STUDIES ON CRYSTALLINITY AND CRITICAL CRYSTALLINE SEQUENCE LENGTH OF ETHYLENE/a-OLEFIN COPOLYMERS
高分子学报1991年第3期 页码:322-328
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纸质出版日期:1991-6-20,
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李三喜, 莫志深, 张宏放, 庞德仁, 黄葆同, LI San-xi, MO Zhi-shen, ZHANG Hong-fang, PANG De-ren, HUANG Bao-tong. 乙烯-α-烯烃共聚物的结晶性能及其临界序列结晶长度的研究[J]. 高分子学报, 1991,(3):322-328.
LI San-xi, MO Zhi-shen, ZHANG Hong-fang, Pang De-ren, HUANG Bao-tong. STUDIES ON CRYSTALLINITY AND CRITICAL CRYSTALLINE SEQUENCE LENGTH OF ETHYLENE/a-OLEFIN COPOLYMERS[J]. Acta Polymerica Sinica, 1991,(3):322-328.
李三喜, 莫志深, 张宏放, 庞德仁, 黄葆同, LI San-xi, MO Zhi-shen, ZHANG Hong-fang, PANG De-ren, HUANG Bao-tong. 乙烯-α-烯烃共聚物的结晶性能及其临界序列结晶长度的研究[J]. 高分子学报, 1991,(3):322-328.DOI:
LI San-xi, MO Zhi-shen, ZHANG Hong-fang, Pang De-ren, HUANG Bao-tong. STUDIES ON CRYSTALLINITY AND CRITICAL CRYSTALLINE SEQUENCE LENGTH OF ETHYLENE/a-OLEFIN COPOLYMERS[J]. Acta Polymerica Sinica, 1991,(3):322-328.DOI:
which was prepared by copolymerization of ethylene and a-olefins with heterogeneous Ziegler-Natta catalyst made by chemical reaction
was studied by WAXD
DSC
and PLM methods.The results of WAXD showed that the crystallite size and degree of crystallinity decrease and the parameters of unit cell increase with increase content of a-olefin in copolymers. On the other hand
the crystallite size and degree of crystallinity of the copolymers after heat treatment obviously increase
while parameters of unit cell decrease. Both the critical crystalline sequence lengthes and the value of k obtained increase in the order of EPe