An ionic liquid as reaction media for radiation-induced grafting of thermosensitive poly (N-isopropylacrylamide) onto microcrystalline cellulose
文献类型：期刊论文
| 作者 | Hao, Yan; Peng, Jing; Li, Jiuqiang; Zhai, Maolin; Wei, Genshuan |
| 刊名 | CARBOHYDRATE POLYMERS
 |
| 出版日期 | 2009-07-19 |
| 卷号 | 77期号:4页码:779-784 |
| 关键词 | Radiation-induced Grafting Ionic Liquids Homogeneous System Microcrystalline Cellulose N-isopropylacrylamide |
| ISSN号 | 0144-8617 |
| DOI | 10.1016/j.carbpol.2009.02.025 |
| 英文摘要 | This paper reports a homogeneous modification of microcrystalline cellulose (MCC) in ionic liquids via radiation-induced grafting. Thermosensitive poly (N-isopropylacrylamide) (PNIPAAm) was successfully grafted onto MCC in 1-butyl-3-methylimidazolium chloride ([Bmim]Cl) ionic liquid using gamma-ray irradiation technique at room temperature. The grafting yield (GY) increased with dose up to 40 kGy, while decreased slightly with dose rate from 22 to 102 Gy/min. The results of TGA indicated that cellulose grafted PNIPAAm (cellulose-g-PNIPAAm) had higher thermal stability than that of ungrafted regenerated cellulose (reg-cellulose). The crystalline structure of original MCC was largely destroyed during the dissolution process according to the XRD profiles, and grafting PNIPAAm onto cellulose further decreased the intensity of crystallinity. SEM showed that reg-cellulose and cellulose-g-PNIPAAm films displayed dense and homogeneous morphology. Moreover, the resulting cellulose-g-PNIPAAm exhibited obvious thermal sensitivity with a lower critical solution temperature around 35 degrees C, which was observed from the swelling behavior in water at different temperatures. (C) 2009 Elsevier Ltd. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000267188000013 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/66229]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Peng, Jing |
| 作者单位 | Peking Univ, Coll Chem & Mol Engn, Dept Appl Chem, BNLMS, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hao, Yan,Peng, Jing,Li, Jiuqiang,et al. An ionic liquid as reaction media for radiation-induced grafting of thermosensitive poly (N-isopropylacrylamide) onto microcrystalline cellulose[J]. CARBOHYDRATE POLYMERS,2009,77(4):779-784. |
| APA | Hao, Yan,Peng, Jing,Li, Jiuqiang,Zhai, Maolin,&Wei, Genshuan.(2009).An ionic liquid as reaction media for radiation-induced grafting of thermosensitive poly (N-isopropylacrylamide) onto microcrystalline cellulose.CARBOHYDRATE POLYMERS,77(4),779-784. |
| MLA | Hao, Yan,et al."An ionic liquid as reaction media for radiation-induced grafting of thermosensitive poly (N-isopropylacrylamide) onto microcrystalline cellulose".CARBOHYDRATE POLYMERS 77.4(2009):779-784. |
入库方式： OAI收割
来源：化学研究所
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