PREFERENTIAL INTERCALATION BEHAVIOR OF CLAY AND ITS EFFECT ON THE THERMAL DEGRADATION IN IMMISCIBLE PP/PS BLENDS |
| |
Authors: | Yan Zhu Hai-yun Ma Li-fang Tong Zheng-ping Fang |
| |
Affiliation: | Institute of Polymer Composites, Zhejiang University, Key Laboratory of Macromolecular Synthesis and Functionalization, Ministry of Education, Hangzhou 310027, China Department of Biochemical and Chemical Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo 315100, China |
| |
Abstract: | The typical immiscible PP/PS blend based clay nanocomposites were prepared via melt blending.The dispersion of clay was determined by X-ray diffraction (XRD) and transmission electron microscopy (TEM).Thermal stability and dynamic mechanical properties were measured by thermogravimetrical analysis (TGA) and dynamic mechanical analysis (DMA),respectively.Preferential intercalation behavior of clay in PP/PS blends was found.The dispersion of clay is significantly influenced by the polarity of PP and PS,meanwhile the location of clay can be controlled by the alternation of the polarity of PP and PS through chemical modification.The clay migrates from PS phase to PP phase with the improvement of the polarity of PP.However,when the PS is sulfonated,clay migrates back to the dispersed PS phase again.The dispersion and location of clay have profound influence on the thermal and dynamic mechanical behavior of PP/PS blends.The better the dispersion of clay in either continuous phase or disperse phase,the higher the thermal stability of the blends.Besides,samples with clay located in the continuous phase can display the best strengthening effect. |
| |
Keywords: | Clay Nanocomposites Poly(propylene) Polystyrene |
本文献已被 CNKI 维普 万方数据 等数据库收录! |
| 点击此处可从《高分子科学》浏览原始摘要信息 |
|
点击此处可从《高分子科学》下载全文 |
|