Study on the properties of ethylenebisformamide plasticized corn starch (EPTPS) with various original water contents of corn starch

• Published in: Carbohydrate polymers Vol. 69; no. 2; pp. 256 - 261
• Main Authors: Yang, Jin-Hui, Yu, Jiu-Gao, Feng, Yan, Ma, Xiao-Fei
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.06.2007; Elsevier Science
• Subjects: Applied sciences; Biodegradable; biodegradable products; corn starch; crystal structure; Ethylenebisformamide; Exact sciences and technology; glass transition temperature; mechanical properties; Natural polymers; Physicochemistry of polymers; plasticizers; retrogradation; Starch; Starch and polysaccharides; thermal analysis; TPS; water; water content; Biodegradable; Ethylenebisformamide; Starch; TPS; Mechanical properties; Crystallinity; Experimental study; Corn starch; Retrogradation; Plasticizer; Dynamic mechanical properties; Morphology; Concentration effect; Water content; Oside polymer; Carboxamide; Hydrogen bond
• ISSN: 0144-8617; 1879-1344
• DOI: 10.1016/j.carbpol.2006.10.003

EPTPSs were prepared based on various original water contents of corn starch (10%, 13%, 16% and 19%). The structure and mechanical performance of resulting TPSs were studied in detail. The hydrogen bond between plasticizer and starch was detected by FT-IR. By scanning electron microscope (SEM), native corn starch granules were proved to transfer to a continuous phase. The crystallinity and retrogradation of EPTPSs were studied by X-ray diffraction (XRD). The effect of water on the mechanical properties of EPTPSs was also tested. The effect of moisture content on the glass–rubber transition temperature ( T g) was studied using dynamic thermal mechanical analysis (DMTA). It revealed that T g of EPTPS decreased with increasing moisture content.