Non-isothermal Crystallization Behaviors of Polyvinyl alcohol/Hydroxyethyl Cellulose Blend Films

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• 作者：Feng Lin (2)
  Huafeng Tian (1)
  Qingqing Jia (1)
  Aimin Xiang (1)
  Yangbo Li (1)
  Wenshuang Pan (1)
  Haiyun Xu (1)
  
• 关键词：PVA ; HEC ; Blend ; Non ; isothermal crystallization ; Spherocrystal
• 刊名：Journal of Polymers and the Environment
• 出版年：2013
• 出版时间：June 2013
• 年：2013
• 卷：21
• 期：2
• 页码：343-349
• 全文大小：540KB
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• 作者单位：Feng Lin (2)
  Huafeng Tian (1)
  Qingqing Jia (1)
  Aimin Xiang (1)
  Yangbo Li (1)
  Wenshuang Pan (1)
  Haiyun Xu (1)
  
  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
  
• ISSN：1572-8900

文摘

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.