Hyperfiltration membranes prepared by radiochemical grafting of styrene onto poly(tetrafluoroethylene). Influence of the size and shape of emulsion particles used to obtain the PTFE film | Zendy

Munari S. | Zendy; Vigo F. | Zendy; Nicchia M. | Zendy; Canepa P. | Zendy

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Hyperfiltration membranes prepared by radiochemical grafting of styrene onto poly(tetrafluoroethylene). Influence of the size and shape of emulsion particles used to obtain the PTFE film

Author(s) -

Munari S.,

Vigo F.,

Nicchia M.,

Canepa P.

Publication year - 1976

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.1976.070200120

Subject(s) - tetrafluoroethylene , membrane , materials science , styrene , chemical engineering , grafting , emulsion , particle (ecology) , polymer chemistry , composite material , porosity , particle size , copolymer , polymer , chemistry , biochemistry , oceanography , engineering , geology

The hyperfiltration performances of membranes obtained from PTFE films sintered with different granulometric distribution emulsions were studied. It has been possible to show that: (1) large spherical particles lead to high flux, poor rejection membranes, and vice versa for small spherical particles; (2) the particle shape affects the membrane properties. “Stick” shaped particles lead to better rejection properties than the spherical and “fibrillar” ones. An attempt was also made to utilize a PTFE/PMMA porous support to make asymmetric membranes.

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