Evaluation of the effectiveness of black tea leaves wastes as phytochemical-rich plant fillers and natural antioxidant in polyethylene

April 15, 2026Open Access

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Key Points

This study aims to compare mechanical and thermo-mechanical properties of polyethylene stabilized with black tea leaf waste and a petrochemical additive.
Samples were produced using compression molding, injection molding, and rotational molding.
Low-density polyethylene (LDPE) was modified with 5 mass% black tea leaf waste and equivalent Irganox 1010 based on phenolic content.
Stabilization efficiency was assessed using Fourier transform infrared spectroscopy and calorimetric methods including oxidation induction time and onset temperature.
Black tea leaf waste showed comparable stabilization effect to Irganox 1010 in LDPE, indicating its potential as a natural antioxidant.
Characterization methods revealed suitable mechanical properties for samples utilizing black tea leaf waste.
Porosity and Vicat softening temperature measurements provided insights into the performance of both stabilizers.

Compares black tea leaf waste and petrochemical additives for stabilization in polyethylene, suggesting a sustainable alternative.

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AniśkoMichalak et al. (2026) studied this question.

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