Fabrication of new antifungal polyamide-12 material
Copyright policy )Fabrication of new antifungal polyamide-12 material
Water-resistant polymeric biocide poly(hexamethylene guanidine) dodecylbenzenesulfonate (PHMG-DBS) was synthesized by anion metathesis between poly(hexamethylene guanidine) hydrochloride and sodium dodecylbenzenesulfonate and subsequently characterized using elemental analysis, Raman spectroscopy and thermogravimetric analysis. It is found that PHMG-DBS is thermally stable to at least 350 °C, which makes it suitable for melt blending with polyamide (PA) resins. An antifungal PA-12 composition was prepared by compression moulding of PA-12 and PHMG-DBS powder mixture at 240 °C. The characteristics of the prepared films were investigated: surface roughness and hydrophobicity using atomic force microscopy and contact angle measurements, respectively. No significant change in the material characteristics is observed compared to pure PA-12 films. PA-12 films containing 2 wt% of the PHMG-DBS biocide are found to be highly resistant against Trychophyton mentagrophytes fungus. Copyright © 2012 Society of Chemical Industry
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