Related Experiment Video
Updated: Mar 15, 2026

Molecular Entanglement and Electrospinnability of Biopolymers
Published on: September 3, 2014
Relationship between morphologies and mechanical properties of hydroxypropyl methylcellulose/hydroxypropyl starch
Yanfei Wang1, Liang Zhang2, Hongsheng Liu3
1Centre for Polymer from Renewable Resources, SFSE, SCUT, Guangzhou, China; CSIRO, Manufacturing Flagship, Melbourne, Vic 3168, Australia.
Abstract:
Edible films from the blending hydroxypropyl methylcellulose (HPMC) with hydroxypropyl starch (HPS) have been developed. This work focuses on the relationship between morphologies and mechanical properties of such systems. To aid understanding of blend morphology, a new technique used to identify the two phases through dying of the HPS by iodine has been developed, which provided a simple and convenient way to clearly distinguish between HPMC and HPS phases. It was found that the blend system is immiscible and there is phase transition point depending on blending ratio and solution concentration. The lower transparency point of the blend and phase transition reign of HPMC from continuous phase to separated phase correspond with the variation of tensile modulus. The modulus and elongation decreased with increased solution concentration, which is correlatable with the morphologies present, where it was found that the HPMC gradually changed from a continuous phase to a distinct phase.
More Related Videos
15:33Microwave-assisted Functionalization of Polyethylene glycol and On-resin Peptides for Use in Chain Polymerizations and Hydrogel Formation
Published on: October 29, 2013
08:52Method to Produce Durable Pellets at Lower Energy Consumption Using High Moisture Corn Stover and a Corn Starch Binder in a Flat Die Pellet Mill
Published on: June 15, 2016
Related Concept Videos
Bending of Members Made of Several Materials
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each material's...
Generalized Hooke's Law
Hooke's Law
Problem Solving on Stress and Strain
Shearing Strain