纳米SiO_2制备、修饰及其表面酰胺化  

Preparation,characterization and amidation of nanometer SiO_2

作　　者：孙倩[1] 杨明[1] 张观流[1] 

机构地区：[1]武汉工业学院化学与环境工程学院,湖北武汉430023

出　　处：《武汉工业学院学报》2012年第3期26-29,共4页Journal of Wuhan Polytechnic University

基　　金：武汉工业学院研究生教育创新基金(2010cx018)

摘　　要：用硅烷偶联剂(3-Aminopropyltriethoxysilane,APTS)对纳米SiO2进行表面改性,得到改性的SiO2颗粒(APTS-SiO2),再用丙烯酰氯与APTS-SiO2颗粒反应制备了表面连接上丙烯酰胺的纳米复合材料(AA-APTS-SiO2)。采用扫描电子显微镜(SEM)观察了纳米SiO2、APTS-SiO2及AA-APTS-SiO2的形貌;采用红外光谱(FTIR)和热重分析法(TG)对AA-APTS-SiO2的化学结构与组成进行了表征。研究表明:APTS-SiO2颗粒能够成功地与丙烯酰氯反应形成AA-APTS-SiO2复合颗粒,制备APTS-SiO2最优的反应条件是1 g SiO2,100 mL乙醇和水的体积比为3∶1的混合溶剂,2.0 g氨水,SiO2与APTS的摩尔比为3∶1。Nanometer SiO2 was chemically modified with silane coupling agent （3-Aminopropyltriethoxysilane, APTS）, and modified particles APTS-SiO2 were obtained. The nanocomposite material （ AA-APTS-Si02 ） which was grafted by acrylic amide on the surface was prepared by the reaction of acryloyl chloride and APTS-SiO2. The mor- phology of the nanometer Si02, APTS-SiO2 and AA-APTS-SiO2 were observed by Scanning electron microscope （SEM）. The chemical structure of the AA-APTS-SiO2was characterized by infrared spectroscopy（IR） and thermo- gravimetry（TG）. The results show that APTS-SiO2 particles can successfully react with acryloyl chloride to form AA-APTS-SiO2 composite particles. The optimal composition of reactive raw materials of the preparation of APTS- SiO2are：1. 0 g SiO2 ,100 mL mixed solvent of EtOH： H20 =3： 1,2. 0 g ammonia water,nsio2： nAPTS =3： 1.

关 键 词：二氧化硅 硅烷偶联剂 酰胺化 

分 类 号：TB383[一般工业技术—材料科学与工程]