Plasticizing effect of biodegradable dipropylene glycol bibenzoate and epoxidized linseed oil on diglycidyl ether of bisphenol A based epoxy resin. Issue 28 (5th March 2021)

• Record Type: Journal Article
• Authors: Okoro, Chinedu; Mohammed, Zaheeruddin; Jeelani, Shaik; Rangari, Vijaya
• Is Part Of: Journal of applied polymer science. Volume 138:Issue 28(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-03-05
• Subjects: mechanical properties -- structure‐property relationships -- synthesis and processing techniques -- thermal properties -- viscosity and viscoelasticity; Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.50661
• Languages: English
• ISSNs: 0021-8995

Abstract

Abstract: Major limitation for use of epoxy thermosets in engineering applications is its sudden brittle failure. In the present study dipropylene glycol dibenzoate (DPGDB) based plasticizer is used to modify diglycidyl ether of bisphenol A (DEGEBA) based epoxy resin system via simple blending technique. Bio‐based epoxidized linseed oil was also used to modify epoxy resin system and compared with DPGDB modified resin. For DPGDB modified resin storage modulus and loss modulus of the epoxy system modified with 10% plasticizer increased by 7.54% and 12.24%, respectively. The primary mechanism responsible for such behavior is improved crosslinking density. With 5% plasticizer loading, flexural strength increased by 21%. There was an improvement of 312.74% in strain at failure for 10% plasticizer loading, while preserving its mechanical strength. It was found that DPGDB based modification was better than epoxidized linseed oil modification. Abstract :