等离子体诱导下丙烯酸在PET表面的接枝聚合

Grafting Polymerization of Acrylic Acid onto Pet Films by Plasma Inducement

利用等离子体对聚对苯二甲酸乙二酯(PET)薄膜进行表面处理,并诱导引发丙烯酸(AAc)在其表面接枝聚合,制备了具有结合牢固、高亲水性的聚丙烯酸(PAAc-g-PET)复合膜。通过表面衰减全反射-傅里叶红外光谱(ATR-FTIR)结构表征,证明了PAAc成功接枝到PET薄膜上。通过对AAc在PET薄膜表面接枝率的动力学影响因素的系统分析,获得了高接枝率下的PAAc-g-PET复合膜的最佳实现条件。

The copolymerization of poly ethylene terephthalate（ PET） films with acrylic acid（ AAc） initiated by air plasma treatment was carried out in our work. Plasma- induced graft polymerization of AAc onto PET films was performed by low temperature plasma after surface treatment of PET films. The strcture and properties of the PET films were investigated by ATR- FTIR and contact angle measurements. PET films pretreated by plasma were subjected to further surface modification by grafting AAc on their surface. Surface morphology of PAAc grafted onto PET films exhibited relatively uniform size distribution.