DOI: 10.17630/b07996e5-71c7-4c7d-a9c2-f39fc07172ca
title: Semirenewable Polyamides Containing Disulfide Bonds: Synthesis, Degradation, Self-Healing, and Triboelectric Properties (dataset)

description: The folder named 'supporting information' contains images of self-healing studies reported in the supporting information of the paper.
Scratch test was performed on a selected area using a surgical blade, and its healing was monitored at different time intervals with constant heating
at 80 oC in the oven. Healing was monitored by probing films under an optical microscope (OLYMPUSSZX10) with magnification of 0.63x and 6.3x on selected areas. Tensile tests were performed at room temperature using an Instron 1195 tensile testing machine equipped with a 50 kN load cell. Before conducting tensile tests, the thickness and width of the gauge sections of the dogbone-shaped sample (ASTM D638, Type IV) [2] were precisely measured using a
digital calliper for accurate calculation of stresses and strain. Additionally, the gauge region of each specimen was clearly marked with a black Sharpie to ensure proper alignment during testing and to measure true strain. The strain rate was set at a rate of 20 mm/min. The same conditions were maintained
to conduct the tests for pristine and self-healed samples.

The folder named 'TGA' contains text, excel, and PNG files for the thermal properties (thermogravimetric analysis) of the reported polyamides. Thermogravimetric Analysis (TGA) was performed using Stanton Redcroft STA-780 Series Thermal Analyser between 30–900 °C at a heating rate of 10 °C/min under a flow of nitrogen gas (25 mL/min). Decomposition temperature (Td, °C) was estimated as the temperature of 5% weight loss

The folder named 'NMR' contains NMR spectra of the reported polyamides and NMR spectra obtained from degradation studies. NMR spectra were recorded on a Bruker AVIII 500 MHz or AV 400 MHz NMR spectrometer at 298 K unless otherwise specified. Residual protons of solvent were used as a reference for 1H NMR spectra in deuterated solvent samples. 

The folder named 'IR' contains IR spectra of the reported polyamides. Infrared spectra (ATR-FTIR) were collected using a Shimadzu IRAffinity-1.

The folder named 'GPC' contains gel permeation chromatography data of the reported polyamides and their degradation studies. Gel permeation chromatography (GPC) was performed on an Agilent 1260 InfinityLab II GPC fitted with a refractive index (RI) detector (35 °C). Two plus guard column Agilent PLgel-M 10 µm MIXEDB columns setup was contained within an oven (35 °C). THF was used as the eluent at a flow rate of 1.0 mL min−1. The calibration was conducted using a series of polystyrene (Mn = 1,000 – 423,000 g mol–1) standards purchased from Agilent Technologies.

The folder named 'ESI-MS' contains mass spectrometry data from the degradation studies of polyamides. ESI-MS data were collected as solutions in acetonitrile using a Micromass LCT spectrometer.

The folder named 'DSC' contains differential scanning calorimetry data for the reported polyamides. Differential Scanning Calorimetry (DSC) analyses were performed using a Netzsch DSC204 between -40–300 or 600 °C at a heating rate of 10 °C/min under a flow of nitrogen gas (20 mL/min) after an
initial heat/cool cycle (25–300 °C at 10 °C/min) to remove the thermal history of the sample.