Document Detail


Preparation of cellulose-graft-poly(ɛ-caprolactone) nanomicelles by homogeneous ROP in ionic liquid.
MedLine Citation:
PMID:  23218268     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Self-associating cellulose-graft-poly(ɛ-caprolactone) (cellulose-g-PCL) copolymers were successfully synthesized via homogeneous ring-opening polymerization (ROP) of ɛ-CL onto softwood dissolved pulp substrate in ionic liquid 1-N-butyl-3-methylimidazolium chloride ([Bmim]Cl). An organic catalyst N,N-dimethylamino-4-pyridine (DMAP) was compared with the traditional metal-based catalyst (Sn(Oct)(2)) as the catalyst of the reaction, and exhibited higher catalytic activity. By controlling the cellulose:ɛ-CL feed ratio and reaction temperature, the molecular architecture of the copolymers can be altered, as evidenced by FT-IR, (1)H NMR, (13)C NMR, TGA and XRD. The self-assembly behavior of the copolymers in water was investigated and characterized using fluorescence probe, dynamic light scattering (DLS) and SEM. The results showed that the cellulose-g-PCL copolymers could form nanosized micelles (approximately 20-100nm) in water, and the micelle size and critical micelle concentration (CMC) can be controlled by varying the grafting ratio of PCL. These cellulose-based nanomicelles are expected to be useful in broad application fields.
Authors:
Yanzhu Guo; Xiaohui Wang; Zuguang Shen; Xuancai Shu; Runcang Sun
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Publication Detail:
Type:  Journal Article     Date:  2012-10-02
Journal Detail:
Title:  Carbohydrate polymers     Volume:  92     ISSN:  1879-1344     ISO Abbreviation:  Carbohydr Polym     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2012-12-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8307156     Medline TA:  Carbohydr Polym     Country:  England    
Other Details:
Languages:  eng     Pagination:  77-83     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Affiliation:
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China.
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