02437nas a2200253   4500008004100000022001400041245009100055210006900146260000900215300001200224490000700236520160100243653001701844653002001861653001701881653001501898653002001913100002501933700002301958700002101981700003002002700002802032856012302060       2019                        eng d  a0887-624X00aDesign and synthesis of aromatic polyesters bearing pendant clickable maleimide groups0 aDesign and synthesis of aromatic polyesters bearing pendant clic  cMAR   a630-6400 v573 a<p>A bisphenol bearing pendant maleimide group, namely, N-maleimidoethyl-3, 3-bis(4-hydroxyphenyl)-1-isobenzopyrrolidone (PPH-MA) was synthesized starting from phenolphthalein. Aromatic (co)polyesters bearing pendant maleimide groups were synthesized from PPH-MA and aromatic diacid chlorides, namely, isophthaloyl chloride (IPC), terephthaloyl chloride (TPC), and 50:50 mol % mixture of IPC and TPC by low temperature solution polycondensation technique. Copolyesters were also synthesized by polycondensation of different molar proportions of PPH-MA and bisphenol A with IPC. Inherent viscosities and number-average molecular weights of aromatic (co)polyesters were in the range of 0.52-0.97 dL/g and 20,200-32,800 g/mol, respectively indicating formation of medium to reasonably high-molecular-weight polymers. C-13 NMR spectral analysis of copolyesters revealed the formation of random copolymers. The 10% weight loss temperature of (co)polyesters was found in the range 470-484 degrees C, indicating their good thermal stability. A selected aromatic polyester bearing pendant maleimide groups was chemically modified via thiol-maleimide Michael addition reaction with two representative thiol compounds, namely, 4-chlorothiophenol and 1-adamantanethiol to yield post-modified polymers in a quantitative manner. Additionally, it was demonstrated that polyester containing pendant maleimide groups could be used to form insoluble crosslinked gel in the presence of a multifunctional thiol crosslinker. (c) 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2019, 57, 630-640</p>10acrosslinking10amaleimide group10amodification10apolyesters10athiol-maleimide1 aNagane, Samadhan, S.1 aKuhire, Sachin, S.1 aJadhav, Uday, A.1 aDhanmane, Sushilkumar, A.1 aWadgaonkar, Prakash, P.  uhttps://library.ncl.res.in/content/design-and-synthesis-aromatic-polyesters-bearing-pendant-clickable-maleimide-groups