Premium
New fluorinated thermoplastic elastomers
Author(s) -
Tonelli Claudio,
Trombetta Tania,
Scicchitano Massimo,
Simeone Giovanni,
Ajroldi Giuseppe
Publication year - 1996
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/(sici)1097-4628(19960110)59:2<311::aid-app16>3.0.co;2-z
Subject(s) - thermoplastic elastomer , elastomer , materials science , thermoplastic , polymer , ultimate tensile strength , phase (matter) , solvent , polymer chemistry , composite material , polymer science , copolymer , organic chemistry , chemistry
New fluorinated thermoplastic elastomers (FTE) with perfluoropolyether (PFPE) blocks have been synthesized by reacting a fluorinated macrodiol with aromatic diisocyanates in the presence of a solvent, followed by subsequent chain extension with low molecular weight aliphatic or aromatic diols. Tensile properties measurements and dynamical‐mechanical analysis (DMA) have been carried out and the relationship between chemical structure and final properties has been determined. These new thermoplastic fluorinated polyurethanes show an elastomeric behavior over a wide temperature range (between −75 and 100°C), thanks to their multiphase morphology consisting of a continuous fluorinated phase with a very low T g (−120°C) and a dispersed high melting hydrogenated hard phase, as verified by a calorimetric and dynamic‐mechanical analysis. At the same time, some of the outstanding properties of fluorinated oligomers, such as chemical inertness and low surface tension, are retained in the final polymers. Thanks to these characteristics this new class of polymeric materials provides new opportunities for the application of thermoprocessable elastomers in advanced technological fields. © 1996 John Wiley & Sons, Inc.