文献类型：会议论文

英文题名：Preparation, characterization and hemostatic properties of chitosan caffeates

作者：Lu, Sitong[1]; Zhang, Dongying[1]; Hu, Zhang[1]; Li, Sidong[1]; Li, Puwang[2]

机构：[1] Faculty of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang, 524088, China; [2] Agricultural Product Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, 524001, China

会议论文集：Advanced Materials and Engineering Materials VIII

会议日期：April 18, 2019 - April 19, 2019

会议地点：Hong Kong, Hong kong

语种：英文

外文关键词：X ray diffraction - Fourier transform infrared spectroscopy - Voltammetry - Titration - Crystallinity

外文摘要：In this paper, chitosan and caffeic acid were used as starting materials to prepare chitosan caffeates by reflux-heating and freeze-drying. The structures of chitosan caffeates were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and potentiometric titration. At the same time, the physical properties of chitosan caffeates were tested and the hemostatic properties were evaluated. The results showed that four chitosan caffeates with different mass ratios of chitosan and caffeic acid (1:1, 1:2, 1:4, 1:6) had been successfully prepared, which enhanced the water solubility. FTIR analysis demonstrated that caffeic acid had been successfully grafted onto chitosan chains. XRD showed that the crystal form of chitosan changed to some extent and the chain had some regularity in some directions, but its crystallinity reduced. Chitosan caffeates, particularly mass ratio of 1:1, showed excellent hemostatic properties and even better than chitosan and the positive control (Yunnan Baiyao), which were expected to be developed as an effective biomaterial for hemostasis. ? 2019 Trans Tech Publications Ltd, Switzerland.