کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1526037 | 995365 | 2009 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Grafting poly(methyl methacrylate) onto silica nanoparticle surfaces via a facile esterification reaction Grafting poly(methyl methacrylate) onto silica nanoparticle surfaces via a facile esterification reaction](/preview/png/1526037.png)
Poly(methyl methacrylate) chains were grafted onto the surfaces of silica nanoparticles successfully via the direct facile esterification reaction under such mild conditions as ambient temperature, moisture and atmospheric pressure. The resulting composite nanoparticles were characterized by XPS, FTIR, 29Si NMR, TEM, TGA, and DSC techniques. Results showed that this facile graft method had high graft efficiency and the grafted polymers accounted for about 55 wt% of the composite nanoparticles. Meanwhile, the resulting nanoparticles had core–shell structure while PMMA molecules and nanoparticles combined with covalent ester bonds, and which led to the PMMA segments attached on the nanoparticle surfaces with better thermal stability and higher glass transition temperature than that of the pristine carboxyl-terminated PMMA.
Journal: Materials Chemistry and Physics - Volume 116, Issue 1, 15 July 2009, Pages 158–163