Morphology and properties of thermal/cooling-gel bi-phasic systems based on hydroxypropyl methylcellulose and hydroxypropyl starch

Yanfei Wang, Long Yu, Fengwei Xie, Liang Zhang, Lisa Liao, Hongsheng Liu, Ling Chen

Research output: Journal PublicationArticlepeer-review

33 Citations (Scopus)

Abstract

The miscibility between two gels with largely different gelation behaviors is an interesting topic both scientifically and practically. This paper reports a novel bi-phasic system based on two natural polymers, hydroxypropyl methylcellulose (HPMC) which has a thermal gelation behavior, and hydroxypropyl starch (HPS) which has a cooling gelation property. While both biopolymers have the same glucose unit grafted with propylene oxide, and are compatible to a certain degree, they were observed immiscible because of their different gelation behaviors. The immiscibility of these two compatible polymers could result in special structures leading to different blend film properties. Regarding this, the morphology, thermal transition, mechanical properties and oxygen barrier property could be well tailored by the ratio of two biopolymers and the environmental conditions. The knowledge obtained from this work could be useful for understanding other similar systems with desirable structure and properties.

Original languageEnglish
Pages (from-to)46-52
Number of pages7
JournalComposites Part B: Engineering
Volume101
DOIs
Publication statusPublished - 15 Sept 2016
Externally publishedYes

Keywords

  • Casting
  • Hybrid
  • Mechanical properties
  • Physical properties

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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