Synthesis of Novel Hyperbranched Poly(ester-amide)s Based on Neutral alpha-Amino Acids via "AD plus CBB '" Couple-Monomer Approach
文献类型：期刊论文
| 作者 | Bao YM ; Liu XH ; Tang XL ; Li YS |
| 刊名 | journal of polymer science part a-polymer chemistry
 |
| 出版日期 | 2010 |
| 卷号 | 48期号:23页码:5364-5374 |
| 关键词 | BB'(2) TYPE MONOMERS THERMAL POLYMERIZATION CLICK CHEMISTRY L-LYSINE DIVINYL SULFONE L-ALANINE POLYMERS AMIDE)S POLYESTERS DEGRADATION |
| ISSN号 | 0887-624x |
| 通讯作者 | li ys |
| 中文摘要 | a series of novel hyperbranched poly(ester-amide)s (hbpeas) based on neutral a-amino acids have been synthesized via the "ad + cbb'" couple-monomer approach. the abb' intermediates were stoichiometrically formed through thio-michael addition reaction because of reactivity differences between functional groups. without any purification, in situ self-polycondensations of the intermediates at elevated temperature in the presence of a catalyst afforded hbpeas with multihydroxyl end groups. the degrees of branching (dbs) of the hbpeas were estimated to be 0.40-0.58 and 0.24-0.54 by quantitative c-13 nmr with two different calculation methods, respectively, depending on polymerization conditions and structure of monomers. the influences of catalyst, temperature, and intermediate structure on the polymerization process and molecular weights as well as properties of the resultant polymers were investigated. ftir, nmr, and dept-135 nmr analyses revealed the branched structure of the resultant polymers. the hbpeas possess moderately high molecular weights with broad distributions, glass transition temperatures in the range of -25.5 to 36.5 degrees c, and decomposition temperatures at 10% weight loss under nitrogen and air in the regions of 243.4-289.1 degrees c and 231.4-265.6 degrees c, respectively. among them, those derived from d, l-phenylalanine display the lowest degree of branching, whereas the highest glass transition temperature and the best thermal stability. (c) 2010 wiley periodicals, inc. j polym sci part a: polym chem 48: 5364-5374, 2010 |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000284225500012 |
| 公开日期 | 2012-04-25 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/43295]  |
| 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 | Bao YM,Liu XH,Tang XL,et al. Synthesis of Novel Hyperbranched Poly(ester-amide)s Based on Neutral alpha-Amino Acids via "AD plus CBB '" Couple-Monomer Approach[J]. journal of polymer science part a-polymer chemistry,2010,48(23):5364-5374. |
| APA | Bao YM,Liu XH,Tang XL,&Li YS.(2010).Synthesis of Novel Hyperbranched Poly(ester-amide)s Based on Neutral alpha-Amino Acids via "AD plus CBB '" Couple-Monomer Approach.journal of polymer science part a-polymer chemistry,48(23),5364-5374. |
| MLA | Bao YM,et al."Synthesis of Novel Hyperbranched Poly(ester-amide)s Based on Neutral alpha-Amino Acids via "AD plus CBB '" Couple-Monomer Approach".journal of polymer science part a-polymer chemistry 48.23(2010):5364-5374. |
入库方式： OAI收割
来源：长春应用化学研究所
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