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.
出处
《武汉工业学院学报》
CAS
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)
关键词
二氧化硅
硅烷偶联剂
酰胺化
Si02
3-Aminopropyltriethoxysilane
amidation
