Method for grafting polymers to polytetrafluoroethylene, and gra

Coating processes – With pretreatment of the base – Preapplied reactant or reaction promoter or hardener

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427400, 428336, 428337, 428338, 428422, 5253262, 525275, 525276, 525385, B05D 310, C08F25908, C08J 712, C08J 716

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active

046613838

ABSTRACT:
A novel method for grafting polymers to polytetrafluoroethylene (PTFE) and composites grafted according to this method are described. PTFE at a surface of a substrate is reduced to polyacetylene (PA) and then doped with a suitable dopant. The doped PA/PTFE substrate is then contacted with a polymerizable monomer precursor capable of polymerizing with doped PA, to form the polymer of said precursor chemically bonded to the surface of the PA/PTFE substrate. A grafted composite with layers of varying thickness may be formed by further contacting the substrate bonded to polymer with preformed polymer of a similar cohesive energy density.

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Costello and McCarthy, "Electronic Conductivity . . . ", Macromolecules, 18, pp. 2087-2088 (1985).
Cervinka, et al., "Study and Analysis of Structural . . . ", Philosophical Magazine B, 51, No. 6, pp. 603-633 (1985).
Sobue, et al., "Radiation Induced Graft . . . ", Chemical Abstracts, 76 (1971) 113814f.
Kabanov, et al., "Radiation Ionic Graft . . . ", Chemical Abstracts, (1971) 89044m.
Patton and McCarthy, "Surface Modification of Poly . . . ", Macromolecules, 17, pp. 2940-2942 (1984).

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