

FOLLOWUS
College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
Jie Zhang, E-mail zhangjie@scu.edu.cn
Received:09 September 2017,
Accepted:07 October 2017,
Online First:26 February 2018,
Published:2018-06
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Da-Shan Mi, Feng-Yi Hou, Man Zhou, et al. Distribution of
In the current work
a custom-made vibration injection molding device that can provide oscillatory pressure was utilized to create an injection-molded hierarchical structure. Growth competition among
α
β
and
γ
phases in the injection-molded structure can be studied because of the presence of this hierarchical structure
wherein shish-kebab and spherulite layers were arranged alternately along the thickness direction. The
γ
crystals only existed in layers subjected to high pressure and shear stress
whereas
β
crystals formed between the shear layers. The change in trend of the
γ
fraction was similar to that of parent-to-daughter ratio. In addition
this hierarchical and alternating crystal structure can sharply increase the mechanical properties.
B. Lotz , J. C. Wittmann , A. J. Lovinger . Structure and morphology of poly (propylenes):a molecular analysis . Polymer , 1996 . 37 ( 22 ): 4979 - 4992 . DOI: 10.1016/0032-3861(96)00370-9 http://doi.org/10.1016/0032-3861(96)00370-9 .
E. L. And , Z. Bartczak . Plastic deformation of the γ phase isotactic polypropylene in plane-strain compression at elevated temperatures . Macromolecules , 2007 . 40 ( 14 ): 4933 - 4941 . DOI: 10.1021/ma0708038 http://doi.org/10.1021/ma0708038 .
R. H. Somani , B. S. Hsiao , A. Nogales , H. Fruitwala , S. Srinivas , A. H. Tsou . Structure development during shear flow induced crystallization of i -PP: in situ wide-angle X-ray diffraction study . Macromolecules , 2001 . 34 ( 17 ): 5902 - 5909 . DOI: 10.1021/ma0106191 http://doi.org/10.1021/ma0106191 .
Y. Mao , C. Burger , F. Zuo , B. S. Hsiao , A. Mehta , C. Mitchell , A. H. Tsou . Wide-angle X-ray scattering study on shear-induced crystallization of propylene-1-butylene random copolymer:experiment and diffraction pattern simulation . Macromolecules , 2011 . 44 ( 3 ): 558 - 565 . DOI: 10.1021/ma102342c http://doi.org/10.1021/ma102342c .
Y. Zhang , L. Zhang , H. Liu , H. Du , J. Zhang , T. Wang , X. Zhang . Novel approach to tune mechanics of β -nucleation agent nucleated polypropylene:role of oriented β spherulite . Polymer , 2013 . 54 ( 21 ): 6026 - 6035 . DOI: 10.1016/j.polymer.2013.08.024 http://doi.org/10.1016/j.polymer.2013.08.024 .
T. Foresta , S. Piccarolo , G. Goldbeck-Wood . Competition between α and γ phases in isotactic polypropylene:effects of ethylene content and nucleating agents at different cooling rates . Polymer , 2001 . 42 ( 3 ): 1167 - 1176 . DOI: 10.1016/S0032-3861(00)00404-3 http://doi.org/10.1016/S0032-3861(00)00404-3 .
H. Bai , Y. Wang , Z. Zhang , L. Han , Y. Li , L. Liu , Z. Zhou , Y. Men . Influence of annealing on microstructure and mechanical properties of isotactic polypropylene with β -phase nucleating agent . Macromolecules , 2009 . 42 ( 17 ): 6647 - 6655 . DOI: 10.1021/ma9001269 http://doi.org/10.1021/ma9001269 .
J. Varga , A. Menyhárd . Effect of solubility and nucleating duality of N , N '-dicyclohexyl-2, 6-naphthalenedicarboxamide on the supermolecular structure of isotactic polypropylene . Macromolecules , 2007 . 40 ( 7 ): 2422 - 2431 . DOI: 10.1021/ma062815j http://doi.org/10.1021/ma062815j .
P. Tordjeman , C. Robert , G. Marin , P. Gerard . The effect of α , β crystalline structure on the mechanical properties of polypropylene . Eur. Phys. J. E , 2001 . 4 ( 4 ): 459 - 465 . DOI: 10.1007/s101890170101 http://doi.org/10.1007/s101890170101 .
S. V. Meille , S. Bruckner , W. Porzio . γ -Isotactic polypropylene . A structure with nonparallel chain axes. Macromolecules , 1990 . 23 ( 18 ): 4114 - 4121 . http://pubs.acs.org/doi/pdf/10.1021/ma00220a014 http://pubs.acs.org/doi/pdf/10.1021/ma00220a014 , .
C. de Rosa , F. Auriemma , M. Paolillo , L. Resconi , I. Camurati . Crystallization behavior and mechanical properties of regiodefective, highly stereoregular isotactic polypropylene:effect of regiodefects versus stereodefects and influence of the molecular mass . Macromolecules , 2005 . 38 ( 22 ): 9143 - 9154 . DOI: 10.1021/ma051004x http://doi.org/10.1021/ma051004x .
C. De Rosa , F. Auriemma , O. Ruiz de Ballesteros , L. Resconi , I. Camurati . Tailoring the physical properties of isotactic polypropylene through incorporation of comonomers and the precise control of stereo-and regioregularity by metallocene catalysts . Chem. Mater. , 2007 . 19 ( 21 ): 5122 - 5130 . DOI: 10.1021/cm071502f http://doi.org/10.1021/cm071502f .
G. Polt , F. Spieckermann , H. Wilhelm , M. Kerber , E. Schafler , S. Bernstorff , M. Zehetbauer . The role of dislocations in γ - i PP under plastic deformation investigated by X-ray line profile analysis . Mech. Mater , 2013 . 67 126 - 132 . DOI: 10.1016/j.mechmat.2013.05.010 http://doi.org/10.1016/j.mechmat.2013.05.010 .
S. V. Meille , D. R. Ferro , S. Brückner , A. J. Lovinger , F. J. Padden . Structure of beta.-isotactic polypropylene:a long-standing structural puzzle . Macromolecules , 1994 . 27 ( 9 ): 2615 - 2622 . DOI: 10.1021/ma00087a034 http://doi.org/10.1021/ma00087a034 .
T. Asano , Y. Fujiwara , T. Yoshida . Plastic deformation of oriented lamellae. Ⅱ. Hot rolling of β -phase isotactic polypropylene . Polym. J. , 1979 . 11 ( 5 ): 383 - 390 . DOI: 10.1295/polymj.11.383 http://doi.org/10.1295/polymj.11.383 .
R. H. Somani , B. S. Hsiao , A. Nogales , S. Srinivas , A. H. Tsou , I. Sics , F. J. Balta-Calleja , T. A. Ezquerra . Structure development during shear flow-induced crystallization of i -PP: in situ small-angle X-ray scattering study . Macromolecules , 2000 . 33 ( 25 ): 9385 - 9394 . DOI: 10.1021/ma001124z http://doi.org/10.1021/ma001124z .
B. Luo , H. Li , C. Zhou , W. Zhang , J. Li , X. He , S. Jiang . Mechanistic insights into the shear-induced β -form crystal formation of iPP . Macromol. Chem. Phys. , 2016 . 217 ( 12 ): 1354 - 1360 . DOI: 10.1002/macp.v217.12 http://doi.org/10.1002/macp.v217.12 .
X. Sun , H. Li , I. Lieberwirth , S. Yan . α and β interfacial structures of the i PP/PET matrix/fiber systems . Macromolecules , 2007 . 40 ( 23 ): 8244 - 8249 . DOI: 10.1021/ma071382x http://doi.org/10.1021/ma071382x .
Y. H. Chen , Y. M. Mao , Z. M. Li , B. S. Hsiao . Competitive growth of α -and β -crystals in β -nucleated isotactic polypropylene under shear flow . Macromolecules , 2010 . 43 ( 16 ): 6760 - 6771 . DOI: 10.1021/ma101006e http://doi.org/10.1021/ma101006e .
R. Su , Z. Zhang , X. Gao , Y. Ge , K. Wang , Q. Fu . Polypropylene injection molded part with novel macroscopic bamboo-like bionic structure . J. Phys. Chem. B , 2010 . 114 ( 31 ): 9994 - 10001 . DOI: 10.1021/jp1020802 http://doi.org/10.1021/jp1020802 .
X. Liu , K. Dai , X. Hao , G. Zheng , C. Liu , D. W. Schubert , C. Shen . Crystalline structure of injection molded β -isotactic Polypropylene:analysis of the oriented shear zone . Ind. Eng. Chem. Res. , 2013 . 52 ( 34 ): 11996 - 12002 . DOI: 10.1021/ie401162c http://doi.org/10.1021/ie401162c .
H. Li , S. Yan . Surface-induced polymer crystallization and the resultant structures and morphologies . Macromolecules , 2011 . 44 ( 3 ): 417 - 428 . DOI: 10.1021/ma1023457 http://doi.org/10.1021/ma1023457 .
Y. Qin , Y. Xu , L. Zhang , G. Zheng , X. Yan , K. Dai , C. Liu , C. Shen , Z. Guo . Interfacial interaction enhancement by shear-induced β -cylindrite in isotactic polypropylene/glass fiber composites . Polymer , 2016 . 100 111 - 118 . DOI: 10.1016/j.polymer.2016.08.016 http://doi.org/10.1016/j.polymer.2016.08.016 .
H. Li , S. Jiang , J. Wang , D. Wang , S. Yan . Optical microscopic study on the morphologies of isotactic polypropylene induced by its homogeneity fibers . Macromolecules , 2003 . 36 ( 8 ): 2802 - 2807 . DOI: 10.1021/ma034062w http://doi.org/10.1021/ma034062w .
X. Sun , H. Li , X. Zhang , J. Wang , D. Wang , S. Yan . Effect of fiber molecular weight on the interfacial morphology of i PP fiber/matrix single polymer composites . Macromolecules , 2006 . 39 ( 3 ): 1087 - 1092 . DOI: 10.1021/ma0521102 http://doi.org/10.1021/ma0521102 .
X. Sun , H. Li , J. Wang , S. Yan . Shear-induced interfacial structure of isotactic polypropylene ( i PP) in iPP/fiber composites . Macromolecules , 2006 . 39 ( 25 ): 8720 - 8726 . DOI: 10.1021/ma062105d http://doi.org/10.1021/ma062105d .
R. G. Alamo , M. H. Kim , M. J. Galante , J. R. Isasi , L. Mandelkern . Structural and kinetic factors governing the formation of the γ polymorph of isotactic polypropylene . Macromolecules , 1999 . 32 ( 12 ): 4050 - 4064 . DOI: 10.1021/ma981849r http://doi.org/10.1021/ma981849r .
E. Addink , J. Beintema . Polymorphism of crystalline polypropylene . Polymer , 1961 . 2 185 - 193 . DOI: 10.1016/0032-3861(61)90021-0 http://doi.org/10.1016/0032-3861(61)90021-0 .
S. V. Meille , P. J. Phillips , K. Mezghani , S. Brückner . α - γ disorder in isotactic polypropylene crystallized under high pressure . Macromolecules , 1996 . 29 ( 2 ): 795 - 797 . DOI: 10.1021/ma951168l http://doi.org/10.1021/ma951168l .
K. Mezghani , P. J. Phillips . The γ -phase of high molecular weight isotactic polypropylene:Ⅲ. The equilibrium melting point and the phase diagram . Polymer , 1998 . 39 ( 16 ): 3735 - 3744 . http://www.sciencedirect.com/science/article/pii/S0032386197101215 http://www.sciencedirect.com/science/article/pii/S0032386197101215 , .
T. B. van Erp , L. Balzano , G. W. Peters . Oriented gamma phase in isotactic polypropylene homopolymer . ACS Macro Lett. , 2012 . 1 ( 5 ): 618 - 622 . DOI: 10.1021/mz3000978 http://doi.org/10.1021/mz3000978 .
T. B. van Erp , L. Balzano , A. B. Spoelstra , L. E. Govaert , G. W. Peters . Quantification of non-isothermal, multi-phase crystallization of isotactic polypropylene:The influence of shear and pressure . Polymer , 2012 . 53 ( 25 ): 5896 - 5908 . DOI: 10.1016/j.polymer.2012.10.027 http://doi.org/10.1016/j.polymer.2012.10.027 .
S. G. Yang , Z. Zhang , L. Q. Zhang , D. Zhou , Y. Wang , J. Lei , L. Li , Z. M. Li . Unexpected shear dependence of pressure-induced γ -crystals in isotactic polypropylene . Polym. Chem. , 2015 . 6 ( 25 ): 4588 - 4596 . DOI: 10.1039/C5PY00339C http://doi.org/10.1039/C5PY00339C .
Y. An , L. Gu , Y. Wang , Y. M. Li , W. Yang , B. H. Xie , M. B. Yang . Morphologies of injection molded isotactic polypropylene/ultra high molecular weight polyethylene blends . Mater. Design , 2012 . 35 633 - 639 . DOI: 10.1016/j.matdes.2011.10.017 http://doi.org/10.1016/j.matdes.2011.10.017 .
X. Liu , Y. Pan , C. Peng , X. Hao , G. Zheng , D. W. Schubert , C. Liu , C. Shen . Twisted lamellae in water-assisted injection molded high density polyethylene . Mater. Lett. , 2016 . 172 19 - 22 . DOI: 10.1016/j.matlet.2016.02.127 http://doi.org/10.1016/j.matlet.2016.02.127 .
G. Kalay , M. J. Bevis . Processing and physical property relationships in injection-molded isotactic polypropylene. 1. Mechanical properties . J. Polym. Sci., Part B:Polym. Phys. , 1997 . 35 ( 2 ): 241 - 263 . DOI: 10.1002/(ISSN)1099-0488 http://doi.org/10.1002/(ISSN)1099-0488 .
Y. H. Chen , G. J. Zhong , Y. Wang , Z. M. Li , L. Li . Unusual tuning of mechanical properties of isotactic polypropylene using counteraction of shear flow and β -nucleating agent on β -form nucleation . Macromolecules , 2009 . 42 ( 12 ): 4343 - 4348 . DOI: 10.1021/ma900411f http://doi.org/10.1021/ma900411f .
M. Zhou , X. P. Li , M. Jin , C. Xia , K. Z. Shen , J. Zhang . Simultaneously improving the tensile and impact properties of isotactic polypropylene with the cooperation of co -PP and β -nucleating agent through pressure vibration injection molding . Chinese J. Polym. Sci. , 2016 . 34 ( 8 ): 1001 - 1013 . DOI: 10.1007/s10118-016-1814-4 http://doi.org/10.1007/s10118-016-1814-4 .
Y. H. Chen , Z. Y. Huang , Z. M. Li , J. H. Tang , B. S. Hsiao . Simultaneous improvement of strength and toughness in fiber reinforced isotactic polypropylene composites by shear flow and a β -nucleating agent . RSC Adv. , 2014 . 4 ( 28 ): 14766 - 14776 . DOI: 10.1039/C3RA47990K http://doi.org/10.1039/C3RA47990K .
D. Mi , R. La , T. Wang , X. Zhang , J. Zhang . Hierarchic structure and mechanical property of glass fiber reinforced isotactic polypropylene composites molded by multiflow vibration injection molding, Polym . Compos. , 2017 . 38 ( 12 ): 2707 - 2717 . http://doi.wiley.com/10.1002/pc.23868 http://doi.wiley.com/10.1002/pc.23868 , .
D. Mi , C. Xia , M. Jin , F. Wang , K. Shen , J. Zhang . Quantification of the effect of shish-kebab structure on the mechanical properties of polypropylene samples by controlling shear layer thickness . Macromolecules , 2016 . 49 ( 12 ): 4571 - 4578 . DOI: 10.1021/acs.macromol.6b00822 http://doi.org/10.1021/acs.macromol.6b00822 .
A. Turner-Jones , A. Cobbold . The β crystalline form of isotactic polypropylene . J. Polym. Sci., Part B:Polym. Lett. , 1968 . 6 ( 8 ): 539 - 546 . DOI: 10.1002/pol.1968.110060802 http://doi.org/10.1002/pol.1968.110060802 .
K. Mezghani , P. J. Phillips . γ -Phase in propylene copolymers at atmospheric pressure . Polymer , 1995 . 36 ( 12 ): 2407 - 2411 . DOI: 10.1016/0032-3861(95)97341-C http://doi.org/10.1016/0032-3861(95)97341-C .
R. H. Somani , L. Yang , B. S. Hsiao , T. Sun , N. V. Pogodina , A. Lustiger . Shear-induced molecular orientation and crystallization in isotactic polypropylene:Effects of the deformation rate and strain . Macromolecules , 2005 . 38 ( 4 ): 1244 - 1255 . DOI: 10.1021/ma048285d http://doi.org/10.1021/ma048285d .
E. L. Heeley , D. J. Hughes , E. M. Crabb , J. Bowen , O. Bikondoa , B. Mayoral , S. Leung , T. McNally . The formation of a nanohybrid shish-kebab (NHSK) structure in melt-processed composites of poly(ethylene terephthalate) (PET) and multi-walled carbon nanotubes (MWCNTs) . Polymer , 2017 . 117 208 - 219 . DOI: 10.1016/j.polymer.2017.04.033 http://doi.org/10.1016/j.polymer.2017.04.033 .
K. Liu , J. Zhang , H. Liu , X. Qian , Y. Zhang , T. Wang , K. Shen . A multi-layer bioinspired design with evolution of shish-kebab structures induced by controlled periodical shear field . Express Polym. Lett. , 2013 . 7 ( 4 ): 355 - 364 . http://www.oalib.com/paper/2898656 http://www.oalib.com/paper/2898656 , .
L. Balzano , Z. Ma , D. Cavallo , T. B. van Erp , L. Fernandez-Ballester , G. W. Peters . Molecular aspects of the formation of shish-kebab in isotactic polypropylene . Macromolecules , 2016 . 49 ( 10 ): 3799 - 3809 . DOI: 10.1021/acs.macromol.6b00428 http://doi.org/10.1021/acs.macromol.6b00428 .
B. Schrauwen , L. von Breemen , A. Spoelstra , L. Govaert , G. Peters , H. Meijer . Structure, deformation, and failure of flow-oriented semicrystalline polymers . Macromolecules , 2004 . 37 ( 23 ): 8618 - 8633 . DOI: 10.1021/ma048884k http://doi.org/10.1021/ma048884k .
Y. Tian , C. Zhu , J. Gong , S. Yang , J. Ma , J. Xu . Lamellae break induced formation of shish-kebab during hot stretching of ultra-high molecular weight polyethylene precursor fibers investigated by in situ small angle X-ray scattering . Polymer , 2014 . 55 ( 16 ): 4299 - 4306 . DOI: 10.1016/j.polymer.2014.06.056 http://doi.org/10.1016/j.polymer.2014.06.056 .
B. Lotz , S. Graff , C. Straupe , J. Wittmann . Single crystals of γ phase isotactic polypropylene:combined diffraction and morphological support for a structure with non-parallel chains . Polymer , 1991 . 32 ( 16 ): 2902 - 2910 . DOI: 10.1016/0032-3861(91)90185-L http://doi.org/10.1016/0032-3861(91)90185-L .
C. de Rosa , F. Auriemma , O. R. De Ballesteros , L. Resconi , I. Camurati . Crystallization behavior of isotactic propyleneethylene and propylene-butene copolymers:effect of comonomers versus stereodefects on crystallization properties of isotactic polypropylene . Macromolecules , 2007 . 40 ( 18 ): 6600 - 6616 . DOI: 10.1021/ma070409+ http://doi.org/10.1021/ma070409+ .
F. Auriemma , C. De Rosa . Crystallization of metallocene-made isotactic polypropylene:disordered modifications intermediate between the α and γ forms . Macromolecules , 2002 . 35 ( 24 ): 9057 - 9068 . DOI: 10.1021/ma020648r http://doi.org/10.1021/ma020648r .
C. de Rosa , F. Auriemma , C. Spera , G. Talarico , O. Tarallo . Comparison between polymorphic behaviors of Ziegler-Natta and metallocene-made isotactic polypropylene:the role of the distribution of defects in the polymer chains . Macromolecules , 2004 . 37 ( 4 ): 1441 - 1454 . DOI: 10.1021/ma035295q http://doi.org/10.1021/ma035295q .
C. de Rosa , F. Auriemma , A. Di Capua , L. Resconi , S. Guidotti , I. Camurati , I. E. Nifant'ev , I. P. Laishevtsev . Structureproperty correlations in polypropylene from metallocene catalysts:stereodefective, regioregular isotactic polypropylene . J. Am. Chem. Soc. , 2004 . 126 ( 51 ): 17040 - 17049 . DOI: 10.1021/ja045684f http://doi.org/10.1021/ja045684f .
S. Brückner , P. J. Phillips , K. Mezghani , S. V. Meille . On the crystallization of γ -isotactic polypropylene:a high pressure study . Macromol. Rapid Commun. , 1997 . 18 ( 1 ): 1 - 7 . DOI: 10.1002/marc.1997.030180101 http://doi.org/10.1002/marc.1997.030180101 .
Z. Liu , X. Liu , G. Zheng , K. Dai , C. Liu , C. Shen , R. Yin , Z. Guo . Mechanical enhancement of melt-stretched β -nucleated isotactic polypropylene:The role of lamellar branching of β -crystal . Polym. Test. , 2017 . 58 227 - 235 . DOI: 10.1016/j.polymertesting.2017.01.002 http://doi.org/10.1016/j.polymertesting.2017.01.002 .
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