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Facile Fabrication of Binary-Structured Fibrous Membranes with Antifouling and Flame-Retardant Properties for Durable Water/Oil Separation.
ACS Appl Mater Interfaces
January 2025
College of Textiles, Donghua University, Shanghai 201620, China.
Membrane fouling from dispersed droplets during water/oil separation undermines performance and limits long-term use. Additionally, there is an urgent need for flame-retardant fibrous membranes capable of purifying high-temperature polluted oils. Inspired by the binary structure of taro leaves, this study introduces a novel fibrous membrane with both antifouling and flame-retardant properties for water/oil treatment.
View Article and Find Full Text PDFSynthesis of waterborne polyurethane-carboxymethyl chitosan cross-linked biodegradable bio-based porous materials for the adsorption of methylene blue.
Int J Biol Macromol
January 2025
State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China; Faculty of Light Industry, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
The development of green and cost-effective biomass adsorbents is necessary for removing large amounts of dyes from wastewater. In this study, polyurethane prepolymers were synthesized using polycaprolactone diol (OH-PCL-OH), isophorone diisocyanate, and 2,2-dihydroxymethylpropionic acid, which were subsequently dispersed in aqueous carboxymethyl chitosan (CMCS) solution to produce waterborne polyurethane (WPU)-CMCS porous materials. The adsorbent was characterized by scanning electron microscopy (SEM), Fourier transform infrared spectrometer (FT-IR), thermogravimetric (TGA) and mercury intrusion porosimetry (MIP).
View Article and Find Full Text PDFInternal Breast Lift: A New Method for Performing Internal Mastopexy.
Plast Reconstr Surg Glob Open
January 2025
Instituto Médico Cervantes, São Paulo, Brazil.
Background: Mastopexy combined with implant placement is a complex cosmetic surgery due to the dual nature of the procedure. Various mammoplasty techniques and implant types add to its intricacy. This study aimed to evaluate the effectiveness of an internal breast lift in correcting pseudoptosis, grade 1 breast ptosis, and asymmetries, thereby offering a safer alternative with reduced morbidity and avoiding the creation of an inverted T scar.
View Article and Find Full Text PDFHighly efficient removal of per- and polyfluoroalkyl substances by extrusion-regenerated aminated polyurethane sponges.
Water Res
January 2025
State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China.
Per- and polyfluoroalkyl substances (PFAS) are a class of persistent organic compounds widely detected in the environments. Due to their chemical stability, physical adsorption has emerged as one of the most promising techniques for remediating PFAS-containing wastewater, while some newly synthesized functional absorbents in powder form suffer from separation issues. Inspired by mussel biology, we have successfully synthesized a porous spongy absorbent termed aminated polyurethane (PU-PDA-PANI) with over 99.
View Article and Find Full Text PDFMicroplastics in Cuban freshwaters: Diversity, temporal changes, and effects on extracellular enzymatic activity.
Environ Pollut
January 2025
Universidad de Alcalá, Departamento de Química Analítica, Química Física e Ingeniería Química, Ctra. Madrid-Barcelona Km. 33.600, Madrid, 28871, Alcalá de Henares, Spain.
Plastics, as synthetic polymers, are emerging contaminants that can harm organisms and ecosystems. This study investigates the presence of microplastics in sediments of two rivers in western Cuba, assessing their temporal variability, diversity, and characterizing the types of microplastics in these ecosystems. Additionally, the study examines the relationship between microplastic concentrations, the extracellular enzymatic activity of benthic microbial communities, and nutrient levels in sediments.
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