期刊
PARTICULATE SCIENCE AND TECHNOLOGY
卷 40, 期 5, 页码 521-530出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/02726351.2021.1967536
关键词
Starch; magnetite; nanobiocomposites; characterization
资金
- Ege University Scientific Research Project Unit Project [FYL-2020-22227]
The study achieved green synthesis and characterization of starch-functionalized magnetic nanoparticles, showing the impact of different starch concentrations on the magnetic nanocomposites. Various analytical techniques were used for characterization and comparison of the synthesized products.
The present study enabled green synthesis and characterization of starch-functionalized magnetic nanoparticles to be released by the chemical co-precipitation of magnetite phase from aqueous solution in a different type of polymeric starch matrix (corn and wheat). To examine the structural changes which would occur when preparing starch-functionalized magnetic nanocomposites, the parameters which affect the synthesis such as starch type, the concentration of the precipitating agent, and aging time were studied. SEM/EDX, TEM, XRD, FTIR, VSM, and zeta potential measurements were employed to characterize and compare the as-synthesized products. The calculations based on the XRD results showed that magnetic starch nanocomposites had well-defined nanocomposite structures and average sizes of approximately 4.55 +/- 1.2 nm and 3.78 +/- 1.2 nm, respectively. Furthermore, the size varies from 7.95 +/- 1.2 nm to 4.55 +/- 1.2 nm and 6.91 +/- 1.2 nm to 3.78 +/- 1.2 nm by changing starch concentration from 0.05% to 2% for wheat and corn starches, respectively. The BET surface area of starch-stabilized magnetite nanobiocomposites for MW_S3 and MC_S3 were found to be 126.20 and 151.29 m(2)/g, respectively. The TEM and SEM results indicated that the spherical nanoparticles were dispersed into the polymer matrix. VSM results of pure-Fe3O4 (44.63 emu/g) is higher than those of MW_S3 (41.20 emu/g) and MC_S3 (39.88 emu/g) based on starch functionalization.
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