Dataset on characteristics of polystyrene microplastic in order to test homoaggregation process
Description
Environmentally realistic polystyrene microplastic (PSMP) produced by cryomilling of daily-use polystyrene products were investigated in order to test homoaggregation process in deionized water and NaCl solutions. This dataset contains the analytical results characterizing chemical nature, specific surface area, size, shape and morphology of tested PSMP particles and stability of PSMP suspensions in experimental solutions: (1) – IR spectrum, (2)– TG-MS patterns, (3) – images and particles length calculation using ImageJ, (4) – all particles characteristics for five measurements and images, (5) – BET report, and (6) – zeta potential data in the temperature range 1-30degC.
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Fourier Transform infrared spectroscopy was performed using a Nicolet 6700 spectrometer with a DTGS KBr detector (Thermo Scientific, Waltham, Massachusetts, USA), using single-reflection diamond Attenuated Total Reflection (ATR) accessory (MIRacle by PIKE Technologies, Madison, Wisconsin, USA) (1 – IR spectrum). Thermal analysis was performed for <40PSMP using thermogravimetric (TG) analyzer TA Discovery instrument (TA Instruments, USA) coupled to a ThermoStarTM, GDS 320 quadrupole mass spectrometer (MS) (Pfeiffer Vacuum, Germany) (2 – TG-MS patterns). Scanning electron microscope (SEM) images was performed using FEI Quanta 200 FEG, the voltage was set up to 20 kV (3 – images and particles length calculation using ImageJ). Morphological imaging for size and morphology characterization of PSMP particles was performed using Morphologi 4 (Malvern Panalytical), an automated static image analysis system measuring particle size in the range 0.5 – 1300 μm in two magnifications (20x, 50x) (4 – all particles characteristics for five measurements and images). The specific surface area (SBET) of PSMP powder was determined with the multipoint BET method using N2 adsorption isotherm measured with ASAP 2010 (Micromeritics Inc.) (5 – report). Zeta potential measurements of PSMP suspensions were performed using Zetasizer Nano-ZS (Malvern Instruments) in DI water and in 50mM NaCl (6 – data in the temperature range 1-30degC).