Free-volume studies in polyurethane membranes by positron annihilation spectroscopy

Radiation Physics and Chemistry

Volumn 68, Issue 3-4, 2003, Pages 573-576

  Ferreira Marques, M F ^a,b   Lopes Gil, C ^b   Gordo, P M ^b   Kajcsos, Zs ^b,c   De Lima, A P ^b   Queiroz, D P ^d   De Pinho, M N ^d  

^a POLYTECHNIC INSTITUTE OF COIMBRA   (Portugal)

^b UNIVERSITY OF COIMBRA   (Portugal)

^c WIGNER RESEARCH CENTRE FOR PHYSICS   (Hungary)

^d INSTITUTO SUPERIOR TÉCNICO   (Portugal)

Author keywords

Free volume; Permeability; Phase separation; Pore size; Positronium; Urethane urea polymers

Indexed keywords

MEMBRANES; POLYPROPYLENES; POSITRON ANNIHILATION SPECTROSCOPY;

POLYURETHANE MEMBRANES;

POLYURETHANES;

OXIDE; POLYMER; POLYPROPYLENE; POLYURETHAN; UREA;

CONFERENCE PAPER; CORRELATION ANALYSIS; DOPPLER FLOWMETRY; GAS PERMEABILITY; MATHEMATICAL COMPUTING; MEMBRANE MODEL; MEMBRANE PERMEABILITY; MEMBRANE STRUCTURE; PHASE SEPARATION; POROSITY; RADIOCHEMISTRY; SPECTROSCOPY;

EID: 0141609127     PISSN: 0969806X     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0969-806X(03)00234-2     Document Type: Conference Paper

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