Synthesis and properties of antibacterial polyurethane with novel Bis(3-pyridinemethanol) silver chain extender

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题名:	Synthesis and properties of antibacterial polyurethane with novel Bis(3-pyridinemethanol) silver chain extender
作者:	Tsou, Chi-Hui Lee, Hsun-Tsing Hung, Wei-Song Wang, Chyung-Chyung Shu, Chia-Chen Suen, Maw-Cherng De Guzman, Manuel
贡献者:	紡工系
关键词:	Polyurethane Chain extender Bis(3-pyridinemethanol) silver Antibacterial Positron annihilation lifetime spectroscopy Free volume
日期:	2016-02-24
上传时间:	2016-03-11 15:25:32 (UTC+8)
摘要:	To synthesize antibacterial polyurethane (PU) films, a novel chain extender, bis(3-pyridinemethanol) silver (BPDS), and a PU prepolymer were also synthesized through coordination and covalent reactions. The effects of incorporating different amounts of BPDS were investigated by characterizing the BPDS/PU films using various instruments: FTIR, TGA, DSC, DMA, XRD, EDX, universal testing machine, contact angle goniometer, and positron annihilation spectroscopy (PALS). With a higher BPDS content, the glass transition temperature, final degradation temperature, and Young's modulus were all enhanced; however, the tensile strength and elongation at break were both reduced. PALS analysis revealed that the more rigid and randomly packed structure of the BPDS/PU films at a higher BPDS content was characterized by a broader free volume size distribution that consisted largely of much smaller free volume holes. Quantitative tests with Staphylococcus aureus and Escherichia coli indicated excellent antibacterial properties, suggesting that the PU films could be used repeatedly. (C) 2016 Elsevier Ltd. All rights reserved.
關聯:	POLYMER 卷: 85 頁碼: 96-105
显示于类别:	[紡織工程學系] 期刊論文

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