Climate Change Data Portal
DOI | 10.1039/c9gc01500k |
Synthesis of high-molecular weight isosorbide-based polycarbonates through efficient activation of endo-hydroxyl groups by an ionic liquid | |
Zhang, Zhencai1,2; Xu, Fei2,3; He, Hongyan2; Ding, Weilu2; Fang, Wenjuan2; Sun, Wei2; Li, Zengxi1,2; Zhang, Suojiang1 | |
发表日期 | 2019 |
ISSN | 1463-9262 |
EISSN | 1463-9270 |
卷号 | 21期号:14页码:3891-3901 |
英文摘要 | The utilization of renewable resources and carbon dioxide (CO2) has attracted extensive attention due to global warming and continuously declining petroleum-based resources. Herein, a novel synthetic approach of bio-based polycarbonates using isosorbide (ISB) and diphenyl carbonate (DPC), derived from the renewable resources glucose and CO2, respectively, was proposed, where an ionic liquid (IL) was used as a promising green catalyst; to overcome the poor activity of the endo-hydroxyl group (endo-OH) of ISB and achieve high-molecular weight polycarbonates, a new strategy was revealed that involved the activation of the endo-OH group via a series of efficient tetrabutylphosphonium-based IL catalysts. By designing the structures of cations and anions, most of the endo-OH groups have been activated and incorporated into the polymer chain, and the ratio of endo-OH/exo-OH at the end group of the polymer chain has been decreased to 0.25, which, to the best of our knowledge, is the lowest value reported to date. Among the prepared ILs, tetrabutylphosphonium acetate in a trace amount (1.5 x 10(-6) mol) exhibited highest catalytic performance, and poly(isosorbide carbonates) (PICs) with the molecular weight of up to 66 900 g mol(-1), T-g of 169 degrees C and better thermal stability than conventional polycarbonates were achieved. Mass spectrometry and density functional theory calculations provided a deeper understanding of the underlying cation-anion synergistic catalytic mechanism. Furthermore, copolymerization of ISB, diols and DPC was performed to modify the flexibility of PIC, resulting in copolycarbonates with the high molecular weight of 110 000 using 1,10-decanediol as a copolymer monomer. |
WOS研究方向 | Chemistry ; Science & Technology - Other Topics |
来源期刊 | GREEN CHEMISTRY
![]() |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/100658 |
作者单位 | 1.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China; 2.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst, Key Lab Green Proc & Engn,Inst Proc Engn, Beijing 100190, Peoples R China; 3.Zhongke Langfang Inst Proc Engn, Langfang 065000, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Zhencai,Xu, Fei,He, Hongyan,et al. Synthesis of high-molecular weight isosorbide-based polycarbonates through efficient activation of endo-hydroxyl groups by an ionic liquid[J],2019,21(14):3891-3901. |
APA | Zhang, Zhencai.,Xu, Fei.,He, Hongyan.,Ding, Weilu.,Fang, Wenjuan.,...&Zhang, Suojiang.(2019).Synthesis of high-molecular weight isosorbide-based polycarbonates through efficient activation of endo-hydroxyl groups by an ionic liquid.GREEN CHEMISTRY,21(14),3891-3901. |
MLA | Zhang, Zhencai,et al."Synthesis of high-molecular weight isosorbide-based polycarbonates through efficient activation of endo-hydroxyl groups by an ionic liquid".GREEN CHEMISTRY 21.14(2019):3891-3901. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。