Citation: Tao Zhang, Guo Hua Luo, Fei Wei, Yan Yan Lu, Wei Zhong Qian, Xin Lin Tuo. A novel scalable synthesis process of PPTA by coupling n-pentane evaporation for polymerization heat removal[J]. Chinese Chemical Letters, ;2011, 22(11): 1379-1382. doi: 10.1016/j.cclet.2011.05.037 shu

A novel scalable synthesis process of PPTA by coupling n-pentane evaporation for polymerization heat removal

Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

Received Date: 2 March 2011

Fund Project: The authors would like thank the National Program on Key Basic Research Project (973 Program)(No.2011CB606101), National Natural Science Foundation of China (No.51003052) and National Science Foundation for Post-doctoral Scientists of China (No.023205066) for financial support.

In this study, we compared the effect of n-pentane and ice-water bath on removing the thermal effect in the poly (p-phenylene terephthalamide) (PPTA) polymerization process. The results indicate that the n-pentane can help to transfer the reaction heat faster and better. Adding suitable amount of n-pentanes into the PPTA preparation process not only improve the heat transfer, but also reduce the motor power in the polymerization process. Moreover, the introduction of n-pentane properly does not result in decrease of the inherent viscosity (η_inh) of polymer. Instead, it leads to increased viscosity of polymer during the PPTA preparation process. The results indicate that n-pentane can effectively transfer the reaction heat and avoid overheating during the polymerization of PPTA.
- PPTA,
- n-Pentane,
- Ice-water bath,
- Reaction heat
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