Fully bio-based hydroxy ester vitrimer synthesized by crosslinking epoxidized soybean oil with doubly esterified starch. (15th February 2023)

• Record Type: Journal Article
• Authors: Li, Chang; Ju, Benzhi; Zhang, Shufen
• Is Part Of: Carbohydrate polymers. Volume 302(2023)
• Publication Date: 2023-02-15
• Subjects: Epoxidized soybean oil -- Modified starch -- Hydroxyester dynamic covalent bond -- Biomass -- Vitrimer; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2022.120442
• Languages: English
• ISSNs: 0144-8617

Abstract

Abstract: Catalyst-free fully bio-based hydroxyester (BHE) vitrimers were synthesized by crosslinking and plasticizing epoxidized soybean oil with synthesized acetylated starch succinate monoesters to investigate the effects of different starch structures on the properties of the BHE vitrimers. The BHE vitrimers possessed a lower glass transition temperature as well as better solvent resistance and reprocessing performance compared to traditional starch-based materials. Owing to dynamically covalent bonds, the migration and exudation of plasticizers were avoided. A maximum strain of 230 % was achieved to prevent the retrogradation and brittleness of starch-based materials. Furthermore, the mechanical properties remained unchanged after three reprocessing cycles. Consequently, the obtained BHE vitrimers are eco-friendly and sustainable. Graphical abstract: Unlabelled Image