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Particle morphology, structure and properties of nascent ultra-high molecular weight polyethylene
The effects of particle morphology on the structure and swelling/dissolution and rheological properties of nascent ultra-high molecular weight polyethylene (UHMWPE) in liquid paraffin (LP) were elaborately explored in this article. Nascent UHMWPE with different particle morphologies was prepared via...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7481705/ https://www.ncbi.nlm.nih.gov/pubmed/32968526 http://dx.doi.org/10.1098/rsos.200663 |
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author | Zhang, Wenyang Wu, Zhengwen Mao, Hanjun Wang, Xinwei Li, Jianlong Mai, Yongyi Yu, Jianyong |
author_facet | Zhang, Wenyang Wu, Zhengwen Mao, Hanjun Wang, Xinwei Li, Jianlong Mai, Yongyi Yu, Jianyong |
author_sort | Zhang, Wenyang |
collection | PubMed |
description | The effects of particle morphology on the structure and swelling/dissolution and rheological properties of nascent ultra-high molecular weight polyethylene (UHMWPE) in liquid paraffin (LP) were elaborately explored in this article. Nascent UHMWPE with different particle morphologies was prepared via pre-polymerization technique and direct polymerization. The melting temperature and crystallinity of UHMWPE resins with different particle morphologies were compared, and a schematic diagram was proposed to illustrate the mechanism of UHMWPE particle growth synthesized by pre-polymerization method and direct polymerization. The polymer globules in the nascent UHMWPE prepared by using pre-polymerization technique are densely packed and a positive correlation between the particle size and the viscosity-averaged molecular weight can be observed. The split phenomenon of particles and the fluctuation in the viscosity of UHMWPE/LP system prepared by direct polymerization can be observed at a low heating rate and there is no correlation between particle size and viscosity-averaged molecular weight. |
format | Online Article Text |
id | pubmed-7481705 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | The Royal Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-74817052020-09-22 Particle morphology, structure and properties of nascent ultra-high molecular weight polyethylene Zhang, Wenyang Wu, Zhengwen Mao, Hanjun Wang, Xinwei Li, Jianlong Mai, Yongyi Yu, Jianyong R Soc Open Sci Chemistry The effects of particle morphology on the structure and swelling/dissolution and rheological properties of nascent ultra-high molecular weight polyethylene (UHMWPE) in liquid paraffin (LP) were elaborately explored in this article. Nascent UHMWPE with different particle morphologies was prepared via pre-polymerization technique and direct polymerization. The melting temperature and crystallinity of UHMWPE resins with different particle morphologies were compared, and a schematic diagram was proposed to illustrate the mechanism of UHMWPE particle growth synthesized by pre-polymerization method and direct polymerization. The polymer globules in the nascent UHMWPE prepared by using pre-polymerization technique are densely packed and a positive correlation between the particle size and the viscosity-averaged molecular weight can be observed. The split phenomenon of particles and the fluctuation in the viscosity of UHMWPE/LP system prepared by direct polymerization can be observed at a low heating rate and there is no correlation between particle size and viscosity-averaged molecular weight. The Royal Society 2020-08-05 /pmc/articles/PMC7481705/ /pubmed/32968526 http://dx.doi.org/10.1098/rsos.200663 Text en © 2020 The Authors. http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/http://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. |
spellingShingle | Chemistry Zhang, Wenyang Wu, Zhengwen Mao, Hanjun Wang, Xinwei Li, Jianlong Mai, Yongyi Yu, Jianyong Particle morphology, structure and properties of nascent ultra-high molecular weight polyethylene |
title | Particle morphology, structure and properties of nascent ultra-high molecular weight polyethylene |
title_full | Particle morphology, structure and properties of nascent ultra-high molecular weight polyethylene |
title_fullStr | Particle morphology, structure and properties of nascent ultra-high molecular weight polyethylene |
title_full_unstemmed | Particle morphology, structure and properties of nascent ultra-high molecular weight polyethylene |
title_short | Particle morphology, structure and properties of nascent ultra-high molecular weight polyethylene |
title_sort | particle morphology, structure and properties of nascent ultra-high molecular weight polyethylene |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7481705/ https://www.ncbi.nlm.nih.gov/pubmed/32968526 http://dx.doi.org/10.1098/rsos.200663 |
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