FTIR analysis of pyrolyzed LLDPE and polystyrene microparticles and their chemical reaction mechanism completed with computational bibliometric literature review to support sustainable development goals (SDGs)
Year: 2025
Type: article
Abstract: The purpose of this study was to determine the chemical compound content of polystyrene and linear low-density Density Polyethylene (LLDPE) microparticles after the pyrolysis process analyzed by Fourier Transform Infrared (FTIR). The pyrolysis was done by decomposing 307.6 g of a mixture of LLDPE particles (sizes of 5000 am) and polystyrene particles (sizes of 3000 µm) with a ratio of 1:1 for 180 min at a temperature in the range of 120-190°C in the absence of air using a closed batch reactor (length x width x height = 14.4 x 17.3 x 24 cm). The reactor had outlets connected to condensers (cooled at 24°C). The condensers were set in series, with condenser 1 directly connected to the reactor and condenser 2 positioned at the outlet of condenser 1. The pyrolysis result in the first condenser was a brownish-yellow liquid (15 mL) with a strong odor. The second condenser produced a yellow liquid (2 mL) and a distinctive odor. After the pyrolysis, the reactor contained a brown solid (residue). Different chemical compositions were detected. The sample from condenser 1 contained C=C ethylene bonds, C=C styrene aromatics, and C-H long-chain alkanes, whereas the second condenser contained -OH bond (like water). Further, when the samples were compared with pure LLDPE and Polystyrene, there was no C=C bond. This pyrolysis process showed two reactions: the end chain cracking and random cracking. This study brings ideas in the pyrolysis of plastic wastes, supporting current issues in the sustainable development goals (SDGs).
Source: SciEnggJ
Authors: Asep Bayu Dani Nandiyanto, Andini Salsabila, Stevani Veronica, Farhan Muzhaffar Tiras Putra, Ida Kaniawati, Teguh Kurniawan, Obie Farobie, Muhammad Roil Bilad
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W7084496851