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Structural and morphological evaluation of CNC reinforced PVA/Starch biodegradable films.
Int J Biol Macromol. 2018 Sep; 116:385-393.IJ

Abstract

Nanocomposite films containing cellulose nanocrystals (CNC), as the reinforcing phase, and poly(vinyl alcohol) (PVA)/starch (S) blend, as the matrix, were prepared by solution casting technique. For the preparation, 5, 10, 15 wt% CNC suspension were incorporated in blends containing 90 wt% PVA/10 wt% S, 75 wt% PVA/25 wt% S and 50 wt% PVA/50 wt% S. Structural evaluation was done by Fourier transform infrared spectrometry and X-ray diffraction, and the morphological aspects by atomic force microscopy. Infrared spectroscopy evidenced the presence of H-bond interactions between the PVA and S and between PVA/S blend and CNC, and also variation in the conformational rearrangement, while the X-ray diffraction showed that the crystallite size and the degree of crystallinity were strongly affected by blending of PVA with S and also by the incorporation of CNC in the nanocomposite films. The surface roughness of studied samples increased with the increasing of S and filler content.

Authors+Show Affiliations

"Petru Poni" Institute of Macromolecular Chemistry, Iasi, Romania. Electronic address: cpopescu@icmpp.ro."Petru Poni" Institute of Macromolecular Chemistry, Iasi, Romania."Al. I. Cuza" University, Faculty of Chemistry, Iasi, Romania."Petru Poni" Institute of Macromolecular Chemistry, Iasi, Romania.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29751040

Citation

Popescu, Maria-Cristina, et al. "Structural and Morphological Evaluation of CNC Reinforced PVA/Starch Biodegradable Films." International Journal of Biological Macromolecules, vol. 116, 2018, pp. 385-393.
Popescu MC, Dogaru BI, Goanta M, et al. Structural and morphological evaluation of CNC reinforced PVA/Starch biodegradable films. Int J Biol Macromol. 2018;116:385-393.
Popescu, M. C., Dogaru, B. I., Goanta, M., & Timpu, D. (2018). Structural and morphological evaluation of CNC reinforced PVA/Starch biodegradable films. International Journal of Biological Macromolecules, 116, 385-393. https://doi.org/10.1016/j.ijbiomac.2018.05.036
Popescu MC, et al. Structural and Morphological Evaluation of CNC Reinforced PVA/Starch Biodegradable Films. Int J Biol Macromol. 2018;116:385-393. PubMed PMID: 29751040.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Structural and morphological evaluation of CNC reinforced PVA/Starch biodegradable films. AU - Popescu,Maria-Cristina, AU - Dogaru,Bianca-Ioana, AU - Goanta,Mirela, AU - Timpu,Daniel, Y1 - 2018/05/08/ PY - 2017/09/28/received PY - 2018/05/07/revised PY - 2018/05/08/accepted PY - 2018/5/12/pubmed PY - 2018/10/26/medline PY - 2018/5/12/entrez KW - Cellulose nanocrystals (CNC) KW - H-bond interaction KW - Poly(vinyl alcohol) (PVA) KW - Starch (S) KW - Surface roughness SP - 385 EP - 393 JF - International journal of biological macromolecules JO - Int J Biol Macromol VL - 116 N2 - Nanocomposite films containing cellulose nanocrystals (CNC), as the reinforcing phase, and poly(vinyl alcohol) (PVA)/starch (S) blend, as the matrix, were prepared by solution casting technique. For the preparation, 5, 10, 15 wt% CNC suspension were incorporated in blends containing 90 wt% PVA/10 wt% S, 75 wt% PVA/25 wt% S and 50 wt% PVA/50 wt% S. Structural evaluation was done by Fourier transform infrared spectrometry and X-ray diffraction, and the morphological aspects by atomic force microscopy. Infrared spectroscopy evidenced the presence of H-bond interactions between the PVA and S and between PVA/S blend and CNC, and also variation in the conformational rearrangement, while the X-ray diffraction showed that the crystallite size and the degree of crystallinity were strongly affected by blending of PVA with S and also by the incorporation of CNC in the nanocomposite films. The surface roughness of studied samples increased with the increasing of S and filler content. SN - 1879-0003 UR - https://www.unboundmedicine.com/medline/citation/29751040/Structural_and_morphological_evaluation_of_CNC_reinforced_PVA/Starch_biodegradable_films_ DB - PRIME DP - Unbound Medicine ER -