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31.15

Hoá lý

Thái Hoàng(1), Trịnh Anh Trúc, Nguyễn Thúy Chinh, Nguyễn Thị Thu Trang

Nghiên cứu xác định 3-Aminopropyl Trietoxyl Silan ghép vào nanosilica bằng một số phương pháp hóa lý

Study on determination of 3-aminopropyltriethoxy silane grafted into nanosilica by some physico-chemical methods

Hóa học

2013

1

59-63

0866-7144

In this work, silica nanoparticles (nanosilica, SiO2) prepared through a sol-gel process were modified by 3aminopropyltrietoxy silane (APTES). The presence of organic groups in APTES grafted to surface of nanosilica was found by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and X-ray photoemission spectroscopy (XPS). The grafting content of APTES on the nanoparticles surface was determined is 2.66 wt. percent; 5.54 wt. percent; 6.89 wt. percent and 7.52 wt. percent corresponding to m-silica 5, m-silica 10, m-silica 15 and m-silica 20 samples. The calculated data according to XPS results indicated that there are one-half of the number of ethoxy groups reacted in the modification process. The above results showed that surface treatment of nanosilica with APTES were successful.

TTKHCNQG, CVv14