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Synthesis of isosorbide-based polycarbonates via melt polycondensation catalyzed by quaternary ammonium ionic liquids
Sun, Wei1,2; Xu, Fei2; Cheng, Weiguo2; Sun, Jian2; Ning, Guoqing1; Zhang, Suojiang2

A series of quaternary aMmonium ionic liquids(ILs) were synthesized and employed as catalysts for the production of poly(isosorbide carbonate) (PIC) from diphenyl carbonate and isosorbide via a melt polycondensation process. The relationship between the anions of the ILs and the catalytic activities was investigated, and the readily-prepared IL tetraethylammonium imidazolate (TEA!) was found to exhibit the highest catalytic activity. After optimizing the reaction conditions, a PIC with a weight-average molecular weight (M-w) of 25600 g/mol was obtained, in conjunction with an isosorbide conversion of 92%. As a means of modifying the molecular flexibility and thermal properties of the PIC, poly(aliphatic diol-co-isosorbide carbonate)s (PAIC)s were successfully synthesized, again using TEAI, and polymers with Mw values ranging from 29000 to 112000 g/mol were obtained. C-13 NMR analyses determined that the PAIC specimens had random microstructures, while differential scanning calorimetry demonstrated that each of the PAICs were amorphous and had glass transition temperatures ranging from 50 to 115 degrees C. Thermogravimetric analyses found Td-s% values ranging from 316 to 332 degrees C for these polymers. Based on these data, it is evident that the incorporation of linear or cyclohexane-based diol repeating units changed the thermal properties of the PIC. (C) 2017, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.

KeywordQuaternary Ammonium Ionic Liquid Catalyst Isosorbide Polycarbonate Melt Polycondensation Aliphatic Diol
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
Indexed BySCI
WOS KeywordSolid-state Polymerization ; Weight Aliphatic Polycarbonates ; Renewable Resources ; Dimethyl Carbonate ; Sugar Diols ; Polymers ; Copolycarbonates ; Acid ; Dioxide ; 1,4/3,6-dianhydro-d-glucitol
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
Funding OrganizationNational Key Projects for Fundamental Research and Development of China(2016YFB0600903) ; National Natural Science Foundation of China(91434107 ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences(QYZDY-SSW-JSC011) ; 21506226 ; 21476245)
WOS IDWOS:000402346400016
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Document Type期刊论文
Affiliation1.China Univ Petr, Coll Chem & Chem Engn, Beijing 102249, 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
Recommended Citation
GB/T 7714
Sun, Wei,Xu, Fei,Cheng, Weiguo,et al. Synthesis of isosorbide-based polycarbonates via melt polycondensation catalyzed by quaternary ammonium ionic liquids[J]. CHINESE JOURNAL OF CATALYSIS,2017,38(5):908-917.
APA Sun, Wei,Xu, Fei,Cheng, Weiguo,Sun, Jian,Ning, Guoqing,&Zhang, Suojiang.(2017).Synthesis of isosorbide-based polycarbonates via melt polycondensation catalyzed by quaternary ammonium ionic liquids.CHINESE JOURNAL OF CATALYSIS,38(5),908-917.
MLA Sun, Wei,et al."Synthesis of isosorbide-based polycarbonates via melt polycondensation catalyzed by quaternary ammonium ionic liquids".CHINESE JOURNAL OF CATALYSIS 38.5(2017):908-917.
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