Effect of Incorporating Cellulose Nanocrystals from Corncob on the Tensile, Thermal and Barrier Properties of Poly(Vinyl Alcohol) Nanocomposites
Joint Authors
Silvério, Hudson Alves
Flauzino Neto, Wilson Pires
Pasquini, Daniel
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-08-26
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
The effect of incorporating cellulose nanocrystals from corncob (CNC) on the tensile, thermal, and barrier properties of poly(vinyl alcohol) (PVA) nanocomposites was evaluated.
The CNC were prepared by sulfuric acid hydrolysis at 45°C for 60 minutes, using 15 mL of H2SO4 (9.17 M) for each gram of fiber.
The CNC60 presented a needle-shaped morphology, high crystallinity (83.7%), good initial degradation temperature (236°C), average length (L) of 210.8±44.2 nm, diameter (D) of 4.15±1.08 nm, and high aspect ratio (L/D) of 53.4±15.8.
PVA/CNC nanocomposite films with different filler loading levels (3, 6, and 9% by wt) were prepared by casting.
The ultimate tensile strength (UTS), thermal stability (TS), light transmittance (Tr) and water vapor permeability (Pw) of the nanocomposites were measured.
When compared to neat PVA film, the UTS of the nanocomposites improved significantly, by 140.2%, Pw decreased up to 28.73%, and there were no significant changes in TS.
The nanocomposites also showed excellent Tr in the visible region, maintaining substantially equivalent transparency.
These improvements in the nanocomposites' properties suggest a close association between filler and matrix, besides indicating that the CNC were well dispersed and adherent to the polymer matrix.
American Psychological Association (APA)
Silvério, Hudson Alves& Flauzino Neto, Wilson Pires& Pasquini, Daniel. 2013. Effect of Incorporating Cellulose Nanocrystals from Corncob on the Tensile, Thermal and Barrier Properties of Poly(Vinyl Alcohol) Nanocomposites. Journal of Nanomaterials،Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-1007493
Modern Language Association (MLA)
Silvério, Hudson Alves…[et al.]. Effect of Incorporating Cellulose Nanocrystals from Corncob on the Tensile, Thermal and Barrier Properties of Poly(Vinyl Alcohol) Nanocomposites. Journal of Nanomaterials No. 2013 (2013), pp.1-9.
https://search.emarefa.net/detail/BIM-1007493
American Medical Association (AMA)
Silvério, Hudson Alves& Flauzino Neto, Wilson Pires& Pasquini, Daniel. Effect of Incorporating Cellulose Nanocrystals from Corncob on the Tensile, Thermal and Barrier Properties of Poly(Vinyl Alcohol) Nanocomposites. Journal of Nanomaterials. 2013. Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-1007493
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1007493