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Five different silane coupling agents such as vinyltrimethoxysilane (VTMS), vinyltriethoxysilane (VTES), trimethoxysilylpropylmethacrylate (TSPM), glycidoxypropyltriethoxysilane (GPTES) and aminopropyltriethoxysilane (APTES) were used for the surface finishing of cotton fiber by condensation polymerization in ethanol/water medium. The finished cotton fiber showed improved textile properties like tensile strength, wear comfortness, moisture absorption and wrinkle recovery, but decreased swelling in aqueous solution. The finished cotton fibers were characterized by Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD) and Energy Dispersive X-ray (EDX), thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG). Attachment of silane coupling agents was confirmed and the finished cotton fiber showed increased thermal stability than the …