Surface modification of magnesium hydroxide sulfate hydrate whiskers using a silane coupling agent by dry process

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	Surface modification of magnesium hydroxide sulfate hydrate whiskers using a silane coupling agent by dry process
	Zhu, Donghai 1,2; Nai, Xueying1,2 ; Lan, Shengjie 1,2,3; Bian, Shaoju 1,2,3; Liu, Xin1,2 ; Li, Wu 1,2
	2016-12-30
发表期刊	APPLIED SURFACE SCIENCE
卷号	390 页码:25-30
关键词	Magnesium Hydroxide Sulfate Hydrate Whiskers Silane Surface Modification Dry Process
摘要	In order to improve the compatibility of magnesium hydroxide sulfate hydrate (MHSH) whiskers with polymers, the surface of MHSH whiskers was modified using vinyltriethoxysilane (VTES) by dry process. The possible mechanism of the surface modification and the interfacial interactions between MHSH whiskers and VTES, as well as the effect of surface modification, were studied. Scanning electronic microscopy (SEM), transmission electron microscopy (TEM) and X-ray powder diffraction (XRD) analyses showed that the agglomerations were effectively separated and a thin layer was formed on the surface of the whiskers after modification. Fourier transform infrared (FT-IR) spectroscopy and X-ray photoelectron spectroscopy (XPS) analyses showed that the VTES molecules were bound to the surface of MHSH whiskers after modification. Chemical bonds (Si-O-Mg) were formed by the reaction between Si-OC2H5 or Si-OH and the hydroxyl group of MHSH whiskers. The effect of surface modification was evaluated by sedimentation tests, contact angle measurements and thermogravimetric analysis (TGA). The results showed that the surface of MHSH whiskers was transformed from hydrophilic to hydrophobic, and the dispersibility and the compatibility of MHSH whiskers were significantly improved in the Organic phase. Additionally, the thermal stability of the VTES-modified MHSH whiskers was improved significantly. (C) 2016 Elsevier B.V. All rights reserved.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/6358
专题	青海盐湖研究所知识仓储
作者单位	1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China 2.Chinese Acad Sci, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Donghai,Nai, Xueying,Lan, Shengjie,et al. Surface modification of magnesium hydroxide sulfate hydrate whiskers using a silane coupling agent by dry process[J]. APPLIED SURFACE SCIENCE,2016,390:25-30.
APA	Zhu, Donghai,Nai, Xueying,Lan, Shengjie,Bian, Shaoju,Liu, Xin,&Li, Wu.(2016).Surface modification of magnesium hydroxide sulfate hydrate whiskers using a silane coupling agent by dry process.APPLIED SURFACE SCIENCE,390,25-30.
MLA	Zhu, Donghai,et al."Surface modification of magnesium hydroxide sulfate hydrate whiskers using a silane coupling agent by dry process".APPLIED SURFACE SCIENCE 390(2016):25-30.