以异丙醇铝为催化剂,采用一步法和两步法在聚丙烯膜表面接枝聚己内酯。ATR-FTIR、XPS及表面水接触角测定分析证实了接枝反应的发生。采用一步法接枝可以得到平坦覆盖的接枝层,而用两步法接枝得到了细小颗粒分布的表面,膜表面氧与碳的摩尔比分别为0.167和0.141。接枝聚己内酯后,BOPP膜表面的水接触角由100°降低到82°。
Ring-opening polymerization of ε-caprolactone (ε-CL) on the surface of hydroxylated biaxially oriented polypropylene (BOPP) film was initiated by aluminum isopropoxide in a sequential two-step method and in a one-step method. Attenuated total reflectance-Fourler transform infrared (ATR-FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and contact angle measurements confirmed that the grafting reaction occurred successfully in both cases, and that the one-step method was more effective than the sequential two-step method. SEM results show that a flat surface with a grafted layer covering could be obtained by the one-step method, whilst a surface with a distribution of small particles was obtained by the two-step method.