表面涂覆壳聚糖对碳纤维在水中分散性的影响

在碳纤维表面物理性涂覆壳聚糖,改善了碳纤维在水中的分散性.通过显微镜和扫描电子显微镜(SEM)照片对涂覆壳聚糖前后的碳纤维形态及表面形貌进行观察,发现涂覆壳聚糖后,碳纤维表面形成了一层不均匀的壳聚糖膜,在引进羟基、氨基等亲水性基团的同时增加了碳纤维表面粗糙度;通过测定接触角的变化和分散实验表明,碳纤维的亲水性和在水中的分散性得到了改善.

Effect of Chitosan Coating on the Dispersion of Carbon Fibers in Water

In order to improve the dispersion of carbon fibers in water,the chitosan gel dissolved with carbon dioxide was coated onto the surfaces of carbon fibers.The surfaces of uncoated and coated carbon fibers were analyzed by microscope and SEM,and results indicated that the chitosan film on the fibers was not uniform.The contact angle of coated carbon fiber decreased sharply and the dispersion of carbon fibers in water was improved.