@article {49842,
	title = {Utilization of bisphenol based on lignin-derived chemicals for the synthesis of partially bio-based aromatic copolyesters},
	journal = {Journal of Macromolecular Science Part A-Pure and Applied Chemistry},
	volume = {63},
	year = {2026},
	month = {JAN},
	pages = {83-90},
	type = {Article},
	abstract = {<p>
	New aromatic copolyesters were synthesized by phase-transfer catalyzed interfacial polycondensation of 4,4 {\textquoteleft}-((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{\textquoteright}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>
},
	keywords = {Aromatic polyesters, bio-based, bisphenol, methoxyl, Thermal properties},
	issn = {1060-1325},
	doi = {10.1080/10601325.2025.2589929},
	author = {Wale, Apparav K. and Ambade, Ashootosh V. and Wadgaonkar, Prakash P.}
}
