New soluble polyamides and polyimides containing polar functional groups: pendent pyrazole rings with amino and cyano groups

Cited 3 time in webofscience Cited 0 time in scopus
  • Hit : 377
  • Download : 0
A series of aromatic polyamides and polyimides containing pendent pyrazole rings with amino and cyano groups were prepared from a new monomer, 1-(2,4-diaminophenyl)-3-phenyl-4-cyano-5-aminopyrazole, which was prepared from (chloromethylene)propanedinitrile and 2,4-dinitrophenyl hydrazine with two steps. In addition, model compounds were synthesized and characterized by elemental analyses, Fourier transform infrared (FTIR), and nuclear magnetic resonance (NMR) spectroscopy. The amino and cyano groups on the pyrazole ring were not affected during the polymerization process. The synthesized polymers, with intrinsic viscosities of 0.33-0.53dL/g, were soluble in various organic solvents. They showed no T-g values before degradation, and the 5% weight loss temperature of the polyamides and the polyimides occurred at approximately 420 and 470 degrees C, respectively. They also underwent no thermal transitions, such as degradation or crosslinking, up to 440 degrees C in spite of the presence of pendent amino and cyano groups.
Publisher
TAYLOR & FRANCIS LTD
Issue Date
2016-04
Language
English
Article Type
Article
Keywords

LINKED AROMATIC POLYAMIDES; UNSYMMETRICAL DIAMINE; DIANHYDRIDE; POLYPYRAZOLES; POLYMERS; BEHAVIOR

Citation

DESIGNED MONOMERS AND POLYMERS, v.19, no.3, pp.227 - 235

ISSN
1385-772X
DOI
10.1080/15685551.2015.1136529
URI
http://hdl.handle.net/10203/208644
Appears in Collection
CH-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 3 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0