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Journal of Polymer Research
Erschienen in: Journal of Polymer Research 7/2016

01.07.2016 | Original Paper

Solvent gradient fractionation and chain microstructure of complex branched polyethylene resin

verfasst von: Yanhu Xue, Shuqin Bo, Xiangling Ji

Erschienen in: Journal of Polymer Research | Ausgabe 7/2016

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Abstract

A complex branched polyethylene resin with excellent processing and film-forming properties is fractionated through solvent gradient fractionation (SGF) technique. Here, the good solvent is 1,2,4-trimethylbenzene (TMB) and poor solvent is ethyl cellosolve (ECS). The fractions are further analyzed using high-temperature gel permeation chromatography (GPC) coupled with triple detectors (refractive index (RI)-light scattering (LS)-viscometer (VIS)), and 13C-nuclear magnetic resonance spectroscopy (13C-NMR). The molecular weight distribution of SGF fractions is very narrow, most of them are less than 1.1. The molecular weights of SGF fractions gradually increase as the content of good solvent increases in the mixture. The fractions with different molecular weights all have branching structure, the short chain branching is major in all fractions and along with certain content of long chain branching. Branching distribution across the molecular weight distribution is discussed in detail, and branching distribution within a SGF fraction is also researched.
Vorheriger Artikel Insights into the physico-chemical behavior of CoCl2/polyimide hybrid materials
Nächster Artikel Influence of macromolecular structure of novel 2- and 4-armed polylactides on their physicochemical properties and in vitro degradation process

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Metadaten
Titel
Solvent gradient fractionation and chain microstructure of complex branched polyethylene resin
verfasst von
Yanhu Xue
Shuqin Bo
Xiangling Ji
Publikationsdatum
01.07.2016
Verlag
Springer Netherlands
Erschienen in
Journal of Polymer Research / Ausgabe 7/2016
Print ISSN: 1022-9760
Elektronische ISSN: 1572-8935
DOI
https://doi.org/10.1007/s10965-016-1026-1

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