Synthesis and characterization of poly(ethylene terephthalate)/attapulgite nanocomposites
Synthesis and characterization of poly(ethylene terephthalate)/attapulgite nanocomposites
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DOI：
10.1002/app.25207
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发表时间：
2007-01
影响因子：
3
通讯作者：
Xuepei Yuan;Chuncheng Li;Guohu Guan;Xiaoqing Liu;Yaonan Xiao;D. Zhang
中科院分区：
文献类型：
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作者：
Xuepei Yuan;Chuncheng Li;Guohu Guan;Xiaoqing Liu;Yaonan Xiao;D. Zhang
以纤维状粘土凹凸棒石(AT)为原料，采用原位聚合法制备了聚对苯二甲酸乙二酯(PET)/AT纳米复合材料。采用十六烷基三苯基溴化膦和硅烷偶联剂(3-缩水甘油三甲氧基硅烷)对凹凸棒石进行改性，以增加粘土颗粒在聚合物基质中的分散性，增强粘土颗粒与聚合物基质之间的相互作用。对有机AT粒子进行了FTIR和TGA测试，考察了有机试剂的热稳定性和负载量。X射线衍射图和扫描电子显微镜照片表明，有机改性是在棒状晶体表面进行的，并没有改变硅酸盐的晶体结构。对于PET/AT纳米复合材料，透射电子显微镜显示纤维状粘土可以很好地分散在聚合物基质中，棒状晶体在纳米尺度范围内。棒状晶体直径约20 nm，长度接近500 nm。粘土粒子的加入可以提高PET的热稳定性和结晶速率。随着AT的加入，复合材料的弯曲弹性模量也显著提高。#2006威利期刊，Inc.应用理科杂志103：1279-1286,2007
A kind of clay with fibrous morphology, attapulgite (AT), was used to prepare poly (ethylene terephthalate) (PET)/AT nanocomposites via in situ polymerization. Attapulgite was modified with Hexadecyltriphenylphosphonium bromide and silane coupling agent (3-glycidoxypropltrimethoxysilane) to increase the dispersion of clay particles in polymer matrix and the interaction between clay particles and polymer matrix. FTIR and TGA test of the organic-AT particles investigated the thermal stability and the loading quantity of organic reagents. XRD patterns and SEM micrographs showed that the organic modification was processed on the surface of rod-like crystals and did not shift the crystal structure of silicate. For PET/AT nanocomposites, it was revealed in TEM that the fibrous clay can be well dispersed in polymer matrix with the rod-like crystals in the range of nanometer scale. The diameter of rod-like crystal is about 20 nm and the length is near to 500 nm. The addition of the clay particles can enhance the thermal stability and crystallization rate of PET. With the addition of AT in PET matrix, the flexural modulus of those composites was also increased markedly. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 1279–1286, 2007