Effect of nanocellulose isolation techniques on the formation of reinforced poly(vinyl alcohol) nanocomposite films
By Y. Zhou, S. Fu, L. M. Zheng, H. Zhan. 2012
221 citations recorded by the source corpus.
Three techniques including acid hydrolysis (AH), 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated oxidation (TMO) and ultrasonication (US) were introduced to isolate nanocellulose from microcrystalline cellulose, in order to reinforce poly(vinyl alcohol) (PVA) films. Important differences were noticed in fiber quality of nanocellulose and film properties of PVA nanocomposite films. The TMO treatment was more efficient in nanocellulose isolation with higher aspect ratio, surface charge (–47 mV) and yields (37%). While AH treatment resulted in higher crystallinity index (88.1%) and better size dispersion. The fracture surface, thermal behavior and mechanical properties of the PVA nanocomposite films were investigated by means of scanning electron microscopy (SEM), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and tensile testing. The results showed that both the TMO-derived and AH-derived nanocellulose could be dispersed homogeneously in the PVA matrices. AH/PVA films had higher elongation at break (51.59% at 6 wt% nanocellulose loading) as compared with TMO/PVA, while TMO/PVA films shown superior tensile modulus and strength with increments of 21.5% and 10.2% at 6wt% nanocellulose loading. The thermal behavior of the PVA nanocomposite films was higher improved with TMO-derived nanofibrils addition.
Subfields: Biomaterials
View Paper: https://www.semanticscholar.org/paper/f38c5944eb945dad3a660fbaa7ffe4cf76567797
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In Biomaterials
- Kristiina Oksman
- A. Dufresne
- Mehdi Jonoobi
- Y. Davoudpour
- S. Sapuan
- N. M. Nurazzi
- Reza Oladi
- R. Davoodi
Citations in the corpus
- Effect of ultrasonication duration of polyvinyl alcohol (PVA) gel on characterizations of PVA film (2020, background): “these beach marks on the surface of PVA based film after addition of nanocellulose [22].”
- Thermal properties of treated sugar palm yarn/glass fiber reinforced unsaturated polyester hybrid composites (2020, background): “This may further reduce the decomposition temperature due to non-limited mobility [68].”
- Different preparation methods and properties of nanostructured cellulose from various natural resources and residues: a review (2015, methodology): “In another study, three methods, namely TEMPO oxidation, ultrasonic treatment and acid hydrolysis, were compared to produce nanocellulose from MCC (Zhou et al. 2012).”