Preparation and application of new silicone quaternary phosphonium salt

A new silicone quaternary phosphonium salt is synthesized by SN2 reaction using triphenylphosphine and γ-chloropropyl triethoxysilane as the raw materials.The product is characterized by FTIR and 31P spectra.The finished cotton fabric with 10% quaternary phosphonium salt has excellent and durable antibacterial property with inhibition of escherichia coli of 87.1% and staphylococcus aureus of 99.7%.SEM analysis and EDC analysis indicate that the silicone quaternary phosphonium salt can improve the thermal stability of treated cotton fabric and have little effect on the wearability.