固定在聚乙烯表面的马来酰亚胺：制备、表征及其作为自由基光引发剂的应用

Maleimide immobilized on a PE surface: preparation, characterization and application as a free-radical photoinitiator.

作者信息

Silva Rafael, Muniz Edvani C, Rubira Adley F

机构信息

Grupo de Materiais Polimericos e Compositos, Departamento de Quimica, Universidade Estadual de Maringa, Avenida Colombo 5790, CEP: 87020-900 - Maringa, PR, Brazil.

出版信息

Langmuir. 2009 Jan 20;25(2):873-80. doi: 10.1021/la802309u.

DOI:10.1021/la802309u

PMID:19093763

Abstract

Maleimide groups are synthesized on the surface of PE films by means of two different routes, from oxidized and anhydride-grafted PE films. Maleimide groups covalently bonded to the surface of PE film were used as photopolymerization initiators of acrylic acid (AA) and glycidyl methacrylate (GMA). The formation of poly (acrylic acid) (PAA) and poly (glycidyl methacrylate) (PGMA) covalently bonded to the modified PE film surface by the photopolymerization process was demonstrated by ATR-FTIR, gravimetry, and SEM results. The thickness of the polymer layers formed in the polymerization depends on the irradiation time. The PAA layer formed in the polymerization is thinner than 250 nm, whereas that of PGMA in some case is thicker than 3 mum.

摘要

通过两种不同途径，即从氧化聚乙烯薄膜和酸酐接枝聚乙烯薄膜出发，在聚乙烯薄膜表面合成了马来酰亚胺基团。共价键合到聚乙烯薄膜表面的马来酰亚胺基团用作丙烯酸（AA）和甲基丙烯酸缩水甘油酯（GMA）的光聚合引发剂。衰减全反射傅里叶变换红外光谱（ATR-FTIR）、重量分析法和扫描电子显微镜（SEM）结果表明，通过光聚合过程在改性聚乙烯薄膜表面形成了共价键合的聚丙烯酸（PAA）和聚甲基丙烯酸缩水甘油酯（PGMA）。聚合过程中形成的聚合物层厚度取决于辐照时间。聚合过程中形成的PAA层厚度小于250 nm，而在某些情况下PGMA层厚度大于3μm。