Citation: Tao Xu, He Liu, Jie Song, Shi-Bin Shang, Zhan-Qian Song, Xiu-Jie Chen, Chong Yang. Synthesis and characterization of imide modified poly(dimethylsiloxane) with maleopimaric acid as raw material[J]. Chinese Chemical Letters, ;2015, 26(5): 572-574. doi: 10.1016/j.cclet.2015.01.011 shu

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

Tao Xu ^a,c ,
He Liu ^a ,
Jie Song ^b ,
Shi-Bin Shang ^a,, ,
Zhan-Qian Song ^a,, ,
Xiu-Jie Chen ^c ,
Chong Yang ^c

1.
a Institute of Chemical Industry of Forestry Products, Chinese Academy of Forestry, Key Laboratory of Biomass Energy and Material, National Engineering Laboratory for Biomass Chemical Utilization, Key and Open Laboratory on Forest Chemical Engineering, SFA, Nanjing 210042, China;
2.
b Department of Chemistry and Biochemistry, University of Michigan-Flint, Flint, MI 48502, USA;
c Shenzhen Guanheng New Materials Technology Co.
c Shenzhen Guanheng New Materials Technology Co., Ltd., Shenzhen 518109, China

Corresponding author: Shi-Bin Shang, Zhan-Qian Song,
Received Date: 30 November 2014
Available Online: 26 December 2014
Fund Project: This work is supported by the National Natural Science Foundation of China (No. 31200446). (No. 31200446)

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 ℃/min) from the Kissingner, Ozawa and Crane methods. The activation energy (E_a), 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 T_max (the temperature corresponding to themaximum weight loss rate) increased by 70.7 ℃.
- Maleopimaric acid,
- Imide,
- Polysiloxane,
- Curing kinetics,
- Differential scanning calorimetry (DSC)
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