Preparation of Silanized-Chitosan via Solution-Casting Method: Study on the Mechanical, Water Adsorption and Swelling Area Properties

Silanizing of chitosan has been prepared using the solution-casting method. The silanizing agent is 3-glycydiloxypropyl trimethoxysilane (GPTMS). The compounding of chitosan/GPTMS was conducted for 1 hour at 80°C by varying GPTMS compound (5-20 wt %) and the final product is referred as Cs/GPTMS. The mechanical properties, including tensile strength, elongation and young modulus were tested according to ASTM D882-02. The addition of 15 % of GPTMS was able to improve the tensile strength value up to 55.66%. However, the elongation decreased to 64.89 %. Moreover, the water adsorption and swelling area properties were studied in this research to evaluate the material ability. Both of water adsorption and swelling area properties decreased by the presence of GPTMS in chitosan. The Cs/GPTMS materials to be promising candidate materials for plastic engineering due to their properties meet the requirement.