Premium
Synthesis and characterization of nanocomposite of polyimide–silica hybrid from nonaqueous sol–gel process
Author(s) -
Hsiue GingHo,
Chen JemKun,
Liu YingLing
Publication year - 2000
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(20000613)76:11<1609::aid-app1>3.0.co;2-w
Subject(s) - polyimide , thermogravimetric analysis , differential scanning calorimetry , nanocomposite , materials science , condensation polymer , hybrid material , scanning electron microscope , sol gel , chemical engineering , polymer chemistry , polymer , composite material , nanotechnology , layer (electronics) , engineering , physics , thermodynamics
Polyimide–silica (PI–SiO 2 ) hybrids with a nanostructure was obtained using the nonaqueous sol–gel process by polycondensation of phenyltriethoxysilane in a polyamic acid solution. Self‐catalyzed hydrolysis of phenyl‐substituted akoxysilane and modification on the polyimide structure are applied and result in highly compatible PI–SiO 2 hybrids. Transparent PI–SiO 2 with a high silica content of about 45% was thus obtained. The prepared PI–SiO 2 films were characterized by infrared spectrometry, 29 Si‐NMR, thermogravimetric analysis, differential scanning calorimetry, and scanning electron microscopy. These characterizations showed the silica influence on the properties of the hybrid. The thermal expansion coefficient of the PI–SiO 2 and the temperature correlation were also established for probing the potential for application. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 76: 1609–1618, 2000