In situ preparation of Mg(OH)2/polystyrene nanocomposite via soapless emulsion polymerization |
| |
Authors: | Fangzhi Zhang Hong Zhang Zhixing Su |
| |
Affiliation: | (1) College of Chemistry and Chemical Engineering, Lanzhou University, 730000 Lanzhou, China |
| |
Abstract: | Magnesium hydroxide nanoneedles modified by oleic acid OA–Mg(OH)2]
were synthesized via alkaline injection into magnesium chloride solution in the presence
of oleic acid (OA). The magnesium hydroxide/polystyrene nanocomposite Mg(OH)2/PS]
was then prepared by soapless emulsion polymerization technique in an aqueous suspension. The Fourier
transform infrared (FT–IR) analysis shows that the polystyrene was covalently grafted onto the
surfaces of the Mg(OH)2nanoneedles OA–Mg(OH)2]. The
dispersion of Mg(OH)2nanoneedles in polystyrene is uniform as observed by transmission
electron microscope (TEM). The grafting percentage was determined by means of elemental analysis (EA).
The thermal behavior determined by the differential scanning calorimetry (DSC) indicated that Mg(OH)2/PS
had a higher glass transition temperature than PS matrix, and it can be concluded that Mg(OH)2
could retard the degradation of PS based on the data of thermal gravimetric analysis (TGA)
and differential thermoanalysis (DTA). |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |