A study on a perfluoropolymer purification and its application to membrane formation (Record no. 42911)

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fixed length control field 02282nam a2200265Ia 4500
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control field MX-MdCICY
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20250625124723.0
040 ## - CATALOGING SOURCE
Transcribing agency CICY
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-8607
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245 10 - TITLE STATEMENT
Title A study on a perfluoropolymer purification and its application to membrane formation
490 0# - SERIES STATEMENT
Volume/sequential designation Journal of Membrane Science, 163, p.203-209, 1999
520 3# - SUMMARY, ETC.
Summary, etc. In this work, a study on a perfluoropolymer purification with crossflow MF and UF, using commercial membranes, has been carried out. Copolymers of tetrafluoroethylene (TFE)and 2,2,4trifluoro, 5trifluorometoxy 1,3 dioxide (TTD), known commercially as HYFLON® AD, are highly transparent to light from deep UV to near infrared, so they find applications in optic and electronic industries, such as plastic optical fibers (POF), anti-reflective coating and protective pellicles in manufacturing semi-conductor. For the above application, it is often crucial to avoid the presence of both suspended and dissolved contaminants in the polymer and polymeric solutions. Membranes made from this amorphous perfluoropolymer were prepared in flat sheet, tubular and hollow fiber forms. Tests of membrane hydrophobic character and of pure gas permeability were carried out. Experimental gas separation data obtained with membranes prepared with TTD-TFE co-polymers and data from the literature on membranes made with co-polymers of perfluoro2,2dimethyldioxide (PDD)and TFE, commercially known as TEFLON® AF, revealed an interesting linear relationship between permeation and glass transition temperature Tg. The voids volume fraction (8v)of the above amorphous perfluoropolymers was also estimated from the difference between the experimental polymer density and a theoretical density obtained by simple calculations using the group contribution method
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element MEMBRANE
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element PERFLUOROPOLYMERS
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Arcella, V.
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Personal name Colaianna, P.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Maccone, P.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Sanguineti, A.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Gordano, A.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Clarizia, G.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Drioli, E.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1GAlqQPAMZhWlJg-6S9ECcArxf85N39ET/view?usp=drivesdk">https://drive.google.com/file/d/1GAlqQPAMZhWlJg-6S9ECcArxf85N39ET/view?usp=drivesdk</a>
Public note Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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Source of classification or shelving scheme Clasificación local
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-8607 25.06.2025 25.06.2025 Documentos solicitados