蜡
壳聚糖
吸水率
极限抗拉强度
接触角
润湿
吸附
材料科学
涂层
石蜡
复合材料
化学工程
化学
吸附
有机化学
工程类
作者
Anyaporn Boonmahitthisud,Chontirat Booranapunpong,Chalunthon Pattaradechakul,Supachok Tanpichai
标识
DOI:10.1016/j.ijbiomac.2023.124412
摘要
On being exposed to water, cellulose paper swells and its mechanical properties become weak. In this study, natural wax with an average particle size of 12.3 μm extracted from banana leaves was mixed with chitosan to prepare coatings applied on paper surfaces. Chitosan efficiently dispersed banana leaf-extracted wax on paper surfaces. The mixed chitosan and wax coatings considerably influenced paper properties, including yellowness, whiteness, thickness, wettability, water absorption, oil sorption, and mechanical properties. The coating induced hydrophobicity in the paper, resulting in a significant increase in the water contact angle from 65.1 ± 7.7° (uncoated paper) to 123.2 ± 2.1°, and a decrease in water absorption by ⁓64 % to 52.6 ± 1.9 %. The coated paper demonstrated an oil sorption capacity of 212.2 ± 2.8 %, which was ⁓43 % greater than that of the uncoated paper (148.2 ± 5.5 %), and the tensile strength of the coated paper improved under wet conditions compared to the uncoated paper. Additionally, a separation of oil in water was observed for the chitosan/wax coated paper. Based on these promising results, the paper coated with chitosan and wax could be used for direct-contact packaging applications.
科研通智能强力驱动
Strongly Powered by AbleSci AI