Citation: Hai-yin Yu, Jia-shan Gu, Jun Du, Ming-yun Guan. STUDY ON THE SURFACE MODIFICATION OF NANO-TiO2 BY GRAFTING PMMA/PBMA AND ITS THERMAL STABILITY[J]. Chinese Journal of Polymer Science, ;2005, 23(3): 243-247. shu

STUDY ON THE SURFACE MODIFICATION OF NANO-TiO2 BY GRAFTING PMMA/PBMA AND ITS THERMAL STABILITY

Corresponding author: Hai-yin Yu,
Received Date: 9 February 2004
Revised Date: 12 May 2004

The surface of nano-TiO2 was encapsulated with hydroxyl-propyl-methyl cellulose (HPMC), and then cografted with acrylates. Conditions of absorbing and grafting have been studied. Modified nano-TiO2 particles were characterized by FT-IR spectra, TEM and TG analysis. It was convinced from FT-IR studies that both methyl methacrylate (MMA) and butyl-methacrylate (BMA) were co-grafted onto the surface of nano-TiO2 particles. TEM images show that the surface of nano-TiO2 particles was successfully modified by a thick layer of film-like polymer. TG results demonstrate that the decomposition temperature of HPMC-g-PMMA/PBMA, which has been grafted onto the surface of nano-TiO2, is 56.9 K higher than that of HPMC-g-PMMA/PBMA.
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