02477nas a2200301   4500008004100000022001400041245012900055210006900184260000800253300001100261490000800272520146800280653002901748653001301777653001801790653001601808653001401824653001401838653002301852100002201875700002301897700002601920700002301946700002501969700002601994700002802020856012702048       2024                        eng d  a0014-305700aCatechol- and phenolic hydroxyl-functionalized partially bio-based (Co) poly(ether sulfone)s with multifarious applicability0 aCatechol and phenolic hydroxylfunctionalized partially biobased   cNOV  a1134840 v2203 a<p>
	A largely bio-based new bisphenol, namely, 4,4 `-((3,4-dimethoxyphenyl)methylene)-bis(2-methoxyphenol) (DMBM) was synthesized by the reaction of veratraldehyde with guaiacol. DMBM and varying compositions of DMBM and bisphenol A were polycondensed with bis(4-fluorophenyl) sulfone to afford reasonably high molecular weight film-forming (co)poly(ether sulfone)s possessing built-in methoxyl groups. T10 and Tg values of (co)poly(ether sulfone)s were in the range 382-478 degrees C and 171-187 degrees C, respectively indicating their good thermal stability and the values decreased with increase in mol % incorporation of DMBM. The methoxyl groups present in (co)poly (ether sulfone)s were quantitatively de-blocked resulting in the formation of corresponding polymers possessing pendant catechol moieties and free phenolic hydroxyl groups. By virtue of the presence of these functional moieties, (co)poly(ether sulfone)s are amenable for post-polymerization modifications, and exhibited properties such as antimicrobial (23 mm against Staphylococcus aureus and 18 mm against Escherichia coli)), antioxidant (72 % scavenger of free radicals), adhesive (2.24 MPa lap shear strength) and usefulness as redox-active agent in zinc-ion batteries. These data underscore the promise of DMBM as a versatile monomer of wider utility for the synthesis of functional (co)poly(ether sulfone)s capable of expanding their applicability beyond the conventional ones.</p>
10a(Co)poly(ether sulfone)s10aadhesive10aAntimicrobial10aAntioxidant10abio-based10abisphenol10aZinc-ion batteries1 aWale, Apparav, K.1 aJagtap, Ashish, S.1 aPandey, Priyanshi, R.1 aDastager, Syed, G.1 aShelke, Manjusha, V.1 aAmbade, Ashootosh, V.1 aWadgaonkar, Prakash, P.  uhttps://library.ncl.res.in/content/catechol-and-phenolic-hydroxyl-functionalized-partially-bio-based-co-polyether-sulfones02136nas a2200229   4500008004100000022001400041245012600055210006900181260000800250300001000258490000700268520133600275653002401611653001401635653001401649653001301663653002301676100002201699700002601721700002801747856013101775       2026                        eng d  a1060-132500aUtilization of bisphenol based on lignin-derived chemicals for the synthesis of partially bio-based aromatic copolyesters0 aUtilization of bisphenol based on ligninderived chemicals for th  cJAN  a83-900 v633 a<p>
	New aromatic copolyesters were synthesized by phase-transfer catalyzed interfacial polycondensation of 4,4 `-((3,4-dimethoxyphenyl)methylene)bis(2-methoxyphenol) (DMBM) with isophthaloyl chloride (IPC) and a mixture of (50:50 mol %) IPC and terephthaloyl chloride (TPC). Additionally, a series of copolyesters was synthesized by polycondensation of varying compositions of DMBM and bisphenol A with IPC. Copolyesters exhibited inherent viscosity and Mn values in the range 0.59-0.98 dL/g and 15,840-49,460 g/mol, respectively, indicating formation of reasonably high molecular weight polymers. Copolyesters could be cast into tough, transparent and flexible films from chloroform solution. UV-vis measurements on films gave values of T400, T450 and cut-off wavelength in the range 80-84 %, 83-89 % and 324-334 nm, respectively. The formation of random copolyesters was evidenced by 13C NMR spectroscopic studies. Copolyesters exhibited good thermal stability with 10% weight loss temperature in the range 391-438 degrees C. The Tg values of copolyesters were in the range 162-180 degrees C and Tg values decreased with an increase in mol% content of DMBM. Copolyesters exhibited tensile strength, Young's modulus and elongation at break values in the range 83.55-70.68 MPa, 2.11-1.31 GPa and 10.52-5.45 %, respectively.</p>
10aAromatic polyesters10abio-based10abisphenol10amethoxyl10aThermal properties1 aWale, Apparav, K.1 aAmbade, Ashootosh, V.1 aWadgaonkar, Prakash, P.  uhttps://library.ncl.res.in/content/utilization-bisphenol-based-lignin-derived-chemicals-synthesis-partially-bio-based-aromatic