Papers by Keyword: Polyamide Film

Abstract: We propose an innovative approach to impart graphene properties to the surface of thin-film composites polyamide. Specifically, biocidal properties were obtained by covalently binding graphene to the polyamide surface. Grafting of polymer onto graphene generate nanocomposites, which heighten anti-bacterial property by changing on morphology and graphene structure. Purpose of this survey is studying the degradation of bacteria wall by grafted graphene to polyamide. In this study, the graphene should be functionalized in order to boost the side activities, antitoxin property and dispersion in solution. Then, the covalent bonds are established between graphene and polyamide by a linkage function such as ethylendiamine. The result of grafting polymer has been characterized by TGA, SEM and XRD and evaluated for the anti-bacterial property of grafted polymer by analysis on E.Coil bacteria cells. The test of bacteria in present of grafted polyamide lead to destruction of 62% of bacteria in 1 hr.

Abstract: Organic polymer coated with hydroxyapatite (so-called apatite) on its surface is a candidate of new hybrid materials for medical applications since it is expected to show bone-bonding ability and achieve mechanical properties derived from organic substrate. We have shown that some kinds of polyamide films containing carboxyl group or sulfonic group form hydroxyapatite in the simulated body environment, when they are incorporated with calcium chloride. In the present study, the polyamide containing carboxyl groups were modified with silanol groups and its apatite-forming ability was investigated in 1.5SBF, which has ion concentrations 1.5 times those of a simulated body fluid (SBF). It was found that polyamide films modified with silanol groups showed higher ability to induce apatite on its surface in 1.5SBF than the films without the modification, when they were incorporated with calcium chloride.