All carbohydrate-based nanocomposites composed of sorbitol polyglycidyl ether, aminated trehalose and cellulose nanofiber

Koki Sugai; Kaito Sugane; Naozumi Teramoto; Mitsuhiro Shibata

doi:10.1016/j.carbpol.2019.115779

All carbohydrate-based nanocomposites composed of sorbitol polyglycidyl ether, aminated trehalose and cellulose nanofiber

Carbohydr Polym. 2020 Mar 15:232:115779. doi: 10.1016/j.carbpol.2019.115779. Epub 2019 Dec 25.

Authors

Koki Sugai¹, Kaito Sugane¹, Naozumi Teramoto¹, Mitsuhiro Shibata²

Affiliations

¹ Department of Life and Environmental Sciences, Faculty of Engineering, Chiba Institute of Technology, Japan.
² Department of Life and Environmental Sciences, Faculty of Engineering, Chiba Institute of Technology, Japan. Electronic address: mitsuhiro.shibata@p.chibakoudai.jp.

PMID: 31952588
DOI: 10.1016/j.carbpol.2019.115779

Abstract

Renewable resources-derived nanocomposites are receiving extensive attention because of increasing environmental concern and restricted availability of petrochemical resources. The thiol-ene reaction of cysteamine hydrochloride and allyl-etherified trehaloses (AxTs) with allyl functionalities of x = 6 and 8 produced aminated trehaloses (NxTs). Sorbitol polyglycidyl ether (SPE) was cured with NxTs in the presence or absence of cellulose nanofibers (CNFs) to give all carbohydrate-based nanocomposites (SPE-NxT/CNFs) or cured resins (SPE-NxTs). The α-dispersion temperature (T_α) of SPE-N6T was higher than that of SPE-N8T. The T_α for SPE-N6T/CNFs was lowered with increasing CNF content over the range of 0-5 phr, and shifted from lowering to rising at 10 phr. The T_α for SPE-N8T/CNFs was not lowered with increasing CNF content, and SPE-N8T/CNF 10 phr exhibited the highest T_α among SPE-N8T/CNFs 0-10 phr. The tensile strength and modulus of SPE-N6T/CNF 10 phr were the highest among all the samples, which were much higher than those of SPE-N6T.

Keywords: Aminated trehalose; Bio-based epoxy resin; Cellulose nanofiber; Nanocomposites; Thermal and mechanical properties; Thiol-ene reaction.