Study on the effect of thiol structure on the properties of thiol-ene system

Using Pentaerythritol tetra (3-mercapto propionate) as primary thiol and Pentaerythritol tetra (3-mercapto butylate) as secondary thiol, the effect of thiol structure on the properties of the thiol-ene system were investigated. The results show that for the triallyl isocyanurate system, the thiol structure had little effect on the glass transition temperature, but for the tri (1, 2-propylene glycol) diacrylate and divinylbenzene system, the secondary thiol systems showed a higher glass transition temperature. In terms of optical properties and anti-swelling, the primary thiol system showed better performance.