Journal
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
Volume 47, Issue 6, Pages 1575-1583Publisher
WILEY
DOI: 10.1002/pola.23262
Keywords
electrical conductivity; membranes; nanocomposites; photoresist; polyimides; PSPI
Categories
Funding
- National Science Council [NSC-95-212OM-006-003]
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A new electrically conductive photoresist has been developed. It is based on the dispersion of silver nanoflakes in a negative-tone photosensitive polyimide (PSPI) precursor. 2-Mercaptopropionic acid was used as the surfactant to modify the silver nanoflake surface for the dispersion of silver nanoflakes in the polymer. The silver/PSPI nanocomposites showed electrical conductivity at a low silver content of 10 wt %. The electrical conductivity of the silver/PSPI nanocomposites ranged from 10 to 10(4) S/cm, which was dependent on the silver weight fraction in the resist formulation. Patterns with a resolution of 30 mu m were obtained from the silver/PSPI nanocomposites. The silver/PSPI nanocomposites had excellent thermal properties. Their glass transition temperatures were above 360 degrees C and thermal decomposition temperatures were over 420 degrees C. (C)2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 1575-1583, 2009
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