Effects of silane hydrolysis time on the physicochemical properties of bioplastics based on starch and epoxidized soybean oil
Document Type
Article
Publication Date
12-1-2024
Abstract
This work investigated the effects of 3-aminopropyl triethoxy silane (APTES) hydrolysis time on the physicochemical properties of the resulting starch/epoxidized soybean oil (ESO) bioplastics comprehensively. FTIR analysis confirmed that APTES hydrolyzed for 4 h had the best modification effect on starch. The results of XRD and TGA demonstrated the successful silylation of starch by APTES despite hydrolysis time. Silylation treatment reduced the thermal stability of starch slightly, but enhanced the thermal stability of the resultant bioplastics, revealing better interaction between silylated starch and ESO. The interfacial adhesion of starch and ESO in the bioplastics was obviously enhanced when APTES was hydrolyzed for 2-24 h. The bioplastics with APTES hydrolyzed for 2-4 h showed more desirable tensile properties as the silane hydrolysis was complete and selfcondensation of hydrolyzed silanes was avoided. The bioplastics containing silylated starch still showed superior opacity and biodegradability.
Keywords
Starch, Bioplastic, Silane hydrolysis
Divisions
sch_che,CHEMISTRY
Funders
National Natural Science Foundation of China (NSFC) (12274058),Talent Introduction Projects of Dezhou University (2022xjrc102) ; (2021xjrc313) ; (2020xjrc217),The 'Belt and Road' Innovative Talent Exchange Program for Foreign Experts (DL2023023007L)
Publication Title
Food Chemistry
Volume
460
Issue
2
Publisher
Elsevier
Publisher Location
125 London Wall, London, ENGLAND