Data for "Microwave-Assisted synthesis of Polyethylene Terephthalate"

Poly(ethylene terephthalate) (PET) is widely utilized, particularly in packaging, due to its favorable properties. However, PET is derived from terephthalic acid, a fossil-based monomer, prompting significant efforts towards its reuse through hydrolysis or alcoholysis and subsequent repolymerization. Traditional PET preparation faces challenges related to energy consumption and catalyst efficiency. Microwave polycondensation has emerged as a promising technique, offering energy savings through reduced reaction times and efficient heating. This method leverages the rapid local heating of polar groups, potentially accelerating reactions and selectively heating reactants, thus overcoming limitations of conventional polymerization.The data available includes:Proton Nuclear Magnetic Resonance (¹H‑NMR) spectra were acquired using an 80 MHz Spinsolve Benchtop NMR spectrometer (Magritek). Quantitative Nuclear Magnetic Resonance (qNMR) spectra were obtained from samples with maleic acid as the internal standard and dimethyl sulfoxide (DMSO) as the solvent. For the polymerized materials, ¹H‑NMR spectra were recorded using a solvent mixture of deuterated chloroform and trifluoroacetic acid (TFA) (4:1 v/v). File can be opened using MestReNova (Mnova), TopSpin and Spinsolve software.Fourier Transform Infrared Spectroscopy (FT-IR),Size Exclusion Chromatography (SEC) was performed using a Waters Acquity system, which comprised a solvent delivery module, a column oven, and a Waters PDA TS detector. The system was equipped with two organic size exclusion chromatography columns connected in series: a 150 x 4.6 mm Acquity APC^TM XT 200 2.5 µm column and a 150 x 4.6 mm Acquity APC^TM XT 125 2.5 µm column. The eluent was a 9:1 (v/v) mixture of dichloromethane and hexafluoroisopropanol, and detection was conducted at an absorption wavelength of 290 nm with a slit width of 12 nm.Differential Scanning Calorimetry (DSC)<br>