以主鏈帶硫醇基之水性聚胺基甲酸酯製備奈米金的催化性質研究

Catalytic Properties of Gold nanoparticles Prepared by Waterborne Polyurethanes Containing Thiol Groups on the Chain Side

蘇育材(Yu-tsai Su)

指導教授 ： 張朝欽

淡江大學/工學院/化學工程與材料工程學系碩士班/碩士(2008年)

https://doi.org/10.6846/TKU.2008.00658

摘要

本實驗成功製備水性聚胺基甲酸酯微球(WPU)-奈米金(GNPs)，使用一般的1,4-BD與含硫醇基的1-thioglycerol鏈延長劑分別製備水性聚胺基甲酸酯微球，而奈米金粒子會與WPU微球上的官能基產生鍵結，並討論WPU及WPU-GNPs的製備與性質表現，之後進行WPU-GNPs在催化反應的研究。
在FT-IR、EA、GPC與DTS結果顯示成功製備WPU微球，利用DTS、UV-Vis、TEM and ESCA結果說明，GNPs在球表面上會提升微球在水中的分散穩定性，接著進行WPU球含不同奈米金濃度的催化反應。
催化結果顯示，低濃度奈米金會漸漸地減低催化能力，而較少量的WPU製備奈米金有高催化能力且主鏈帶硫醇的微球-奈米金的催化能力較差。此外，在一星期之後奈米金會聚集，導致降低催化能力。

關鍵字

奈米金 ； 水性聚胺基甲酸酯 ； 高分子-奈米金奈米複合材料

並列摘要

Waterborne polyurethane (WPU) microspheres containing gold nanoparticles (GNPs) were prepared successfully in this study. A common chain extender (1,4-butyldiol) and a chain extender containing a thiol group (1-thioglycerol) were used to prepared the WPU microspheres. The assembly of GNPs on the surface of WPU microspheres occurs through the binding of the function groups of WPU with gold. The preparation and characterization of WPU and WPU-GNPs microspheres were investigated, and the catalytic properties of WPU-GNPs microspheres were also examined. FT-IR, EA, GPC and DTS results show that WPU microspheres were prepared successfully. DTS, UV-Vis, TEM, and ESCA results indicate the assembly of GNPs on the surface and also show that GNPs can improve the stability of dispersion in water of microspheres. WPU microspheres containing GNPs of different concentrations were proceeded catalytic reactions. Preliminary results indicate that the catalytic activity decreases gradually when the GNPs concentration decreases. UV-Vis results show that less amount of WPU with GNPs had high catalytic activity in water medium and also prove that low catalytic activity of WPU microspheres containing thiol groups. Moreover, GNPs can promote the agglomeration after one weekend, which led to decrease of the catalytic activity.

並列關鍵字

gold nanoparticles ； waterborne polyurethane ； polymer-nanogold nanocomposites

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