摘要
Cellulose acetates with low degree of substituent(DS) were homogeneously synthesized in an ionic liquid,1-allyl-3-methyl-imidazolium chloride(AmimC1).Under mild reaction conditions,cellulose monoacetates(CMA) with the DS in a range from 0.34 to 1.60 were obtained.NMR analysis shows that the distribution of acetyl moieties among the three OH groups of anhydroglucose unit is C6■C3>C2 for the synthesized CMA.The water solubility measurement shows that the CMA samples with the DS ranging from 0.65 to 1.06 are readily dissolved in water.The relationship between the structure and water solubility of CMA was briefly discussed.
Cellulose acetates with low degree of substituent（DS） were homogeneously synthesized in an ionic liquid, 1-allyl-3-methyl-imidazolium chloride （AmimCl）. Under mild reaction conditions, cellulose monoacetates（CMA） with the DS in a range from 0. 34 to 1.60 were obtained. NMR analysis shows that the distribution of acetyl moieties among the three OH groups of anhydroglucose unit is C6〉〉C3 〉 C2 for the synthesized CMA. The water solubility measurement shows that the CMA samples with the DS ranging from 0. 65 to 1.06 are readily dissolved in water. The relationship between the structure and water solubility of CMA was briefly discussed.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2008年第10期2115-2117,共3页
Chemical Journal of Chinese Universities
基金
国家“九七三”计划(批准号:2004CB719701)资助
关键词
醋酸纤维素
低取代度
均相乙酰化
取代基分布
水溶性
Cellulose acetate
Low degree of substituent
Homogeneous acetylation
Distribution of substituent
Water solubility
