高等学校化学学报 ›› 2014, Vol. 35 ›› Issue (8): 1810.doi: 10.7503/cjcu20140273

• 高分子化学 • 上一篇    下一篇

β-磷酸三钙与聚乙烯醇的相互作用及其对聚乙烯醇热性能和力学性能的影响

王欢, 陈宁(), 王琪   

  1. 高分子材料工程国家重点实验室(四川大学), 四川大学高分子研究所, 成都 610065
  • 收稿日期:2014-03-28 出版日期:2014-08-10 发布日期:2014-07-04
  • 作者简介:联系人简介: 陈 宁, 男, 博士, 讲师, 主要从事聚合物结构与性能研究. E-mail: ningchen@scu.edu.cn
  • 基金资助:
    国家国际科技合作计划(批准号: 2013DFG52300)和国家自然科学基金(批准号: 51121001)资助

Interaction Between β-Tricalcium Phosphate and Poly(vinyl alcohol) and Its Effect on the Thermal and Mechanical Properties of Poly(vinyl alcohol)

WANG Huan, CHEN Ning*(), WANG Qi   

  1. State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China
  • Received:2014-03-28 Online:2014-08-10 Published:2014-07-04
  • Contact: CHEN Ning E-mail:ningchen@scu.edu.cn
  • Supported by:
    Supported by the International Science and Technology Cooperation Program of China(No 2013DFG52300) and the National Natural Science Foundation of China(No 51121001)

摘要:

以水为增塑剂, 利用分子复合和增塑的方法, 制备了聚乙烯醇(PVA)/β-磷酸三钙(β-TCP)复合材料, 通过傅里叶变换红外光谱(FTIR)、 X射线光电子能谱(XPS)、 扫描电子显微镜(SEM)、 差示扫描热分析(DSC)及热重分析(TGA)等手段研究了PVA与β-TCP间的相互作用及其对复合材料热性能和力学性能的影响. 结果表明, β-TCP中的Ca2+与PVA中的OH形成配位键, 破坏了PVA自身氢键的缔合状态, 使PVA中的小分子脱除反应在更高的温度下进行, 提高了PVA的热稳定性, 当β-TCP质量分数为30%时, 复合材料的初始分解温度由PVA的235.4 ℃提高到268.6 ℃, 增塑剂水可显著降低PVA的熔点, 从而获得约138 ℃的热塑加工窗口. β-TCP在PVA基体中的良好分散及其与PVA基体间的良好界面相互作用使复合材料具有优良的力学性能.

关键词: 聚乙烯醇, β-磷酸三钙, 配位结构, 热性能, 力学性能

Abstract:

Poly(vinyl alcohol)/β-tricalcium phosphate(PVA/β-TCP) composites were prepared using water as plasticizer, and the structure and properties of the composites were studied by Fourier transform infrared spectrometer(FTIR), X-ray photoelectron spectroscopy(XPS), scanning electron microscopy(SEM), differential scanning calorimetry(DSC), thermogravimetric analysis(TGA) and so on. The results showed that the coordination bond between β-TCP and PVA was formed, and it could increase the initial thermal decomposition temperature of PVA, while the melting temperature of composites decreased greatly with the addition of plasticizer, thus about 138 ℃ thermal processing window was obtained. Also, the composites had excellent mechanical properties with the well dispersion of β-TCP particles in PVA matrix and good phase interface between β-TCP and PVA.

Key words: Poly(vinyl alcohol), β-Tricalcium phosphate, Coordination structure, Thermal property, Mechanical property

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