Preparation and Characterization of Modified Cellulose Fiber-Reinforced Polyvinyl Alcohol/Polypyrrolidone Hybrid Film Composites

Laxmeshwar, Sandeep S.; Viveka, S.; Kumar, Dheeraj; Dinesha,; Bhajanthri, R. F.; Nagaraja, G. K.

doi:10.1080/10601325.2012.697001

Cited by 10 publications

(3 citation statements)

References 27 publications

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“…Table 4 shows the OP and WVP values of the investigated films, revealing that the OP of pure PVA film (0.12 ± 0.04 cm 2 ·m −2 ·atm −1 ·day −1 ·MPa) increased upon the introduction of CS, e.g., PVA/CS 2 wt.% and PVA/CS 2.5 wt.% featured OPs of 0.15 ± 0.07 and 0.16 ± 0.08 cm 2 ·m −2 ·atm −1 ·day −1 ·MPa −1 , respectively. This finding is attributed to the decreased crystallinity of films with low CS content [34]. At CS contents above 3 Wt.%, OP rapidly increased with increasing CS content, and the corresponding films consequently exhibited the worst oxygen barrier properties.…”

Section: Resultsmentioning

confidence: 99%

Effect of Sonication Duration in the Performance of Polyvinyl Alcohol/Chitosan Bilayer Films and Their Effect on Strawberry Preservation

et al. 2019

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In this study, we fabricated polyvinyl alcohol (PVA)/chitosan (CS) bilayer films by casting and investigated the effects of preparation conditions and CS content (2, 2.5, or 3 wt.%) on the ability of these films to preserve packaged strawberries. The best performance was achieved at a CS loading of 2.5 wt.% (ultrasound time, 25 min); the strain and stress values were 143.15 ± 6.43% and 70.67 ± 0.85 MPa, respectively, oxygen permeability was 0.16 ± 0.08 cm2·m2·day−1·MPa−1, water vapor permeability was 14.93 ± 4.09 g·cm−1·s−1·Pa−1, and the shelf life of fresh strawberries packaged in the PVA/CS 2.5 wt.% bilayer film was determined to be 21 days at 5 ± 2 °C and a relative humidity of 60 ± 5%. Treatment with PVA/CS bilayer films prevented the decrease in the firmness of strawberries during storage (21 days). The evaluated physicochemical parameters (weight loss, decay, firmness, titratable acidity, soluble solid content, ascorbic acid content, and color) indicated that treatment with PVA/CS bilayer films led to better maintenance of the fruit quality. We believe that our study makes a significant contribution to literature because it paves the way to the fabrication of smart packaging materials and facilitates the commercialization of fresh strawberries as an important health food.

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Section: Resultsmentioning

confidence: 99%

Effect of Sonication Duration in the Performance of Polyvinyl Alcohol/Chitosan Bilayer Films and Their Effect on Strawberry Preservation

et al. 2019

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“…The OPs of PVA/CH-2 and PVA/CH-2.5 increase slightly, from 0.15 ± 0.07 to 0.16 ± 0.08 cm 2 m −2 atm −1 day −1 MPa. This can be attributed to the lower crystallinities of the blended films with low CH concentrations [26]. The OPs increase rapidly with the CH content when the latter is over 30 wt %, resulting in blend films with poorer oxygen barrier properties.…”

Section: Oxygen Permeability and Water Vapor Permeabilitymentioning

confidence: 98%

Fabrication and Testing of PVA/Chitosan Bilayer Films for Strawberry Packaging

et al. 2017

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Strawberry packaging based on four different chitosan-poly(vinylalcohol) blend films with chitosan contents of 0 wt %, 20 wt %, 25 wt %, and 30 wt % was tested. The samples were stored at 18 ± 2 • C and 60% ± 5% relative humidity for six days. Strawberry quality was evaluated during and after storage. Strawberries packaged using these films showed significant differences in weight loss and firmness, decay percentage, titratable acidity, total soluble solids, and ascorbic acid content when compared to non-packaged strawberries. The 25 wt % bilayer film showed the best performance in terms of delaying changes in strawberries. The findings suggest that these 25 wt % chitosan films can used to extend strawberry shelf lives while maintaining quality levels.

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“…The reason responsible for the low degradation rate of the leather is because of the low molecular weight of the collagen molecules of the leather (WLB). While the thermal stability is due to the presence of the tanning agents present in the cellulose/WLB composite [41]. It is thus concluded the cellulose/WLB-based composite films produced in this study has a very comparable advantage and a very good thermal stability necessary for packaging application than when only cellulose is used alone.…”

Section: Thermoravimetric Analysismentioning

confidence: 71%

Production, Properties and Applications of Cellulose/Waste Leather Buff Composite (WLB) for Environmental Sustainability and Recyclability

Alhaji¹,

Oparah²,

Yakubu³

et al. 2021

JCSN

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This work aimed to utilize waste leather buff (WLB) as a packing filler in cellulose to produce degradable composite. Imidazolium-based ionic liquids was used to dissolve the cellulose and WLB in a coagulation bath and the resultant homogenous solution formed was casted in a clean glass plate to form cellulose/WLB composite film, washed in deionized water and dried in a desiccator. The composite film was characterised by FT-IR, SEM and thermogravimetric analysis. The modulus of elasticity and tensile strength properties of the composite film were lower than those obtained from cellulose matrix alone. There is also high thermal stability of composite film due to the cross-linkage between the collagen protein in the leather fibres of the WLB. The fractography of the composite film indicated that a good interfacial bond exists between the films, hence the composite film has been used as a wrapper/packaging application for environmental sustainability and material recyclability. Keywords: Fibre; Fibre/matrix bond; Recycling; Thermal analysis, Climate Change

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Preparation and Characterization of Modified Cellulose Fiber-Reinforced Polyvinyl Alcohol/Polypyrrolidone Hybrid Film Composites

Cited by 10 publications

References 27 publications

Effect of Sonication Duration in the Performance of Polyvinyl Alcohol/Chitosan Bilayer Films and Their Effect on Strawberry Preservation

Effect of Sonication Duration in the Performance of Polyvinyl Alcohol/Chitosan Bilayer Films and Their Effect on Strawberry Preservation

Fabrication and Testing of PVA/Chitosan Bilayer Films for Strawberry Packaging

Production, Properties and Applications of Cellulose/Waste Leather Buff Composite (WLB) for Environmental Sustainability and Recyclability

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