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Lookup NU author(s): Professor David XieORCiD
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
A widely recognized challenge in starch chemistry is to manipulate the graft copolymerization onto starch melt by reactive extrusion (REX). To understand the complex in-situ graft copolymerization in highly concentrated systems, we firstly used a mixer to achieve a homogeneous viscous starch melt, and then undertook dynamic rheological measurements to study the rheokinetics of the reaction. The in-situ synthesis also facilitated the characterization of the microstructures of reaction products. The melt mixture could be regarded to be completely micromixed since the rheokinetics was predominated by the reaction kinetics. The rheological characterization revealed that G′ of hydrogels followed a linear progression with the crosslinker concentration. Nevertheless, the reaction temperature and initiator content had little influence on the final microstructure of hydrogels, most likely due to the strong chain transfer reaction in the melt. Additionally, high-amylose starches tended to form grafted hydrogels with a high physical crosslinking density.
Author(s): Bao X, Yu L, Simon GP, Shen S, Xie F, Liu H, Chen L, Zhong L
Publication type: Article
Publication status: Published
Journal: Carbohydrate Polymers
Year: 2018
Volume: 192
Pages: 1-9
Print publication date: 15/07/2018
Online publication date: 15/03/2018
Acceptance date: 14/03/2018
Date deposited: 23/05/2023
ISSN (print): 0144-8617
ISSN (electronic): 1879-1344
Publisher: Elsevier
URL: https://doi.org/10.1016/j.carbpol.2018.03.040
DOI: 10.1016/j.carbpol.2018.03.040
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