| 학회 |
한국고분자학회 |
| 학술대회 |
2009년 가을 (10/08 ~ 10/09, 광주과학기술원 오룡관) |
| 권호 |
34권 2호 |
| 발표분야 |
고분자 합성 |
| 제목 |
Ionic liquids and Cellulose Chemistry- opportunities and limitations |
| 초록 |
Ionic liquids (IL), particularly 1,3-dialkylimidazolium halides, carboxylates and others, can dissolve cellulose. They are not sensitive to oxidation and do not require additional inorganic salts or other components to impart stability to the solvent and solubility to cellulose. The presentation deals with cellulose esters, acetals, silyl ethers, stability (hydrolytic degradation) of cellulose in ionic liquids and regeneration of IL. Direct acetylation to a degree of substitution of 2.5 as used for commercial cellulose acetate gives acetone soluble material ready for fibre spinning. Controlled trimethylsilyl or thexyldimethyl silylation and desilylation of silylated cellulose can be achieved. Reaction of cellulose with vinyl ethers in IL results in formation of acetals. These are stable solids, the solubility of which depends on the degree of substitution. They can be cross-linked thermally or with acid catalysis. Thermal (hydrolytic) stability of cellulose during dissolution and regeneration (purification) of IL will also be discussed. |
| 저자 |
Werner Mormann1, Markus Wezstein2, Wei Leng3
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| 소속 |
1Universitt Siegen, 2FB 8 Laboratorium fr Makromolekulare Chemie, 3Adolf-Reichwein-Straße 2 |
| 키워드 |
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| E-Mail |
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