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Title 

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

Authors 

S D KimS LeeH S LeeS Y KimIm Sik Chung

Publisher 

Taylor & Francis

Issue Date 

2016

Citation 

Designed Monomers and Polymers, vol. 19, no. 3, pp. 227-235

Keywords 

high performance polymerspolyamidespolyimidesPyrazole

Abstract 

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 0.33-0.53 dL/g, were soluble in various organic solvents. They showed no Tg values before degradation, and the 5% weight loss temperature of the polyamides and the polyimides occurred at approximately 420 and 470 °C, respectively. They also underwent no thermal transitions, such as degradation or crosslinking, up to 440 °C in spite of the presence of pendent amino and cyano groups.

ISSN 

1568-5551

Link 

http://dx.doi.org/10.1080/15685551.2015.1136529

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2019-05-02


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