Preparation and properties of poly(vinyl alcohol)/vinyltrimethoxysilane (PVA/VTMS) hybrid films with enhanced thermal stability and oxygen barrier properties

Lim, Mijin; Kim, Dowan; Seo, Jongchul; Han, Haksoo

doi:10.1007/s13233-014-2146-2

Cited by 29 publications

(17 citation statements)

References 22 publications

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“…23 An example of a trifunctional crosslinker for this purpose is vinyltrimethoxysilane (VTMS) [H 2 C=CHSi(OCH 3 ) 3 ], which also features a vinyl group (−CH=CH 2 ) in its structure that can be used to perform free radical polymerization. 24,25 Various organic functional groups can be incorporated into a material to be used in copper removal, such as the carboxyl, 26 hydroxyl, 27 amine, 28 2 ] is a hydrophilic monomer with ester and tertiary amine groups in its structure, along with a vinyl function allowing its polymerization. According to the literature, DMAEMA-containing materials exhibit high efficiency when applied to the removal of heavy metals from aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

Poly(dimethylsiloxane) and Poly[vinyltrimethoxysilane-co-2-(dimethylamino) ethyl methacrylate] Based Cross-Linked Organic-Inorganic Hybrid Adsorbent for Copper(II) Removal from Aqueous Solutions

Silva¹,

Chagas-Silva²,

Florenzano³

et al. 2016

Journal of the Brazilian Chemical Society

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An organic-inorganic hybrid adsorbent was prepared and its application for the uptake of Cu II ions from aqueous solutions was studied. The polymer network was composed of poly(dimethylsiloxane) (PDMS), vinyltrimethoxysilane (VTMS), and 2-(dimethylamino)ethyl methacrylate (DMAEMA), described as PDMS-net-P(VTMS-co-DMAEMA). The chemical groups, thermal stability and morphology of this hybrid adsorbent were characterized using techniques of attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). In adsorption studies, saturation of the active sites of the material was observed at pH 5, after 3 days, with each gram of material capable of adsorbing 0.48 mmol of copper(II). The fractionary-order and Sips models provided the best fits to the experimental data in kinetic and equilibrium studies of the adsorption process, respectively. Moreover, an acceptable reusability was found for this cross-linked organic-inorganic hybrid adsorbent after usage-regeneration cycles without significantly losing its original activity.

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Section: Introductionmentioning

confidence: 99%

Poly(dimethylsiloxane) and Poly[vinyltrimethoxysilane-co-2-(dimethylamino) ethyl methacrylate] Based Cross-Linked Organic-Inorganic Hybrid Adsorbent for Copper(II) Removal from Aqueous Solutions

Silva¹,

Chagas-Silva²,

Florenzano³

et al. 2016

Journal of the Brazilian Chemical Society

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“…. The pure PVA film shows several characteristic diffraction peaks in the range 10° − 60°; one sharp diffraction peak is observed for the (110) reflection at 2 θ = 19.6° and slight indications are seen at 2 θ = 11.3°, 21.6° and 40.7°, which can be assigned to the (100), (200) and (220) reflections, respectively . These results indicate that the pure PVA film is a semicrystalline polymer.…”

Section: Resultsmentioning

confidence: 72%

“…Figure shows the FTIR spectra of pure PVA and the PVA/PAA blend films with different PAA contents. Pure PVA exhibits characteristic absorption peaks at 3000–3600 cm −1 and 2850–2950 cm −1 , which may be attributed to –OH and –CH 2 – stretching vibrations, respectively …”

Section: Resultsmentioning

confidence: 99%

“…The network structure formed between PVA and PAA will prevent the formation of crystalline regions in the PVA matrix, leading to a decrease in the degree of crystallinity in the PVA . Meanwhile, the crosslinking will induce new quasi‐crystalline phases and a relatively compact structure in the blend films, apparently represented by the decreased intermolecular distance.…”

Section: Resultsmentioning

confidence: 99%

“…The OTR was measured at 23 °C and 0% relative humidity. The water‐resistance pressure (mm) tests of the PVA/PAA blend films were carried out according to a conventional method . Film samples were cut into discs with diameters of 30 mm and then used to seal the mouth of a long round graduated tube (tube diameter 8 mm).…”

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

Self Cite

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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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Exudate‐Induced Gelatinizable Nanofiber Membrane with High Exudate Absorption and Super Bactericidal Capacity for Bacteria‐Infected Wound Management

Wang,

Yu,

Shao

et al. 2023

Adv Healthcare Materials

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Invasion of bacteria and continuous oozing of exudate are significant causes of interference with the healing of infected wounds. Therefore, an exudate‐induced gelatinizable and near‐infrared (NIR)‐responsive nanofiber membrane composed of polyvinyl alcohol (PVA), carboxymethyl chitosan (CMC), and Fe‐doped phosphomolybdic acid (Fe‐PMA) with exceptional exudate absorption capacity and potent bactericidal efficacy is developed and denoted as the PVA‐FP‐CMC membrane. After absorbing exudate, the fiber membrane can transform into a hydrogel membrane, forming coordination bonds between the Fe‐PMA and CMC. The unique exudate‐induced gelation process imparts the membrane with high exudate absorption and retention capability, and the formed hydrogel also traps the bacteria that thrive in the exudate. Moreover, it is discovered for the first time that the Fe‐PMA exhibits an enhanced photothermal conversion capability and photocatalytic activity compared to the PMA. Therefore, the presence of Fe‐PMA provides the membrane with a photothermal and photodynamic therapeutic effect for killing bacteria. The PVA‐FP‐CMC membrane is proven with a liquid absorption ratio of 520.7%, a light‐heat conversion efficiency of 41.9%, high‐level generation of hydroxyl radical (•OH) and singlet oxygen (1O2), and a bacterial killing ratio of 100% for S. aureus and 99.6% for E. coli. The treatment of infected wounds on the backs of rats further confirms the promotion of wound healing by the PVA‐FP‐CMC membrane with NIR irradiation. Overall, this novel functional dressing for the synergistic management of bacteria‐infected wounds presents a promising therapeutic strategy for tissue repair and regeneration.

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Preparation and properties of poly(vinyl alcohol)/vinyltrimethoxysilane (PVA/VTMS) hybrid films with enhanced thermal stability and oxygen barrier properties

Cited by 29 publications

References 22 publications

Poly(dimethylsiloxane) and Poly[vinyltrimethoxysilane-co-2-(dimethylamino) ethyl methacrylate] Based Cross-Linked Organic-Inorganic Hybrid Adsorbent for Copper(II) Removal from Aqueous Solutions

Poly(dimethylsiloxane) and Poly[vinyltrimethoxysilane-co-2-(dimethylamino) ethyl methacrylate] Based Cross-Linked Organic-Inorganic Hybrid Adsorbent for Copper(II) Removal from Aqueous Solutions

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

Exudate‐Induced Gelatinizable Nanofiber Membrane with High Exudate Absorption and Super Bactericidal Capacity for Bacteria‐Infected Wound Management

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