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Abstract
The reaction of E-glass short fibers with tert-butyldiphenylchlorosilane (TBDPCS) and trimethylchlorosilane (TMCS) was studied by FTIR spectroscopy in water and in toluene. Fiber coating obtained from TMCS in aqueous solution contained siloxane bonds, by which the trimethylsilyl group was attached to the glass surface. Coatings obtained from TBDPCS, however, consisted of silane and silanol, and no siloxane bonds were observed. This may be attributed to the effect of steric hindrance in the reaction.