@article { ISI:000279996500008, title = {Synthesis and characterization of new aromatic polyesters containing pendent naphthyl units}, journal = {Journal of Applied Polymer Science}, volume = {117}, number = {5}, year = {2010}, month = {SEP}, pages = {2545-2552}, publisher = {JOHN WILEY \& SONS INC}, address = {111 RIVER ST, HOBOKEN, NJ 07030 USA}, abstract = {

Two bisphenols, viz., 4,4{\textquoteright}-[1-(2-naphthaleny-1)ethylidene]bisphenol and 4,4{\textquoteright}-[1-(2-naphthalenyl) ethylidene]bis-3-methylphenol were prepared by condensation of commercially available 2-acetonaphthanone with phenol and o-cresol, respectively. A series of new aromatic polyesters containing pendent naphthyl units was synthesized by phase-transfer-catalyzed interfacial polycondensation of these bisphenols with isophthaloyl chloride, terephthaloyl chloride, and a mixture of isophthaloyl chlorideiterephthaloyl chloride (50 : 50 mol \%). Inherent viscosities of polyesters were in the range 0.83-1.76 dL g(-1), while number average molecular weights (M(n)) were in the range 61,000-235,000 g mol(-1). Polyesters were readily soluble in organic solvents such as dichloromethane, chloroform, tetrahydrofuran, m-cresol, pyridine, N,N-dimethylformamide, N,N-dimethylacetarnide, and 1-methyl-2-pyrrolidinone at room temperature. Tough, transparent, and flexible films were cast from a solution of polyesters in chloroform. X-Ray diffraction measurements displayed a broad halo at 20 congruent to 19 degrees indicating the amorphous nature of polyesters. Glass transition temperatures of polyesters were in the range 209-259 degrees C. The temperature at 10\% weight loss (T(10)), determined by TGA in nitrogen atmosphere, of polyesters was in the range 435-500 degrees C indicating their good thermal stability. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 117: 2545-2552, 2010

}, keywords = {Aromatic polyesters, bisphenol, interfacial polycondensation, pendent naphthyl units}, issn = {0021-8995}, doi = {10.1002/app.32162}, author = {Honkhambe, Pandurang N. and Biyani, Mahesh V. and Bhairamadgi, Nagendra S. and Wadgaonkar, Prakash P. and Salunkhe, Manikrao M.} } @article { ISI:000276790500011, title = {Synthesis and characterization of new aromatic polyesters containing cardo decahydronaphthalene groups}, journal = {European Polymer Journal}, volume = {46}, number = {4}, year = {2010}, month = {APR}, pages = {709-718}, publisher = {PERGAMON-ELSEVIER SCIENCE LTD}, address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND}, abstract = {

Three cardo bisphenols containing decahydronaphthalene group viz., 4,4{\textquoteright}-(octahydro-2(1H)-naphthylidene)bisphenol, 4,4{\textquoteright}-(octahydro-2(1H)-naphthylidene)bis-3-methylphenol and 4,4{\textquoteright}-(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.

}, keywords = {bisphenol, Cardo, Decahydronaphthalene, polyester, Structure-property relationship}, issn = {0014-3057}, doi = {10.1016/j.eurpolymj.2009.12.028}, author = {Honkhambe, Pandurang N. and Bhairamadgi, Nagendra S. and Biyani, Mahesh V. and Wadgaonkar, Prakash P. and Salunkhe, Manikrao M.} } @article { ISI:000293849200017, title = {Poly(ether ether ketone)s and poly(ether ether ketone ketone)s containing cardo decahydronaphthalene groups: synthesis and characterization}, journal = {Journal of Applied Polymer Science}, volume = {122}, number = {3}, year = {2011}, month = {NOV}, pages = {1607-1613}, publisher = {WILEY-BLACKWELL}, address = {COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA}, abstract = {

New poly(ether ether ketone)s and poly (ether ether ketone ketone) s were synthesized by polycondensation of each of the three bisphenols, viz., 4,4{\textquoteright}-(octahydro-2(1H)-naphthylidene) bisphenol, 4,4{\textquoteright}-(octa-hydro-2(1H)-naphthylidene) bis-3-methylphenol, and 4,4{\textquoteright}(octahydro-2(1H)-naphthylidene) bis-3,5-dimethylphenol with 4,4{\textquoteright}-difluorobenzophenone and 1,3-bis(4-fluorobenzoyl) benzene in a mixture of N,N-dimethylacetamide and toluene [1 : 1 (v/v)] in the presence of anhydrous potassium carbonate. Inherent viscosities of poly(ether ether ketone) s and poly (ether ether ketone ketone) s were in the range 0.32-0.80 dL/g and number-average molecular weights were in the range 16,100-55,900 g/mol. Poly(ether ether ketone) s and poly(ether ether ketone ketone) s were soluble in organic solvents such as dichloromethane, chloroform, tetrahydrofuran, meta-cresol, pyridine, and 1-methyl-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 poly(ether ether ketone) s and poly (ether ether ketone ketone) s. The glass transition temperature poly(ether ether ketone) s and poly(ether ether ketone ketone) s were in the range 185-251 degrees C. The temperature at 10\% weight loss, determined from thermogravimetric analysis, of poly(ether ether ketone) s and poly(ether ether ketone ketone) s in nitrogen atmosphere was in the range 462-493 degrees C indicating their good thermal stability. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 122: 1607-1613, 2011

}, keywords = {bisphenol, cardo decahydronaphthalene, poly(ether ether ketone ketone)s, poly(ether ether ketone)s, Polycondensation, Thermal properties}, issn = {0021-8995}, doi = {10.1002/app.33921}, author = {Honkhambe, Pandurang N. and Pasale, Sharad K. and Bhairamadgi, Nagendra S. and Kumbhar, Kishor P. and Salunkhe, Manikrao M. and Wadgaonkar, Prakash P.} }