Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/194727
Type: Artigo de periódico
Title: Polypropylene Hollow Fiber Oxygenators: Effect Of The Sorption Of Perfluoropolyethers.
Author: Cassiola, F
Kiyohara, P K
Joekes, I
Abstract: The introduction of microporous polypropylene hollow fibers in recent years has brought considerable advances to blood oxygenators. However, lifetime and assembly problems are still unresolved. In this work we tried to rate the oxygen permeation velocity by turning the fibers more hydrophobic through the sorption of a perfluorocarbon. Fomblin HC/25, a perfluoropolyether, is well known for its low surface tension and high affinity for oxygen. Celgard X10, X20, and X30 commercial hollow fibers were tested. The hollow fibers showed high affinity for the perfluoropolyether; swelling was clearly shown. A new system for the measurement of oxygen permeation velocity was developed. The oxygen transport velocity was not significantly changed after sorption. The Celgard microporous hollow fibers impregnated with perfluoropolyether showed no water permeation after 2 months of use, reducing one of the most serious problems in the lifetime of these types of fibers.
Subject: Biocompatible Materials
Coated Materials, Biocompatible
Equipment Design
Ethers
Fluorocarbons
Humans
Microscopy, Electron, Scanning
Oxygen
Oxygenators
Permeability
Polypropylenes
Porosity
Silicone Elastomers
Surface Properties
Surface Tension
Time Factors
Water
Rights: fechado
Identifier DOI: 
Address: http://www.ncbi.nlm.nih.gov/pubmed/10759633
Date Issue: 2000
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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