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- Title
Effect of cold plasma pretreatment on biodegradation of high-density polyethylene (HDPE) and polystyrene (PS).
- Authors
Chen, Chen; Taghavi, Navid; Baroutian, Saeid
- Abstract
Cold atmospheric plasma (CAP) pretreatment of high-density polyethylene (HDPE) and polystyrene (PS) was investigated to evaluate its effect on biodegradation. Weight and wettability measurement, surface topography, and roughness analysis were examined for physical properties evaluation. Fourier-transform infrared spectroscopy (FT-TR) analysis was conducted to understand the possible chemical transformation. Based on biofilm formation, the highest microbial colonisation was observed on the sample treated with CAP pretreatment + biotreatment, which was 0.56 and 0.19 (at OD 595 nm) for HDPE and PS, respectively. A biodeterioration effect characterised by weight loss and changes of hydrophobicity in which hydrophobicity reductions of 5.1 ± 0.64% and 12° ± 0.35° were observed with the pretreated HDPE within 50 days, respectively. No physical weight loss was detected in the PS sample, but significant surface corrosion was observed. Atomic force microscopy (AFM) also showed a higher surface degradation of 10 and 35% for CAP pretreated HDPE and PS incubated with microorganisms compared to virgin samples incubated in the same condition. Moreover, chemical transformation indicated a new peak (C–O) in CAP-pretreated PE samples before and after 50 days of biodegradation. The experiments with virgin HDPE and PS demonstrated a positive effect of the pretreatment on the biodegradation process.
- Subjects
HIGH density polyethylene; COLD atmospheric plasmas; POLYSTYRENE; BIODEGRADATION; ATOMIC force microscopy; WEIGHT loss; LOW temperature plasmas
- Publication
Journal of Material Cycles & Waste Management, 2024, Vol 26, Issue 3, p1596
- ISSN
1438-4957
- Publication type
Article
- DOI
10.1007/s10163-024-01913-x