Results 21 to 30 of about 100,855 (336)

A Review on Porous Polymeric Membrane Preparation. Part II: Production Techniques with Polyethylene, Polydimethylsiloxane, Polypropylene, Polyimide, and Polytetrafluoroethylene

Polymers, 2019
The development of porous polymeric membranes is an important area of application in separation technology. This article summarizes the development of porous polymers from the perspectives of materials and methods for membrane production.
Xuemei Tan, D. Rodrigue
semanticscholar   +1 more source

Unified throughout‐pore microstructure enables ultrahigh separator porosity for robust high‐flux lithium batteries

Electron, 2023
With small thickness, commercial polyolefin separators own low porosity to ensure sufficient thermomechanical properties, resulting in tortuous and enlarged Li+ diffusion pathways that induce large overpotentials and detrimental dendrite growth.
Dongjiang Chen, Yuanpeng Liu, Chao Feng, Yuhui He, Shengyu Zhou, Botao Yuan, Yunfa Dong, Haodong Xie, Guangfeng Zeng, Jiecai Han, Weidong He   +10 more
doaj   +1 more source

Development of Poly-Naphthalene Sulphonate Based Concrete Admixture [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2023
In this research, Poly-Naphthalene Sulphonate (PNS) properties and working in concrete are enhanced to get the required workability and high strength of 10000psi.
Nadia Khan, Asim Mushtaq, Rafiq Ahmed, Raza Khan, Zaeem Ali   +4 more
doaj   +1 more source

Evaluation of the Mechanism of the Gold Cluster Growth during Heating of the Composite Gold-Polytetrafluoroethylene Thin Film

Nanomaterials, 2012
Nanocomposite films consisting of gold inclusions in the polytetrafluoroethylene (PTFE) matrix were obtained by thermal vacuum deposition. Annealing of the obtained films with different temperatures was used to measure varying of film morphologies.
Sigurd Schrader, Galyna Strilchuk, Valeri Lozovski, Konstantin Grytsenko   +3 more
doaj   +1 more source

Long-term outcomes of omniflow II biosynthetic vascular graft in lower extremity arterial revascularization [PDF]

, 2018
Background: This study aims to evaluate the patency rates and long-term outcomes of femoro-popliteal bypass procedures with Omniflow II biosynthetic vascular grafts in patients with occlusive vascular disease.
Göncü, M.T., Toktaş, F., Yavuz, Ş., Çayır, Mustafa Çağdaş, Özsin, K.K.   +4 more
core   +1 more source

XPS and FTIR Studies of Polytetrafluoroethylene Thin Films Obtained by Physical Methods

Polymers, 2019
Two methods—attenuated total reflection Fourier infrared spectroscopy (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS)—have been used to analyze the chemical structure of polytetrafluorethylene (PTFE) thin coatings deposited by pulsed laser (PLD ...
J. Piwowarczyk, R. Jȩdrzejewski, D. Moszyński, K. Kwiatkowski, A. Niemczyk, J. Baranowska   +5 more
semanticscholar   +1 more source

Role of Staphylococcus epidermidis Virulence Factors in Adhesion to Intravascular Cannulae [PDF]

Journal of Clinical and Diagnostic Research, 2020
Introduction: The adhesion of bacteria to implanted devices in the human body is a major risk factor that can affect the long-term success of these devices. Staphylococcus epidermidis (S. epidermidis) have few virulence factors which have been identified
Ghadah S Abusalim, Arunachalam Chinnathambi, Altaf H Shah, Hesham Saleh Almoallim, Sulaiman Ali Alharbi   +4 more
doaj   +1 more source

Surface modification of hydrophobic polymers for improvement of endothelial cell-surface interactions [PDF]

, 1992
The aim of this study is to improve the interaction of endothelial cells with polymers used in vascular prostheses. Polytetrafluoroethylene (PTFE; Teflon) films were treated by means of nitrogen and oxygen plasmas.
A Dekker, AD Callow, C Willems, D Klee, G Plate, JA Chinn, JD Andrade, K Berger, KJ Pratt, MB Herring, PB Wachem Van, PB Wachem Van, PB Wachem Van, PB Wachem Van, RA Wagenen Van, RA Wagenen Van, WH Pearce   +16 more
core   +2 more sources

Coating stability of different esthetic NiTi archwires under high fluoride exposure [PDF]

Journal of Dental Materials and Techniques
Methods: Ninety 0.016-inch esthetic nickel-titanium (NiTi) archwires were divided into three groups based on the type of coating (n=30): Group 1, rhodium-coated; Group 2, Teflon-coated; and Group 3, epoxy-coated.
Jeevana Poovalingam, Rajesh RNG, Rony Tomy Kondody, Anadha Gujar   +3 more
doaj   +1 more source

Dyeable Hydrophilic Surface Modification for PTFE Substrates by Surface Fluorination

Membranes, 2023
Polytetrafluoroethylene (PTFE) is the most widely used fluoropolymer that has various functionalities such as heat resistance, chemical resistance, abrasion resistance, and non-adhesiveness.
Mizuki Kobayashi, Fumihiro Nishimura, Jae-Ho Kim, Susumu Yonezawa   +3 more
doaj   +1 more source