In this study we evaluated the biocompatibility of a modified polyurethane nanofiber membrane on a polypropylene spunbond substrate. This material was treated with plasma using diffuse coplanar surface barrier discharge, and subsequent modification was done by continuous spraying of a biologically active chitosan solution (CHIT) containing an inclusion complex of β-cyclodextrin (β-CD) encapsulating berberine (BRB). Biocompatibility was evaluated using several in vitro assays. Human dermal fibroblasts (HDFs) and 3T3 murine fibroblasts were used as biological models. The results of these assays showed that a polyurethane nanofiber membrane modified by CHIT/β-CD/BRB appears to be non-toxic and biocompatible; potentially, it could be used as a wound dressing after further testing.
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http://dx.doi.org/10.1007/s10561-016-9585-2 | DOI Listing |
Nanoscale
January 2025
School of Materials and Chemistry, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, China.
Thermoplastic polyurethane (TPU) fabrics often possess good mechanical, waterproofing, and breathability properties. However, the resistance of TPU to excessive ultraviolet (UV) irradiation is poor and often does not meet the UV resistance requirements of fabrics. Electrospun nanofibers with a side-by-side structure can combine the advantages of different materials.
View Article and Find Full Text PDFACS Nano
January 2025
CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei, Anhui 230027, PR China.
Flexible on-skin electronics present tremendous popularity in intelligent electronic skins (e-skins), healthcare monitoring, and human-machine interfaces. However, the reported e-skins can hardly provide high permeability, good stretchability, and large sensitivity and are limited in long-term stability and efficient recyclability when worn on the human body. Herein, inspired from the human skin, a permeable, stretchable, and recyclable cellulose aerogel-based electronic system is developed by sandwiching a screen-printed silver sensing layer between a biocompatible CNF/HPC/PVA (cellulose nanofiber/hydroxypropyl cellulose/poly(vinyl alcohol)) aerogel hypodermis layer and a permeable polyurethane layer as the epidermis layer.
View Article and Find Full Text PDFMembranes (Basel)
December 2024
School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China.
Triboelectric nanogenerators (TENGs) have garnered significant attention due to their high energy conversion efficiency and extensive application potential in energy harvesting and self-powered devices. Recent advancements in electrospun nanofibers, attributed to their outstanding mechanical properties and tailored surface characteristics, have meant that they can be used as a critical material for enhancing TENGs performance. This review provides a comprehensive overview of the developments in electrospun nanofiber-based TENGs.
View Article and Find Full Text PDFAdv Healthc Mater
December 2024
Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, 999077, China.
The advent of bionic skin sensors represents a significant leap forward in the realm of wearable health monitoring technologies. Existing bionic skin technologies face several limitations, including complex and expensive manufacturing processes, low wearing comfort, and challenges in achieving comfortable real-time health monitoring. These shortcomings hinder the widespread adoption and practical utility of bionic skin in various applications.
View Article and Find Full Text PDFMacromol Rapid Commun
December 2024
Department of Chemistry "Giacomo Ciamician", University of Bologna, Via Selmi 2, Bologna, 40126, Italy.
Mechanofluorescent polymers represent a promising class of materials exhibiting fluorescence changes in response to mechanical stimuli. One approach to fabricating these polymers involves incorporating aggregachromic dyes, whose emission properties are governed by the intermolecular distance, which can, in turn, be readily altered by microstructural changes in the surrounding polymer matrix during mechanical deformation. In this study, a mechanofluorescent additive featuring excimer-forming oligo(p-phenylene vinylene) dyes (tOPV) is incorporated into electrospun polyurethane fibers, producing mats of fibers with diameters ranging from 300 to 700 nm.
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