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Title: Positron lifetime studies in vinyl polymers of medical importance
Authors: Marques, M. F. Ferreira 
Gordo, P. M. 
Gil, C. Lopes 
Kajcsos, Zs. 
Gil, M. H. 
Mariz, M. J. 
Lima, A. P. de 
Keywords: Vinyl polymers; Positronium; Intra-ocular lenses; Pore size; Free volume
Issue Date: 2003
Citation: Radiation Physics and Chemistry. 68:3-4 (2003) 485-488
Abstract: Vinyl polymers used as artificial lens implants in ophthalmology were investigated by positron lifetime spectroscopy. The structure of these polymers with free volumes offers the possibility of charging them with anti-inflammatory drugs for sustained release. A correlation between the amount of normalised free volume and the ratio of the methyl methacrylate to ethyl-hexyl-acrylate, used as polymerisation monomers, was found.
Rights: openAccess
Appears in Collections:FCTUC Física - Artigos em Revistas Internacionais

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