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Dielectric Properties of Bio-Based Diphenolate Ester Epoxies
Michael S McMaster1, Talha E Yilmaz2, Ammar Patel3
1Department of Physics , Case Western Reserve University , 2076 Adelbert Road , Cleveland , Ohio 44106 , United States.
ACS Applied Materials & Interfaces
|April 6, 2018
Summary
Bio-based thermosets, diglycidyl ether of diphenolate esters (DGEDP), show promise as dielectric materials. DGEDP-propyl exhibits dielectric properties comparable to petroleum-derived diglycidyl ether of bisphenol A (DGEBA).
Area of Science:
- Materials Science
- Polymer Chemistry
- Renewable Energy Materials
Background:
- Petroleum-derived diglycidyl ether of bisphenol A (DGEBA) is widely used but faces environmental concerns.
- Thermoset bio-based diglycidyl ether of diphenolate esters (DGEDP) offer a sustainable alternative with comparable mechanical properties.
- Levulinic acid serves as a safe and renewable feedstock for DGEDP synthesis.
Purpose of the Study:
- To evaluate DGEDP-esters as potential replacements for DGEBA in dielectric applications.
- To synthesize and characterize a series of DGEDP-esters (methyl, ethyl, propyl, butyl).
- To investigate the dielectric properties of these bio-based materials.
Main Methods:
- Synthesis of DGEDP-ester series.
- Characterization using broadband dielectric spectroscopy.
- Analysis of structure-property relationships.
Main Results:
- DGEDP-esters demonstrate mechanical properties comparable to DGEBA.
- DGEDP-propyl exhibited the highest dielectric constant among the synthesized esters, similar to DGEBA.
- Dielectric properties are influenced by molecular motions, free volume, and steric hindrance.
Conclusions:
- DGEDP-esters are viable bio-based alternatives to DGEBA for dielectric applications.
- DGEDP-propyl shows particular promise due to its high dielectric constant.
- Understanding molecular dynamics is key to optimizing bio-based dielectric materials.
Keywords:
bio-basedbroadband dielectric spectroscopy (BDS)diglycidyl ether of bisphenol A (DGEBA)diphenolate estersepoxy resinstructural dielectricMore Related Videos
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