Surface changes of biopolymers PHB and PLLA induced by Ar+ plasma treatment and wet etching

Kasálková, Nikola Slepičková; Slepička, Petr; Sajdl, Petr; Švorčı́k, Václav

doi:10.1016/j.nimb.2014.02.031

Cited by 15 publications

(4 citation statements)

References 17 publications

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“…ZnO nanoparticles were selected as an affordable and safe solution for food packaging, ZnO being recognized as safe by the U.S. Food and Drug Administration [36]. Earlier works have reported on the effect of low-pressure plasma treatment in the modification of PHB by grafting, polymerization or functionalization for biomedical applications [39,40,41,42,43]. Low-pressure plasma treatments were mostly used to improve the surface hydrophilicity of PHB/PHBV films for enhancing cell compatibility [44,45,46,47,48,49,50,51,52].…”

Section: Introductionmentioning

confidence: 99%

Poly(3-hydroxybutyrate) Modified by Nanocellulose and Plasma Treatment for Packaging Applications

et al. 2018

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In this work, a new eco-friendly method for the treatment of poly(3-hydroxybutyrate) (PHB) as a candidate for food packaging applications is proposed. Poly(3-hydroxybutyrate) was modified by bacterial cellulose nanofibers (BC) using a melt compounding technique and by plasma treatment or zinc oxide (ZnO) nanoparticle plasma coating for better properties and antibacterial activity. Plasma treatment preserved the thermal stability, crystallinity and melting behavior of PHB‒BC nanocomposites, regardless of the amount of BC nanofibers. However, a remarkable increase of stiffness and strength and an increase of the antibacterial activity were noted. After the plasma treatment, the storage modulus of PHB having 2 wt % BC increases by 19% at room temperature and by 43% at 100 °C. The tensile strength increases as well by 21%. In addition, plasma treatment also inhibits the growth of Staphylococcus aureus and Escherichia coli by 44% and 63%, respectively. The ZnO plasma coating led to important changes in the thermal and mechanical behavior of PHB‒BC nanocomposite as well as in the surface structure and morphology. Strong chemical bonding of the metal nanoparticles on PHB surface following ZnO plasma coating was highlighted by infrared spectroscopy. Moreover, the presence of a continuous layer of self-aggregated ZnO nanoparticles was demonstrated by scanning electron microscopy, ZnO plasma treatment completely inhibiting growth of Staphylococcus aureus. A plasma-treated PHB‒BC nanocomposite is proposed as a green solution for the food packaging industry.

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Section: Introductionmentioning

confidence: 99%

Poly(3-hydroxybutyrate) Modified by Nanocellulose and Plasma Treatment for Packaging Applications

et al. 2018

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“…The effect of low-pressure plasma treatment in the surface modification of PHB by polymerization, grafting, or functionalization in medical fields, such as increasing cell adhesion and proliferation for scaffolding, was early documented. − Indeed, low-pressure plasma treatments were mainly exploited to enhance cell compatibility − by improving the surface hydrophilicity of PHB/PHBV films. However, low-pressure plasma processes have limitations due to the complicated installations and high costs inherent to vacuum technology …”

Section: Pbat: Poly(butylene Adipate-co-terephthalate) Fabrication Ap...mentioning

confidence: 99%

Recent Development of Polyhydroxyalkanoates (PHA)-Based Materials for Antibacterial Applications: A Review

Ladhari

Boisvert

et al. 2023

ACS Appl. Bio Mater.

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The diseases caused by microorganisms are innumerable existing on this planet. Nevertheless, increasing antimicrobial resistance has become an urgent global challenge. Thus, in recent decades, bactericidal materials have been considered promising candidates to combat bacterial pathogens. Recently, polyhydroxyalkanoates (PHAs) have been used as green and biodegradable materials in various promising alternative applications, especially in healthcare for antiviral or antiviral purposes. However, it lacks a systematic review of the recent application of this emerging material for antibacterial applications. Therefore, the ultimate goal of this review is to provide a critical review of the state of the art recent development of PHA biopolymers in terms of cutting-edge production technologies as well as promising application fields. In addition, special attention was given to collecting scientific information on antibacterial agents that can potentially be incorporated into PHA materials for biological and durable antimicrobial protection. Furthermore, the current research gaps are declared, and future research perspectives are proposed to better understand the properties of these biopolymers as well as their possible applications.

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“…In addition, it is important in the correction of further analyses. Based on experience from our previous experiments, where the samples were modified by plasma discharge, we assumed that the samples would age no more than 20 days after the modification [35,57].…”

Section: Surface Wettabilitymentioning

confidence: 99%

Plasma-Activated Polyvinyl Alcohol Foils for Cell Growth

et al. 2020

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Hydrogels, and not only natural polysaccharide hydrogels, are substances capable of absorbing large amounts of water and physiological fluids. In this study, we set out to optimize the process for preparing polyvinyl alcohol (PVA) hydrogels. Subsequently, we doped PVA foils with cellulose powder, with poly(ethylene glycol) (PEG) or with gold nanoparticles in PEG colloid solutions (Au). The foils were then modified in a plasma discharge to improve their biocompatibility. The properties of PVA foils were studied by various analytical methods. The use of a suitable dopant can significantly affect the surface wettability, the roughness, the morphology and the mechanical properties of the material. Plasma treatment of PVA leads to ultraviolet light-induced crosslinking and decreasing water absorption. At the same time, this treatment significantly improves the cytocompatibility of the polymer, which is manifested by enhanced growth of human adipose-derived stem cells. This positive effect on the cell behavior was most pronounced on PVA foils doped with PEG or with Au. This modification of PVA therefore seems to be most suitable for the use of this polymer as a cell carrier for tissue engineering, wound healing and other regenerative applications.

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Surface changes of biopolymers PHB and PLLA induced by Ar+ plasma treatment and wet etching

Cited by 15 publications

References 17 publications

Poly(3-hydroxybutyrate) Modified by Nanocellulose and Plasma Treatment for Packaging Applications

Poly(3-hydroxybutyrate) Modified by Nanocellulose and Plasma Treatment for Packaging Applications

Recent Development of Polyhydroxyalkanoates (PHA)-Based Materials for Antibacterial Applications: A Review

Plasma-Activated Polyvinyl Alcohol Foils for Cell Growth

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