1
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Nie Y, Zhao Y, Matsuba G, Hu W. Shish-kebab crystallites initiated by shear fracture in bulk polymers: 2. Crystallization on shearing. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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2
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Nie C, Peng F, Cao R, Cui K, Sheng J, Chen W, Li L. Recent progress in flow‐induced polymer crystallization. JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1002/pol.20220330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Cui Nie
- National Synchrotron Radiation Laboratory, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry University of Science and Technology of China Hefei China
| | - Fan Peng
- National Synchrotron Radiation Laboratory, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry University of Science and Technology of China Hefei China
| | - Renkuan Cao
- National Synchrotron Radiation Laboratory, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry University of Science and Technology of China Hefei China
| | - Kunpeng Cui
- Department of Polymer Science and Engineering, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film University of Science and Technology of China Hefei China
| | - Junfang Sheng
- National Synchrotron Radiation Laboratory, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry University of Science and Technology of China Hefei China
| | - Wei Chen
- National Synchrotron Radiation Laboratory, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry University of Science and Technology of China Hefei China
| | - Liangbin Li
- National Synchrotron Radiation Laboratory, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, CAS Key Laboratory of Soft Matter Chemistry University of Science and Technology of China Hefei China
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3
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Yang J, Liu Z, Zhou Z, Ming Y, Li S, Hao T, Nie Y. Molecular dynamics simulations of the effects of carbon nanotube content on stretch-induced crystallization of polyethylene/carbon nanotube nanocomposites. Phys Chem Chem Phys 2022; 24:16021-16030. [DOI: 10.1039/d2cp01522f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the present work, we used molecular dynamics simulations to study the effects of carbon nanotube (CNT) content on stretch-induced crystallization behaviors in CNT filled polyethylene systems. During high-temperature stretching,...
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4
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Precursor formation and crystal nucleation in stretched polyethylene/carbon nanotube nanocomposites. POLYMER 2022. [DOI: 10.1016/j.polymer.2021.124438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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5
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Zhang XX, Yang SG, Zhong GJ, Lei J, Liu D, Sun GA, Xu JZ, Li ZM. Rapid Melt Crystallization of Bisphenol-A Polycarbonate Jointly Induced by Pressure and Flow. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02208] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xi-Xi Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Shu-Gui Yang
- State Key Laboratory for Mechanical Behaviour of Materials, Shanxi International Research Center for Soft Matter, Xi’an Jiaotong University, Xi’an 710049, P. R. China
| | - Gan-Ji Zhong
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Jun Lei
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Dong Liu
- Key Laboratory of Neutron Physics, Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, 621999 Mianyang, P. R. China
| | - Guang-Ai Sun
- Key Laboratory of Neutron Physics, Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, 621999 Mianyang, P. R. China
| | - Jia-Zhuang Xu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Zhong-Ming Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, P. R. China
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6
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In situ synchrotron small angle X-ray scattering investigation of structural formation of polyethylene upon micro-injection molding. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123390] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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7
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Delay of re-entanglement kinetics by shear-induced nucleation precursors in isotactic polypropylene melt. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.123000] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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8
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Zhang Z, Wang X, Wang Y, Shen C, Liu C, Wang Z. Melt extension-induced shish-kebabs with heterogeneous spatial distribution of crystalline polymorphs in lightly crosslinked poly(lactic acid). POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122875] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Nie Z, Liu X, Yu W. Shear-induced crystallization of olefin multiblock copolymers: Role of mesophase separation and hard-block content. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122535] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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10
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Liu Z, Zhou Z, Ming Y, Zhang S, Hao T, Nie Y. Molecular dynamics simulations of nucleation details in stretched polyethylene. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122442] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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Seo J, Gohn AM, Schaake RP, Parisi D, Rhoades AM, Colby RH. Shear Flow-Induced Crystallization of Poly(ether ether ketone). Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b02611] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jiho Seo
- Materials Science and Engineering, Penn State University, University Park, State College, Pennsylvania 16802, United States
| | - Anne M. Gohn
- School of Engineering, Penn State Behrend, Erie, Pennsylvania 16563, United States
| | | | - Daniele Parisi
- Materials Science and Engineering, Penn State University, University Park, State College, Pennsylvania 16802, United States
| | - Alicyn M. Rhoades
- School of Engineering, Penn State Behrend, Erie, Pennsylvania 16563, United States
| | - Ralph H. Colby
- Materials Science and Engineering, Penn State University, University Park, State College, Pennsylvania 16802, United States
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12
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Wu X, fu C, Tan Z, Gao Y, Ma A, Nie W, Ran X. Tunable triple‐shape memory composite fabricated by selective crosslinking of polycaprolactone/poly(butylene adipate‐
co
‐terephthalate)/bentonite. J Appl Polym Sci 2019. [DOI: 10.1002/app.48577] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xianyou Wu
- Key Laboratory of High‐performance Synthetic Rubber and Its Composite MaterialsChangchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 People's Republic of China
- University of Science and Technology of China Hefei 230026 People's Republic of China
| | - Chao fu
- Key Laboratory of High‐performance Synthetic Rubber and Its Composite MaterialsChangchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 People's Republic of China
| | - Zhongyang Tan
- Key Laboratory of High‐performance Synthetic Rubber and Its Composite MaterialsChangchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 People's Republic of China
| | - Yixing Gao
- Key Laboratory of High‐performance Synthetic Rubber and Its Composite MaterialsChangchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 People's Republic of China
| | - Antong Ma
- Key Laboratory of High‐performance Synthetic Rubber and Its Composite MaterialsChangchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 People's Republic of China
- University of Science and Technology of China Hefei 230026 People's Republic of China
| | - Wei Nie
- Key Laboratory of High‐performance Synthetic Rubber and Its Composite MaterialsChangchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 People's Republic of China
| | - Xianghai Ran
- Key Laboratory of High‐performance Synthetic Rubber and Its Composite MaterialsChangchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun 130022 People's Republic of China
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13
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Wilsens CHRM, Hawke LGD, de Kort GW, Saidi S, Roy M, Leoné N, Hermida-Merino D, Peters GWM, Rastogi S. Effect of Thermal History and Shear on the Viscoelastic Response of iPP Containing an Oxalamide-Based Organic Compound. Macromolecules 2019; 52:2789-2802. [PMID: 30983633 PMCID: PMC6459004 DOI: 10.1021/acs.macromol.8b02612] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 02/18/2019] [Indexed: 11/30/2022]
Abstract
![]()
We
report on the role of temperature and shear on the melt behavior
of iPP in the presence of the organic compound N1,N1′-(propane-1,3-diyl)bis(N2-hexyloxalamide) (OXA3,6). It is demonstrated
that OXA3,6 facilitates a viscosity suppression when
it resides in the molten state. The viscosity suppression is attributed
to the interaction of iPP chains/subchains with molten OXA3,6 nanoclusters. The exact molecular mechanism has not
been identified; nevertheless, a tentative explanation is proposed.
The observed viscosity suppression appears similar to that encountered
in polymer melts filled with solid nanoparticles, with the difference
that the OXA3,6 compound reported in this study facilitates
the viscosity suppression in the molten state. Upon cooling, as crystal
growth of OXA3,6 progresses, the decrease in viscosity
is suppressed. Retrospectively, segmental absorption of iPP chains on the surface of micrometer-sized OXA3,6 crystallites
favors the formation of dangling arms, yielding OXA3,6 crystallites decorated with partially absorbed iPP chains. In other words, the resulting OXA3,6 particle
morphology resembles that of a hairy particle or a starlike polymer
chain. Such hairy particles effectively facilitate a viscosity enhancement,
similar to branched polymer chains. This hypothesis and its implications
for the shear behavior of iPP are discussed and supported
using plate–plate rheometry and slit-flow experiments combined
with small-angle X-ray scattering analysis.
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Affiliation(s)
- Carolus H R M Wilsens
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD Maastricht, The Netherlands
| | - Laurence G D Hawke
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD Maastricht, The Netherlands
| | - Gijs W de Kort
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD Maastricht, The Netherlands
| | - Sarah Saidi
- LMOPS, EA 4423, Université de Lorraine, CentraleSupelec Metz, 2 rue Edouard Belin, F-57070 Metz, France.,Netherlands Organisation for Scientific Research (NWO), DUBBLE@ESRF BP CS40220, 38043 Grenoble, France
| | - Manta Roy
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD Maastricht, The Netherlands
| | - Nils Leoné
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD Maastricht, The Netherlands
| | - Daniel Hermida-Merino
- Netherlands Organisation for Scientific Research (NWO), DUBBLE@ESRF BP CS40220, 38043 Grenoble, France
| | - Gerrit W M Peters
- Department of Mechanical Engineering, Materials Technology Institute, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Sanjay Rastogi
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD Maastricht, The Netherlands
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14
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Fang H, Wang X, Gu J, Li Z, Ruan S, Shen C. A novel crystallization kinetics model of transcrystalline used for crystallization behavior simulation of short carbon fiber‐reinforced polymer composites. POLYM ENG SCI 2019. [DOI: 10.1002/pen.25028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Haidong Fang
- School of Materials Science and Engineering Dalian University of Technology Dalian 116024 China
| | - Xinyu Wang
- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics Dalian University of Technology Dalian 116024 China
- School of Mechanical Engineering Dalian University of Technology Dalian 116024 China
| | - Junfeng Gu
- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics Dalian University of Technology Dalian 116024 China
| | - Zheng Li
- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics Dalian University of Technology Dalian 116024 China
| | - Shilun Ruan
- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics Dalian University of Technology Dalian 116024 China
| | - Changyu Shen
- State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics Dalian University of Technology Dalian 116024 China
- School of Materials Science and Engineering, The Key Laboratory of Material Processing and Mold of Ministry of Education Zhengzhou University Zhengzhou 450001 China
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15
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Yang S, Li Y, Ma Z, Lei J, Li L, Li Z. A revisit to the flow and pressure jointly induced thick lamellae in isotactic polypropylene: A synchrotron radiation small‐ and wide‐angle X‐ray scattering study. POLYMER CRYSTALLIZATION 2019. [DOI: 10.1002/pcr2.10035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Shu‐Gui Yang
- State Key Laboratory of Polymer Materials Engineering, Sichuan UniversityCollege of Polymer Science and Engineering Chengdu China
| | - Yue Li
- State Key Laboratory of Polymer Materials Engineering, Sichuan UniversityCollege of Polymer Science and Engineering Chengdu China
| | - Zhe Ma
- Tianjin Key Laboratory of Composite and Functional Materials, and School of Materials Science and EngineeringTianjin University Tianjin China
| | - Jun Lei
- State Key Laboratory of Polymer Materials Engineering, Sichuan UniversityCollege of Polymer Science and Engineering Chengdu China
| | - Liangbin Li
- National Synchrotron Radiation Lab and College of Nuclear Science and Technology, CAS Key Laboratory of Soft Matter ChemistryUniversity of Science and Technology of China Hefei China
| | - Zhong‐Ming Li
- State Key Laboratory of Polymer Materials Engineering, Sichuan UniversityCollege of Polymer Science and Engineering Chengdu China
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16
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Yue K, Liu G, Feng X, Li L, Lotz B, Cheng SZD. A few rediscovered and challenging topics in polymer crystals and crystallization. POLYMER CRYSTALLIZATION 2018. [DOI: 10.1002/pcr2.10053] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Kan Yue
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology Guangzhou China
| | - Gengxin Liu
- Center for Advanced Low‐dimensional Materials Donghua University Shanghai China
| | - Xueyan Feng
- College of Polymer Science and Polymer Engineering, The University of Akron Akron Ohio
| | - Liangbin Li
- National Synchrotron Radiation Lab and CAS Key Laboratory of Soft Matter Chemistry University of Science and Technology of China Hefei China
| | - Bernard Lotz
- Institut Charles Sadron, CNRS‐Universite de Strasbourg Strasbourg France
| | - Stephen Z. D. Cheng
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology Guangzhou China
- College of Polymer Science and Polymer Engineering, The University of Akron Akron Ohio
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17
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Song YN, Ru JF, Xu JZ, Lei J, Xu L, Li ZM. Flow-Induced Precursor Formation of Poly(l-lactic acid) under Pressure. ACS OMEGA 2018; 3:15471-15481. [PMID: 31458203 PMCID: PMC6644044 DOI: 10.1021/acsomega.8b02425] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 11/01/2018] [Indexed: 06/10/2023]
Abstract
For the first time, the influences of two inevitable processing fields (pressure and flow fields) on the crystallization of a semirigid molecular chain polymer, that is, poly(l-lactic acid) (PLLA), were explored using a homemade pressuring and shearing device. The results reveal that the shear rate facilitated the generation of precursor because it induced oriented segment formation. It was found that the most sensitive shear temperature for the generation of PLLA precursor under 100 MPa was 180 °C. When the shear temperature was higher (e.g., 190 °C), the relaxation of shear-induced oriented segments was too quick to induce the generation of PLLA precursor. Oppositely, at a lower shear temperature (170 °C), the oriented segments were hard to relax within the whole shear rate range (3.1-31.4 s-1). Annealing treatment was infaust to the PLLA precursor formation because it promoted the relaxation of oriented segments. Different from the shear and annealing, pressure played a more complicated role in the formation of PLLA precursor. Pressure decreased the free volume between PLLA molecular chains and meantime increased the supercooling of PLLA melt. In addition, PLLA chains tended to form locally oriented segment bundles to adapt to the pressurized state, which facilitated the formation of PLLA precursor and the following crystallization process. These two factors lowered the movability of PLLA chains and suppressed the relaxation of chain, so shear-induced orientation facilitated PLLA precursor formation under pressure. In that case, pressure and shear flow showed a synergetic promoting effect on the generation of PLLA precursor and the following crystallization process. These meaningful results could be helpful for comprehending the relationship between crystallization conditions and the crystallization behavior of PLLA and thus would provide guidance to fabricating the final products through controlling the crystallization process of PLLA.
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18
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Deng C, Jin B, Zhao Z, Shen K, Zhang J. The influence of hoop shear field on the structure and performances of glass fiber reinforced three-layer polypropylene random copolymer pipe. J Appl Polym Sci 2018. [DOI: 10.1002/app.46985] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chengji Deng
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 China
| | - Biqiang Jin
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 China
| | - Zhihao Zhao
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 China
| | - Kaizhi Shen
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 China
| | - Jie Zhang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 China
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19
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In Situ Synchrotron Radiation Techniques: Watching Deformation-induced Structural Evolutions of Polymers. CHINESE JOURNAL OF POLYMER SCIENCE 2018. [DOI: 10.1007/s10118-018-2169-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Wilsens CHRM, Hawke LGD, Troisi EM, Hermida-Merino D, de Kort G, Leoné N, Saralidze K, Peters GWM, Rastogi S. Effect of Self-Assembly of Oxalamide Based Organic Compounds on Melt Behavior, Nucleation, and Crystallization of Isotactic Polypropylene. Macromolecules 2018; 51:4882-4895. [PMID: 30018462 PMCID: PMC6041772 DOI: 10.1021/acs.macromol.8b00489] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 05/22/2018] [Indexed: 11/29/2022]
Abstract
![]()
We report on the
effect of an aliphatic oxalamide based nucleating
agent (OXA3,6) on the melt and crystallization behavior
of isotactic polypropylene (iPP) under defined shear
conditions. Through polarized optical microscopy, we demonstrate that OXA3,6 self-assembles from the iPP melt into
rhombic crystals whereas their size and distribution proved highly
dependent on the employed cooling rates. The presence of 0.5 wt %
of OXA3,6 in iPP results in a significant
suppression in iPP melt viscosity, which could not
be explained via molecular modeling. A possible cause for the drop
in viscosity in the presence of OXA3,6 is attributed
to the interaction (absorption) of high molecular weight iPP chains with the nucleating agent, thereby suppressing their contribution
to the viscoelastic response of the melt. This proposed mechanism
for the suppression in melt viscosity appears similar to that encountered
by the homogeneous distribution of nanoparticles such as CNTs, graphene,
and silica. Shear experiments, performed using a slit flow device
combined with small-angle X-ray diffraction measurements, indicate
that crystallization is significantly enhanced in the presence of OXA3,6 at relatively low shear rates despite its lowered sensitivity
to shear. This enhancement in crystallization is attributed to the
shear alignment of the rhombic OXA3,6 crystals that provide
surface for iPP kebab growth upon cooling. Overall,
the suppression in melt viscosity in combination with enhanced nucleation
efficiency at low as well as high shear rates makes this self-assembling
oxalamide based nucleating agent a promising candidate for fast processing.
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Affiliation(s)
- Carolus H R M Wilsens
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD, Maastricht, The Netherlands
| | - Laurence G D Hawke
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD, Maastricht, The Netherlands
| | - Enrico M Troisi
- Department of Mechanical Engineering, Materials Technology Institute, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Daniel Hermida-Merino
- Netherlands Organisation for Scientific Research (NWO), DUBBLE@ESRF BP CS40220, 38043 Grenoble, France
| | - Gijs de Kort
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD, Maastricht, The Netherlands
| | - Nils Leoné
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD, Maastricht, The Netherlands
| | - Ketie Saralidze
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD, Maastricht, The Netherlands
| | - Gerrit W M Peters
- Department of Mechanical Engineering, Materials Technology Institute, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Sanjay Rastogi
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD, Maastricht, The Netherlands
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21
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Nazari B, Tran H, Beauregard B, Flynn-Hepford M, Harrell D, Milner ST, Colby RH. Two Distinct Morphologies for Semicrystalline Isotactic Polypropylene Crystallized after Shear Flow. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00563] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
| | | | | | | | - Douglas Harrell
- The Phillips
66
Company, Linden, New Jersey 07036, United States
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22
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Massaro R, Roozemond P, D’Haese M, Puyvelde PV. Flow-Induced Crystallization of Polyamide-6. INT POLYM PROC 2018. [DOI: 10.3139/217.3524] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Flow-induced crystallization has been widely studied for a variety of polymers with the main focus on polyolefins. In this work, research has been conducted on the flow-induced crystallization of another important class of polymers, namely polyamides. Different polyamides-6 with varying molecular weight have been studied. At relatively modest values of shear rate, rheology has been used to study the kinetics of flow-induced crystallization. Typical scaling relations based on the longest relaxation time and the Rouse time – usually obtained for polyolefins – are tested for the polyamides under investigation in order to identify the different regimes of flow-induced crystallization. At high shear rates, a correct rheological signal was impossible to collect. However, the rheometer was used in this case to prepare the sample to be studied ex-situ by Wide Angle X-ray Scattering experiments to determine the onset shear rate for the formation of highly oriented shish-kebab structures.
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Affiliation(s)
- R. Massaro
- Department of Chemical Engineering , KU Leuven, Leuven , Belgium
| | - P. Roozemond
- DSM Materials Science Center , Geleen , The Netherlands
| | - M. D’Haese
- DSM Materials Science Center , Geleen , The Netherlands
| | - P. Van Puyvelde
- Department of Chemical Engineering , KU Leuven, Leuven , Belgium
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23
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Zhang Q, Li L, Su F, Ji Y, Ali S, Zhao H, Meng L, Li L. From Molecular Entanglement Network to Crystal-Cross-Linked Network and Crystal Scaffold during Film Blowing of Polyethylene: An in Situ Synchrotron Radiation Small- and Wide-Angle X-ray Scattering Study. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00346] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Qianlei Zhang
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, China
| | - Lifu Li
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, China
| | - Fengmei Su
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, China
| | - Youxin Ji
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, China
| | - Sarmad Ali
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, China
| | - Haoyuan Zhao
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, China
| | - Lingpu Meng
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, China
| | - Liangbin Li
- National Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, Anhui Provincial Engineering Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, Hefei, China
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24
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Xu JZ, Li Y, Li YK, Chen YW, Wang R, Liu G, Liu SM, Ni HW, Li ZM. Shear-induced stereocomplex cylindrites in polylactic acid racemic blends: Morphology control and interfacial performance. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.02.048] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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25
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Cui K, Ma Z, Tian N, Su F, Liu D, Li L. Multiscale and Multistep Ordering of Flow-Induced Nucleation of Polymers. Chem Rev 2018; 118:1840-1886. [DOI: 10.1021/acs.chemrev.7b00500] [Citation(s) in RCA: 167] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kunpeng Cui
- National
Synchrotron Radiation Laboratory, Chinese Academy of Sciences Key
Laboratory of Soft Matter Chemistry, and Anhui Provincial Engineering
Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, 96 Jinzhai Road, Baohe District, Hefei 230026, People’s Republic of China
| | - Zhe Ma
- Tianjin
Key Laboratory of Composite and Functional Materials, School of Materials
Science and Engineering, Tianjin University, 92 Weijin Road,
Nankai District, Tianjin 300072, People’s Republic of China
| | - Nan Tian
- Ministry
of Education Key Laboratory of Space Applied Physics and Chemistry
and Shanxi Key Laboratory of Macromolecular Science and Technology,
School of Science, Northwestern Polytechnical University, 127 Youyi
West Road, District Beilin, Xi’an 710072, People’s Republic of China
| | - Fengmei Su
- National
Synchrotron Radiation Laboratory, Chinese Academy of Sciences Key
Laboratory of Soft Matter Chemistry, and Anhui Provincial Engineering
Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, 96 Jinzhai Road, Baohe District, Hefei 230026, People’s Republic of China
| | - Dong Liu
- Key
Laboratory of Neutron Physics and Institute of Nuclear Physics and
Chemistry, China Academy of Engineering Physics, 64 Mianshan
Road, Mianyang, Sichuan 621999, People’s Republic of China
| | - Liangbin Li
- National
Synchrotron Radiation Laboratory, Chinese Academy of Sciences Key
Laboratory of Soft Matter Chemistry, and Anhui Provincial Engineering
Laboratory of Advanced Functional Polymer Film, University of Science and Technology of China, 96 Jinzhai Road, Baohe District, Hefei 230026, People’s Republic of China
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26
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Su F, Ji Y, Meng L, Chang J, Chen L, Li L. Shear-induced precursors in polyethylene: An in-situ synchrotron radiation scanning X-ray microdiffraction study. POLYMER 2018. [DOI: 10.1016/j.polymer.2017.12.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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27
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Wang Y, Zhao J, Qu M, Guo J, Yang SG, Lei J, Xu JZ, Chen YH, Li ZM, Hsiao BS. An unusual promotion of γ-crystals in metallocene-made isotactic polypropylene from orientational relaxation and favorable temperature window induced by shear. POLYMER 2018. [DOI: 10.1016/j.polymer.2017.11.040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Yang SG, Ma Z, Lei J, Li L, Hsiao BS, Li ZM. A Criterion for Flow-Induced Oriented Crystals in Isotactic Polypropylene under Pressure. Macromol Rapid Commun 2017; 38. [DOI: 10.1002/marc.201700407] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 07/27/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Shu-Gui Yang
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 China
| | - Zhe Ma
- Tianjin Key Laboratory of Composite and Functional Materials; and School of Materials Science and Engineering; Tianjin University; Tianjin 300072 China
| | - Jun Lei
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 China
| | - Liangbin Li
- National Synchrotron Radiation Lab and College of Nuclear Science and Technology; CAS Key Laboratory of Soft Matter Chemistry; University of Science and Technology of China; Hefei 230026 China
| | - Benjamin S. Hsiao
- Department of Chemistry; Stony Brook University; New York NY 11794 USA
| | - Zhong-Ming Li
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 China
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29
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Bai H, Deng S, Bai D, Zhang Q, Fu Q. Recent Advances in Processing of Stereocomplex-Type Polylactide. Macromol Rapid Commun 2017; 38. [DOI: 10.1002/marc.201700454] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Revised: 07/26/2017] [Indexed: 01/18/2023]
Affiliation(s)
- Hongwei Bai
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 P. R. China
| | - Shihao Deng
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 P. R. China
| | - Dongyu Bai
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 P. R. China
| | - Qin Zhang
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 P. R. China
| | - Qiang Fu
- College of Polymer Science and Engineering; State Key Laboratory of Polymer Materials Engineering; Sichuan University; Chengdu 610065 P. R. China
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30
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Troisi EM, Caelers HJM, Peters GWM. Full Characterization of Multiphase, Multimorphological Kinetics in Flow-Induced Crystallization of IPP at Elevated Pressure. Macromolecules 2017; 50:3868-3882. [PMID: 28553002 PMCID: PMC5444050 DOI: 10.1021/acs.macromol.7b00595] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 05/04/2017] [Indexed: 11/29/2022]
Abstract
Understanding the complex crystallization behavior of isotactic polypropylene (iPP) in conditions comparable to those found in polymer processing, where the polymer melt experiences a combination of high shear rates and elevated pressures, is key for modeling and therefore predicting the final structure and properties of iPP products. Coupling a unique experimental setup, capable to apply wall shear rates similar to those experienced during processing and carefully control the pressure before and after flow is imposed, with in situ X-ray scattering and diffraction techniques (SAXS and WAXD) at fast acquisition rates (up to 30 Hz), a well-defined series of short-term flow experiments are carried out using 16 different combinations of wall shear rates (ranging from 110 to 440 s-1) and pressures (100-400 bar). A complete overview on the kinetics of structure development during and after flow is presented. Information about shish formation and growth of α-phase parents lamellae from the shish backbones is extracted from SAXS; the overall apparent crystallinity evolution, amounts of different phases (α, β, and γ), and morphologies developing in the shear layer (parent and daughter lamellae both in α and γ phase) are fully quantified from the analysis of WAXD data. Both flow rate and pressure were found to have a significant influence on the nucleation and the growth process of oriented and isotropic structures. Flow affects shish formation and the growth of α-parents; pressure acts on relaxation times, enhancing the effect of flow, and (mainly) on the growth rate of γ-phase. The remarkably high amount of γ-lamellae found in the oriented layer strongly indicates the nucleation of γ directly from the shish backbone. All the observations were conceptually in agreement with the flow-induced crystallization model framework developed in our group and represent a unique and valuable data set that will be used to further validate and implement our numerical modeling, filling the gap for quantitatively modeling crystallization during complicated processing operations like injection molding.
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Affiliation(s)
- E. M. Troisi
- Department
of Mechanical Engineering, Materials Technology Institute, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
- Dutch Polymer
Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - H. J. M. Caelers
- Department
of Mechanical Engineering, Materials Technology Institute, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - G. W. M. Peters
- Department
of Mechanical Engineering, Materials Technology Institute, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
- Dutch Polymer
Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands
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31
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Yang J, Tang X, Wang Z, Xu T, Tian F, Ji Y, Li L. Coupling between intra- and inter-chain orderings in flow-induced crystallization of polyethylene: A non-equilibrium molecular dynamics simulation study. J Chem Phys 2017; 146:014901. [DOI: 10.1063/1.4973382] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Junsheng Yang
- National Synchrotron Radiation Lab and CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
- Computational Physics Key Laboratory of Sichuan Province, Yibin University, Yibin, China
| | - Xiaoliang Tang
- National Synchrotron Radiation Lab and CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Zhen Wang
- National Synchrotron Radiation Lab and CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Tingyu Xu
- National Synchrotron Radiation Lab and CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Fucheng Tian
- National Synchrotron Radiation Lab and CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Youxin Ji
- National Synchrotron Radiation Lab and CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Liangbin Li
- National Synchrotron Radiation Lab and CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
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32
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Troisi E, Formenti S, Briatico-Vangosa F, Cavallo D, Peters G. Nucleation induced by “Short-Term Pressurization” of an undercooled isotactic polypropylene melt. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.11.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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33
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34
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Wang Z, Ma Z, Li L. Flow-Induced Crystallization of Polymers: Molecular and Thermodynamic Considerations. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02688] [Citation(s) in RCA: 152] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Zhen Wang
- National
Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Zhe Ma
- School
of Materials Science and Engineering, Tianjin University, Tianjin, China
| | - Liangbin Li
- National
Synchrotron Radiation Lab, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
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35
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Zhou W, Meng L, Lu J, Wang Z, Zhang W, Huang N, Chen L, Li L. Inducing uniform single-crystal like orientation in natural rubber with constrained uniaxial stretch. SOFT MATTER 2015; 11:5044-5052. [PMID: 26021287 DOI: 10.1039/c5sm00738k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The effect of flow on crystallization is commonly attributed to entropic reduction, which is caused by stretch and orientation of polymer chains but overlooks the role of flow on final-state free energy. With the aid of in situ synchrotron radiation wide-angle X-ray diffraction (WAXD) and a homemade constrained uniaxial tensile testing machine, polycrystals possessing single-crystal-like orientation rather than uniaxial orientation are found during the constrained stretch of natural rubber, whereas the c-axis and a-axis align in the stretch direction (SD) and constrained direction (CD), respectively. Molecular dynamics simulation shows that aligning the a-axis of crystal nuclei in CD leads to the lowest free energy increase and favors crystal nucleation. This indicates that the nomenclature of strain-induced crystallization may not fully account for the nature of flow-induced crystallization (FIC) as strain mainly emphasizes the entropic reduction of initial melt, whereas stress rather than strain plays the dominant role in crystal deformation. The current work not only contributes to a comprehensive understanding of the mechanism of flow-induced crystallization but also demonstrates the potential application of constrained uniaxial tensile stretch for the creation of functional materials containing polycrystals that possess single-crystal-like orientation.
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Affiliation(s)
- Weiming Zhou
- National Synchrotron Radiation Lab & CAS Key Laboratory of Soft Matter Chemistry & Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, China.
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36
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Han R, Nie M, Wang Q. Control over β-form hybrid shish-kebab crystals in polypropylene pipe via coupled effect of self-assembly β nucleating agent and rotation extrusion. J Taiwan Inst Chem Eng 2015. [DOI: 10.1016/j.jtice.2015.02.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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37
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Troisi EM, Portale G, Ma Z, van Drongelen M, Hermida-Merino D, Peters GWM. Unusual Melting Behavior in Flow Induced Crystallization of LLDPE: Effect of Pressure. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00255] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- E. M. Troisi
- Department
of Mechanical Engineering, Materials Technology Institute, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
- Dutch Polymer Institute (DPI), P.O.
Box 902, 5600 AX Eindhoven, The Netherlands
| | - G. Portale
- DUBBLE CRG BM26@ESRF, European Synchrotron
Radiation Facility, Netherlands Organization for Scientific Research (NWO), BP 220, F-38043, Grenoble, Cedex, France
| | - Z. Ma
- Department
of Mechanical Engineering, Materials Technology Institute, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - M. van Drongelen
- Department
of Mechanical Engineering, Materials Technology Institute, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - D. Hermida-Merino
- Dutch Polymer Institute (DPI), P.O.
Box 902, 5600 AX Eindhoven, The Netherlands
- DUBBLE CRG BM26@ESRF, European Synchrotron
Radiation Facility, Netherlands Organization for Scientific Research (NWO), BP 220, F-38043, Grenoble, Cedex, France
| | - G. W. M. Peters
- Department
of Mechanical Engineering, Materials Technology Institute, Eindhoven University of Technology, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
- Dutch Polymer Institute (DPI), P.O.
Box 902, 5600 AX Eindhoven, The Netherlands
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38
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Cui K, Liu D, Ji Y, Huang N, Ma Z, Wang Z, Lv F, Yang H, Li L. Nonequilibrium Nature of Flow-Induced Nucleation in Isotactic Polypropylene. Macromolecules 2015. [DOI: 10.1021/ma502412y] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kunpeng Cui
- National Synchrotron
Radiation Lab and College of Nuclear Science and Technology, CAS Key
Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Dong Liu
- National Synchrotron
Radiation Lab and College of Nuclear Science and Technology, CAS Key
Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Youxin Ji
- National Synchrotron
Radiation Lab and College of Nuclear Science and Technology, CAS Key
Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Ningdong Huang
- National Synchrotron
Radiation Lab and College of Nuclear Science and Technology, CAS Key
Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Zhe Ma
- Department of Mechanical
Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands
| | - Zhen Wang
- National Synchrotron
Radiation Lab and College of Nuclear Science and Technology, CAS Key
Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Fei Lv
- National Synchrotron
Radiation Lab and College of Nuclear Science and Technology, CAS Key
Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Haoran Yang
- National Synchrotron
Radiation Lab and College of Nuclear Science and Technology, CAS Key
Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Liangbin Li
- National Synchrotron
Radiation Lab and College of Nuclear Science and Technology, CAS Key
Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
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39
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Roozemond PC, van Drongelen M, Ma Z, Spoelstra AB, Hermida-Merino D, Peters GWM. Self-regulation in flow-induced structure formation of polypropylene. Macromol Rapid Commun 2014; 36:385-90. [PMID: 25522201 DOI: 10.1002/marc.201400505] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 11/03/2014] [Indexed: 11/11/2022]
Abstract
Flow-induced structure formation is investigated with in situ wide-angle X-ray diffraction with high acquisition rate (30 Hz) using isotactic polypropylene in a piston-driven slit flow with high wall shear rates (up to ≈900 s(-1) ). We focus on crystallization within the shear layers that form in the high shear rate regions near the walls. Remarkably, the kinetics of the crystallization process show no dependence on either flow rate or flow time; the crystallization progresses identically regardless. Stronger or longer flows only increase the thickness of the layers. A conceptual model is proposed to explain the phenomenon. Above a certain threshold, the number of shish-kebabs formed affects the rheology such that further structure formation is halted. The critical amount is reached already within 0.1 s under the current flow conditions. The change in rheology is hypothesized to be a consequence of the "hairy" nature of shish. Our results have large implications for process modelling, since they suggest that for injection molding type flows, crystallization kinetics can be considered independent of deformation history.
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Affiliation(s)
- Peter C Roozemond
- Department of Mechanical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600MB, Eindhoven, The Netherlands
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40
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Wang Z, Chen X, Meng L, Cui K, Wu L, Li L. A small-angle x-ray scattering system with a vertical layout. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2014; 85:125110. [PMID: 25554329 DOI: 10.1063/1.4903760] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A small-angle x-ray scattering (SAXS) system with a vertical layout (V-SAXS) has been designed and constructed for in situ detection on nanostructures, which is well suitable for in situ study on self-assembly of nanoparticles at liquid interface and polymer processing. A steel-tower frame on a reinforced basement is built as the supporting skeleton for scattering beam path and detector platform, ensuring the system a high working stability and a high operating accuracy. A micro-focus x-ray source combining parabolic three-dimensional multi-layer mirror and scatteringless collimation system provides a highly parallel beam, which allows us to detect the very small angle range. With a sample-to-detector distance of 7 m, the largest measurable length scale is 420 nm in real space. With a large sample zone, it is possible to install different experimental setups such as film stretching machine, which makes the system perfect to follow the microstructures evolution of materials during processing. The capability of the V-SAXS on in situ study is tested with a drying experiment of a free latex droplet, which confirms our initial design.
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Affiliation(s)
- Zhen Wang
- National Synchrotron Radiation Lab and College of Nuclear Science and Technology, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Xiaowei Chen
- National Synchrotron Radiation Lab and College of Nuclear Science and Technology, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Lingpu Meng
- National Synchrotron Radiation Lab and College of Nuclear Science and Technology, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Kunpeng Cui
- National Synchrotron Radiation Lab and College of Nuclear Science and Technology, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Lihui Wu
- National Synchrotron Radiation Lab and College of Nuclear Science and Technology, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Liangbin Li
- National Synchrotron Radiation Lab and College of Nuclear Science and Technology, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
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41
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42
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Roozemond PC, Ma Z, Cui K, Li L, Peters GWM. Multimorphological Crystallization of Shish-Kebab Structures in Isotactic Polypropylene: Quantitative Modeling of Parent–Daughter Crystallization Kinetics. Macromolecules 2014. [DOI: 10.1021/ma501108c] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peter C. Roozemond
- Department of Mechanical Engineering, Eindhoven University of Technology, PO Box 513, 5600MB Eindhoven, The Netherlands
| | - Zhe Ma
- Department of Mechanical Engineering, Eindhoven University of Technology, PO Box 513, 5600MB Eindhoven, The Netherlands
| | - Kunpeng Cui
- National Synchrotron Radiation Lab and College of Nuclear Science
and Technology, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Liangbin Li
- National Synchrotron Radiation Lab and College of Nuclear Science
and Technology, CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Gerrit W. M. Peters
- Department of Mechanical Engineering, Eindhoven University of Technology, PO Box 513, 5600MB Eindhoven, The Netherlands
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43
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Su F, Zhou W, Li X, Ji Y, Cui K, Qi Z, Li L. Flow-Induced Precursors of Isotactic Polypropylene: An in Situ Time and Space Resolved Study with Synchrotron Radiation Scanning X-ray Microdiffraction. Macromolecules 2014. [DOI: 10.1021/ma5005293] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fengmei Su
- National
Synchrotron Radiation
Lab and College of Nuclear Science and Technology, CAS Key Laboratory
of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Weiming Zhou
- National
Synchrotron Radiation
Lab and College of Nuclear Science and Technology, CAS Key Laboratory
of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Xiangyang Li
- National
Synchrotron Radiation
Lab and College of Nuclear Science and Technology, CAS Key Laboratory
of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Youxin Ji
- National
Synchrotron Radiation
Lab and College of Nuclear Science and Technology, CAS Key Laboratory
of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Kunpeng Cui
- National
Synchrotron Radiation
Lab and College of Nuclear Science and Technology, CAS Key Laboratory
of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Zeming Qi
- National
Synchrotron Radiation
Lab and College of Nuclear Science and Technology, CAS Key Laboratory
of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
| | - Liangbin Li
- National
Synchrotron Radiation
Lab and College of Nuclear Science and Technology, CAS Key Laboratory
of Soft Matter Chemistry, University of Science and Technology of China, Hefei, China
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44
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Han R, Li Y, Wang Q, Nie M. Critical formation conditions for β-form hybrid shish-kebab and its structural analysis. RSC Adv 2014. [DOI: 10.1039/c4ra12828a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Critical formation conditions for β-form hybrid shish kebab and its unique condensed state structure.
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Affiliation(s)
- Rui Han
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065, China
| | - Yijun Li
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065, China
| | - Qi Wang
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065, China
| | - Min Nie
- State Key Laboratory of Polymer Materials Engineering
- Polymer Research Institute of Sichuan University
- Chengdu 610065, China
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