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Preparation and characterization of thermoplastic starch and cellulose nanofibers as green nanocomposites: Extrusion processing.
Int J Biol Macromol. 2018 Jun; 112:442-447.IJ

Abstract

This research was aimed at studying the preparation of thermoplastic starch (TPS) from cornstarch flour using twin screw extrusion. Also, the effects of the addition of cellulose nanofibers (CNFs) as reinforcement, on TPS nanocomposite films properties were evaluated. Nanocomposites with 0.5, 1.0 and 1.5wt% of CNFs content were prepared. The chemical structure of starch, TPS and TPS/CNFs were characterized by Fourier-transform infrared spectroscopy (FT-IR) and X-ray diffraction. The mechanical properties, morphological structure, and thermal stability of neat thermoplastic starch and their nanocomposites were investigated by scanning electron microscopy (SEM), dynamic mechanical thermal analysis (DMTA), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and water absorption (WA) test. Results showed that it was possible to improve the WA, thermal, and mechanical properties of TPS with the addition of CNFs due to its good dispersion and the interaction of CNFs with the TPS matrix. The storage modulus, loss modulus, and the tan δ peak position of TPS/CNF nanocomposites improved in comparison with the TPS matrix. These findings confirmed the enhancement of mechanical properties of TPS/CNF nanocomposites. In addition, TGA and DSC results showed that increasing CNF content improves the thermal stability of TPS-based nanocomposites. SEM images showed that CNFs dispersion within the TPS matrix was uniform and the surfaces of TPS/CNF films were smooth. The WA of the TPS/CNF composites moderately decreased with the addition of CNFs. Finally, the results obtained clearly showed the advantages of reinforcing TPS with CNFs, a natural, cheap and abundant green nanocomposite.

Authors+Show Affiliations

Department of Wood Engineering and Technology, Gorgan University of Agricultural Sciences & Natural Resources, Gorgan, Iran.Department of Wood Engineering and Technology, Gorgan University of Agricultural Sciences & Natural Resources, Gorgan, Iran.Department of Chemical Technologies, Iranian Research Organization for Science and Technology (IROST), P.O. Box 33535111, Tehran, Iran. Electronic address: ashori@irost.ir.School of Chemistry, University College of Science, University of Tehran, Tehran, Iran.Department of Wood Engineering and Technology, Gorgan University of Agricultural Sciences & Natural Resources, Gorgan, Iran.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29410268

Citation

Ghanbari, Abbas, et al. "Preparation and Characterization of Thermoplastic Starch and Cellulose Nanofibers as Green Nanocomposites: Extrusion Processing." International Journal of Biological Macromolecules, vol. 112, 2018, pp. 442-447.
Ghanbari A, Tabarsa T, Ashori A, et al. Preparation and characterization of thermoplastic starch and cellulose nanofibers as green nanocomposites: Extrusion processing. Int J Biol Macromol. 2018;112:442-447.
Ghanbari, A., Tabarsa, T., Ashori, A., Shakeri, A., & Mashkour, M. (2018). Preparation and characterization of thermoplastic starch and cellulose nanofibers as green nanocomposites: Extrusion processing. International Journal of Biological Macromolecules, 112, 442-447. https://doi.org/10.1016/j.ijbiomac.2018.02.007
Ghanbari A, et al. Preparation and Characterization of Thermoplastic Starch and Cellulose Nanofibers as Green Nanocomposites: Extrusion Processing. Int J Biol Macromol. 2018;112:442-447. PubMed PMID: 29410268.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Preparation and characterization of thermoplastic starch and cellulose nanofibers as green nanocomposites: Extrusion processing. AU - Ghanbari,Abbas, AU - Tabarsa,Taghi, AU - Ashori,Alireza, AU - Shakeri,Alireza, AU - Mashkour,Mahdi, Y1 - 2018/02/02/ PY - 2017/12/12/received PY - 2018/01/23/revised PY - 2018/02/01/accepted PY - 2018/2/8/pubmed PY - 2018/9/14/medline PY - 2018/2/8/entrez KW - Cellulose nanofibers KW - Nanocomposite KW - Thermogravimetric analysis KW - Thermoplastic starch SP - 442 EP - 447 JF - International journal of biological macromolecules JO - Int J Biol Macromol VL - 112 N2 - This research was aimed at studying the preparation of thermoplastic starch (TPS) from cornstarch flour using twin screw extrusion. Also, the effects of the addition of cellulose nanofibers (CNFs) as reinforcement, on TPS nanocomposite films properties were evaluated. Nanocomposites with 0.5, 1.0 and 1.5wt% of CNFs content were prepared. The chemical structure of starch, TPS and TPS/CNFs were characterized by Fourier-transform infrared spectroscopy (FT-IR) and X-ray diffraction. The mechanical properties, morphological structure, and thermal stability of neat thermoplastic starch and their nanocomposites were investigated by scanning electron microscopy (SEM), dynamic mechanical thermal analysis (DMTA), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and water absorption (WA) test. Results showed that it was possible to improve the WA, thermal, and mechanical properties of TPS with the addition of CNFs due to its good dispersion and the interaction of CNFs with the TPS matrix. The storage modulus, loss modulus, and the tan δ peak position of TPS/CNF nanocomposites improved in comparison with the TPS matrix. These findings confirmed the enhancement of mechanical properties of TPS/CNF nanocomposites. In addition, TGA and DSC results showed that increasing CNF content improves the thermal stability of TPS-based nanocomposites. SEM images showed that CNFs dispersion within the TPS matrix was uniform and the surfaces of TPS/CNF films were smooth. The WA of the TPS/CNF composites moderately decreased with the addition of CNFs. Finally, the results obtained clearly showed the advantages of reinforcing TPS with CNFs, a natural, cheap and abundant green nanocomposite. SN - 1879-0003 UR - https://www.unboundmedicine.com/medline/citation/29410268/Preparation_and_characterization_of_thermoplastic_starch_and_cellulose_nanofibers_as_green_nanocomposites:_Extrusion_processing_ DB - PRIME DP - Unbound Medicine ER -