SYNTHESIS AND CHARACTERIZATION OF NEW THERMALLY STABLE POLYAMIDES BASED ON 2,5-PYRIDINE DICARBOXYLIC ACID AND AROMATIC DIAMINES
Six new thermally stable polyamides 3a-f were synthesized through the polycondensation reaction of 2,5-pyridine dicarboxylic acid 1 with six different derivatives of aromatic diamines 2a-f in amedium consisting of N-methyl-2-pyrrolidone, triphenyl phosphite, calcium chloride and pyridine. The polycondensation reaction produced a series of novel polyamides containing pyridyl moieties in the main chain in high yield with inherent viscosities between 0.50-0.82 dL/g. The resulting polymers were fully characterized by means of FT-IR spectroscopy, elemental analyses, inherent viscosimetry, and solubility tests. Thermal properties of these polymers were investigated by using thermal gravimetric analysis (TGA) and differantional thermal gravimetry (DTG). All of the polymers were soluble at room temperature in polar solvents such as N,N'-dimethyl acetamide, N,N'-dimethyl formamide, dimethyl sulfoxide and N-methy1-2-pyrrolidone.
Main Author: | FAGHIHI,KHALIL |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Sociedad Chilena de Química
2009
|
Online Access: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072009000200008 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Synthesis and characterization of new soluble polyamides from Acenaphtohydrazinomercaptotriazole diamine
by: Mighani,Hossein, et al.
Published: (2015) -
New optically active and thermally stable poly(amide-imide)s containing N,N'-(Bicyclo[2,2,2]oct-7-ene-2,3,5,6-tetracarboxylic)-bis-L-alanine and aromatic diamines: synthesis and characterization
by: Faghihi,Khalil, et al.
Published: (2009) -
NEW COPOLYAMIDES CONTAINING AZOBENZENE GROUPS AND DIFFERENT DIACID AND DIAMINE IN THE MAIN CHAIN: SYNTHESIS AND CHARACTERIZATION
by: FAGHIHI,KHALIL, et al.
Published: (2010) -
On the Toxicity of the Aromatic Diamines and their Tetramethylcarboxylic Acid Derivatives
by: Gili,Pedro, et al.
Published: (2000) -
PYRIDINE BASED POLYMERS: SYNTHESIS AND CHARACTERIZATION
by: PARDO,M. A., et al.
Published: (2014)