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Cellulose Dissolution and InSitu Grafting in a Reversible System using an Organocatalyst and Carbon Dioxide
Song, Longchu1,2; Yang, Yunlong1,2; Xie, Haibo2,3; Liu, Enhui1
KeywordCarbon Dioxide Celluloses Organocatalysis Ring-opening Polymerization Sustainable Chemistry
Source PublicationCHEMSUSCHEM
2015-10-12
DOI10.1002/cssc.201500378
Volume8Issue:19Pages:3217-3221
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordRING-OPENING POLYMERIZATION ; IONIC LIQUIDS ; RADICAL POLYMERIZATION ; COPOLYMERS ; NANOMICELLES ; SURFACTANTS ; LACTIDE ; CO2
AbstractCellulose is a promising renewable material, but cannot easily be processed homogeneously owing to the stiffness of the molecules and the dense packing of its chains, due to intermolecular hydrogen bonds. Cellulose processability can be improved by chemical modification. The reversible reaction of cellulose with carbon dioxide in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) allows dissolution of cellulose in dimethyl sulfoxide (DMSO). This DMSO solution is an effective medium for grafting l-lactide (LLA) from cellulose by ring-opening polymerization (ROP) under mild conditions, allowing to prepare cellulose-graft-poly(l-lactide) co-polymers with a molar substitution (MSPLLA) of poly(l-lactide) in the range of 0.37-5.32, at 80 degrees C. This makes DBU not only an important reagent to achieve cellulose dissolution, but it also acts as organocatalyst for the subsequent ring-opening polymerization process. Characterization of the structure and thermal properties of the co-polymers by a variety of techniques reveals that they have a single glass-transition temperature (T-g), which decreases with increasing MSPLLA. Thus, the modification results in a transformation of the originally semirigid cellulose into a thermoplastic material with tunable T-g. The carbon dioxide dissolution strategy is an efficient platform for cellulose derivatization by homogeneous organocatalysis.
Language英语
WOS IDWOS:000362729800005
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/146596
Collection中国科学院大连化学物理研究所
Affiliation1.Xiangtan Univ, Coll Chem, Minist Educ, Key Lab Environm Friendly Chem & Applicat, Xiangtan, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
3.Guizhou Univ, Dept Polymer Mat & Engn, Coll Mat & Met, Guiyang 550025, Peoples R China
Recommended Citation
GB/T 7714
Song, Longchu,Yang, Yunlong,Xie, Haibo,et al. Cellulose Dissolution and InSitu Grafting in a Reversible System using an Organocatalyst and Carbon Dioxide[J]. CHEMSUSCHEM,2015,8(19):3217-3221.
APA Song, Longchu,Yang, Yunlong,Xie, Haibo,&Liu, Enhui.(2015).Cellulose Dissolution and InSitu Grafting in a Reversible System using an Organocatalyst and Carbon Dioxide.CHEMSUSCHEM,8(19),3217-3221.
MLA Song, Longchu,et al."Cellulose Dissolution and InSitu Grafting in a Reversible System using an Organocatalyst and Carbon Dioxide".CHEMSUSCHEM 8.19(2015):3217-3221.
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