Abstract:

Abstract： Kinetics of bulk polymerization of acrylic rosin (βacryloxyl ethyl) ester (AR2HEA) in the presence of initiator AIBN was studied by using nonisothermal and isothermal differential scanning calorimeter (DSC). The results showed that the delta enthalpy increase gradually with increasing the amount of AIBN. In the nonisothermal condition: The rate of heating had no significant effecton delta enthalpy in the constant dosage of initiator. By using n t order kinetics, the resulted dynamic equations of polymerization of AR2EHA was d_α/d_t=5.58×10.13× exp(-1031×103/RT)(1-α)^0.941. In the isothermal condition: the results showed that the temperature had no significant effect on the enthalpy of polymerization and the velocity of polymerization increased with increasing temperature. The dynamic equation of polymerization of AR2EHA was dα/dt=1.48× 10.14 × exp (-1059×103/RT)(1-α)^1.05. The relationships between reaction degree and time deduced by these two equations were almost the same as the real data.

Key words: mso-bidi-font-family: 宋体">Key wordsmso-bidi-font-family: 宋体">： mso-bidi-font-family: 宋体">acrylic rosin(mso-bidi-font-family: 宋体">&beta, acryloxyl ethyl)ester; differential scanning calorimeter; kifont-family: 宋体, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">netics of the Polymerization