Controlling the evolution of polypropylene microstructure during melt free radical modification using zinc dithiocarbamate with different N-substituted groups
Controlling the evolution of polypropylene microstructure during melt free radical modification using zinc dithiocarbamate with different N-substituted groups
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使用不同N-取代基团的二硫代氨基甲酸锌熔体自由基改性过程中控制聚丙烯微观结构的演变
DOI:
10.1016/j.polymdegradstab.2010.12.010
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发表时间:
2011-04
影响因子:
5.9
通讯作者:
Liu, Feng
中科院分区:
文献类型:
--
作者:
Xing, Haiping;Tang, Tao;Wan, Dong;Wang, Lu;An, Yanjie;Jiang, Zhiwei;Zhang, Zhenjiang;Liu, Feng
The effects of zinc dithiocarbamates on degradation and branching of polypropylene (PP) were studied during melt radical modification using a tri-functional monomer (trimethylol propane triacrylate (TMPTA)). High-temperature size-exclusion chromatography (HT-SEC) coupled with differential refractive index detector (DRI), light scattering detector (LSD) and viscometer detector (VD) and rotational rheometry were used to analyse the microstructure of modified PP samples. The chemical structure of the N-substituted group showed an important influence in controlling the evolution of PP microstructure during melt radical reaction. The chain cleavage of PP was controlled in the presence of zinc N, N-dimethyldithiocarbamate (ZDMC), and a substantial long chain branched (LCB) fraction was formed. Without co-agent, the molecular weight of PP decreased measurably, and only a minor LCB fraction was formed. Importantly, considerable amounts of highly branched (microgel and hyperbranched) structures were formed in this case.
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影响因子:
2.3
作者:
T. Pakuła;S. Geyler;Thomas M. Edling;D. Boese
通讯作者:
T. Pakuła;S. Geyler;Thomas M. Edling;D. Boese
DOI:
10.1107/s0365110x65004619
发表时间:
1965-12
期刊:
Acta Crystallographica
影响因子:
--
作者:
M. Bonamico;G. Dessy;A. Mugnoli;A. Vaciago;L. Zambonelli
通讯作者:
M. Bonamico;G. Dessy;A. Mugnoli;A. Vaciago;L. Zambonelli
影响因子:
4.6
作者:
Li, Shuzhao;Xiao, Miaomiao;Zheng, Anna
通讯作者:
Zheng, Anna
影响因子:
3
作者:
K. Lederer;I. Beytollahi-Amtmann;J. Billiani
通讯作者:
K. Lederer;I. Beytollahi-Amtmann;J. Billiani
影响因子:
3
作者:
G. Crini;L. Janus;M. Morcellet;G. Torri;N. Morin
通讯作者:
G. Crini;L. Janus;M. Morcellet;G. Torri;N. Morin