Crystallization kinetics and miscibility of iPP/PcBR blends
Isotactic polypropylene/poly(cis-butadiene) rubber (iPP/PcBR) blends were prepared by melt mixing. Non-isothermal crystallization and miscibility for neat iPP and blends of iPP/PcBR were investigated by differential scanning calorimetry (DSC). The presence of PcBR remarkably affected non-isothermal crystalline behaviors of iPP. Introduction of PcBR resulted in higher crystallization peak temperature and faster crystallization rate, which meaned a heterogeneous nucleation effect of PcBR upon crystallization of iPP. For the same sample, the crystallization peak temperature moved to lower temperature and the crystallization rate increased as the cooling rate increased. The glass transition temperature (Tg) of iPP, PcBR and blends was measured by DMA. Two peaks in DMA spectra, respectively corresponding to iPP rich phase and PcBR rich phase, approach each other with increasing PcBR content, indicating partial miscibility of two compositions.
SUN Hui YU Bin SHENG Jing
The Key Lab of Advanced Textile Material and Manufacturing Technology, Ministry of Education China,Z School of materials science and engineering, Tianjin University, Tianjin 300072, the People’s Republ
国际会议
2009 International Conference on Advanced Fibers and Polymer Materials(2009年先进纤维与聚合物材料国际学术会议)
上海
英文
481-483
2009-10-21（万方平台首次上网日期，不代表论文的发表时间）