[1]俞　强,龚方红,刘建忠,等.间规立构聚丙烯非等温结晶行为研究[J].常州大学学报(自然科学版),2001,(01):10-13.
　YU Qiang,GONG Fang -hong,LIU Jian -zhong,et al.Nonisothermal Crystallization Behavior of Syndiotactic Polypropylene[J].Journal of Changzhou University(Natural Science Edition),2001,(01):10-13.
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间规立构聚丙烯非等温结晶行为研究()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
期数:
2001年01期
页码:
10-13
栏目:
出版日期:
2001-03-25

文章信息/Info

Title:
Nonisothermal Crystallization Behavior of Syndiotactic Polypropylene
作者:
俞　强;  龚方红;  刘建忠;  林明德
江苏石油化工学院化学工程系, 江苏 常州 213016
Author(s):
YU Qiang ;  GONG Fang -hong ;  LIU Jian -zhong ;  LIN Ming -de
Department of Chemical Engineering , Jiangsu Insti tute of Pet rochemical Technology , Changzhou 213016 , China
关键词:
间规聚丙烯(sPP); 非等温结晶动力学; 示差扫描量热计; 结晶行为
Keywords:
syndio tactic poly propy lene ; nonisothermal cry stallization kinetics ; DSC ; crystallization behavior
分类号:
O 631 ;T Q 325
文献标志码:
A
摘要:
使用DSC 对间规立构聚丙烯(sPP) 和等规聚丙烯(iPP) 的非等温结晶行为进行了研究。发现间规聚丙烯具有与等规聚 丙烯不同的结晶结构。修正的Avrami 方程和Ozawa 方程对非等温结晶过程处理得到的结晶动力学参数表明:两种聚丙烯非等 温结晶过程中的成核和生长机理不同;由于立构规整性的差异, 间规聚丙烯的结晶速度明显低于等规聚丙烯。
Abstract:
Nonisothermal crystallization behavior of a syndiotactic poly propy lene sample and an isotatic polypropy lene counterpart w ere studied by differential scanning calorimet ry (DSC)at dif ferent scanning rates. It was found that the cry stalline structure of sPP was different f rom that of iPP .The kinetic parameters of cry stallizat ion , obtained from the corrected Avrami equation and Ozaw a equation for sPP and iPP samples crystallized nonisothermally at various cooling rates , suggested that there were different nucleat ion and grow th mechanisms existing betw een sPP and iPP samples .Because of the lower tactici ty of sPP molecular chains , it had a lower rate of crystallization and a much lower degree of crystallinity , compared w ith those of iPP .

参考文献/References:

[1] Miller R L, S eeley E G .Crystallization Kinetics of Syndiotactic Polypropylene [J] .J Polym Sci Polym Phys ED , 1982 , 20 :2 297 -2 307.
[2] Lovinger A J , Lot z B , Davi s D.Int erchain Packing and Unit Cell of S yndiotacti c Polypropylene [J] .Polymer , 1990 , 31 :2 253 -2 259.
[3] Lovinger A J , Lotz B, Davis D, et al.St ructure and Defect s in Fully Syndiotacti c Polypropylene [J] .Macromolecules , 1993 , 26 :3 494 -3 503.
[4] Lovinger A J , Davis D .Temperature Dependence of S t ructure and Morphology of Syndiotactic Polypropylene and Epit axial Relat ionship w ith Isotactic Polypropylene [J] .Macromolecules , 1991 , 24 :552 -560.
[5] Rodriguze -Arnold J , Zhang A, Cheng S Z D, et al.Crystallization , Melting and Morphology of Syndiotactic Polypropylene Fraction: 1 Thermodynamic Properties , Overall Crystallization ang Melting [J] .Polymer , 1994 , 35:1 884 -1 895.
[6] Lovinger A J , Lot z B, Davis D, et al.Morphology and Thermal Properties of Fully Syndiotactic Polypropylene [J] .Macromolecules , 1994 , 27 :6 603 -6 611 .
[7] Loos J , Buhk M , Pet ermann J .M orphological Studies on Syndiot act ic Polyp ropylene Prepared by Ansametallocenes [J] .Polymer , 1996 , 37 :387 -391.
[8] T homann R, Kressler J , Setz S , et al.Morphology and Phase Behavior of Blends of Syndiot act ic and Isot act ic Polypropylene :1 X - ray Scatt ering , Light Microscopy , Atomic Force Microscopy and Scanning Electron Microscopy [J] .Polymer , 37 :2 627 -2 633.
[9] Qui rk RP, Alsamarraie MAA .Polymer Handbook [M] .3rd . New York :Wiley , 1989.
[10] 于英宁, 张宏放, 莫志深.茂金属间规立构聚丙烯结晶动力学 研究[J] .高分子学报, 1999 (3):302 -308.

相似文献/References:

[1]俞　强,刘建忠,林明德,等.间规聚丙烯与等规聚丙烯共混物的结晶行为[J].常州大学学报(自然科学版),2000,(01):25.
　YU Qiang,LIU Jian -zhong,LIN Ming -de,et al.Crystallization Behavior of Blends of Syndiotacti c and Isotactic Polypropylene[J].Journal of Changzhou University(Natural Science Edition),2000,(01):25.

备注/Memo

备注/Memo:
基金项目:江苏石油化工学院科技基金资助(9801) 作者简介:俞强(1957 -), 男, 江苏南京人, 副教授, 主要从事聚合物改性方面研究。
更新日期/Last Update: 2001-03-25