聚丁二酸丁二醇酯疏水薄膜的制备与性能研究

摘要

以氯仿为溶剂、无水乙醇为非溶剂,利用聚合物微相分离原理,制备了具有强疏水性的生物可降解聚丁二酸丁二醇酯(PBS)薄膜材料,探究了PBS浓度和非溶剂含量等因素对所制薄膜的润湿性、结晶性、黏附力以及表面形貌的影响.结果表明,通过改变PBS浓度和非溶剂的含量,得到不同的表面微观形貌,接触角随着非溶剂含量的增加而增大,最大为142.5°,比未处理PBS薄膜的接触角增大了60°左右;结晶度越大,材料对水的接触角越大;所得到的薄膜材料均为具有高黏附性的类玫瑰花效应的疏水表面.%In this work,a type of biodegradable polybutylene succinate (PBS )film with strong hydrophobicity was designed and prepared through a microphase-separation method by using chloroform as a solvent and anhydrous ethanol as a nonsolvent.The effects of PBS concentration and non-solvent content on wettability,crystallinity,adhesion and surface morphology of the prepared PBS film were investigated.The results indicated that different surface microstructures were obtained by changing the PBS concentration and nonsolvent content.The water contact angle increased with an increase of nonsolvent content and achieved a maximum value of 142.5°,which was higher than that of untreated PBS by approximately 60 °.The crystallinity of PBS film exhibited a positive relationship with hydrophobicity,and the higher the degree of crystallinity,the greater the water contact angle of PBS film.The hydrophobic film demonstrated a rose-like hydrophobic surface with high adhesion.