Effect of plasticizers on microstructure, compatibility and mechanical property of hydroxypropyl methylcellulose/hydroxypropyl starch blends

Liang Zhang; Xian-Fen Wang; Hongsheng Liu; Long Yu; Yanfei Wang; George P Simon; Jianya Qian

doi:10.1016/j.ijbiomac.2018.07.064

Effect of plasticizers on microstructure, compatibility and mechanical property of hydroxypropyl methylcellulose/hydroxypropyl starch blends

Int J Biol Macromol. 2018 Nov:119:141-148. doi: 10.1016/j.ijbiomac.2018.07.064. Epub 2018 Jul 26.

Authors

Liang Zhang¹, Xian-Fen Wang², Hongsheng Liu³, Long Yu⁴, Yanfei Wang⁵, George P Simon⁶, Jianya Qian²

Affiliations

¹ School of Food Science and Engineering, Yangzhou University, Yangzhou, China; Centre for Polymer from Renewable Resources, School of Food Science and Engineering, SCUT, Guangzhou, China; Department of Materials Engineering, Monash University, Clayton, Australia.
² School of Food Science and Engineering, Yangzhou University, Yangzhou, China.
³ Centre for Polymer from Renewable Resources, School of Food Science and Engineering, SCUT, Guangzhou, China. Electronic address: liuhongsheng@scut.edu.cn.
⁴ Centre for Polymer from Renewable Resources, School of Food Science and Engineering, SCUT, Guangzhou, China. Electronic address: felyu@scut.edu.cn.
⁵ Centre for Polymer from Renewable Resources, School of Food Science and Engineering, SCUT, Guangzhou, China.
⁶ Department of Materials Engineering, Monash University, Clayton, Australia.

PMID: 30016660
DOI: 10.1016/j.ijbiomac.2018.07.064

Abstract

Polymer film blends of hydroxypropyl methylcellulose (HPMC) and hydroxypropyl starch (HPS) were produced with an incorporation of three different plasticizers, including polyethylene glycol (PEG), glycerol and 1, 2-propylene glycol (PG) respectively, and the influence of these plasticizers were compared and studied by X-ray Diffraction (XRD), small angel X-ray Scattering (SAXS), optical microscope and dynamic mechanical analysis (DMA). Results showed that multi-scale structure of the blends were greatly affected by the plasticizers and therefore caused significant changes in mechanical properties. In the course, blends with glycerol presented lamellar structure rather than self-similar structure. Moreover, crystalline degree was increased with an order of glycerol > PEG > PG, whereas the compactness of amorphous region of all samples was decreased by PEG and PG.

Keywords: HPMC; Lamellar structure; Plasticizer; Starch.

MeSH terms

Hypromellose Derivatives / chemistry*
Mechanical Phenomena
Molecular Structure
Plasticizers / chemistry*
Polymers / chemistry
Starch / chemistry*
X-Ray Diffraction

Substances

Plasticizers
Polymers
Hypromellose Derivatives
Starch