Synthesis and Characterization of Temperature-sensitive Cellulose-graft-Poly(N-isopropylacrylamide) Copolymers
文献类型：期刊论文
| 作者 | Yang, Li-li1,2; Zhang, Jin-ming1; He, Jia-song1; Zhang, Jun1; Gan, Zhi-hua3 |
| 刊名 | CHINESE JOURNAL OF POLYMER SCIENCE
 |
| 出版日期 | 2015-12-01 |
| 卷号 | 33期号:12页码:1640-1649 |
| 关键词 | Cellulose-g-PNIPAM ATRP Temperature-sensitive Water soluble |
| 英文摘要 | A new series of cellulose-graft-poly(N-isopropylacrylamide) (cellulose-g-PNIPAM) copolymers were prepared by atom transfer radical polymerization (ATRP) of N-isopropylacrylamide monomers from a cellulose-based macro-initiator, which was homogeneously synthesized in an ionic liquid 1-allyl-3-methylimidazolium chloride (AmimCl). The composition of cellulose-g-PNIPAM copolymers could be adjusted by altering the feeding ratio and reaction time. The resultant copolymers with relatively high content of PNIPAM segments (molar substitution of PNIPAM >= 18.3) were soluble in water at room temperature. Aqueous solutions of cellulose-g-PNIPAM copolymers exhibited clear temperature-sensitive behavior, and their sol-to-gel phase transition properties were investigated by dynamic light scattering (DLS) and UV measurements. Compared with pure PNIPAM, the cellulose-g-PNIPAM copolymers possessed higher lower critical solution temperatures (LCST) in a range from 36.9 degrees C to 40.8 degrees C, which are close to normal human body temperature, and could be tuned by adjusting the content of PNIPAM segments in copolymers. Spherical structure of cellulose-g-PNIPAM copolymers formed at temperatures above LCST and its morphology was observed by TEM and SEM. These novel cellulose-g-PNIPAM copolymers may be attractive substrates for some biomedical applications, such as drug release and tissue engineering. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2015-12-22 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/29160]  |
| 专题 | 化学研究所_工程塑料实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Beijing Univ Chem Technol, Coll Life Sci & Technol, State Key Lab Organ Inorgan Composites, Beijing Lab Biomat, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Li-li,Zhang, Jin-ming,He, Jia-song,et al. Synthesis and Characterization of Temperature-sensitive Cellulose-graft-Poly(N-isopropylacrylamide) Copolymers[J]. CHINESE JOURNAL OF POLYMER SCIENCE,2015,33(12):1640-1649. |
| APA | Yang, Li-li,Zhang, Jin-ming,He, Jia-song,Zhang, Jun,&Gan, Zhi-hua.(2015).Synthesis and Characterization of Temperature-sensitive Cellulose-graft-Poly(N-isopropylacrylamide) Copolymers.CHINESE JOURNAL OF POLYMER SCIENCE,33(12),1640-1649. |
| MLA | Yang, Li-li,et al."Synthesis and Characterization of Temperature-sensitive Cellulose-graft-Poly(N-isopropylacrylamide) Copolymers".CHINESE JOURNAL OF POLYMER SCIENCE 33.12(2015):1640-1649. |
入库方式： OAI收割
来源：化学研究所
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