Paper Information

Journal:   IRANIAN POLYMER JOURNAL (ENGLISH)   JANUARI 2005 , Volume 14 , Number 1 (55); Page(s) 81 To 90.
 
Paper: 

SYNTHESIS AND PROPERTIES OF ORGANOSOLUBLE AND OPTICALLY ACTIVE POLY (AMIDE-IMIDE)S BASED ON EPICLON AND (S)-(+)-VALINE UNDER MICROWAVE IRRADIATION

 
 
Author(s):  MALAKPOUR SH.*, KOSARI ELAHEH
 
* ORGANIC POLYMER CHEMISTRY RESEARCH LABORATORY, COLLEGE OF CHEMISTRY, ISFAHAN UNIVERSITY OF TECHNOLOGY, ISFAHAN-84156, I.R. IRAN
 
Abstract: 

Aliphatic dianhydride, Epiclon [3a,4,5,7a-tetrahydro-7-methyl-5-(tetrahydro-2,5-dioxo-3-furanyl)-1,3-isobenzofurandione] or [5-(2,5-dioxotetrahydrofurfuryl)-3-methyl-3-cyclohexyl-1,2-dicarboxylic acid anhydride] 1 was reacted with (s)-(+)-valine 2 in acetic acid and the resulting imide-acid 3 was obtained in high yield. The diacid chloride 4 was obtained from the reaction of 3 with thionyl chloride. The polycondensation reaction of diacid chloride 4 with several aromatic diamines such as 4,4-sulfonyldianiline 5a, 4,4-diaminodiphenylmethane 5b, 4,4-diaminodiphenylether 5c, p-phenylenediamine 5d, m-phenylenediamine 5e, 2,4-diaminotoluene 5f and 4,4-diaminobiphenyl 5g was developed by using a domestic microwave oven in the presence of a small amount of o-cresol. The polymerization reactions were also performed by two another methods: low temperature solution polycondensation and reflux conditions. A series of optically active poly(amide-imide)s with inherent viscosity of 0.13-0.32 dL/g were obtained. All of the above polymers were fully characterized by IR, elemental analysis and specific rotation techniques. Some structural characterizations and physical properties of these optically active poly(amide-imide)s are reported.

 
Keyword(s): MICROWAVE-ASSISTED POLYCONDENSATION, OPTICALLY ACTIVE POLYMERS, POLY(AMIDE-IMIDE)S, MICROWAVE OVEN, INHERENT VISCOSITY
 
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