Study of the morphological and thermal properties of polystyrene nanocomposites based on modified halloysite nanotubes with styrene-maleic anhydride copolymers
Study of the morphological and thermal properties of polystyrene nanocomposites based on modified halloysite nanotubes with styrene-maleic anhydride copolymers
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DOI：
10.1016/j.mtcomm.2017.10.011
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发表时间：
2017-12-01
影响因子：
3.8
通讯作者：
Uyanik, Nurseli
中科院分区：
文献类型：
--
作者：
Arat, Refik;Uyanik, Nurseli
本研究采用熔融共混法制备聚苯乙烯/埃洛石纳米管（PS/HNTs）纳米复合材料，以取代HNTs存在下苯乙烯单体的原位本体聚合。采用苯乙烯-马来酸酐共聚物（SMA）对HNTs进行表面改性，以改善HNTs在PS基体中的分散性和相容性。在双螺杆微混炼机中制备了PS/HNTs纳米复合材料，其中PS/HNTs的质量分数分别为5、10和15纳米粘土。通过XRD、SEM、DSC、TGA和拉伸试验研究了HNTs表面改性对复合材料性能的影响。SEM图像显示，与原始HNTs相比，改性HNTs样品均匀地分布在PS基质中。复合材料的热稳定性也随着改性HNTs含量的增加而提高。因此，表面改性提高了HNTs在熔融共混法制备的PS纳米复合材料中的分散性。
In this study, the melt blending method was used to prepare the polystyrene/halloysite nanotubes (PS/HNTs) nanocomposites instead of in-situ bulk polymerization of styrene monomer in the presence of HNTs. Surface modification of HNTs with styrene-maleic anhydride copolymers (SMA) was performed in THF medium to improve the HNTs distribution and compatibility in the PS matrix. PS/HNTs nanocomposites were prepared in a twin-screw micro compounder containing 5, 10, and 15 wt.% of nanoclays. The influences of the surface modification of HNTs on the properties of the nanocomposites were studied by XRD, SEM, DSC, TGA, and tensile test. The SEM images showed that the modified HNTs samples were uniformly distributed in the PS matrix compared to the pristine HNTs. The thermal stability of nanocomposites was also improved by increasing of modified HNTs content. Consequently, the surface modification increased the dispersion of HNTs in the PS nanocomposites prepared by melt blending method.