化工进展2011，Vol.30Issue(5)：1045-1049,1096,6.
聚对苯二甲酸丁二醇酯/聚甲基丙烯酸甲酯季铵盐修饰蒙脱土纳米复合材料的制备与性能
Preparation and characterization of polybutylene terephthalate/polymethyl methacrylate ammonium salts modified montmorillonite nanocomposites
摘要
Abstract
Two polymethyl methacrylate ammonium salts (MAPS-B and MAPS-O ) were used to modify montmorillonite. Such thermally stable oligomerically modified montmorillonites were further melt-compounded with polybutylene terephthalate (PBT) at a high temperature and six kinds of nanocomposites (PBT/MAPS-B-1, PBT/MAPS-B-2, PBT/MAPS-B-3, PBT/MAPS-O-1, PBT/MAPSO-2 and PBT/MAPS-O-3 ) were obtained. The influence of the structure and content of oligomerically modified montmorillonite on the morphology and properties of the nanocomposites were evaluated.The results of X-ray diffraction ( XRD ) and transmission electrical microscopy ( TEM ) indicated that the PBT/MMT nanocomposites had intercalated structures. Increased clay loading was a disadvantage for clay dispersion in the polymer matrix. Thermogravimetric analysis (TGA) showed that thermal stabilities of the PBT/MAPS-B and PBT/MAPS-O nanocomposites were improved remarkably. The onset temperature of thermal degradation ( Toast ) of PBT/MAPS-O-2 was 20℃ higher than that of the pristine material. The thermal stability of the composites was influenced by the dispersity of clay.The poor dispersity with clay loading higher than 2％ resulted in decreased Tonset of PBT/MMT. The `effects of modified clays on the crystallization behavior of PBT were characterized by differential scanning calorimeter( DSC ). The results showed that the nanocomposites of polyester/MMT had higher crystallization rate and a little lower melting temperature than the pristine polyester. The crystallization rate increased with increasing MMT content.关键词
蒙脱土/低聚物季铵盐/纳米复合材料/聚对苯二甲酸丁二醇酯Key words
montmorillonite/ oligomeric ammonium salts/ nanocomposites/ polybutylene terephthalate分类
化学化工引用本文复制引用
黄晓玲,王晓丽,张兵兵,苏海全..聚对苯二甲酸丁二醇酯/聚甲基丙烯酸甲酯季铵盐修饰蒙脱土纳米复合材料的制备与性能[J].化工进展,2011,30(5):1045-1049,1096,6.基金项目
国家自然科学基金项目(50763004,50362002). （50763004,50362002）
