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Citation: TANG Long-Xiang, LIU Zhen, LIU Chun-Hua, WANG Ping-Hua. Nano-silica Grafted with Polybutylacrylate and Its Modification for Polyoxymethylene[J]. Chinese Journal of Applied Chemistry, ;2009, 26(7): 775-779. shu

Nano-silica Grafted with Polybutylacrylate and Its Modification for Polyoxymethylene

1.
School of Chemical and Engineering, Hefei University of Technology, Hefei 230009

Corresponding author: TANG Long-Xiang,
Received Date: 16 July 2008
Available Online: 8 October 2008
Fund Project: 国家自然科学基金资助项目(50573016) (50573016)安徽省高等学校青年教师资助计划项目(2006jq1007) (2006jq1007)

Nano-silica(SiO₂) grafted poly(butyl acrylate) (PBA) (SiO₂-g-PBA) via surface-initiated atom transfer radical polymerization(ATRP),and the modification of polyoxymethylene(POM) with SiO₂-g-PBA nano composited particles were studied.The results of Fourier transform infrared(FT-IR) spectrometry,transmission electron microscopy(TEM),scanning electron microscopy(SEM),and thermogravimetic analysis(TGA) show that SiO₂-g-PBA nano composited particles are more easily dispersed in the matrix than bare nano-SiO₂.The impact property of POM/SiO₂-g-PBA composites is improved.When the mass fraction of SiO₂-g-PBA nano composited particles is 2%,the impact strength of the composited materials amounts to 71.2 kJ/m²,which is 7 times more than that of pure POM.Meantime,the tensile strength can also reach 68.1 MPa.
- atom transfer radical polymerization,
- surface grafting nano silica,
- SiO₂-g-PBA,
- nano composited particle,
- polyoxymethylene,
- mechanical properties
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