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Electric Conductance of Films Prepared from Polymeric Composite Nanoparticles
Author(s) -
Hain Jessica,
Pich Andrij,
Adler HansJürgen,
Rais David,
Nešpůrek Stanislav
Publication year - 2008
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.200850813
Subject(s) - pedot:pss , materials science , composite number , styrene , electrical resistivity and conductivity , conductivity , nanorod , chemical engineering , polymer chemistry , methacrylate , nanoparticle , composite material , nanotechnology , polymerization , polymer , copolymer , chemistry , engineering , electrical engineering
Summary : Novel polymeric particles of spherical shape consisting of an electrically insulating poly(styrene‐ co ‐acetoacetoxyethyl methacrylate) (PS/PAAEM) core and a conductive shell of poly(3,4‐ethylenedioxythiophene) (PEDOT) were synthesized. Electric measurements showed a strong dependence of the conductivity on weight ratio of PEDOT to PS/PAAEM in the composite. As the PEDOT content varied from 2 to 31.4 wt.‐%, resistivity of the resulting material changed exponentially from 12 GΩ cm to 100 Ω cm, depending also on the type of the used oxidation agent. Similar studies were performed on the basis of insulating poly( N ‐vinylcaprolactam‐ co ‐acetoacetoxyethyl methacrylate) (PVCL/PAAEM) microgel particles, which acted as microreactors for the synthesis of conductive PEDOT nanorods. In microgel systems, the conductivity was lower than in core‐shell systems, when the PEDOT content was less than 5 wt.‐%. Above this value of PEDOT concentration, the conductivities in the two systems became similar.