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Citation: SONG Qiu-Sheng, SHI Tie-Jun, WANG Hua-Lin. Preparation and Characterization of Continuous PAA/SiO₂ Hybrid Fibers by Sol-Gel Method[J]. Chinese Journal of Applied Chemistry, ;2007, 24(8): 953-956. shu

Preparation and Characterization of Continuous PAA/SiO₂ Hybrid Fibers by Sol-Gel Method

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

Corresponding author: SHI Tie-Jun,
Received Date: 30 September 2006
Available Online: 29 January 2007
Fund Project: 国家自然科学基金资助项目(50373010) (50373010)

By sol-gel in-situ polymerization method,a reactive hybrid sol was prepared with tetrethorylsilane (TEOS) as silicon source,vinyltrithorylsilane (VTEOS) as coupling agent via hydrolysis and condensation,then acrylic acid containing AIBN was added to it and polymerized in-situ.After being aged,continuous PAA/SiO₂ hybrid fibers were prepared by drawing from this hybrid sol.The mechanism of hybrid reaction,spinnablity of the hybrid sol,structure and micromorphology and performance of the fiber were studied by FT-IR,TGA,SEM and experiment of immersion in water.The results show that the hybrid sol can be drawn into fibers when its viscosity become 1 400~3 000 mPa·s,its spinning time reaches 1 h,PAA was linked with SiO₂ networks by chemical bonds.In the interior of the fiber,a homogeneous and continuous phase was formed by organic and inorganic components,and the hybrid fiber is better in resistance to heat and to water than pure PAA.
- organic-inorganic hybrids,
- PAA,
- SiO₂,
- hybrid fibers,
- sol-gel method
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Preparation and Characterization of Continuous PAA/SiO₂ Hybrid Fibers by Sol-Gel Method