Synthesis of four-armed poly(epsilon-caprolactone)-block-poly(ethylene oxide) by diethylzinc catalyst
文献类型：期刊论文
| 作者 | Deng MX ; Chen XS ; Piao LH ; Zhang XF ; Dai ZL ; Jing XB |
| 刊名 | journal of polymer science part a-polymer chemistry
 |
| 出版日期 | 2004 |
| 卷号 | 42期号:4页码:950-959 |
| 关键词 | BLOCK-COPOLYMERS DEGRADATION POLYMERIZATION POLYMERS BEHAVIOR WATER ACID) |
| ISSN号 | 0887-624x |
| 通讯作者 | chen xs |
| 中文摘要 | biodegradable, amphiphilic, four-armed poly(epsilon-caprolactone)-block-poly(ethylene oxide) (pcl-b-peo) copolymers were synthesized by ring-opening polymerization of ethylene oxide in the presence of four-armed poly(epsilon-caprolactone) (pcl) with terminal oh groups with diethylzinc (znet2) as a catalyst. the chemical structure of pcl-b-peo copolymer was confirmed by h-1 nmr and c-13 nmr. the hydroxyl end groups of the four-armed pc l were successfully substituted by peo blocks in the copolymer. the monomodal profile of molecular weight distribution by gel permeation chromatography provided further evidence for the four-armed architecture of the copolymer. physicochemical properties of the four-armed block copolymers differed from their starting four-armed pcl precursor. the melting points were between those of pcl precursor and linear poly(ethylene glycol). the length of the outer peo blocks exhibited an obvious effect on the crystallizability of the block copolymer. the degree of swelling of the four-armed block copolymer increased with peo length and peo content. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000188591600015 |
| 公开日期 | 2010-08-17 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/15471]  |
| 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 | Deng MX,Chen XS,Piao LH,et al. Synthesis of four-armed poly(epsilon-caprolactone)-block-poly(ethylene oxide) by diethylzinc catalyst[J]. journal of polymer science part a-polymer chemistry,2004,42(4):950-959. |
| APA | Deng MX,Chen XS,Piao LH,Zhang XF,Dai ZL,&Jing XB.(2004).Synthesis of four-armed poly(epsilon-caprolactone)-block-poly(ethylene oxide) by diethylzinc catalyst.journal of polymer science part a-polymer chemistry,42(4),950-959. |
| MLA | Deng MX,et al."Synthesis of four-armed poly(epsilon-caprolactone)-block-poly(ethylene oxide) by diethylzinc catalyst".journal of polymer science part a-polymer chemistry 42.4(2004):950-959. |
入库方式： OAI收割
来源：长春应用化学研究所
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