.1021/ma0106191 .

Somani, R. H.; Yang, L.; Hsiao, B. S.; Sun, T.; Pogodina, N. V.; Lustiger, A. . Shear-induced molecular orientation and crystallization in isotactic polypropylene: effects of the deformation rate and strain . Macromolecules , 2005 . 38 1244 - 1255 . DOI: 10.1021/ma048285d http://doi.org/10.1021/ma048285d .

Cai, J. L.; Hsiao, B. S.; Gross, R. A. . Real-time structure changes during uniaxial stretching of poly( ω -pentadecalactone) by in situ synchrotron WAXD/SAXS techniques . Macromolecules , 2011 . 44 3874 - 3883 . DOI: 10.1021/ma102949h http://doi.org/10.1021/ma102949h .

Wang, Z. P.; Huang, Y. F.; Xu, J. Z.; Niu, B.; Zhang, X. L.; Zhong, G. J.; Xu, L.; Li, Z. M. . Injection-molded hydroxyapatite/polyethylene bone-analogue biocomposites via structure manipulation . J. Mater. Chem. B. , 2015 . 3 7585 - 7593 . DOI: 10.1039/C5TB00643K http://doi.org/10.1039/C5TB00643K .

Ye, L.; Li, H.; Qiu, Z.; Yan, S. . The melt-recrystallization behavior of highly oriented α - i PP fibers embedded in a HIPS matrix . Phys. Chem. Chem. Phys. , 2015 . 17 7576 - 7580 . DOI: 10.1039/C4CP05910G http://doi.org/10.1039/C4CP05910G .

Kalay, G.; Kalay, C. . In-situ microfibrillation of polystyrene (PS)/polybutene-1(PB-1) composites prepared via melt drawing: morphological evolution and properties . J. Polym. Sci., Part B: Polym. Phys. , 2002 . 40 1828 - 1834 . DOI: 10.1002/polb.10246 http://doi.org/10.1002/polb.10246 .

Balzano, L.; Kukalyekar, N.; Rastogi, S.; Peters, G. W. M.; Chadwick, J. C. . Crystallization and dissolution of flow-induced precursors . Phys. Rev. Lett. , 2008 . 100 048302 DOI: 10.1103/PhysRevLett.100.048302 http://doi.org/10.1103/PhysRevLett.100.048302 .

Hsiao, B. S.; Yang, L.; Somani, R. H.; Avila-Orta, C. A.; Zhu, L. . Unexpected shish-kebab structure in a sheared polyethylene melt . Phys. Rev. Lett. , 2005 . 94 117802 DOI: 10.1103/PhysRevLett.94.117802 http://doi.org/10.1103/PhysRevLett.94.117802 .

Liang, S.; Wang, K.; Tang, C. Y.; Zhang, Q.; Du, R. N.; Fu, Q. . Unexpected molecular weight dependence of shish-kebab structure in the oriented linear low density polyethylene/high density polyethylene blends . J. Chem. Phys. , 2008 . 128 174902 DOI: 10.1063/1.2904561 http://doi.org/10.1063/1.2904561 .

Baker, A. M. E.; Windle, A. H. . The effects of branching and fibre drawing on the crystal structure of polyethylene . Polymer , 2001 . 42 651 - 665 . DOI: 10.1016/S0032-3861(00)00363-3 http://doi.org/10.1016/S0032-3861(00)00363-3 .

Hill, M. J.; Barham, P. J.; Keller, A. . On the hairdressing of shish-kebabs . Colloid Polym. Sci. , 1980 . 258 1023 - 1037 . DOI: 10.1007/BF01382398 http://doi.org/10.1007/BF01382398 .

Cavallo, D.; Azzurri, F.; Balzano, L.; Funari, S. S.; Alfonso, G. C. . Flow memory and stability of shear-induced nucleation precursors in isotactic polypropylene . Macromolecules , 2010 . 43 9394 - 9400 . DOI: 10.1021/ma1020193 http://doi.org/10.1021/ma1020193 .

Li, L. Y.; Li, C. Y.; Ni, C. Y.; Rong, L. X.; Hsiao, B. . Structure and crystallization behavior of Nylon 66/multi-walled carbon nanotube nanocomposites at low carbon nanotube contents . Polymer , 2007 . 48 3452 - 3460 . DOI: 10.1016/j.polymer.2007.04.030 http://doi.org/10.1016/j.polymer.2007.04.030 .

Men, Y. F.; Strobl, G. . Critical strains determining the yield behavior of s-PP* . J. Macromol. Sci., Part B: Phys. , 2001 . 40 775 - 796 . DOI: 10.1081/MB-100107561 http://doi.org/10.1081/MB-100107561 .

Men, Y. F.; Rieger, J.; Strobl, G. . Role of the entangled amorphous network in tensile deformation of semicrystalline polymers . Phys. Rev. Lett. , 2003 . 91 095502 DOI: 10.1103/PhysRevLett.91.095502 http://doi.org/10.1103/PhysRevLett.91.095502 .

Xu, L.; Chen, C.; Zhong, G. J.; Lei, J.; Xu, J. Z.; Hsiao, B. S.; Li, Z. M. . Tuning the superstructure of ultrahigh-molecular-weight polyethylene/low-molecular-weight polyethylene blend for artificial joint application . ACS Appl. Mater. Interfaces , 2012 . 4 1521 - 1529 . DOI: 10.1021/am201752d http://doi.org/10.1021/am201752d .

Kanaya, T.; Matsuba, G.; Ogino, Y.; Nishida, K.; Shimizu, H. M.; Shinohara, T.; Oku, T.; Suzuki, J.; Otomo, T. . Hierarchic structure of shish-kebab by neutron scattering in a wide Q range . Macromolecules , 2007 . 40 3650 - 3654 . DOI: 10.1021/ma062606z http://doi.org/10.1021/ma062606z .

Kimata, S.; Sakurai, T.; Nozue, Y.; Kasahara, T.; Yamaguchi, N.; Karino, T.; Shibayama, M.; Kornfield, J. A. . Molecular basis of the shish-kebab morphology in polymer crystallization . Science , 2007 . 316 1014 - 1017 . DOI: 10.1126/science.1140132 http://doi.org/10.1126/science.1140132 .

Azzurri, F.; Alfonso, G. C. . Insights into formation and relaxation of shear-induced nucleation precursors in isotactic polystyrene . Macromolecules , 2008 . 41 1377 - 1383 . DOI: 10.1021/ma071475e http://doi.org/10.1021/ma071475e .

Janeschitz-Kriegl, H.; Eder, G. . Shear induced crystallization, a relaxation phenomenon in polymer melts: a recollection . J. Macromol. Sci., Part B: Phys. , 2007 . 46 591 - 601 . DOI: 10.1080/00222340701257984 http://doi.org/10.1080/00222340701257984 .

Hamad, F. G.; Colby, R. H.; Milner, S. T. . Lifetime of flow-induced precursors in isotactic polypropylene . Macromolecules , 2015 . 48 7286 - 7299 . DOI: 10.1021/acs.macromol.5b01408 http://doi.org/10.1021/acs.macromol.5b01408 .

Shen, B.; Liang, Y.; Kornfield, J. A.; Han, C. C. . Mechanism for shish formation under shear flow: an interpretation from an in situ morphological study . Macromolecules , 2013 . 46 1528 - 1542 . DOI: 10.1021/ma3023958 http://doi.org/10.1021/ma3023958 .

Zhao, Y.; Hayasaka, K.; Matsuba, G.; Ito, H. . In situ observations of flow-induced precursors during shear flow . Macromolecules , 2012 . 46 172 - 178 . .

Na, B.; Wang, Y.; Zhang, Q.; Fu, Q. . Shish and its relaxation dependence of re-crystallization of isotactic polypropylene from an oriented melt in the blends with high-density polyethylene . Polymer , 2004 . 45 6245 - 6260 . DOI: 10.1016/j.polymer.2004.07.016 http://doi.org/10.1016/j.polymer.2004.07.016 .

Cui, K.; Ma, Z.; Wang, Z.; Ji, Y.; Liu, D.; Huang, N.; Chen, L.; Zhang, W.; Li, L. . Kinetic process of shish formation: from stretched network to stabilized nuclei . Macromolecules , 2015 . 48 5276 - 5285 . DOI: 10.1021/acs.macromol.5b00819 http://doi.org/10.1021/acs.macromol.5b00819 .

An, H.; Li, X.; Geng, Y. . Shear-induced conformational ordering, relaxation, and crystallization of isotactic polypropylene . J. Phys. Chem. B. , 2008 . 112 12256 - 12262 . DOI: 10.1021/jp802511b http://doi.org/10.1021/jp802511b .

Patil, N.; Balzano, L.; Portale, G.; Rastogi, S. . A study on the chain-particle interaction and aspect ratio of nanoparticles on structure development of a linear polymer . Macromolecules , 2010 . 43 6749 - 6759 . DOI: 10.1021/ma100636v http://doi.org/10.1021/ma100636v .

Phillips, A. W.; Bhatia, A.; Zhu, P. . Shish formation and relaxation in sheared isotactic polypropylene containing nucleating particles . Macromolecules , 2011 . 44 3517 - 3528 . DOI: 10.1021/ma200040s http://doi.org/10.1021/ma200040s .

Ma, Z.; Balzano, L.; Peters, G. W. M. . Dissolution and re-emergence of flow-induced shish in polyethylene with a broad molecular weight distribution . Macromolecules , 2016 . 49 2724 - 2730 . DOI: 10.1021/acs.macromol.6b00333 http://doi.org/10.1021/acs.macromol.6b00333 .

Das, C.; Inkson, N. J.; Read, D. J.; Kelmanson, M. A.; McLeish, T. C. . Computational linear rheology of general branch-on-branch polymers . J. Rheol. , 2006 . 50 207 - 234 . DOI: 10.1122/1.2167487 http://doi.org/10.1122/1.2167487 .

Bero, C.; Roland, C. . Terminal relaxations in linear and three-arm star polyisoprenes . Macromolecules , 1996 . 29 1562 - 1568 . DOI: 10.1021/ma951439s http://doi.org/10.1021/ma951439s .

Heeley, E. L.; Fernyhough, C. M.; Graham, R. S.; Olmsted, P. D.; Inkson, N. J.; Embery, J.; Groves, D. J.; McLeish, T. C.; Morgovan, A. C.; Meneau, F. . Shear-induced crystallization in blends of model linear and long-chain branched hydrogenated polybutadienes . Macromolecules , 2006 . 39 5058 - 5071 . DOI: 10.1021/ma0606307 http://doi.org/10.1021/ma0606307 .

Janeschitz-Kriegl, H.; Ratajski, E.; Stadlbauer, M. . Flow as an effective promotor of nucleation in polymer melts: a quantitative evaluation . Rheol. Acta , 2003 . 42 355 - 364 . DOI: 10.1007/s00397-002-0247-x http://doi.org/10.1007/s00397-002-0247-x .

浏览量

124

Downloads

CSCD

文章被引用时，请邮件提醒。

Submit

工具集

关联资源

Crosslinking Kinetics of Polyethylene with Small Amount of Peroxide and Its Influence on the Subsequent Crystallization Behaviors

Phase Structure and Crystallization Behavior of Polyethylene in Its Blends with cis-1,4-Butadiene Rubber

Upgrading Commercially Available Polyethylene to High-value Materials with Strong Mechanical Performance and Hydrophilicity by Blending with Ethylene/meta-Methoxystyrene Copolymers

Two-way Shape Memory Effect of Polycaprolactone-based Polyurethane via Synergistic Role of Hydrogen Bonding and Crystallization Tuned by Malic Acid

Modulating Molecular Weight of Polyethylenes from Oligomer to Polymer Using Highly Thermal Stable Cationic α-Diimine Palladium Complexes