Preparation and characterization of polyimide–nanogold nanocomposites from 3-mercaptopropyltrimethoxysilane encapsulated gold nanoparticles
學年 96
學期 1
出版（發表）日期 2008-01-01
作品名稱 Preparation and characterization of polyimide–nanogold nanocomposites from 3-mercaptopropyltrimethoxysilane encapsulated gold nanoparticles
作品名稱（其他語言）
著者 Chang, Chih-ming; Chang, Chao-ching
單位 淡江大學化學工程與材料工程學系
出版者 London: Elsevier Ltd
著錄名稱、卷期、頁數 Polymer Degradation and Stability 93(1), pp.109-116
摘要 In this study, we report a new design to prepare polyimide–nanogold nanocomposites of high Au content and good thermal stability. The nanocomposites were prepared from the coupling agent (3-aminopropyltriethoxysilane, APS) capped poly(amic acid) (PAA–APS) and 3-mercaptopropyltrimethoxysilane (MPS) stabilized gold nanoparticles (MPS–Au). The Si–OR groups of MPS on the surface of MPS–Au provided further reaction with APS, hence the covalent bonds between PAA and MPS–Au were formed. PAA–Au was converted into PI–Au nanocomposite by a multiple-step baking. The results of particle-sized analysis show that the sizes of the synthesized MPS–Au from different MPS/Au mole ratios (2 and 0.5) are about 2 nm and 5 nm, respectively. FE-SEM images show that MPS–Au particles are dispersed well in the prepared nanocomposites and no large-scale aggregation occurs. TGA results indicate that the decomposition temperature of each nanocomposite prepared from its washed precursor is lower than that of APS-capped polyimide, but the temperature of maximum decomposed rate of each nanocomposite is higher than that of APS-capped polyimide. The results show the high thermal stability and application potentials of the prepared polyimide–nanogold nanocomposites.
關鍵字 Gold nanoparticle;Nanocomposites;Nanogold;Polyimides
語言 en
ISSN 0141-3910
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者 Chang, Chao-ching
審稿制度 是
國別 GBR
公開徵稿
出版型式 ,電子版,紙本
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