摘要
用差示扫描量热法（ＤＳＣ），小角Ｘ－射线散射（ＳＡＸＳ），广角Ｘ－射线衍射（ＷＡＸＤ）等考察了辐照聚乙烯的熔融和重结晶。辐照破坏了聚乙烯结晶结构，使其熔融温度、结晶度均随辐照剂量的增加而降低。将辐照聚乙烯熔融再结晶，其重结晶度、熔融温度随辐照剂量而下降的幅度较大。其原因被归结为片晶劈裂。
The behaviour of melting and recrystallization of irradiated polyethylene has beeninvestigated by using differential scanning calorimetry(DSC),small angle X-ray scattering(SAXS)and wide angle X-ray diffraction(WAXD)techniqties.It is indicated that the crys-talline structure of polyethylene was damaged and both apparent heat of fusion and crys-tallinity redticed with increasing radiation dose. After the irradiated polyethylene was meltedand then recrystallized,the recrystallinity and melting temperature decreased with radiationdose.
出处
《应用化学》
CAS
CSCD
北大核心
1995年第6期17-20,共4页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金资助课题
关键词
聚乙烯
辐照效应
X-射线衍射
结晶
熔融
polyethylene,irradiation effect,differential scanning calorimetry,small angleX-ray scattering,wide angle X-ray diffraction
