期刊
PROGRESS IN ORGANIC COATINGS
卷 150, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.porgcoat.2020.105986
关键词
UV-curable coatings; Bio-based monomer; Ferulic acid; Thiol-ene
In this study, biorenewable FA was allylated to produce a library of mono or diallylated monomers, which were then photo-chemically cured with TRIS to form crosslinked films. The reactivity of the monomers towards TRIS was investigated, revealing that the addition of monoallylated monomer could control the glass transition temperature of the final crosslinked network.
Y Ferulic acid (FA) is an unsaturated hydroxycinnamic acid that can be isolated from lignin. In this study, the biorenewable FA was allylated to result in a library of monoor diallylated monomers, either having the inherent cinnamoyl double bond intact or saturated through hydrogenolysis. All monomers were photo-chemically cured with trimethylolpropane tris(3-mercaptopropionate) (TRIS) into crosslinked films in the presence of a photo initiator (Irgacue 819). The reactivity of the FA-derived monomers toward TRIS was investigated in detail by photorheology and FT-IR spectroscopy to reveal details on the relative reaction rates for the different alkene groups. The thermo-mechanical properties of the crosslinked films were fully characterized by means of dynamic mechanical analysis (DMTA) and thermal calorimetry (DSC). It was demonstrated that the glass transition temperature of the final crosslinked network could be controlled by the addition of a monoallylated monomer. By increasing the content of the monoallylated compound, it was possible to observe a linear decrease of the Tgvalues of the crosslinked films.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据