中华医学超声杂志

应用化学 ›› 2011, Vol. 28 ›› Issue (07): 764-769.DOI: 10.3724/SP.J.1095.2011.00530

• 研究论文 • 上一篇    下一篇

热塑性淀粉/聚乙烯醇/蒙脱土三元纳米复合材料

赫玉欣,张玉清*   

  1. 高分子科学与纳米技术重点实验室,河南科技大学 洛阳  471003
  • 收稿日期:2010-09-13 修回日期:2010-11-10 出版日期:2011-07-10 发布日期:2011-07-10
  • 通讯作者: 张玉清，教授; Tel/Fax:0379-64237053; E-mail:zhangyq8@126.com; 研究方向：聚合物高性能化研究
  • 基金资助:
     

Thermoplastic Starch/Polyvinyl Alcohol/Montmorillonite Nanocomposites

HE Yuxin, ZHANG Yuqing*   

  1. Key Laboratory of Polymer Science and Nano-technology,Henan University of Science and Technology,Luoyang 471003
  • Received:2010-09-13 Revised:2010-11-10 Published:2011-07-10 Online:2011-07-10
  • Contact: Zhang Yuqing
  • Supported by:
     

PDF

2092

被引次数

1

摘要：

用熔融挤出的方法制备了甘油塑化热塑性淀粉（TPS）/聚乙烯醇（PVA）/蒙脱土（MMT）纳米复合材料，添加蒙脱土和聚乙烯醇用以提高热塑性淀粉材料的力学性能。 在相对湿度50%的条件下，复合材料的XRD衍射谱图和透射电子显微镜测试表明，MMT以剥离状态均匀分布在TPS/PVA基体中；力学测试表明，当MMT的质量分数从0％增至5％时，复合材料的力学性能明显提高。 当蒙脱土的质量分数为3%时，复合材料最大抗张强度达到13.24 MPa，杨氏模量达到61.46 MPa。 这说明蒙脱土在复合材料中可以起到物理交联点的作用，提高了复合材料的力学性能。

 

关键词: 热塑性淀粉, 纳米复合材料, 蒙脱土, 聚乙烯醇, 剥离

Abstract:

Melt extrusion method was adopted to produce thermoplastic starch(TPS)/polyvinyl alcohol(PVA)/montmorillonite(MMT) nanocomposites. The mechanical properties of TPS were improved effectively by adding certain amount of MMT and PVA. Under a relative humidity of 50%, the X-ray diffraction and transmission electron microscopy of the composites showed that MMT was exfoliated and well dispersed in TPS/PVA matrix. Mechanical property test showed that the mechanical property of the composites[w(MMT)=0% to 5%] was obviously improved. The tensile strength of the composite[w(MMT)=3%] reached 13.24 MPa and the Young′s modulus reached 61.46 MPa. This indicates that MMT is likely to play a role of physical crosslinking to improve the mechanical properties of composites.

Key words: thermoplastic starch, nanocomposite, montmorillonite, polyvinyl alcohol, exfolated

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