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Cellulose-based multifunctional materials with robust hydrophobic, antibacterial, and antioxidant properties through dynamic cross-linked network structures.
Int J Biol Macromol
January 2025
Key Lab of Paper Science and Technology of Ministry of Elucation, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China; State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China. Electronic address:
Environmental pollution and health problems caused by traditional non-degradable fossil-based plastics are significant concerns, rendering green and renewable bio-based materials, such as cellulose and C-Priamine (1074), as attractive substitutes. In particular, the low plasticity of cellulose can be optimized using soft alkyl chains. Herein, multifunctional cellulose-based materials were constructed via covalent adaptable networks using the Schiff base reaction of oxidized microcrystalline cellulose with varying aldehyde (dialdehyde cellulose (DAC)) contents and C-Priamine (1074).
View Article and Find Full Text PDFGroundwater flowpath characteristics drive variability in per- and polyfluoroalkyl substances (PFAS) loading across a stream-wetland system.
Sci Total Environ
January 2025
US Geological Survey, New England Water Science Center, Northborough, MA, USA.
Groundwater-dependent ecosystems in areas with industrial land use are at risk of exposure to a PFAS chemicals. We investigated one such system with several known PFAS source areas, where high and low permeability sediments (glacial) coupled with groundwater-lake and groundwater/surface-water interactions created complex 'source to seep' dynamics. Using heat-tracing and chemical methods, numerous preferential groundwater discharge zones were identified and sampled across the upper Quashnet River stream-wetland system in Mashpee, MA, USA, downgradient of Joint Base Cape Cod (JBCC).
View Article and Find Full Text PDFDevelopment and Characterization of Hyaluronic Acid Graft-Modified Polydopamine Nanoparticles for Antibacterial Studies.
Polymers (Basel)
January 2025
School of Biomedical Engineering and Imaging, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China.
The problem of antibiotic abuse and drug resistance is becoming increasingly serious. In recent years, polydopamine (PDA) nanoparticles have been recognized as a potential antimicrobial material for photothermal therapy (PTT) due to their excellent photothermal conversion efficiency and unique antimicrobial ability. PDA is capable of rapidly converting light energy into heat energy under near-infrared (NIR) light irradiation to kill bacteria efficiently.
View Article and Find Full Text PDFEffect of Thermal Treatment on the Extraction and Antioxidant and Antiglycation Activities of (Poly)phenols from .
Molecules
January 2025
Department of Food Biofunctionality (140b), Institute of Nutritional Sciences, University of Hohenheim, D-70599 Stuttgart, Germany.
Phenolic compounds have antiglycation activity, but the changes occurring during thermal treatment (TT) in these activities are not completely understood. The effects of the extraction conditions of (poly)phenols from fruits, before and after TT, on their antioxidant and antiglycation effects were assessed. (Poly)phenol-enriched extracts (PEEs) from raw and TT (90 °C, 1 h) were extracted using three solvent mixtures (ethanol/water/acetic acid) with increasing water content (0, 24, and 49%) and three solvent-to-solid ratios (5, 10, and 20 mL/g).
View Article and Find Full Text PDFGrowth of Oxide and Nitride Layers on Titanium Foil and Their Electrochemical Properties.
Materials (Basel)
January 2025
Department of Chemistry, Yeungnam University, 280 Daehak-ro, Gyeongsan 38541, Republic of Korea.
The surface of titanium foil can be modified by heating in the air, in a N flow, and in an NH flow. Upon heating in the air, the elemental Ti gradually transforms to TiO at 550 °C and to rutile TiO at above 700 °C. Treatment in a N flow leads similarly to TiO at 600 °C and TiO at 700 °C, although the overall reaction is slower.
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