摘要
为实现多巴胺的高效聚合,将Co^(2+)引入多巴胺反应体系中,Co^(2+)的催化作用实现了多巴胺的快速聚合。在聚苯乙烯(PS)微球上黏附聚多巴胺(PDA),与不加金属离子的反应相比,当添加的CoCl_2·6H_2O对多巴胺的物质的量分数为40%时,得到相同PDA含量的复合微球的反应时间可以从16 h缩短至1 h,并且复合微球中PDA以及Co含量随着CoCl_2·6H_2O添加量的增加以及反应时间的延长而增加。复合微球粉末经过热压得到的复合材料具有三维网络结构,Co^(2+)的加入使得PDA与PS具有更好的相容性。PDA·Co/PS复合材料的热性能和力学性能比PDA/PS有更多的提升。
To achieve high-efficiency polymerization of dopamine, Co^2+ was introduced into the dopamine reaction system, the catalytic action of Co^2+ achieved rapid polymerization of dopamine. The polydopamine(PDA) was adhered to the polystyrene(PS) microspheres. When the added molar ratio of CoCl2·6 H2O to dopamine was 40%, the reaction time of modified microspheres with the same PDA content could be shortened from 16 h to 1 h, compared with the reaction without metal ions. The content of PDA and Co in modified microspheres increased with increasing of the amount of CoCl2·6 H2O addition and reaction time.The composites with 3D network structure were prepared by hot pressing the powder of modified microspheres, and the introduction of Co2+resulted in better compatibility between PDA and PS. In addition,the thermal and mechanical properties of PDA·Co/PS composites were more improved than that of PDA/PS.
作者
李思汗
王彦
诸静
于俊荣
胡祖明
LI Si-han;WANG Yan;ZHU Jing;YU Jun-rong;HU Zu-ming(State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of MaterialsScience and Engineering, Donghua University, Shanghai 201620, China)
出处
《合成纤维》
CAS
2019年第5期42-48,共7页
Synthetic Fiber in China
