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Updated: Sep 25, 2025

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction
Published on: January 19, 2016
Optimization of synthetic parameters of high-purity trifunctional mercaptoesters and their curing behavior for the
Seung-Mo Hong1, Oh Young Kim1, Seok-Ho Hwang1
1Materials Chemistry & Engineering Laboratory, School of Polymer System Engineering, Dankook University Yongin Gyeonggi-do 16890 Republic of Korea bach@dankook.ac.kr.
Abstract:
The direct esterification reaction between 3-mercaptopropionic acid (3-MPA) and trimethylolpropane (TMP) was conducted in the presence of various catalyst concentrations of p-toluenesulfonic acid (p-TSA) to examine the optimized synthetic conditions needed to produce high-purity trimethylolpropane-tris(3-mercaptopropionate) (TMPMP). The purity of the desired TMPMP and uncompleted side-product reduced as the acid catalyst concentration in this esterification reaction increased while the generation of thioester-based side-product increased. The equivalent ratio between epoxy and the manufactured TMPMP was maintained at 1 : 1 to monitor the curing behavior of the thiol-epoxy click reaction using the DSC technique. The thermal features of the base-catalyzed TMPMP-cured epoxy resin were assessed according to the purity of the TMPMP curing agent.
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