CAJ | 학술논문

为了研究聚苯乙烯（PS）与聚乙二醇（PEG）不相容非晶／结晶共混体系的结晶行为，采用差示扫描量热仪（DSC）和 X 射线衍射仪（XRD）对此共混系统的体相结晶行为进行了表征．利用偏光显微镜（POM）观察了共混物薄膜的结晶形貌．DSC 结果表明：PS 含量的改变对PEG 结晶温度、熔融温度及结晶能力并无明显影响．XRD 观察 PEG 在19°和23°处有明显的衍射峰，且23°处的峰强度明显大于19°处的峰强度，而 PS 的加入使得两个峰强度接近．偏光显微镜观察发现 PS 并未改变 PEG 的球晶形貌，在 PEG 球晶中分散有明显的球形 PS 分散相区，说明 PS／PEG 共混物发生了明显的宏观相分离行为．
위료연구취분을희（PS）여취을이순（PEG）불상용비정／결정공혼체계적결정행위，채용차시소묘량열의（DSC）화 X 사선연사의（XRD）대차공혼계통적체상결정행위진행료표정．이용편광현미경（POM）관찰료공혼물박막적결정형모．DSC 결과표명：PS 함량적개변대PEG 결정온도、용융온도급결정능력병무명현영향．XRD 관찰 PEG 재19°화23°처유명현적연사봉，차23°처적봉강도명현대우19°처적봉강도，이 PS 적가입사득량개봉강도접근．편광현미경관찰발현 PS 병미개변 PEG 적구정형모，재 PEG 구정중분산유명현적구형 PS 분산상구，설명 PS／PEG 공혼물발생료명현적굉관상분리행위．
To investigate the crystallization behavior of immiscible non-crystalline/crystalline polystyrene (PS)/poly(ethylene glycol)(PEG)blend,the differential scanning calorimeter (DSC)and X-ray diffraction (XRD)were used to characterize the crystallization behavior in bulk,and the polarizing microscope(POM)was used to observe the crystallization morphology of the film.Based on the DSC results,the adding of PS had little effect on the crystallization,melting temperatures and crystallization ability.Two peaks at 19°and 23°were observed by XRD,and the intensity of the peak at 23°was larger than that at 19°,however,the two peaks had approximately intensities when the PS was added.The crystallization morphology of spherulite was observed in both of the neat PEG film and PEG/PS films, but a difference existed,i.e.,the PS dispersed phase (spherical dark domains)can be observed for the PS/PEG blends,which indicated that the macro phase separation behavior occurred in the blends.