Molecular Mobility in the Amorphous Phase Determines the Critical Strain of Fibrillation in the Tensile Stretching of Polyethylene

Rui Li; Guo-Xing Yang; Ya-Nan Qin; Li Liu; Zhi-Yong Jiang

doi:10.1007/s10118-020-2362-5

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Molecular Mobility in the Amorphous Phase Determines the Critical Strain of Fibrillation in the Tensile Stretching of Polyethylene

ARTICLE | Updated：2019-11-27

- Molecular Mobility in the Amorphous Phase Determines the Critical Strain of Fibrillation in the Tensile Stretching of Polyethylene
- Molecular Mobility in the Amorphous Phase Determines the Critical Strain of Fibrillation in the Tensile Stretching of Polyethylene
- Chinese Journal of Polymer Science 2020年38卷第7期页码：740-747
- Affiliations：
  
  a.School of Chemistry and Chemical Engineering, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150001, China
  b.Daqing Petrochemical Research Center, Petrochemical Research Institute, China National Petroleum Corporation, Daqing 163714, China
  c.State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- Author bio：
  
  jiangzhy@ciac.ac.cn
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China (No. 21674119) and Jilin Scientific and Technological Development Program (No. 20180519001JH). We thank Prof. Yongfeng Men and Dr. Victor Litvinov for helpful discussions.
- DOI：10.1007/s10118-020-2362-5
  中图分类号：
- 收稿：2019-09-11，
  
  修回：2019-10-5，
  
  录用：2019-10-8，
  
  网络首发：2019-11-27，
  
  纸质出版：2020-07
- Accepted：
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Li, R.; Yang, G. X.; Qin, Y. N.; Liu, L.; Jiang, Z. Y. Molecular mobility in the amorphous phase determines the critical strain of fibrillation in the tensile stretching of polyethylene. Chinese J. Polym. Sci. 2020, 38, 740–747

Rui Li, Guo-Xing Yang, Ya-Nan Qin, et al. Molecular Mobility in the Amorphous Phase Determines the Critical Strain of Fibrillation in the Tensile Stretching of Polyethylene[J]. Chinese Journal of Polymer Science, 2020, 38(7): 740-747.
Li, R.; Yang, G. X.; Qin, Y. N.; Liu, L.; Jiang, Z. Y. Molecular mobility in the amorphous phase determines the critical strain of fibrillation in the tensile stretching of polyethylene. Chinese J. Polym. Sci. 2020, 38, 740–747 DOI： 10.1007/s10118-020-2362-5.

Rui Li, Guo-Xing Yang, Ya-Nan Qin, et al. Molecular Mobility in the Amorphous Phase Determines the Critical Strain of Fibrillation in the Tensile Stretching of Polyethylene[J]. Chinese Journal of Polymer Science, 2020, 38(7): 740-747. DOI： 10.1007/s10118-020-2362-5.

摘要

Abstract

The microstructural development of bimodal high density polyethylene subjected to tensile deformation was investigated as a function of strain after annealing at different temperatures by means of a scanning synchrotron small angle X-ray scattering (SAXS) technique. Two different deformation mechanisms were activated in sequence upon tensile deformation: intralamellar slipping of crystalline blocks dominates the deformation behavior at small deformations whereas a stress-induced crystalline block fragmentation and recrystallization process occurs at a critical strain yielding new crystallites with the molecular chains preferentially oriented along the drawing direction. The critical strain associated with the lamellar-to-fibrillar transition was found to be

. 0.9 in bimodal sample

which is significantly larger than that observed for unimodal high-density polyethylene (0.4). This observation is primarily due to the fact that the bimodal sample possesses a greater mobility of the amorphous phase and thereby a reduced modulus of the entangled amorphous network. The conclusion of the mobility of the amorphous phase as a determining factor for the critical strain was further proven by the

H-NMR

relaxation time. All these findings contribute to our understanding of the excellent slow crack growth resistance of bimodal polyethylene for pipe application.

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Keywords

references

Bartczak, Z . Effect of chain entanglements on plastic deformation behavior of linear polyethylene . Macromolecules , 2005 . 38 7702 - 7713 . DOI: 10.1021/ma050815y http://doi.org/10.1021/ma050815y .

Failla, M. D.; Mandelkern, L . Tensile properties of mixtures of linear polyethylene and random ethylene copolymers having similar molecular weights . Macromolecules , 1993 . 26 7167 - 7175 . DOI: 10.1021/ma00078a009 http://doi.org/10.1021/ma00078a009 .

Strobl, G. The physics of polymers . Springer, Berlin, 2006 .

Men, Y.; Strobl, G . Critical strains determining the yield behavior of s -PP . J. Macromol. Sci. Phys. , 2001 . B40 775 - 796 . .

Men, Y. F.; Rieger, J.; Strobl, G . Role of the entangled amorphous networks 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 .

Peterlin, A . Molecular model of drawing polyethylene and polypropylene . J. Mater. Sci. , 1971 . 6 490 - 508 . DOI: 10.1007/BF00550305 http://doi.org/10.1007/BF00550305 .

Li, L. B . In situ synchrotron radiation techniques: watching deformation-induced structural evolutions of polymers . Chinese J. Polym. Sci. , 2018 . 36 1093 - 1102 . DOI: 10.1007/s10118-018-2169-9 http://doi.org/10.1007/s10118-018-2169-9 .

Jiang, Z. Y.; Tang, Y. J.; Men, Y. F.; Enderle, H.; Lilge, D.; Roth, S.; Gehrke, R.; Rieger, J . Structural evolution of tensile deformed high-density polyethylene during annealing: scanning synchrotron small angle X-ray scattering study . Macromolecules , 2007 . 40 7263 - 7269 . DOI: 10.1021/ma0627572 http://doi.org/10.1021/ma0627572 .

Jiang, Z. Y.; Tang, Y. J.; Rieger, J.; Enderle, H.; Lilge, D.; Roth, S.; Gehrke, R.; Heckmann, W.; Men, Y. F . Two lamellar to fibrillar transitions in the tensile deformation of high-density polyethylene . Macromolecules , 2010 . 43 4727 - 4732 . DOI: 10.1021/ma100303d http://doi.org/10.1021/ma100303d .

Men, Y.; Strobl, G . From crystalline block slips to dominance of network stretching—mechanisms of tensile deformation in semi-crystalline polymers . Chinese J. Polym. Sci. , 2002 . 20 161 - 170 . .

Jiang, Z. Y.; Tang, Y. J.; Rieger, J.; Enderle, H. F.; Lilge, D.; Roth, S. V.; Gehrke, R.; Wu, Z.; Li, Z.; Men, Y. F . Structural evolution of tensile deformed high-density polyethylene at elevated temperatures: Scanning synchrotron small- and wide-angle X-ray scattering studies . Polymer , 2009 . 50 4101 - 4111 . DOI: 10.1016/j.polymer.2009.06.063 http://doi.org/10.1016/j.polymer.2009.06.063 .

Bowden, P. B.; Young, R. J . Deformation mechanisms in crystalline polymers . J. Mater. Sci. , 1974 . 9 2034 - 2051 . DOI: 10.1007/BF00540553 http://doi.org/10.1007/BF00540553 .

Galeski, A.; Bartczak, Z.; Argon, A. S.; Cohen, R. E . Morphological alterations during texture-producing plastic plane strain compression of high-density polyethylene . Macromolecules , 1992 . 25 5705 - 5718 . DOI: 10.1021/ma00047a023 http://doi.org/10.1021/ma00047a023 .

Flory, P. J.; Yoon, D. Y . Molecular morphology in semicrystalline polymers . Nature , 1978 . 272 226 - 229 . DOI: 10.1038/272226a0 http://doi.org/10.1038/272226a0 .

Wang, Y. T.; Jiang, Z. Y.; Wu, Z. H.; Men, Y. F . Tensile deformation of polybutene-1 with stable form I at elevated temperature . Macromolecules , 2013 . 46 518 - 522 . DOI: 10.1021/ma302389j http://doi.org/10.1021/ma302389j .

Wu, W.; Wignal, G. D.; Mandelkern, L . A SANS study of the plastic deformation mechanism in polyethylene . Polymer , 1992 . 33 4137 - 4140 . DOI: 10.1016/0032-3861(92)90617-6 http://doi.org/10.1016/0032-3861(92)90617-6 .

Keller, A.; Pope, D. P . Identification of structural processes in deformation of oriented polyethylene . J. Mater. Sci. , 1971 . 6 453 - 478 . DOI: 10.1007/BF00550302 http://doi.org/10.1007/BF00550302 .

Peterlin, A.; Meinel, G . Small angle X-ray diffraction studies of plastically deformed polyethylene III. Small draw ratios . Makromol. Chem. , 1971 . 142 227 - 240 . .

Meinel, G.; Peterlin, A . Plastic deformation of polyethylene . Colloid Polym. Sci. , 1970 . 242 1151 - 1160 . .

Hiss, R.; Hobeika, S.; Lynn, C.; Strobl, G . Network stretching, slip processes, and fragmentation of crystallites during uniaxial drawing of polyethylene and related copolymers. A comparative study . Macromolecules , 1999 . 32 4390 - 4403 . .

Sun, Y. Y.; Fu, L. L.; Wu, Z. H.; Men, Y. F . Structural evolution of ethylene-octene copolymers upon stretching and unloading . Macromolecules , 2013 . 46 971 - 976 . DOI: 10.1021/ma3020933 http://doi.org/10.1021/ma3020933 .

Liao, T.; Jiang, Z. Y.; Li, R.; Gao, Y. X.; Men, Y. F . Stretching temperature dependence of the critical strain in the tensile deformation of polyethylene copolymer . Eur. Polym. J. , 2017 . 97 188 - 197 . DOI: 10.1016/j.eurpolymj.2017.10.015 http://doi.org/10.1016/j.eurpolymj.2017.10.015 .

Bohm, L. L.; Enderle, H. F.; Fleiβner, M . High density polyethylene pipe resins . Adv. Mater. , 1992 . 4 234 - 238 . DOI: 10.1002/adma.19920040317 http://doi.org/10.1002/adma.19920040317 .

Scheirs, J.; Bohm, L. L.; Boot, J. C.; Leevers, P. S . PE100 resins for pipe applications: continuing the development into the 21 st century . Trends Polym. Sci. , 1996 . 4 408 - 415 . .

Brown, N.; Lu, X.; Huang, Y. L.; Qian, R . Slow crack growth in polyethylene—a review . Makromol. Chem. Makromol. Symp. , 1991 . 41 55 - 67 . DOI: 10.1002/masy.19910410107 http://doi.org/10.1002/masy.19910410107 .

Huang, Y. L.; Brown, N . The dependence of butyl branch density on slow crack growth in polyethylene kinetics . J. Polym. Sci., Part B: Polym. Phys. , 1990 . 28 2007 - 2021 . DOI: 10.1002/polb.1990.090281110 http://doi.org/10.1002/polb.1990.090281110 .

Huang, Y. L.; Brown, N . Dependence of slow crack growth in polyethylene on butyl branch density: morphology and theory . J. Polym. Sci., Part B: Polym. Phys. , 1991 . 29 129 - 137 . DOI: 10.1002/polb.1991.090290116 http://doi.org/10.1002/polb.1991.090290116 .

Men, Y. F.; Rieger, J.; Enderle, H. F.; Lilge, D . The mobility of the amorphous phase in polyethylene as a determining factor for slow crack growth . Eur. Phys. J. E , 2004 . 15 421 - 425 . DOI: 10.1140/epje/i2004-10059-3 http://doi.org/10.1140/epje/i2004-10059-3 .

Men, Y. F.; Rieger, J.; Lindner, P.; Enderle, H.; Lilge, D.; Kristen, M.; Mihan, S.; Jiang, S . Structural changes and chain radius of gyration in cold drawn polyethylene after annealing: small- and wide-angle X-ray scattering and small angle neutron scattering studies . J. Phys. Chem. B , 2005 . 109 16650 - 16657 . DOI: 10.1021/jp052723g http://doi.org/10.1021/jp052723g .

Lu, Y.; Men, Y. F . Initiation, development and stabilization of cavities during tensile deformation of semicrystalline polymers . Chinese J. Polym. Sci. , 2018 . 36 1195 - 1199 . DOI: 10.1007/s10118-018-2123-x http://doi.org/10.1007/s10118-018-2123-x .

Hobeika, S.; Men, Y.; Strobl, G . Temperature and strain rate independence of critical strains in polyethylene and poly(ethylene- co -vinyl acetate) . Macromolecules , 2000 . 33 1827 - 1833 . DOI: 10.1021/ma9910484 http://doi.org/10.1021/ma9910484 .

Peterlin, A.; Baltá-Calleja, F. J . Diffraction studies of plastically deformed polyethylene . Kolloid Z. & Z. Polym. , 1970 . 242 1093 - 1102 . .

Glatter, O.; Kratky, O. Small-angle X-ray scattering . Academic Press, London, 1982 .

Litvinov, V. M.; Penning, J. P . Phase composition and molecular mobility in nylon 6 fibers as studied by proton NMR transverse magnetization relaxation . Macromol. Chem. Phys. , 2004 . 205 1721 - 1734 . .

Yang, X. Y.; Liu, S. S.; Korobko, A. V.; Picken, S. J.; Besseling, N. A. M . Changes of the molecular mobility of poly( ε -caprolactone) upon drawing, studied by dielectric relaxation spectroscopy . Chinese J. Polym. Sci. , 2018 . 36 665 - 674 . DOI: 10.1007/s10118-018-2030-1 http://doi.org/10.1007/s10118-018-2030-1 .

Hedesiu, C.; Demco, D. E.; Kleppinger, R.; Buda, A. A.; Blümich, B.; Remerie, K.; Litvinov, V. M . The effect of temperature and annealing on the phase composition, molecular mobility and thickness of domains in high density polyethylene . Polymer , 2007 . 48 763 - 777 . DOI: 10.1016/j.polymer.2006.12.019 http://doi.org/10.1016/j.polymer.2006.12.019 .

Litvinov, V. M.; Kurelec, L . Remarkably high mobility of some chain segments in the amorphous phase of strained HDPE . Polymer , 2014 . 55 620 - 625 . DOI: 10.1016/j.polymer.2013.12.017 http://doi.org/10.1016/j.polymer.2013.12.017 .

Men, Y. F.; Rieger, J.; Enderle, H. F.; Lilge, D . Mechanical α -process in polyethylene . Macromolecules , 2003 . 36 4689 - 4691 . DOI: 10.1021/ma0344902 http://doi.org/10.1021/ma0344902 .

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