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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 33, Number 7
BKCSDE 33(7)
July 20, 2012 

 
Title
New Polytriazoleimides with High Thermal and Chemical Stabilities
Author
Yanpeng E, Liqiang Wan, Yujing Li, Farong Huang*, Lei Du
Keywords
Polytriazoleimide, 1,2,3-Triazole-containing diamine, Dielectric properties, Chemical resistance, High performance film
Abstract
A series of novel polytriazoleimides were prepared from various aromatic dianhydrides and a new kind of 1,2,3-triazole-containing aromatic diamine synthesized by the Cu (I)-catalyzed 1,3-dipolar cycloaddition reaction in DMAc, and characterized by FT-IR, 1H-NMR, XRD, DSC and TGA techniques. The results show the polytriazoleimides are soluble in most of strong polar solvents and have inherent viscosity values of 0.51-0.62 dL/g(DMAc). The polytriazoleimide films exhibit a tensile strength of 62.3-104.5 MPa and an elongation at breakage of 4.0-8.1%, a glass transition temperature (Tg) of 257-275 oC, a decomposition temperature (at 5% weight loss) of 350-401 oC in N2 atmosphere, and a dielectric constant of 2.47-3.01 at 10 MHz, which depend on the structure of the polymers. The polytriazoleimides perform good resistance to acid and alkali solution.
Page
2193 - 2199
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