imide modified poly(dimethylsiloxane) with maleopimaric acid as raw material

Synthesis and characterization of imide modified poly(dimethylsiloxane) with maleopimaric acid as raw material

• Tao Xua, c,
• He Liua,
• Jie Songb,
• Shi-Bin Shanga, ,
• Zhan-Qian Songa, ,
• Xiu-Jie Chenc,
• Chong Yangc
  

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doi:10.1016/j.cclet.2015.01.011Get rights and content

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Abstract

With the natural rosin derivative (maleopimaric acid, MPA) as the raw material, imide modified vinyl poly(dimethylsiloxane) (MP-VMS) was synthesized and characterized by 1H NMR and 13C NMR. The curing kinetic parameters of MP-VMS were determined by differential scanning calorimetry (DSC) at various heating rates (5, 8, 10, 15 °C/min) from the Kissingner, Ozawa and Crane methods. The activation energy (Ea), pre-exponential factor (A) and reaction order (n) were respectively 18.6 kJ/mol, 71,108 and 0.902. The low-temperature and high-temperature resistance of its curing product were respectively investigated by DSC and thermogravimetric analysis. The results showed that incorporation of MPA could significantly improve the thermal stability of silicone while had no effect on the low-temperature resistance, and the Tmax(the temperature corresponding to the maximum weight loss rate) increased by 70.7 °C.

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Graphical abstract

With the natural rosin derivative (maleopimaric acid) as the raw material, imide modified vinyl poly(dimethylsiloxane) was synthesized. And the thermal stability of its curing product from vinyl silicone resin was significantly improved.

Keywords

• Maleopimaric acid;
• Imide;
• Polysiloxane;
• Curing kinetics;
• Differential scanning calorimetry (DSC)