Effect of leaving group in dithiocarbamates on mediating melt radical reaction during preparing long chain branched polypropylene
文献类型：期刊论文
| 作者 | Xing HP ; Jiang ZW ; Zhang ZJ ; Qiu J ; Wang YH ; Ma L ; Tang T |
| 刊名 | polymer
 |
| 出版日期 | 2012 |
| 卷号 | 53期号:4页码:947-955 |
| 关键词 | POLYLACTIC ACID POLYMERIZATION POLYETHYLENE RHEOLOGY DEGRADATION CATALYST BEHAVIOR |
| ISSN号 | 0032-3861 |
| 通讯作者 | tang t |
| 中文摘要 | the effectiveness of dithiocarbamates in mediating melt radical reaction during preparing long chain branched polypropylene (lcb-pp) was studied. h-1 nmr, ftir, gpc-talls and rheological measurements were used to characterize the structure of the resultant lcb-pp. the results showed that adding dithiocarbamates could help forming more long chain branches on pp, and furthermore the chemical structure of the leaving group (r) of dithiocarbamates played a key role in adjusting melt reaction of pp in the presence of peroxide and multifunctional monomer. when the r formed a stable radical (compared to pp macroradicals) after leaving from the dithiocarbamate, such as allyl or benzyl radicals, the presence of dithiocarbamates could reduce the chain scission of pp due to the formation of dormant state species. in this case, the polymerization degree of grafted monomer was also reduced comparing with conventional radical polymerization under the same conditions. thus more multifunctional monomer could react with pp macroradical to form more branching points and then more uniformly distributed lcb structure on the pp backbone. the reaction mechanism was investigated through model reactions. (c) 2012 elsevier ltd. all rights reserved. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000300525000009 |
| 公开日期 | 2013-06-08 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/48315]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Xing HP,Jiang ZW,Zhang ZJ,et al. Effect of leaving group in dithiocarbamates on mediating melt radical reaction during preparing long chain branched polypropylene[J]. polymer,2012,53(4):947-955. |
| APA | Xing HP.,Jiang ZW.,Zhang ZJ.,Qiu J.,Wang YH.,...&Tang T.(2012).Effect of leaving group in dithiocarbamates on mediating melt radical reaction during preparing long chain branched polypropylene.polymer,53(4),947-955. |
| MLA | Xing HP,et al."Effect of leaving group in dithiocarbamates on mediating melt radical reaction during preparing long chain branched polypropylene".polymer 53.4(2012):947-955. |
入库方式： OAI收割
来源：长春应用化学研究所
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