Thermal degradation of PET fabrics coated with interpenetrating polymer network-silica fume mixtures

บทคัดย่อ

Thermal degradation of polyester fabrics coated with interpenetrating polymer network (IPN) and silica fume (SF) was studied. Silica fume was modified with vinyltriethoxysilane (VTES) in order to improve its hydrophobicity and the dispersibility in polymer matrix. Interpenetrating polymer network was prepared by sodium alginate (SA) mixed with 2-hydroxyethyl methacrylate (HEMA). Sodium alginate, HEMA, K₂S₂O₈, N,N^/-methylenebisacrylamide, N,N,N^/,N^/-tetramethylethylenediamine, and modified SF were mixed in aqueous solution with a little bit of nonionic surfactant. In this condition, modified SF exhibited the good dispersion ability in SA/HEMA solution. The application of solution mixture onto PET surface was carried out using a padder and followed by drying at room temperature for 1 h. Then the fabric was impregnated in 0.3 M CaCl₂ and dried at temperature of 80^oC for 1 h. The result showed that thermal property of modified PET fabric was improved by IPN-SF mixtures. Also, the content of SF had an effect on the thermal resistance of polyester fabric.