详细信息
文献类型:期刊文献
中文题名:醋酸丙酸纤维素的合成及结构研究
英文题名:Study on Synthesis and Structure of Cellulose Acetate Propionate
作者:段丽艳[1,2] 金立维[1,2] 曹珍艳[1,2] 许玉芝[1,2] 王春鹏[1,2] 储富祥[1,2]
第一作者:段丽艳
机构:[1]中国林业科学研究院林产化学工业研究所;[2]国家林业局林产化学工程重点开放性实验室
年份:2008
卷号:28
期号:5
起止页码:11-15
中文期刊名:林产化学与工业
外文期刊名:Chemistry and Industry of Forest Products
收录:CSTPCD;;Scopus;CSCD:【CSCD_E2011_2012】;
基金:国家林业局948创新项目(2006-4-C03);国家863计划(2007AA100704);中央级公益性科研院所基本科研业务费专项资金项目(CAFYBB2007019;CAFINT2007C004)
语种:中文
中文关键词:醋酸丙酸纤维素;^13C;NMR;X射线
外文关键词:cellulose acetate propionate ; ^13C NMR; X-ray
分类号:TQ352
摘要:采用非均相催化酯化法合成了醋酸丙酸纤维素(CAP),对合成的CAP的^13C NMR图谱进行了分析,分别得出了CAP的乙酰基和丙酰基的取代度,并与化学滴定方法进行了对比。采用IR、凝胶渗透色谱(GPC)、X射线衍射和差示扫描量热法(DSC)等检测手段对产物的结构和性能进行了表征。结果表明,与纤维素相比,所合成的CAP的晶型发生了明显的变化,结晶度从68%降到了30%-40%,玻璃化转变温度为150℃左右。纤维素的酯化使其具有改善的塑化性能。
Cellulose acetate propionate (CAP) was synthesized through heterogeneous esterification of cellulose. The substituting degree of CAP was determined by ^13C NMR and chemical titration. The structure and properties of CAP were investigated by IR, gel permeation chromatography ( GPC), X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The results showed that the crystallinity of CAP was decreased from 68 % to 30 %-40 %, and the glass transition temperature was about 150℃. The plasticizing properties after esterifieation have been improved.
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