Thermoplastic starch (TPS)-based composite films for wastewater treatment: synthesis and fundamental characterization

被引:4
|
作者
Abas, Khadiga Mohamed [1 ]
Attia, Amina Abdel Meguid [1 ]
机构
[1] Natl Res Ctr, Lab Surface Chem & Catalysis, 33 El Bohouth St, Giza 12622, Egypt
关键词
Thermoplastic starch; Starch citrate; Cellulose nanocrystals; Crystal violet; Adsorption; CITRIC-ACID; CELLULOSE NANOCRYSTALS; SINGLE-COMPONENT; CORN STARCH; METAL-IONS; GREEN; DYES; ADSORPTION; REMOVAL; ESTERIFICATION;
D O I
10.1186/s13065-023-00998-z
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Modification of starch is a potential basic research aiming to improve its water barrier properties. The general purpose of this study is to manufacture cross-linked iodinated starch citrate (ISC) with a degree of substitution (DS) & AP; 0.1 by modifying native corn starch with citric acid in the presence of iodine as an oxidizing agent. Thermoplastic starch (TPS) was generated with urea as a plasticizer and blended with various concentrations of ISC of (2, 4, 6%) (wt/wt) to obtain (UTPS/ISC2, UTPS/ISC4, and UTPS/ISC6). Nanocomposite film was formed from UTPS/ISC2 in presence of stabilized iodinated cellulose nanocrystals UTPS/ISC2/SICNCs via gelatinization at a temperature of 80oC. Water solubility and water vapor release were studied amongst the water barrier features. The fabricated starch-based composite films were evaluated utilizing Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electronic Microscope analysis (SEM), surface area, and tensile measurements. The adsorption of crystal violet (CV) dye onto produced samples was examined in an aqueous solution. The findings revealed that the UTPS/ISC2/ISCNCs has 83% crystal violet elimination effectiveness. Moreover, the adsorption isotherms were assessed and figured out to vary in the order of Langmuir > Temkin > Freundlich > Dubinin-Radushkevich.
引用
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页数:16
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