Dissolution of chitin in aqueous KOH
文献类型：期刊论文
| 作者 | Gong, Pei1,2; Wang, Jian1,2; Liu, Biaolan1,2; Ru, Geying1; Feng, Jiwen1 |
| 刊名 | CELLULOSE
 |
| 出版日期 | 2016-06-01 |
| 卷号 | 23期号:3页码:1705-1711 |
| 关键词 | Chitin dissolution KOH aqueous solution Low temperature NMR |
| 英文摘要 | Our NMR experiments show that chitin can dissolve well in aqueous KOH through a freeze-thawing process, and the dissolution power of the alkali solvent systems is in the order of KOH > NaOH > LiOH aqueous solution, which is totally contrary to that of cellulose in the alkali aqueous solution (i.e., LiOH > NaOH a parts per thousand << KOH). In this work, we systematically study the dissolution process in KOH and KOH/urea aqueous solutions. Chitin has good solubility (solubility similar to 80 %) in 8.4-25 wt% KOH aqueous solution at -30 A degrees C. The role of urea also has been investigated: unlike aqueous chitin-NaOH solutions, urea indeed enhances the solubility of chitin in KOH aqueous solutions, but the increased degree becomes unobtrusive with decreasing temperature and increasing dissolution time; the DA decline curves of chitin-KOH and chitin-KOH/urea aqueous solutions are nearly overlapping, indicating that the effect of the urea on the degree of acetylation of chitin in KOH aqueous solutions is small, similar to the NaOH/urea solvent. |
| WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
| 类目[WOS] | Materials Science, Paper & Wood ; Materials Science, Textiles ; Polymer Science |
| 研究领域[WOS] | Materials Science ; Polymer Science |
| 关键词[WOS] | ALKALI SOLUTIONS ; CHITOSAN ; CELLULOSE ; DEACETYLATION ; SOLUBILITY ; SYSTEM ; NMR ; ACETYLATION ; HYDROLYSIS ; CHLORIDE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000376086900017 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/9359]  |
| 专题 | 武汉物理与数学研究所_磁共振基础研究部 |
| 作者单位 | 1.Chinese Acad Sci, Wuhan Inst Phys & Math, Natl Ctr Magnet Resonance Wuhan, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gong, Pei,Wang, Jian,Liu, Biaolan,et al. Dissolution of chitin in aqueous KOH[J]. CELLULOSE,2016,23(3):1705-1711. |
| APA | Gong, Pei,Wang, Jian,Liu, Biaolan,Ru, Geying,&Feng, Jiwen.(2016).Dissolution of chitin in aqueous KOH.CELLULOSE,23(3),1705-1711. |
| MLA | Gong, Pei,et al."Dissolution of chitin in aqueous KOH".CELLULOSE 23.3(2016):1705-1711. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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