Non-isothermal Crystallization Behaviors of Polyvinyl alcohol/Hydroxyethyl Cellulose Blend Films |
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| Authors: | Feng Lin Huafeng Tian Qingqing Jia Aimin Xiang Yangbo Li Wenshuang Pan Haiyun Xu |
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| Affiliation: | 2. Orthopedics Department, General Hospital of PLA, Beijing, 100039, China
1. School of Material and Mechanical Engineering, Beijing Technology and Business University, Beijing, 100048, China
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| Abstract: | In this work, polyvinyl alcohol/hydroxyethyl cellulose (PVA/HEC) blend films were fabricated by solution casting and the crystalline morphology as well as non-isothermal crystallization kinetics of the blends was investigated detailedly with polarized optical microscopy, X-ray diffraction and differential scanning calorimetry. With fixed cooling rate, the crystallization time for PVA/HEC was less than that for neat PVA. The crystallization peak temperature of PVA/HEC decreased first and then increased with the increase of HEC. With higher cooling rate, the crystallinity and crystallization time decreased. It worth noting that large spherocrystal with a size of 35 μm was observed by polarized optical microscopy for PVA/HEC blends for the first time. |
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