02623nas a2200265   4500008004100000022001400041245011300055210006900168260000800237300001200245490000700257520172900264653002001993653001702013653001702030653001502047653001702062653003102079100001802110700002202128700002502150700002602175700002802201856012802229       2019                        eng d  a0887-624X00aThermally crosslinkable and chemically modifiable aromatic polyesters possessing pendant propargyloxy groups0 aThermally crosslinkable and chemically modifiable aromatic polye  cMAR  a588-5970 v573 a<p>New aromatic (co)polyesters containing pendant propargyloxy groups were synthesized by phase transfer-catalyzed interfacial polycondensation of 5-(propargyloxy)isophthaloyl chloride (P-IPC) and various compositions of P-IPC and isophthaloyl chloride with bisphenol A. FTIR and NMR spectroscopic data, respectively, revealed successful incorporation of pendant propargyloxy groups into (co)polyesters and formation of (co)polyesters with desired compositions. (Co)polyesters exhibited good solubility in common organic solvents such as chloroform, dichloromethane, and tetrahydrofuran and could be cast into transparent, flexible, and tough films from chloroform solution. Inherent viscosities and number average molecular weights of (co)polyesters were in the range 0.77-1.33 dL/g and 43,600-118,000 g/mol, respectively, indicating the achievement of reasonably high-molecular weights. The 10% weight loss temperatures of (co)polyesters were in the range 390-420 degrees C, demonstrating their good thermal stability. (Co)polyesters exhibited T-g in the range 146-170 degrees C and T-g values decreased with increase in mol % incorporation of P-IPC. The study of non-isothermal curing by DSC indicated thermal crosslinking of (co)polyesters via propargyloxy groups. The utility of pendant propargyloxy group was demonstrated by post-modification of the selected copolyester with 1-(4-azidobutyl)pyrene, 9-(azidomethyl)anthracene, and azido-terminated poly(ethyleneglycol) monomethyl ether via copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition reaction. FTIR and H-1 NMR spectra confirmed that click reaction was quantitative. (c) 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2019, 57, 588-597</p>10aClick chemistry10acrosslinking10amodification10apolyesters10apropargyloxy10astep-growth polymerization1 aVerma, Savita1 aMaher, Deepak, M.1 aNagane, Samadhan, S.1 aTawade, Bhausaheb, V.1 aWadgaonkar, Prakash, P.  uhttps://library.ncl.res.in/content/thermally-crosslinkable-and-chemically-modifiable-aromatic-polyesters-possessing-pendant