引用本文:
赫玉欣, 张玉清. 热塑性淀粉/聚乙烯醇/蒙脱土三元纳米复合材料[J]. 应用化学,
2011, 28(7): 764-769.
doi:
10.3724/SP.J.1095.2011.00530
Citation: HE Yuxin, ZHANG Yuqing. Thermoplastic Starch/Polyvinyl Alcohol/Montmorillonite Nanocomposites[J]. Chinese Journal of Applied Chemistry, 2011, 28(7): 764-769. doi: 10.3724/SP.J.1095.2011.00530
Citation: HE Yuxin, ZHANG Yuqing. Thermoplastic Starch/Polyvinyl Alcohol/Montmorillonite Nanocomposites[J]. Chinese Journal of Applied Chemistry, 2011, 28(7): 764-769. doi: 10.3724/SP.J.1095.2011.00530
热塑性淀粉/聚乙烯醇/蒙脱土三元纳米复合材料
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。
English
Thermoplastic Starch/Polyvinyl Alcohol/Montmorillonite Nanocomposites
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.
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Key words:
- thermoplastic starch
- / nanocomposite
- / montmorillonite
- / polyvinyl alcohol
- / exfolated
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