In this work,the chemical modification of rice straw by epichlorohy(ECH) was carried out.The thermoplasticity of the modified straw was briefly investigated with toluene(10 mL) used as solvent,(epichlorohy)(ECH)(8 mL) as etherifying agent,and 50% NaOH(8 mL) as swelling agent and catalyst.The reaction was carried out for 6 h at 100 ℃,modified rice straw with WPG over 80% was gained.Influences of(amounts) of epichlorohy(ECH) and NaOH,reaction temperature and reaction time were studied for weight(percent) gained(WPG) of rice straw.FTIR,X-ray,DSC were used to characterize the structure of modified rice straw.The investigation showed that the crystalline component of modified rice straw decreased from 50% to 30%,and the glass transition temperature(T_g) of modified rice straw was 187.4 ℃.The results may offer a theoretical basis for potential application.
