New crosslinked cast films based on poly(vinyl alcohol): Preparation and physico-chemical properties

Birck, Cécile; Degoutin, Stéphanie; Tabary, Nicolas; Gaucher, Valérie; Bacquet, Maryse

doi:10.3144/expresspolymlett.2014.95

Cited by 89 publications

(82 citation statements)

References 25 publications

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“…Compared to pure PVA, however, the intensity of each peak is slightly decreased in the PVA/PAA 20% blend film. This indicates that the amount of eluted PVA is reduced due to crosslinking between the PVA and PAA …”

Section: Resultsmentioning

confidence: 95%

“…The blend films with 1% and 5% PAA contents exhibit the highest thermal stability, as shown in Table . All the blend samples show higher thermal stability than pure PVA; thus, the introduction of PAA into PVA is an effective way to improve its thermal stability …”

Section: Resultsmentioning

confidence: 99%

“…For the blends, the tensile strength increases with increasing PAA content, whereas the elongation at break decreases. Related to the crosslinking and strong intermolecular interactions between PVA and PAA, the polymer chains become more tightly packed and increasingly rigid with increasing PAA content . Therefore, the blend films exhibit decreased ductility and become brittle as a result of the extensive crosslinking …”

Section: Resultsmentioning

confidence: 99%

“…To characterize the chemical structure of the PVA/PAA blend films, FTIR spectra were recorded on a Spectrum 65 FTIR spectrometer (Perkin Elmer Co. Ltd, Waltham, MA, USA) from 4000 to 400 cm −1 in the attenuated total reflectance (ATR) mode and all graph was shifted y‐axis to identify the peak. 1 H NMR was used to check for the presence of unreacted reagents in the blend films . Each film was immersed in water for 4 days with agitation.…”

Section: Methodsmentioning

confidence: 99%

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Enhanced oxygen-barrier and water-resistance properties of poly(vinyl alcohol) blended with poly(acrylic acid) for packaging applications

2016

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To enhance the oxygen-barrier and water-resistance properties of poly(vinyl alcohol) (PVA) and expand its food packaging applicability, five crosslinked poly(vinyl alcohol)/poly(acrylic acid) (PVA/PAA) blend films were prepared via esterification reactions between hydroxyl groups in PVA and carboxylic acid groups in PAA. The physical characteristics of the blends, including the thermal, barrier, mechanical and optical properties, were investigated as a function of PAA ratio. With increasing PAA content, the crosslinking density was significantly increased, resulting in changes in the chemical structure, morphology and crystallinity of the films. The oxygen transmission rate of pure PVA decreased from 5.91 to 1.59 cc m −1 day −1 with increasing PAA ratio. The water resistance, too, increased remarkably. All the blend films showed good optical transparency. The physical properties of the blend films were strongly correlated with the chemical structure and morphology changes, which varied with the PAA content.

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Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Enhanced oxygen-barrier and water-resistance properties of poly(vinyl alcohol) blended with poly(acrylic acid) for packaging applications

2016

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“…Thus, when using this pathway, some properties can be sacrificed 1 . On the other hand, a PVOH layer can be deposited via the solution form by drop casting 5 , spin coating 6 , or electrospinning 7 . However, these methods have a number of limitations in terms of the waste of unwanted material.…”

Section: Introductionmentioning

confidence: 99%

Inkjet-printed Polyvinyl Alcohol Multilayers

Salaoru

Zhou

Morris

et al. 2017

JoVE

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Inkjet printing is a modern method for polymer processing, and in this work, we demonstrate that this technology is capable of producing polyvinyl alcohol (PVOH) multilayer structures. A polyvinyl alcohol aqueous solution was formulated. The intrinsic properties of the ink, such as surface tension, viscosity, pH, and time stability, were investigated. The PVOH-based ink was a neutral solution (pH 6.7) with a surface tension of 39.3 mN/m and a viscosity of 7.5 cP. The ink displayed pseudoplastic (non-Newtonian shear thinning) behavior at low shear rates, and overall, it demonstrated good time stability. The wettability of the ink on different substrates was investigated, and glass was identified as the most suitable substrate in this particular case. A proprietary 3D inkjet printer was employed to manufacture polymer multilayer structures. The morphology, surface profile, and thickness uniformity of inkjet-printed multilayers were evaluated via optical microscopy.

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Preparation and characterization study on maleic acid cross‐linked poly(vinyl alcohol)/chitin/nanocellulose composites

Mok

Chee

Osman

et al. 2020

J of Applied Polymer Sci

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In the quest on improving composite formulations for environmental sustainability, maleic acid (MA) cross‐linked poly(vinyl alcohol) (PVA)‐α‐chitin composites reinforced by oil palm empty fruit bunch fibers (OPEFB)‐derived nanocellulose crystals (NCC) had been successfully prepared. Based on the Fourier transform infrared (FTIR) spectroscopic analysis, it was proven that molecular interactions of the cross‐linker to the polymeric networks was through conjugated ester linkage. Differential scanning calorimetry (DSC) showed that the influence of MA was minimal toward crystallization in the PVA/chitin/NCC composite. Maximum tensile strength, elongation at break and Young's modulus of the respective PVA/chitin/NCC composites were achieved at different content of MA, dependent on the PVA/chitin mass ratio. Among all compositions, a maximum Young's modulus was achieved at 30 wt% MA loading in PVA/chitin‐30/NCC, amounting to 2,413.81 ± 167.36 MPa. Moreover, the mechanical properties and selected physicochemical properties (swelling, gel content, and contact angle) of the PVA/chitin/NCC composites could be tailored by varying the chitin content (10–30 wt%) and MA content (10–50 wt% based on total mass of composite). In brief, this chemically cross‐linked PVA‐based biocomposites formulated with sustainable resources exhibited tunable physicochemical and mechanical properties.

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New crosslinked cast films based on poly(vinyl alcohol): Preparation and physico-chemical properties

Cited by 89 publications

References 25 publications

Enhanced oxygen-barrier and water-resistance properties of poly(vinyl alcohol) blended with poly(acrylic acid) for packaging applications

Enhanced oxygen-barrier and water-resistance properties of poly(vinyl alcohol) blended with poly(acrylic acid) for packaging applications

Inkjet-printed Polyvinyl Alcohol Multilayers

Preparation and characterization study on maleic acid cross‐linked poly(vinyl alcohol)/chitin/nanocellulose composites

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