Controllable synthesis of a narrow polydispersity CO2-based oligo(carbonate-ether) tetraol
文献类型：期刊论文
| 作者 | Liu,Shunjie; Miao,Yuyang; Qiao,Lijun; Qin,Yusheng; Wang,Xianhong; Chen,Xuesi; Wang,Fosong |
| 刊名 | polymer chemistry
 |
| 出版日期 | 2015 |
| 卷号 | 6期号:43页码:7580-7585 |
| 关键词 | CO2/PROPYLENE OXIDE COPOLYMERIZATION MOLECULAR-WEIGHT CARBON-DIOXIDE POLYMERIZATION EPOXIDE |
| 通讯作者 | qin,ys |
| 英文摘要 | a co2-based oligo(carbonate-ether) tetraol was synthesized in a controlled manner by immortal copolymerization of carbon dioxide (co2) and propylene oxide (po) in the presence of 1,2,4,5-benzenetetracarboxylic acid (btch(4)) catalyzed by using a zinc-cobalt double metal cyanide (zn-co-dmc) catalyst. the number average molecular weight (m-n) of the tetraol was in a good linear relationship with the molar ratio of po and btch4 (po/btch(4)), and hence can be precisely controlled. besides, the rapid chain transfer in immortal copolymerization afforded the tetraol with a narrow polydispersity index (pdi) of 1.08 at a mn of 1400 g mol(-1). notably, the weight fraction of the byproduct propylene carbonate (w-pc) was reduced to as low as 4.0 wt%, which is the lowest w-pc ever reported for the synthesis of branched polyols. the structure of the oligo(carbonate-ether) tetraol was confirmed, providing new evidence for the effect of the acidity (pk(a1) value) of the chain transfer agent (cta) on the initial catalytic mechanism. the acid only acts as the cta directly participating in the copolymerization via the chain transfer reaction when its pk(a1) value is higher than that of adipic acid (pk(a1) = 4.43). however, when its pk(a1) value is lower than that of succinic acid (pk(a1) = 4.2), it acts as the initiate-transfer agent, which first initiates po homopolymerization to an oligo-ether polyol, and then the in situ formed polyol acts as a new cta for the copolymerization. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000364087500011 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/64865]  |
| 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 | Liu,Shunjie,Miao,Yuyang,Qiao,Lijun,et al. Controllable synthesis of a narrow polydispersity CO2-based oligo(carbonate-ether) tetraol[J]. polymer chemistry,2015,6(43):7580-7585. |
| APA | Liu,Shunjie.,Miao,Yuyang.,Qiao,Lijun.,Qin,Yusheng.,Wang,Xianhong.,...&Wang,Fosong.(2015).Controllable synthesis of a narrow polydispersity CO2-based oligo(carbonate-ether) tetraol.polymer chemistry,6(43),7580-7585. |
| MLA | Liu,Shunjie,et al."Controllable synthesis of a narrow polydispersity CO2-based oligo(carbonate-ether) tetraol".polymer chemistry 6.43(2015):7580-7585. |
入库方式： OAI收割
来源：长春应用化学研究所
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