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Laser Light Scattering Study on Aggregation of Cellulose Diacetate in Acetone
Ding-hai Xie1, Xu-hua Li1, Xi-ling Fang1, Chun-feng Ma*2
1.Technology Center, China Tobacco Guangdong Industrial Co., Ltd., Guangzhou 510385, China;2.Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
Abstract:
We have investigated the properties of cellulose diacetate in solution by using laser light scat-tering. The cellulose diacetate molecules can form micelles and micellar clusters in acetone besides the individual chains. As the concentration increases, the average hydrodynamic radius h linearly increases, whereas the ratio of gyration radius to hydrodynamic ra-dius g>/h linearly decreases. It indicates that the micelles associate and form micellar clusters due to the intermolecular interactions.
Key words:  Cellulose diacetate, Laser light scattering, Multi-aggregation form structure
FundProject:
激光光散射研究二醋酸纤维素在丙酮中的聚集
谢定海1, 李旭华1, 方细玲1, 马春风*2
1.广东中烟工业有限责任公司技术中心,广州 510385;2.华南理工大学材料科学与工程学院,广州 510640
摘要:
采用激光光散射研究了二醋酸纤维素的溶液性质. 发现在丙酮中二醋酸纤维素除了以单链形式存在外,还形成了胶束以及胶束簇集体. 随着浓度的增加,平均流体力学半径线性增加,而均方根回旋半径与平均流体力学半径的比值线性减小,表明由于二醋酸纤维素分子间的相互作用,胶束之间发生聚集,并形成胶束簇集体.
关键词:  二醋酸纤维素,激光光散射,多聚集态结构
DOI:10.1063/1674-0068/27/03/256-258
分类号: