聚胺基甲酸酯-奈米金奈米複合材料之製備與性質分析

Preparation and Characterization of Polyurethane-Nanogold Nanocomposites

鄭瑋力(Wei-Li Cheng)

指導教授 ： 張正良

淡江大學/工學院/化學工程與材料工程學系碩士班/碩士(2006年)

https://doi.org/10.6846/TKU.2006.00494

摘要

本研究有別於其他文獻使用高分子直接製備奈米金，首先以化學還原法製備含有羥基硫醇包覆的奈米金，使其外層具有反應官能基，取代合成聚胺基甲酸酯高分子當中的鏈延長劑，與異氰酸鹽的NCO官能基反應產生鍵結，將奈米金均勻分散在高分子結構當中。研究中分別以線性與非線性多元醇結構製備聚胺基甲酸酯-奈米金複合材料及薄膜。本研究的獨特點為利用高分子與奈米金間的化學鍵結，製備固態的高分子-奈米金奈米複合材料或薄膜，提升奈米金在奈米複合材料或薄膜中的含量，並討論奈米金對於高分子結構與性質的影響，以增進其應用範圍。
利用穿透式電子顯微鏡以及雷射奈米粒徑量測儀的鑑定，確認羥基硫醇包覆奈米金的形狀為圓形，大小約為5 nm。藉由X光繞射儀、紫外線-可見光光譜儀以及能量分散X光譜儀的鑑定，證實奈米金在製備複合材料中的粒徑大小不變且均勻地分散。熱重量分析顯示高分子-奈米金奈米複合材料的熱裂解溫度較原高分子有提升。動態機械分析儀、應力-應變性質測試以及膠含量測試結果顯示，機械性質與交聯程度會隨著奈米金添加量的增加而隨之提升。

關鍵字

奈米金 ； 聚胺基甲酸酯 ； 高分子-奈米金奈米複合材料

並列摘要

This research is different from other literatures that use the polymer to prepare gold nanoparticles(GNPs) directly. First, MUD coated-GNPs was synthesized by the chemical reduced method. The shell of the prepared GNPs contains -OH group that can react with the -NCO group of diisocyanate, and hence GNPs can disperse uniformly in the nanocomposites. Polyurethane-nanogold nanocomposites are prepared by linear and nonlinear polyol, respectively. The remark on this research is the high content of GNPs in the nanocomposites by the chemical bonding between polymers and GNPs. How the GNPs affect the structure and properties of the polymer, and in order to promote its range of application in the future were discussed in the study.
TEM and size measurement confirm that the shape of the GNPs is spherical and the size of the GNPs is about 5 nm. According to the results of XRD, UV-Vis and EDS, the GNPs are well dispersed in the prepared nanocomposites. The analysis of TGA indicates that the decomposed temperature of nanocomposites is higher than that of their relative pure polyurethane. DMA, testing machine, and gel content results reveal that the mechanical properties and degree of cross-link are raised by increasing the content of GNPs.

並列關鍵字

gold nanoparticles ； polyurethane ； polymer-nanogold nanocomposites

參考文獻

3. Faraday, M. P. Trans. R. Soc. London 1857, 147, 145.

4. Turkevich, J.; Kim, G. Science 1970, 169, 873.

5. Yeh, M. S.; Yang, Y. S.; Lee, Y. P.; Lee, H. F.; Yeh, Y. H.; Yeh, C. S. J. Phys. Chem. B 1999, 103, 6851.

7. Han, M. Y.; Quek, C. H. Langmuir 2000, 16, 362.

9. Yu, Y. Y.; Chang, S. S.; Lee, C. L.; Wang, C. R. C. J. Phys. Chem. B 1997, 101, 6661.