期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 627, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.colsurfa.2021.127236
关键词
Thermal; Degradation kinetics; Viscoelastic; Nanostructured; Theoretical models
资金
- NRF South Africa under Competitive Programme for Rated Researcher (CPRR) [106060, 129290]
- Faculty of Science, University of Johannesburg, South Africa
- Defense Research and Development Organization (DRDO), Delhi, India
Nanostructured self-assembled and high-performance epoxy/epoxidized poly(styrene-block-butadiene-blockstyrene) block copolymer blends with 55 mol% epoxidation degree were successfully synthesized using the solvent casting method. The study investigated the effects of the highest epoxidized SBS as a modifier and its concentration on the nanostructured morphology, viscoelastic properties, reaction induced phase separation, and thermal degradation kinetics of the epoxy/eSBS55 system. The experimental results demonstrated the superior viscoelastic and thermal properties of the novel epoxy/eSBS55 material, making it an outstanding modifier for enhancing high-performance properties in various applications such as aircraft, floorings, automobiles, and constructions.
Nanostructured self-assembled and high-performance epoxy/epoxidized poly(styrene-block-butadiene-blockstyrene) block copolymer blends with 55 mol% epoxidation degree [eSBS55]-0,5,10 and 20 phr-4, 4'diaminodiphenyl methane (DDM) material were successfully synthesized by using solvent casting method. The role of the highest epoxidized SBS (eSBS55) as a modifier and its concentration on the effect of nanostructured morphology, viscoelastic properties, reaction induced phase separation and thermal degradation kinetics of epoxy/eSBS55system were investigated in detail. Various theoretical models such as Coats-Redfern method, Broido method and Horowitz-Metzger method were applied for the first time on epoxy/eSBS systems to calculate the thermodynamic parameters and correlate experimental results. These highly enhanced viscoelastic & thermal properties and nanoscale morphology of as synthesized novel epoxy/eSBS55 material have proved that 'eSBS55'is an outstanding modifier to epoxy resin for creating superior high-performance properties required for various coating and structural applications such as in aircrafts, floorings, automobiles and constructions.
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