摘要
The effect of a new liquid crystalline copolymer(LCP-H2) on the crystallization structure of isotactic polypropylene(iPP) was investigated using wide-angle X-ray diffraction.The experimental results show that LCP-H2 of low mass fraction can induce β-form in iPP.The nucleating activity of LCP-H2 mainly depended on its content and crystallization temperature.The content of β-form(Kβ) increased with increasing the nucleator content and crystallization temperature,Kβ value reached a maximum value(35%) when the nucleator mass fraction was 0.8% and the crystallization temperature was 125 ℃.
The effect of a new liquid crystalline copolymer（LCP-H2） on the crystallization structure of isotaefie polypropylene（iPP） was investigated using wide-angle X-ray diffraction. The experimental results show that LCP-H2 of low mass fraction can induce β-form in iPP. The nucleating activity of LCP-H2 mainly depended on its content and crystallization temperature. The content of β-form （Kβ） increased with increasing the nucleator content and crystallization temperature, Kβ value reached a maximum value （35%） when the nucleator mass fraction was 0. 8% and the crystallization temperature was 125 ℃.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2009年第6期1253-1255,共3页
Chemical Journal of Chinese Universities
基金
教育部"新世纪优秀人才支持计划"项目(批准号:NCET-07-0160)
沈阳市自然科学基金(批准号:1081228-1-02)资助
关键词
聚丙烯
液晶共聚物
β晶成核剂
结晶结构
Polypropylene
Liquid-crystalline copolymer
β-Nucleator
Crystallization structure
