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Polytetrafluoroethylene Unit cell

Commercial polytetrafluoroethylene (PTFE) is usually the product of sintering and has its crystallinity reduced by the introduction of branched chains. PTFE (degree of crystallinity, 93-98%) has a melting point of 620 K and exhibits a helical structure which undergoes unit cell transitions at 292 and 303 Below 292 K the conformation can be described by a helix containing I3CF2... [Pg.587]

Transition Temperature - This is a temperature (19°C for 100% homopolymer of tetrafluoro-ethylene) at which the unit crystalline cell of polytetrafluoroethylene changes from triclinic to hexagonal. [Pg.546]

See other pages where Polytetrafluoroethylene Unit cell is mentioned: [Pg.319]    [Pg.352]    [Pg.11]    [Pg.332]    [Pg.252]    [Pg.160]    [Pg.171]    [Pg.538]    [Pg.66]    [Pg.403]    [Pg.49]   
See also in sourсe #XX -- [ Pg.619 ]



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Polytetrafluoroethylen

Polytetrafluoroethylene

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