%0 Journal Article
%T Properties of Thermosets Derived from Chemically Modified Triglycerides and Bio-Based Comonomers
%A Evan S. Beach
%A Zheng Cui
%A Paul T. Anastas
%A Mingjiang Zhan
%A Richard P. Wool
%J Applied Sciences
%D 2013
%I MDPI AG
%R 10.3390/app3040684
%X A series of materials was prepared by curing acrylated epoxidized soybean oil (AESO) and dibutyl itaconate (DBI) or ethyl cinnamate (EC) comonomers to provide examples of thermosets with a high proportion of bio-based carbon, in accordance with the principles of green chemistry. The comonomers, representative of cellulose-derived (DBI) or potentially lignin-derived (EC) raw materials, were tested at levels of 25%, 33%, and 50% by mass and the resulting products were characterized by infrared spectroscopy, thermogravimetric analysis, and dynamic mechanical analysis. Both DBI and EC were incorporated into the thermosets to a high extent (>90%) at all concentrations tested. The AESO-DBI and AESO-EC blends showed substantial degradation at 390¨C400 ¡ãC, similar to pure AESO. Glass transition temperatures decreased as comonomer content increased; the highest T g of 41.4 ¡ãC was observed for AESO-EC (3:1) and the lowest T g of 1.4 ¡ãC was observed for AESO-DBI (1:1). Accordingly, at 30 ¡ãC the storage modulus values were highest for AESO-EC (3:1, 37.0 MPa) and lowest for AESO-DBI (1:1, 1.5 MPa).
%K thermoset
%K polymer
%K bio-based
%K green chemistry
%U http://www.mdpi.com/2076-3417/3/4/684