摘要
本实验研究了聚苯乙烯-丁二烯二嵌段共聚物经辐照后动态力学特性的变化特征.参照以前有关SB辐照效应的正电子湮灭寿命谱和傅立叶红外光谱分析结果,从微观角度解释了辐照前后的SB玻璃化转变温度、低温力学特性及储能模量等物理特性变化的机理.
Dynamic mechanical properties of irradiated and un-irradiated SB were studied.Comparing the previous PALS results and FT-IR results,it deduced that there is a correlation between microstructure change and macro mechanical change of irradiated and un-irradiated polystyrene-block-butadiene.The critical irradiation dose is 500kGy,which cause a sharp fall of mechanical properties of SB,that is related to the abrupt change of microstructure of irradiated SB.
出处
《伊犁师范学院学报(自然科学版)》
2007年第4期24-27,共4页
Journal of Yili Normal University:Natural Science Edition
基金
新疆维吾尔自治区高等学校科学研究计划(批准号:XJEDU2005127)
伊犁师范学院院系配套基金的支持
关键词
嵌段共聚物
Γ辐照
热动态力学性能
Block co-polymer
γ-irradiation
Thermal dynamic mechanical properties