Research Progress of Polyvinyl Alcohol Water-Resistant Film Materials

Liu, Baodong; Zhang, Jianhua; Guo, Hongge

doi:10.3390/membranes12030347

Cited by 82 publications

(51 citation statements)

References 94 publications

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“…Through Fourier-transform infrared spectroscopy (FTIR), a polymeric film was obtained from E0_1 by the casting method. Furthermore, the composition E0_2 was obtained after mixing the E0_1 composition at 35 °C for 3 h with glutaraldehyde (GTA) [ 104 ]. A film that was 164 µm thick was prepared by the casting method to be used for the FTIR investigations.…”

Section: Methodsmentioning

confidence: 99%

Essential Oils as Antimicrobial Active Substances in Wound Dressings

et al. 2022

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Wound dressings for skin lesions, such as bedsores or pressure ulcers, are widely used for many patients, both during hospitalization and in subsequent treatment at home. To improve the treatment and shorten the healing time and, therefore, the cost, numerous types of wound dressings have been developed by manufacturers. Considering certain inconveniences related to the intolerance of some patients to antibiotics and the antimicrobial, antioxidant, and curative properties of certain essential oils, we conducted research by incorporating these oils, based on polyvinyl alcohol/ polyvinyl pyrrolidone (PVA/PVP) biopolymers, into dressings. The objective of this study was to study the potential of a polymeric matrix for wound healing, with polyvinyl alcohol as the main material and polyvinyl pyrrolidone and hydroxypropyl methylcellulose (HPMC) as secondary materials, together with additives (plasticizers poly(ethylene glycol) (PEG) and glycerol), stabilizers (Zn stearate), antioxidants (vitamin A and vitamin E), and four types of essential oils (fennel, peppermint, pine, and thyme essential oils). For all the studied samples, the combining compatibility, antimicrobial, and cytotoxicity properties were investigated. The obtained results demonstrated a uniform morphology for almost all the samples and adequate barrier properties for contact with suppurating wounds. The results show that the obtained samples containing essential oils have a good inhibitory effect on, or antimicrobial properties against, Staphylococcus aureus ATCC 25923, Enterococcus faecalis ATCC 29212, Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 27853, and Candida albicans ATCC 10231. The MTT assay showed that the tested samples were not toxic and did not lead to cell death. The results showed that the essential oils used provide an effective solution as active substances in wound dressings.

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Section: Methodsmentioning

confidence: 99%

Essential Oils as Antimicrobial Active Substances in Wound Dressings

et al. 2022

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“…This phenomenon is largely attributed to the difference in the molecular structures of the two polymers. The gelatin has a long chain of amino acids vulnerable to hydrogen bonding by water molecules, whereas the smaller and more compact secondary alcohol structure ( ) in PVA is better for resisting such water bonding [51].…”

Section: Mtt Assaymentioning

confidence: 99%

Fabrication of Gelatin Nanofibers by Electrospinning—Mixture of Gelatin and Polyvinyl Alcohol

Chang

et al. 2022

Polymers

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Gelatin, one of the most abundant, naturally derived biomacromolecules from collagen, is widely applicable in food additives, cosmetic ingredients, drug formulation, and wound dressing based on their non-toxicity and biodegradability. In parallel, polyvinyl alcohol (PVA), a synthetic polymer, has been commonly applied as a thickening agent for coating processes in aqueous systems and a major component in healthcare products for cartilage replacements, eye lubrication, and contact lenses. In this study, a new type of mixed hydrogel nanofiber was fabricated from gelatin and polyvinyl alcohol by electrospinning under a feasible range of polymer compositions. To determine the optimal composition of gelatin and polyvinyl alcohol in nanofiber fabrication, several key physicochemical properties of mixed polymer solutions such as viscosity, surface tension, pH, and electrical conductance were thoroughly characterized by a viscometer, surface tensiometer, water analyzer, and carbon electron probe. Moreover, the molecular structures of polymeric chains within mixed hydrogel nanofibers were investigated with Fourier-transform infrared spectroscopy. The morphologies and surface elemental compositions of the mixed hydrogel nanofibers were examined by the scanning electron microscope and energy-dispersive X-ray spectroscopy, respectively. The measurement of water contact angles was performed for measuring the hydrophilicity of nanofiber surfaces. Most importantly, the potential cytotoxicity of the electrospun nanofibers was evaluated by the in vitro culture of 3T3 fibroblasts. Through our extensive study, it was found that a PVA-rich solution (a volumetric ratio of gelatin/polyvinyl alcohol <1) would be superior for the efficient production of mixed hydrogel nanofibers by electrospinning techniques. This result is due to the appropriate balance between the higher viscosity (~420–~4300 10−2 poise) and slightly lower surface tension (~35.12–~32.68 mN/m2) of the mixed polymer solution. The regression on the viscosity data also found a good fit by the Lederer–Rougier’s model for a binary mixture. For the hydrophilicity of nanofibers, the numerical analysis estimates that the value of interfacial energy for the water contact on nanofibers is around ~−0.028 to ~−0.059 J/m2.

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“…Polyvinyl alcohol (PVA) is a water-soluble polymer with a carbon chain as the main chain and a large number of hydroxyl groups on the side chain [ 54 , 55 ]. It is non-toxic, easily processed, biodegradable, has good mechanical properties [ 56 , 57 ], and can be mixed with natural polymeric materials such as polysaccharides and proteins to improve its properties [ 58 , 59 , 60 ].…”

Section: Degradation Mechanism Of Degradable Packaging Film Materialsmentioning

confidence: 99%

Progress in the Degradability of Biodegradable Film Materials for Packaging

Guo

2022

Membranes

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In today’s world, the problem of “white pollution” is becoming more and more serious, and many countries have paid special attention to this problem, and it has become one of the most important tasks to reduce polymer waste and to protect the environment. Due to the degradability, safety, economy and practicality of biodegradable packaging film materials, biodegradable packaging film materials have become a major trend in the packaging industry to replace traditional packaging film materials, provided that the packaging performance requirements are met. This paper reviews the degradation mechanisms and performance characteristics of biodegradable packaging film materials, such as photodegradation, hydrodegradation, thermo-oxidative degradation and biodegradation, focuses on the research progress of the modification of biodegradable packaging film materials, and summarizes some challenges and bottlenecks of current biodegradable packaging film materials.

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Research Progress of Polyvinyl Alcohol Water-Resistant Film Materials

Cited by 82 publications

References 94 publications

Essential Oils as Antimicrobial Active Substances in Wound Dressings

Essential Oils as Antimicrobial Active Substances in Wound Dressings

Fabrication of Gelatin Nanofibers by Electrospinning—Mixture of Gelatin and Polyvinyl Alcohol

Progress in the Degradability of Biodegradable Film Materials for Packaging

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