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

Authors
Journal
Chinese Chemical Letters
1001-8417
Publisher
Elsevier
Publication Date
Volume
22
Issue
11
Identifiers
DOI: 10.1016/j.cclet.2011.05.037
Keywords
  • Ppta
  • N-Pentane
  • Ice-Water Bath
  • Reaction Heat

Abstract

Abstract 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.

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