Results 11 to 20 of about 34,194 (261)

Well-defined PE-b-PTFE diblock copolymers via combination of coordination chain transfer polymerization and condensation reaction: Facile preparation and surface modification of polyethylene film [PDF]

open access: yesPolyolefins Journal, 2017
In this paper, a series of well-defined polyethylene-b-polytetrafluoroethylene diblock copolymers (PE–b– PTFEs) were prepared by a coupling reaction of hydroxyl-terminated polyethylene (PE–OH) and isocyanateterminated 1H,1H-perfluoro-1-tetradecanol (PFDO–
Feng He   +6 more
doaj   +1 more source

Analysis of microstructural deformation in polytetrafluoroethylene under heating or stretching conditions by synchrotron X-ray scattering

open access: yesFushe yanjiu yu fushe gongyi xuebao, 2022
The analysis of microstructure deformation in polytetrafluoroethylene (PTFE) under heating or stretching conditions is essential to determine the failure mechanism.
SHA Feixiang   +3 more
doaj   +1 more source

Design of Novel POB/h-BN Co-Filled PTFE Composites with Enhanced Thermal–Mechanical Properties

open access: yesCrystals, 2021
Polytetrafluoroethylene (PTFE) is provided with excellent self-lubricating properties and corrosion resistance. However, the lower thermal resistance greatly limits its high-temperature applications.
Yu Wang   +9 more
doaj   +1 more source

Medium-term results of transcatheter implantation of MedLab-CT aortic valve prosthesis

open access: yesРоссийский кардиологический журнал, 2019
Aim. To assess the clinical and hemodynamic results of transcatheter aortic valve replacement with the MedLab-CT prosthesis.Material and methods. MedLab-CT is the first Russian transcatheter implantable cardiac valve prosthesis.
V. V. Bazylev   +2 more
doaj   +1 more source

A Complication of Diaphragm Repair Using a Gore-Tex (Expanded Polytetrafluorethylene) Membrane: A Case Report

open access: yesJournal of Chest Surgery, 2022
A 65-year-old man underwent right trisectionectomy of the liver and reconstruction of the chest wall and diaphragm with a 2-mm Gore-Tex membrane due to recurrent hepatocellular carcinoma.
Seungwook Lee   +4 more
doaj   +1 more source

The effect of ultrasonic vibrations with superimposed low-frequency modulation on the mechanical, tribological properties and structure of a multicomponent polymer composite [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2023
One of the tasks of polymer materials science is to study the possibilities of improving the complex of elastic-strength characteristics and tribological properties of polymer composite materials by improving the manufacturing technology. In this paper,
D. A. Negrov   +3 more
doaj   +1 more source

Protective applications of vacuum-deposited perfluoropolymer films

open access: yesSemiconductor Physics, Quantum Electronics & Optoelectronics, 2016
The paper summarizes in brief applications of perfluoropolymer thin films deposited from the gas phase by several different methods, for protection of various materials and devices both at the research stage and already in industry.
K.P. Grytsenko
doaj   +1 more source

Prótese vascular derivada do látex Latex-derived vascular prosthesis

open access: yesJornal Vascular Brasileiro, 2007
CONTEXTO: O desenvolvimento de prótese vascular tem sido vital para os avanços e realizações da cirurgia vascular reconstrutora durante as últimas 5 décadas.
Marcelo Luiz Brandão   +5 more
doaj   +1 more source

Freeze-dried multiscale porous nanofibrous three dimensional scaffolds for bone regenerations [PDF]

open access: yesBioImpacts, 2020
Introduction: Simulating hydrophobic-hydrophilic composite face with hierarchical porous and fibrous architectures of bone extracellular matrix (ECM) is a key aspect in bone tissue engineering.
Maryam Sadat Khoramgah   +6 more
doaj   +1 more source

Molecular Dynamics Calculation on the Adhesive Interaction Between the Polytetrafluoroethylene Transfer Film and Iron Surface

open access: yesFrontiers in Chemistry, 2021
During the friction process, the polytetrafluoroethylene (PTFE) adhered on the counterpart surface was known as the PTFE transfer film, which was fundamental to the lubricating performance of the PTFE.
Zhen Zuo   +7 more
doaj   +1 more source

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