期刊
CARBOHYDRATE POLYMERS
卷 135, 期 -, 页码 225-233出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2015.08.085
关键词
Starch microspheres; Hydration of starch; Glass transition; Sorption calorimetry; DSC; X-ray scattering
资金
- Knowledge Foundation (KK-stiftelsen) [20110158]
- Biofilms Research Center for Biointerfaces
- Gustav Th Ohlsson Foundation
Hydration of cross-linked starch microspheres, commercially available as a medical device, was investigated using a multi-method approach. We found that the uptake of water is accompanied by substantial swelling and changes of the polymer structure. Sorption calorimetry provided information about thermodynamics of water sorption, revealed presence of isothermal glass transition and absence of hydration-induced crystallization, observed in non-cross linked starch material. The changes in the surface and bulk properties of microspheres at different water starch concentrations were investigated using synchrotron radiation X-ray scattering and analyzed using concept of fractals. The obtained information, combined with the results of differential scanning calorimetry, was used to construct a phase diagram of the studied material. Finally, hydration induced evolution of polymer structure revealed by the X-ray scattering was linked to the changes observed during swelling with optical microscopy. (C) 2015 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据