Title :
Liquid-crystalline properties of some poly(ester-amide)s
Author_Institution :
Petru Poni Inst. of Macromolecular Chem., Iasi
Abstract :
The new poly(ester-amide)s were prepared by polycondensation reaction of 1,8-diaminooctane or 1,12-diaminododecane with some diacid chlorides containing preformed ester groups. These polymers were characterized by DSC, polarized light optical microscopy, X-ray diffractions, FTIR and GPC. These polyester-amides show thermotropic liquid crystalline properties and are easily soluble in N-methylpyrrolidinone. The weight average molecular weight is in the range of 2150-3400 and a very closed polydispersity.
Keywords :
Fourier transform spectra; X-ray diffraction; differential scanning calorimetry; infrared spectra; liquid crystal polymers; polymerisation; 1,12-diaminododecane; 1,8-diaminooctane; DSC; FTIR; GPC; N-methylpyrrolidinone; X-ray diffractions; diacid chlorides; molecular weight; polarized light optical microscopy; poly(ester-amide)s; polycondensation reaction; polydispersity; thermotropic liquid crystalline properties; Argon; Crystallization; Hydrogen; Liquid crystal polymers; Liquid crystals; Nitrogen; Optical microscopy; Optical polarization; Optical polymers; Temperature; liquid crystalline; poly(ester-amide)s;
Conference_Titel :
Semiconductor Conference, 2008. CAS 2008. International
Conference_Location :
Sinaia
Print_ISBN :
978-1-4244-2004-9
DOI :
10.1109/SMICND.2008.4703405
