【摘要】 利用光学显微镜、Ｘ射线衍射仪和示差扫描量热法研究了ＩＰＰ／ＰＢＴ共混物的形态结构。结果表明，在ＩＰＰ／ＰＢＴ共混物中，当ＰＢＴ含量少于２０％时，ＩＰＰ和ＰＢＴ各自以晶粒的形式均匀地分布，属于Ｓｔｅｉｎ等人所提出的第一种模式。而当ＰＢＴ含量大于２０％时，共混物出现相分离现象。ＰＢＴ的加入使ＩＰＰ的结晶度下降，晶粒尺寸增大，熔点变低。更多还原

【Abstract】 he morphological structure and thermal properties of IPP/PBT blend were investigated by using polarization microscope, Xray diffractometer and DSC in the present work. The results indicate that IPP and PBT uniformly distribute in their individual crystallites form in blend when the content of PBT component is less 20%. It belonged to the first type of crystalline model supposed by stein ect. However, the phase separation is appearred when the content of PBT is more than 20% in blend, and brought about the changes in physcial character of IPP: reduction in crystallinility and melting point; increment in the size of crystallites.更多还原