02423nas a2200253   4500008004100000022001400041245010700055210006900162260010600231300001200337490000700349520146400356653001401820653001001834653002501844653001401869653003601883100002901919700003001948700002301978700002802001700002702029856011302056       2010                        eng d  a0014-305700aSynthesis and characterization of new aromatic polyesters containing cardo decahydronaphthalene groups0 aSynthesis and characterization of new aromatic polyesters contai  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcAPR  a709-7180 v463 a<p>Three cardo bisphenols containing decahydronaphthalene group viz., 4,4'-(octahydro-2(1H)-naphthylidene)bisphenol, 4,4'-(octahydro-2(1H)-naphthylidene)bis-3-methylphenol and 4,4'-(octahydro-2(1H)-naphthylidene)bis-3,5-dimethylphenol were synthesized starting from commercially available 2-naphthol and were utilized for synthesis of new aromatic polyesters by phase transfer-catalyzed interfacial polycondensation with isophthaloyl chloride, terephthaloyl chloride and a mixture of isophthaloyl chloride and terephthaloyl chloride (50:50 mol %). Inherent viscosities and number average molecular weights (M(n)) of polyesters were in the range 0.35-0.84 dL/g and 13300-48,500 (Gel Permeation Chromatography, polystyrene standard), respectively. Polyesters were readily soluble in organic solvents such as dichloromethane, chloroform, tetrahydrofuran, meta-cresol, pyridine, N,N-dimethylformamide, N,N-dimethylacetamide, and 1-methy1-2-pyrrolidinone at room temperature and could be cast into tough, transparent and flexible films from their chloroform solutions. Wide-angle X-ray diffraction measurements revealed the amorphous nature of polyesters. The glass transition temperature of polyesters was in the range 207-287 degrees C. The temperature at 10% weight loss (T(10)), determined from thermogravimetric analysis of polyesters, was in the range 425-460 degrees C indicating their good thermal stability. (C) 2010 Elsevier Ltd. All rights reserved.</p>10abisphenol10aCardo10aDecahydronaphthalene10apolyester10aStructure-property relationship1 aHonkhambe, Pandurang, N.1 aBhairamadgi, Nagendra, S.1 aBiyani, Mahesh, V.1 aWadgaonkar, Prakash, P.1 aSalunkhe, Manikrao, M.  uhttps://library.ncl.res.in/content/synthesis-and-characterization-new-aromatic-polyesters-containing-cardo-0