Direct Observation of Long-Chain Branches in a Low-Density Polyethylene

Low-density polyethylene (LDPE) has short-chain branch (SCB) and long-chain branch (LCB). In particular, the influence of the structure of LCBs on polymer properties is remarkable; however, it has been difficult to precisely analyze LCB structures. In this study, we measured the chain length of LCBs...

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Autores principales: Shinohara, Ken-ichi, Yanagisawa, Masahiro, Makida, Yuu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6611765/
https://www.ncbi.nlm.nih.gov/pubmed/31278359
http://dx.doi.org/10.1038/s41598-019-46035-9
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author Shinohara, Ken-ichi
Yanagisawa, Masahiro
Makida, Yuu
author_facet Shinohara, Ken-ichi
Yanagisawa, Masahiro
Makida, Yuu
author_sort Shinohara, Ken-ichi
collection PubMed
description Low-density polyethylene (LDPE) has short-chain branch (SCB) and long-chain branch (LCB). In particular, the influence of the structure of LCBs on polymer properties is remarkable; however, it has been difficult to precisely analyze LCB structures. In this study, we measured the chain length of LCBs and the distance between branch points of LDPE by atomic force microscopy. Consequently, three LCBs were confirmed in a main chain of 162 nm, and their length were measured as 10, 31, and 18 nm. The positions of the LCBs were 33, 70, and 78 nm from the main-chain end.
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spelling pubmed-66117652019-07-15 Direct Observation of Long-Chain Branches in a Low-Density Polyethylene Shinohara, Ken-ichi Yanagisawa, Masahiro Makida, Yuu Sci Rep Article Low-density polyethylene (LDPE) has short-chain branch (SCB) and long-chain branch (LCB). In particular, the influence of the structure of LCBs on polymer properties is remarkable; however, it has been difficult to precisely analyze LCB structures. In this study, we measured the chain length of LCBs and the distance between branch points of LDPE by atomic force microscopy. Consequently, three LCBs were confirmed in a main chain of 162 nm, and their length were measured as 10, 31, and 18 nm. The positions of the LCBs were 33, 70, and 78 nm from the main-chain end. Nature Publishing Group UK 2019-07-05 /pmc/articles/PMC6611765/ /pubmed/31278359 http://dx.doi.org/10.1038/s41598-019-46035-9 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Shinohara, Ken-ichi
Yanagisawa, Masahiro
Makida, Yuu
Direct Observation of Long-Chain Branches in a Low-Density Polyethylene
title Direct Observation of Long-Chain Branches in a Low-Density Polyethylene
title_full Direct Observation of Long-Chain Branches in a Low-Density Polyethylene
title_fullStr Direct Observation of Long-Chain Branches in a Low-Density Polyethylene
title_full_unstemmed Direct Observation of Long-Chain Branches in a Low-Density Polyethylene
title_short Direct Observation of Long-Chain Branches in a Low-Density Polyethylene
title_sort direct observation of long-chain branches in a low-density polyethylene
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6611765/
https://www.ncbi.nlm.nih.gov/pubmed/31278359
http://dx.doi.org/10.1038/s41598-019-46035-9
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