1
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Xue J, Lu Y, Wang B, Chen J, Shen C, Zhang B. The Isothermal Melting Kinetics of Ultra-High Molecular Weight Polyethylene Crystals. Macromol Rapid Commun 2024; 45:e2300704. [PMID: 38346444 DOI: 10.1002/marc.202300704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/22/2024] [Indexed: 02/18/2024]
Abstract
The isothermal melting behaviors of ultra-high molecular weight polyethylene (UHMWPE) with different entangled states (i.e., nascent and melt-crystallized samples) are studied. For two kinds of UHMWPE samples, the result shows that the relative content of survived crystals (Xs) exponentially decreases with time and reaches a constant value. It is suggested that such a melting behavior is related to the observed nonlinear growth of crystals induced by the kinetically rejected entanglements accumulated at the growth front. Additionally, the exponential decay of Xs with time provides a characteristic melting time (τ) for the melting process. Compared to the melt-crystallized UHMWPE, the τ value of nascent UHMWPE is generally longer even in a higher temperature range, which is mainly because the former has a larger entanglement density difference. Furthermore, these observations demonstrate that UHMWPEs with different entangled states have an analogous melting mechanism since they exhibit a similar melting activation energy (≈1300 kJ mol-1).
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Affiliation(s)
- Jianwei Xue
- School of Materials Science & Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Yaguang Lu
- School of Materials Science & Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Binghua Wang
- School of Materials Science & Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Jingbo Chen
- School of Materials Science & Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Changyu Shen
- School of Materials Science & Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Bin Zhang
- School of Materials Science & Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China
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2
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Wang Z, Sangroniz L, Xu J, Zhu C, Müller A. Polymer Physics behind the Gel-Spinning of UHMWPE Fibers. Macromol Rapid Commun 2024:e2400124. [PMID: 38602184 DOI: 10.1002/marc.202400124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 04/02/2024] [Indexed: 04/12/2024]
Abstract
Gel-spinning of ultra-high molecular weight polyethylene (UHMWPE) fibers has attracted great interest in academia and industry since its birth and commercialization in the 1980s, due to unique properties such as high modulus, low density, and excellent chemical resistance. However, the high viscosity and long relaxation time greatly complicate processing. In industry, solvents, like decalin and paraffin oil, usually disentangle the physical networks and promote final drawability. From extruding the polymer solution to post-solid-stretching, many polymer physics problems that accompany high-modulus fiber gel-spinning should be understood and addressed. In this review, by detailed discussions about the effect of entanglements and intracrystalline chain dynamics on the mechanical properties of UHMWPE, theoretical descriptions of the structure formation of disentangled UHMWPE crystals, and the origin of high modulus and strength of final fibers are provided. Several physical intrinsic key factors are also discussed, revealing why UHMWPE is an ideal material for producing high-performance fibers.
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Affiliation(s)
- Zefan Wang
- School of Chemistry and Environmental Engineering, Shenzhen University, No. 3688, Nanhai Avenue, Nanshan District, Shenzhen, 518060, China
| | - Leire Sangroniz
- POLYMAT and Department of Advanced Polymers and Materials: Physics, Chemistry and Technology, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, Donostia-San Sebastián, 20018, Spain
| | - Jian Xu
- School of Chemistry and Environmental Engineering, Shenzhen University, No. 3688, Nanhai Avenue, Nanshan District, Shenzhen, 518060, China
| | - Caizhen Zhu
- School of Chemistry and Environmental Engineering, Shenzhen University, No. 3688, Nanhai Avenue, Nanshan District, Shenzhen, 518060, China
| | - Alejandro Müller
- POLYMAT and Department of Advanced Polymers and Materials: Physics, Chemistry and Technology, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizabal 3, Donostia-San Sebastián, 20018, Spain
- IKERBASQUE, Basque Foundation for Science, Plaza Euskadi 5, Bilbao, 48009, Spain
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3
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Jin F, Huang Z, Zheng Y, Sun C, Kafle N, Ma J, Pan P, Miyoshi T. Impact of Entanglement on Folding of Semicrystalline Polymer during Crystallization. ACS Macro Lett 2023; 12:1138-1143. [PMID: 37503873 DOI: 10.1021/acsmacrolett.3c00364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Upon cooling, semicrystalline polymers experience crystallization and form alternatively stacked layers consisting of thin crystal lamellae and amorphous ones. The unique morphology, crystallinity, and crystallization kinetics highly depend on the molecular weight. Therefore, it is deduced that entanglement impacts crystallization kinetics, as well as hierarchically crystalline structures. However, the impact of entanglement on folded crystalline chains has not been well understood due to experimental difficulties. In this work, chain-folding structures for seven 13C CH3 labeled poly(l-lactic acid)s with various molecular weights (Mws) were investigated by 13C-13C double quantum NMR spectroscopy. As a result, chain-folding events were categorized into three different Mw regimes: (i) The lowest Mw sample (2K g/mol) adopts an extended chain conformation (folding number, n = 0) (regime I); (ii) Intermediate Mw ones possess mixtures of non- and once-folded structures, and the once-folded fraction suddenly increases above the entanglement length (Me), up to Mw = 45K g/mol (regime II); (iii) The high Mw ones (Mw > 45K g/mol) adopt the highest chance for an adjacent re-entry structure with n = 1.0 in the well-developed entangled network (regime III). It was suggested that entanglement induces folding of the semicrystalline polymer.
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Affiliation(s)
- Fan Jin
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Zheng Huang
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Ying Zheng
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325-3909, United States
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
- Institute of Zhejiang University-Quzhou, 99 Zheda Road, Quzhou 324000, China
| | - Chenxuan Sun
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325-3909, United States
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
- Institute of Zhejiang University-Quzhou, 99 Zheda Road, Quzhou 324000, China
| | - Navin Kafle
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Jiayang Ma
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Pengju Pan
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
- Institute of Zhejiang University-Quzhou, 99 Zheda Road, Quzhou 324000, China
| | - Toshikazu Miyoshi
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325-3909, United States
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4
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Zhang Z, Kang X, Jiang Y, Cai Z, Li S, Cui D. Access to Disentangled Ultrahigh Molecular Weight Polyethylene via a Binuclear Synergic Effect. Angew Chem Int Ed Engl 2023; 62:e202215582. [PMID: 36418237 DOI: 10.1002/anie.202215582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/21/2022] [Accepted: 11/23/2022] [Indexed: 11/25/2022]
Abstract
Disentangled ultrahigh molecular weight polyethylene (dis-UHMWPE) has excellent processability but can be achieved under extreme conditions. Herein, we report ethylene polymerization with the binuclear half-sandwich scandium complexes C1-Sc2 and C2-Sc2 to afford UHMWPE. C1-Sc2 bearing a short linker shows higher activity and gives higher molecular weight PEs than C2-Sc2 containing a flexible spacer and the mononuclear Sc1 . Strikingly, all UHMWPEs isolated from C1-Sc2 under broad temperature range (25-120 °C) and wide ethylene pressures (2-13 bar) feature very low degree of entanglement as proved by rheological test, DSC annealing study and SEM. These dis-UHMWPEs are facilely mediated solid-state-process at 130 °C and their tensile strength and modulus reach up to 149.2 MPa and 1.5 GPa, respectively. DFT simulations reveal that the formation of dis-UHMWPE is attributed to the binuclear synergic effect and the agostic interaction between the active center and the growing chain.
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Affiliation(s)
- Zhen Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China.,Department of Materials Science and Engineering, Jilin University, 130022, Changchun, China
| | - Xiaohui Kang
- College of Pharmacy, Dalian Medical University, 116044, Dalian, China
| | - Yang Jiang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, 230026, Hefei, China
| | - Zhongyi Cai
- Department of Materials Science and Engineering, Jilin University, 130022, Changchun, China
| | - Shihui Li
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, 230026, Hefei, China
| | - Dongmei Cui
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022, Changchun, China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, 230026, Hefei, China
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5
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Gote RP, Romano D, van der Eem J, Zhao J, Zhou F, Rastogi S. Unprecedented Mechanical Properties in Linear UHMWPE Using a Heterogeneous Catalytic System. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c02215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Ravindra P. Gote
- Physical Science and Engineering Division, King Abdullah University of Science and Technology, 4700 KAUST, Thuwal23955-6900, Kingdom of Saudi Arabia
- Department of Biobased Materials, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MDMaastricht, the Netherlands
| | - Dario Romano
- Physical Science and Engineering Division, King Abdullah University of Science and Technology, 4700 KAUST, Thuwal23955-6900, Kingdom of Saudi Arabia
- Department of Biobased Materials, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MDMaastricht, the Netherlands
| | - Joris van der Eem
- Physical Science and Engineering Division, King Abdullah University of Science and Technology, 4700 KAUST, Thuwal23955-6900, Kingdom of Saudi Arabia
| | - Jiayi Zhao
- Physical Science and Engineering Division, King Abdullah University of Science and Technology, 4700 KAUST, Thuwal23955-6900, Kingdom of Saudi Arabia
| | - Fuhai Zhou
- Physical Science and Engineering Division, King Abdullah University of Science and Technology, 4700 KAUST, Thuwal23955-6900, Kingdom of Saudi Arabia
| | - Sanjay Rastogi
- Physical Science and Engineering Division, King Abdullah University of Science and Technology, 4700 KAUST, Thuwal23955-6900, Kingdom of Saudi Arabia
- Department of Biobased Materials, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MDMaastricht, the Netherlands
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6
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Ozerin AN, Golubev EK, Ivanchev SS, Aulov VA, Kechek’yan AS, Kurkin TS, Ivan’kova EM, Adonin NY. Reactor Powders of Ultra-high Molecular Weight Polyethylene for Solid-state Processing into High-strength Materials and Products. POLYMER SCIENCE SERIES A 2022. [DOI: 10.1134/s0965545x22020067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Wang H, Yan X, Tang X, Ma Y, Fan X, Li W, Yu W, Wang J, Yang Y. Contribution of the Initially Entangled State and Particle Size to the Sintering Kinetics of UHMWPE. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02058] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Handing Wang
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, P. R. China
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Xiang Yan
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, P. R. China
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Xin Tang
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, P. R. China
- Ningbo Key Laboratory of Specialty Polymers, School of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yulong Ma
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, P. R. China
- Ningbo Key Laboratory of Specialty Polymers, School of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Xiaoqiang Fan
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, P. R. China
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Wei Li
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, P. R. China
- Ningbo Key Laboratory of Specialty Polymers, School of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, P. R. China
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Wei Yu
- Advanced Rheology Institute, Department of Polymer Science and Engineering, State Key Laboratory for Metal Matrix Composite Materials, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Jingdai Wang
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, P. R. China
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yongrong Yang
- Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, P. R. China
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9
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Micro-Macro Scale Relationship in Creep Deformation of Ultra High Molecular Weight Polyethylene. CHINESE JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1007/s10118-021-2628-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Chu L, Xu K, Graf R, Yan ZC, Li J, Yao YF. Dynamic heterogeneity in homogeneous polymer melts. SOFT MATTER 2021; 17:6081-6087. [PMID: 34109344 DOI: 10.1039/d1sm00017a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Chain entanglement behaviors were studied by 1H Hahn echo nuclear magnetic resonance (NMR) and 1H double-quantum (DQ) NMR experiments. Poly(ethylene oxide) (PEO) was chosen to investigate the chain entanglement behaviors. The 1H Hahn echo NMR results demonstrate that the critical molecular weight of PEO is approximately 6 kg mol-1. Above this critical molecular weight, chain entanglements start to occur in the melts resulting in anisotropic motions of polymer chain. The 1H DQ NMR observations establish that PEO melts with molecular weights above the critical value exhibit dynamical entanglements. The entangled networks, formed by PEO with a molecular weight of 480 kg mol-1 (PEO480), present slow mobility and rather homogeneously distributed chain entanglements, while the entangled networks, formed by PEO with a molecular weight of 255 kg mol-1 (PEO255), present fast mobility and obvious dynamic heterogeneity in the distribution of chain entanglement. Short chain PEOs like that with a molecular weight of 2 kg mol-1 are demonstrated to function like solvents when being added in an appropriate concentration to PEO480, and the dilution effect increases the chain mobility of PEO480. Moreover, properly diluted PEO480 networks exhibit dynamic heterogeneity similar to that observed in PEO255.
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Affiliation(s)
- Linlin Chu
- Physics Department & Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronic Science, East China Normal University, North Zhongshan Road 3663, 200062 Shanghai, P. R. China.
| | - Kaipin Xu
- Physics Department & Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronic Science, East China Normal University, North Zhongshan Road 3663, 200062 Shanghai, P. R. China. and Suzhou Niumag Analytical Instrument Corporation, Suzhou 215011, China
| | - Robert Graf
- Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Zhi-Chao Yan
- Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518055, China.
| | - Junfang Li
- Shanghai institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China.
| | - Ye-Feng Yao
- Physics Department & Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronic Science, East China Normal University, North Zhongshan Road 3663, 200062 Shanghai, P. R. China.
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11
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Saha S, Bonda S, Tripathi SN, Shukla DK, Srivastava VK, Srinivasa Rao GS, Jasra RV. Photochromic films prepared by solid state processing of disentangled ultrahigh molecular weight polyethylene and photochromic dyes composites. J Appl Polym Sci 2021. [DOI: 10.1002/app.50188] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Sukdeb Saha
- Reliance Research and Development Centre, Vadodara Manufacturing Division Reliance Industries Ltd. Vadodara India
| | - Sateesh Bonda
- Reliance Research and Development Centre, Vadodara Manufacturing Division Reliance Industries Ltd. Vadodara India
| | - Sandeep Nath Tripathi
- Reliance Research and Development Centre, Vadodara Manufacturing Division Reliance Industries Ltd. Vadodara India
| | - Devesh Kumar Shukla
- Reliance Research and Development Centre, Vadodara Manufacturing Division Reliance Industries Ltd. Vadodara India
| | - Vivek Kumar Srivastava
- Reliance Research and Development Centre, Vadodara Manufacturing Division Reliance Industries Ltd. Vadodara India
| | - Gandham Satya Srinivasa Rao
- Reliance Research and Development Centre, Vadodara Manufacturing Division Reliance Industries Ltd. Vadodara India
| | - Raksh Vir Jasra
- Reliance Research and Development Centre, Vadodara Manufacturing Division Reliance Industries Ltd. Vadodara India
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12
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Fiorentino A, Panariti P, van Turnhout L, Spronck M, Klein A, Schmitz S, Rastogi S, Blom B, Romano D. Immobilization of [VCl 3(N-2,6-Me 2C 6H 3)] Complex on Silica Supports: Synthesis and Catalytic Testing for Ethylene Polymerization. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01908] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Antonio Fiorentino
- Maastricht Science Program, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Persi Panariti
- Maastricht Science Program, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Lars van Turnhout
- Maastricht Science Program, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Mitch Spronck
- Aachen Maastricht Institute for Biobased Materials, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD Geleen, The Netherlands
| | - Axel Klein
- Department of Chemistry, University of Cologne, Greinstrasse 6, 50939 Köln, Germany
| | - Simon Schmitz
- Department of Chemistry, University of Cologne, Greinstrasse 6, 50939 Köln, Germany
| | - Sanjay Rastogi
- Aachen Maastricht Institute for Biobased Materials, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD Geleen, The Netherlands
- Department of Biobased Materials, Faculty of Science and Engineering, Maastricht University, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD Geleen, The Netherlands
| | - Burgert Blom
- Maastricht Science Program, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands
| | - Dario Romano
- Aachen Maastricht Institute for Biobased Materials, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD Geleen, The Netherlands
- Department of Biobased Materials, Faculty of Science and Engineering, Maastricht University, Brightlands Chemelot Campus, Urmonderbaan 22, 6167 RD Geleen, The Netherlands
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13
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Hawke LGD, Romano D, Rastogi S. Nonequilibrium Melt State of Ultra-High-Molecular-Weight Polyethylene: A Theoretical Approach on the Equilibrium Process. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01152] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Laurence G. D. Hawke
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD Maastricht, The Netherlands
| | - Dario Romano
- Aachen-Maastricht Institute of BioBased Materials (AMIBM), Maastricht University, P.O. Box 616, 6200MD Maastricht, 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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Pawlak A. The Entanglements of Macromolecules and Their Influence on the Properties of Polymers. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900043] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Andrzej Pawlak
- Centre of Molecular and Macromolecular StudiesPolish Academy of Sciences Sienkiewicza 112 90‐363 Lodz Poland
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15
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Maimaitiming A, Zhang M, Hu J, Wu G. Controlling crystal polymorphism of isotactic poly(1-butene) by incorporating long chain branches. SOFT MATTER 2018; 14:8872-8878. [PMID: 30393803 DOI: 10.1039/c8sm01793j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Isotactic poly(1-butene) (iPB-1) is a high performance plastic with outstanding properties, such as flexibility, superior creep, environmental stress cracking and abrasive resistance. However, it exhibits a complex crystal polymorphism and polymorphic transformation behavior, which has limited its commercial development. In this paper, the incorporation of long chain branches (LCBs) causes coil contraction in the melt, which favors the direct melt-crystallization of form III that was generally crystallized from solutions and made of unconventional highly twined lamellae. Consequently, low-to-moderately branched iPB-1 samples as-crystallize from the melt into mixtures of form II and form III by compression-molding and fast cooling of the melt to room temperature, and the fraction of crystals of form III (fIII) increases with increasing concentration of LCBs, whereas highly branched samples can as-crystallize into pure form III with uniform crystal size distribution. The corresponding thermomechanical properties can be modified by controlling fIII.
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Affiliation(s)
- Aizezi Maimaitiming
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.
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16
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Ferreira AE, Ribeiro MR, Cramail H, Lourenço JP, Lorenzo V, Pérez E, Cerrada ML. Extraordinary mechanical performance in disentangled UHMWPE films processed by compression molding. J Mech Behav Biomed Mater 2018; 90:202-207. [PMID: 30384215 DOI: 10.1016/j.jmbbm.2018.09.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 09/21/2018] [Accepted: 09/24/2018] [Indexed: 11/27/2022]
Abstract
An approach to obtain disentangled ultra-high molecular weight polyethylene (UHMWPE) films is proposed using a common compression molding. For that, disentangled UHMWPE nascent powders from reactor are processed at temperatures lower than the main melting peak and at high pressure. Then, disentangled UHMWPE films obtained from homogeneous polymerization powders and from those that incorporate SBA-15 mesoporous silica can be easily achieved by this simple methodology. These disentangled UHMWPE based materials show very high crystallinity and, consequently, outstanding elastic modulus and hardness, both further increasing by presence of mesoporous SBA-15 in the hybrids.
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Affiliation(s)
- Ana E Ferreira
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Portugal; Laboratoire de Chimie des Polymères Organiques, UMR5629, Université Bordeaux, CNRS, INP-Bordeaux-ENSCBP, 16, Avenue Pey Berland, Pessac Cedex F-33607, France
| | - M Rosário Ribeiro
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Portugal.
| | - Henri Cramail
- Laboratoire de Chimie des Polymères Organiques, UMR5629, Université Bordeaux, CNRS, INP-Bordeaux-ENSCBP, 16, Avenue Pey Berland, Pessac Cedex F-33607, France
| | - João P Lourenço
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Portugal; Faculdade de Ciências e Tecnologia, CIQA - Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Vicente Lorenzo
- Grupo de Investigación "POLímeros: Caracterización y Aplicaciones" (U. A. del ICTP-CSIC), E.T.S.I. Industriales, Universidad Politécnica de Madrid, José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - Ernesto Pérez
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - Maria L Cerrada
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain.
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Entanglement dynamics in ultra-high molecular weight polyethylene as revealed by dielectric spectroscopy. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.07.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Cao C, Chen X, Wang J, Lin Y, Guo Y, Qian Q, Chen Q, Feng Y, Yu D, Chen X. Structure and properties of ultrahigh molecular weight polyethylene processed under a consecutive elongational flow. JOURNAL OF POLYMER RESEARCH 2017. [DOI: 10.1007/s10965-017-1422-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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