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Synthesis of fullerenol‐derived elastomers and conductive elastomers
Author(s) -
Chiang Long Y.,
Wang Lee Y.,
Kuo C. S.,
Lin J. G.,
Huang C. Y.
Publication year - 1997
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19971180164
Subject(s) - elastomer , materials science , elongation , ultimate tensile strength , polymer , conductivity , polymerization , composite material , thermal stability , conductive polymer , polymer chemistry , chemical engineering , chemistry , engineering
Utilization of polyhydroxylated C 60 in a condensation reaction with diisocyanated oligo(tetramethylene oxide) led to the successful fabrication of elastomeric poly(urethane‐ether) networks. These polymer networks exhibit interesting thermal behavior at low temperatures, improved tensile strength and elongation at ambient temperatures, and enhanced thermal mechanical stability at high temperatures. Design of conducting elastomers was made by carrying out an in situ polymerization of conductive polymer precursors in an interpenetrating fashion at the near‐surface of polyhydroxylated C 60 ‐hypercrosslinked elastomers. Results demonstrated that elastomers with an appreciable conductivity while retaining desirable elastic properties of the network can be achieved. The room‐temperature conductivity of polyaniline interpenetrated (IPN) conducting elastomer was found to be 2.0 Scm −1 . The tensile strength and elongation at break of one conductive IPN elastomer was found to be 20 MPa and 480%, respectively. Interestingly, the strain dependent conductivity of these conducting elastomers was found to increase progressively above 200% of elongation. These results demonstrated, for the first instance, conductivity measurements of organic conducting elastomers at an elongation length of higher than 300%, showing a r.t. conductivity of >4.0 Scm −1 .