The molecular weight distribution of the CDA and PS materials were measured by GPC using an Agilent 1260 Infinity II High Pressure Liquid Chromatogram Separations module, with an on-line ultraviolet (UV) detector fitted with a deuterium lamp operating at 230 nm (Agilent 1260 Infinity II Variable Wavelength Detector), an interferometric refractometer (Agilent 1260 Infinity II Refractive Index (RI) Detector) operating at 30 °C with a tungsten lamp, and 5 μm PLgel Guard, MIXED-C, and Oligopore columns (Polymer Laboratories Inc.) in series. The mobile phase was tetrahydrofuran (THF) with butylated hydroxytoluene (BHT) preservative delivered at a 1 mL/min flow rate. 12.5 mg of the plastic sample was pre-dissolved in 5 mL THF with BHT preservative. The injection volume was 50 μL. The UV and RI detector signals were simultaneously recorded using Agilent SEC/GPC software version A.02.01 build 9.34851. The number average molecular weight (𝑀 𝑛 ), weight average molecular weight (𝑀 𝑤 ), and dispersity (Đ) were calculated in the software from the measured molecular weight distribution.