Yang, Jianlei and Xu, Shicai and Chee, Ching Yern and Ching, Kuan Yong and Wei, Yunwei and Wang, Rui and Al-Hada, Naif Mohammed and Hock, Chuah Cheng (2024) Influence of starch silylation on the structures and properties of starch/epoxidized soybean oil-based bioplastics. International Journal of Biological Macromolecules, 258. ISSN 0141-8130, DOI https://doi.org/10.1016/j.ijbiomac.2023.129037.
Full text not available from this repository.Abstract
The present work systematically investigated the influence of starch silylation on the structures and properties of starch/epoxidized soybean oil-based bioplastics. Silylated starch was synthesized using starch particles (SP-ST) or gelatinized starch (SG-ST) under different silane hydrolysis pHs. Due to the appearance of -NH2 groups and lower O–H wavenumbers, SP-ST obtained at pH 5 showed higher silylation degree and stronger hydrogen bond interaction with epoxidized soybean oils (ESO) than that at pH 11. The morphology analysis revealed better interfacial compatibility of ESO and SP-ST. The tensile strength of the samples containing SP-ST increased by 51.91 than the control, emphasizing the enhanced interaction within the bioplastics. However, tensile strength of the bioplastics with SG-ST decreased by 59.56 due to their high moisture contents from unreacted silanes. Additionally, the bioplastics with SG-ST exhibited an obvious reduction of thermal stability and an increase in water solubility because of the presence of unreacted APMS. The bioplastic degradation was not prevented by starch silylation except high pH. The bioplastics showed the most desirable tensile properties, thermal stability, and water solubility when starch was surface-modified with silanes hydrolyzed at pH 5. These outcomes made the fabricated bioplastics strong candidates for petroleum-based plastics for packaging applications. © 2023 Elsevier B.V.
| Item Type: | Article |
|---|---|
| Funders: | Universiti Malaya [Grant no. ST001-2023, ST078-2022], Dezhou University [Grant no. 2022xjrc102] |
| Uncontrolled Keywords: | Bioplastic; Epoxidized soybean oils; Starch |
| Subjects: | Q Science > QD Chemistry T Technology > TP Chemical technology |
| Divisions: | Faculty of Science > Department of Chemistry |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 06 Jul 2024 03:09 |
| Last Modified: | 06 Jul 2024 03:09 |
| URI: | http://eprints.um.edu.my/id/eprint/44813 |
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