Search

ABSTRACT Bone diseases and injuries pose a significant global health challenge. Traditional bone regeneration methods face limitations, such as tissue availability and immune rejection. This study presents plasma technology's potential in scaffold engineering for bone regeneration through bibliometric analysis and experimental findings. Plasmas modify surfaces and enhance scaffold properties. These modifications are crucial for effective bone healing. Our bibliometric analysis identifies key trends and collaborations in plasma technology research. The analysis reveals a strong correlation between surface modification, plasma treatment, and applications in tissue engineering and biomaterials, underscoring the need for detailed investigations into plasma applications. By linking bibliometric trends with experimental research, this article emphasizes the novel role of plasma technology in current and future bone regeneration strategies. [ABSTRACT FROM AUTHOR]

Bioplastics offer biodegradability and reduced environmental impact but often use nondegradable synthetic dyes. This study introduces a novel application of glow discharge plasma (GDP) technology to modify cassava starch‐based bioplastic sheets, specifically optimizing conditions to enhance their hydrophilicity and adhesion for natural dyes. This research systematically tailors plasma treatment parameters to maximize the interaction between bioplastics and eco‐friendly natural dyes. Optimal conditions, identified as 30 W for 3 min using oxygen, air, and nitrogen plasma treatments, demonstrate significant advancement in sustainable material development. Analyses (ATR‐FTIR, EDX, XPS) showed increased concentration of polar functional groups and oxygen content, with FE‐SEM and water contact angle measurements revealing improved surface roughness and wettability, respectively. Oxygen plasma treatment yielded the highest hydrophilicity and crystallinity of the polymer. Tensile tests indicated increased strength and decreased elongation. UV‐Vis spectroscopy confirmed enhanced dye retention and reduced leaching. This study demonstrates GDP's potential to incorporate eco‐friendly natural dyes into bioplastics, thereby contributing to the development of more sustainable materials. [ABSTRACT FROM AUTHOR]

This study examines the enhancement of starch‐based bioplastic sheets for immobilizing natural dyes (ND) using plasma processes. The effects of poly(vinyl alcohol) (PVA) as a binder for ND were also assessed. Starch substrates were treated with air plasma, air plus 1,7‐octadiene (OD) plasma, and air plus 2‐methy‐2‐oxazoline (Ox) plasma before immobilizing curcumin and telang NDs, followed by an OD overcoating. Surface morphology, wettability, chemical composition, tensile strength, and surface charge were analyzed. Results showed improved wettability and dye immobilization, particularly for telang with a PVA binder and plasma treatment. OD overcoating prevented dye leaching. Air plasma reduced, while OD plasma maintained the starch's negative charge. XPS analysis indicated increased oxygen and nitrogen presence after air plasma and enhanced aliphatic carbon from OD overcoating. Tensile strength was largely unaffected, but elongation at break was reduced, especially after air and OD plasma treatment. [ABSTRACT FROM AUTHOR]

Long‐term stability of hydrophilic surface coatings that prevent fouling, cell adhesion and present a lubricious interface for biomaterials has been widely investigated in recent years. As an alternative to the gold standard poly(ethylene glycol) (PEG), poly(2‐oxazoline)‐based coatings are promising due to their higher stability against oxidative degradation in comparison to PEG. In this study, we compare the antifouling and tribological properties of PEG and poly(2‐methyl‐2‐oxazoline) (PMOXA) brush structures as a function of structural design parameters such as grafting density, chain length, and the monomer solubility. Brush properties such as hydration (number of H2O molecules per monomer), shear modulus, and serum adsorption as a function of design parameters were estimated using optical waveguide lightmode spectroscopy and quartz crystal microbalance/dissipation techniques. At high monomer surface densities, PMOXA showed approximately three times higher structurally associated H2O molecules per monomer in comparison to PEG brushes, leading to stiffer PMOXA brushes. We found that the chain stiffening of PMOXA brushes lead to higher macroscopic coefficients of friction; however presented similar adsorbed serum mass (high antifouling properties) when compared to PEG brushes. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47659. [ABSTRACT FROM AUTHOR]