天然胶乳/碳酸钙晶须医用复合材料的制备与性能

Natural Rubber Latex/Calcium Carbonate Whiskers Medical Composites:Its Preparation and Characterization

本文将超声分散后的改性碳酸钙晶须分散液加入天然胶乳,对其进行补强,制得绿色环保高性能的改性碳酸钙晶须/天然胶乳医用复合材料。系统研究了该医用复合材料的力学性能、抗菌性能及热稳定性能。结果表明,使用硬脂酸改性后的碳酸钙晶须与天然胶乳基体材料有极佳的相容性。医用复合材料的力学性能、抗菌性能及热稳定性能均比纯胶有所提高。当改性碳酸钙晶须用量为4%时,医用复合材料的各项性能达到最佳。

Calcium carbonate whiskers were modified by stearic acid,and the modified whiskers were dispersed in a liquid by ultrasonic technology.Natural rubber latex（NRL）/calcium carbonate whiskers medical composites with environmental green and high performance were developed by blending the modified whiskers dispersion liquid and natural rubber latex.The morphology,mechanical properties,antibacterial performance and themalstability properties of the composites were investigated.The results show that modified whiskers have good compatibility with NRL matrix.The incorporation of modified whiskers into rubber matrix leads to a betterment in the over-all properties of the composites.When modified whiskers loading of 5 wt%,all the performance of composites achieve optimum results.