About this Materials Science article
Biobased Epoxy Nanocomposites Composed of Sorbitol Polyglycidyl Ether, Biobased Carboxylic Acids and Microfibrillated Cellulose by Kaito Sugane; Tomoyuki Mishima; Mitsuhiro Shibata is a Materials Science article available to read on EtoBox.
Sorbitol polyglycidyl ether (SPE) was cured with citric acid (CA), tartaric acid (TA), maleic acid (MA) and itaconic acid (IA) as biobased di-and tricarboxylic acids in the presence or absence of microfibrillated cellulose (MFC) to produce biobased epoxy nanocomposites or cured epoxy resins, respectively. For the curing systems of SPE/IA, the crosslinking of unsaturated C = C bonds in the IA units were investigated by the addition of potassium persulfate (KPS) as an aqueous radical initiator. The FT-IR spectral analysis revealed that the curing reaction of epoxy and carboxy groups smoothly proceeded for all the cured resins and nanocomposites, and unsaturated C = C bonds of IA were crosslinked by use of KPS. The addition of KPS in the SPE/IA curing system was effective to improve the glass transition temperature (T g ) and tensile properties. SPE-IA-KPS exhibited the highest T g , tensile strength and tensile modulus (62.8 °C, 15.4 MPa and 1.08 GPa) among all the cured resins. The tensile properties of all the cured resins were effectively improved by the addition of MFC. Although the tan δ peak temperatures (59-62 °C) of SPE-IA-KPS and SPE-IA-KPS/MFC nanocomposites were almost no
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- Author
- Kaito Sugane; Tomoyuki Mishima; Mitsuhiro Shibata
- Publisher
- Springer Science and Business Media LLC
- Published
- 2021
- Language
- EN
- Field
- Materials Science (Physical Sciences)