Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1998-3-10
pubmed:abstractText
Swift ions with 50 MeV energy are used to irradiate bio-polymeric films. Lithium, carbon and oxygen beams, with fluencies ranging between 10(8) and 10(13) ions/cm2, are swept on large surfaces of hydrogenated and fluorated polymers. The electronic stopping power of the ion induces high rates of ionization, excitation and radical formation along the ion path with production of chain-scission and cross-linking processes which can be investigated by the molecular emission from the irradiated polymer. The radiation damage increases the chemical solubility of the material around the ion track up to distances of the order of 100 nm. A suitable chemical etching removes the damaged material leaving micrometric holes in the polymeric film. This process gives rise to micro-perforated films which can be used as microfilters, with sub-micrometric pore dimension, high selectivity and controllable porosity. Their use is very interesting for special applications in ultra- and microfiltration of biological liquids.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
http://linkedlifedata.com/resource/pubmed/chemical/Biocompatible Materials, http://linkedlifedata.com/resource/pubmed/chemical/Carbon, http://linkedlifedata.com/resource/pubmed/chemical/Cross-Linking Reagents, http://linkedlifedata.com/resource/pubmed/chemical/Free Radicals, http://linkedlifedata.com/resource/pubmed/chemical/Ions, http://linkedlifedata.com/resource/pubmed/chemical/Lithium, http://linkedlifedata.com/resource/pubmed/chemical/Membranes, Artificial, http://linkedlifedata.com/resource/pubmed/chemical/Oxygen, http://linkedlifedata.com/resource/pubmed/chemical/Polyethylenes, http://linkedlifedata.com/resource/pubmed/chemical/Polytetrafluoroethylene, http://linkedlifedata.com/resource/pubmed/chemical/Polyvinyls, http://linkedlifedata.com/resource/pubmed/chemical/polyvinylidene fluoride
pubmed:status
MEDLINE
pubmed:issn
0959-2989
pubmed:author
pubmed:issnType
Print
pubmed:volume
7
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
303-13
pubmed:dateRevised
2006-4-17
pubmed:meshHeading
pubmed-meshheading:9457381-Biocompatible Materials, pubmed-meshheading:9457381-Biomedical Engineering, pubmed-meshheading:9457381-Carbon, pubmed-meshheading:9457381-Cross-Linking Reagents, pubmed-meshheading:9457381-Electrons, pubmed-meshheading:9457381-Equipment Design, pubmed-meshheading:9457381-Free Radicals, pubmed-meshheading:9457381-Ions, pubmed-meshheading:9457381-Lithium, pubmed-meshheading:9457381-Membranes, Artificial, pubmed-meshheading:9457381-Micropore Filters, pubmed-meshheading:9457381-Microscopy, Electron, Scanning, pubmed-meshheading:9457381-Oxygen, pubmed-meshheading:9457381-Polyethylenes, pubmed-meshheading:9457381-Polytetrafluoroethylene, pubmed-meshheading:9457381-Polyvinyls, pubmed-meshheading:9457381-Porosity, pubmed-meshheading:9457381-Radiation, Ionizing, pubmed-meshheading:9457381-Radiation Dosage, pubmed-meshheading:9457381-Solubility, pubmed-meshheading:9457381-Surface Properties, pubmed-meshheading:9457381-Technology, Radiologic, pubmed-meshheading:9457381-Ultrafiltration
pubmed:year
1997
pubmed:articleTitle
Microfilters for biomedicine obtained by swift ion processing.
pubmed:affiliation
Dipartimento di Fisica di Messina, Università di Messina, Italy. Torrisi@alpme2.me.infn.it
pubmed:publicationType
Journal Article