Synergistic effects of metal stearate, calcium carbonate, and recycled polyethylene on thermo-mechanical behavior of polyvinylchloride

Publish Year: 1402
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:

JR_POJ-10-1_001

تاریخ نمایه سازی: 27 دی 1401

Abstract:

Thermo-mechanical recycling process is the cheapest way to recover plastic waste such as LDPE with low ecological impact. Thus, the goal of this work is to obtain high-performance microcomposites from polyvinyl chloride (PVC), recycled low-density polyethylene (r-LDPE), calcium carbonate (CaCO۳), and calcium/zinc stearate (CaSt۲/ZnSt۲). The effect of the two ratios of thermal stabilizers with different concentrations on the mechanical properties and thermal stability of PVC and PVC/r-LDPE (۱:۱) blend was studied. The samples were characterized using infrared spectroscopy (FTIR), mechanical tests, thermal analysis, and scanning electron microscopy (SEM). The addition of ۵ phr of CaSt۲:ZnSt۲ (۹:۱) to PVC (MC۴) resulted in optimal tensile strength and elongationat-break values. In addition, MC۴ showed high thermal stability. Moreover, the incorporation of r-LDPE into PVC made the PVC matrix stronger and more stable than pure PVC, which yields high mechanical and thermal performances. Furthermore, an outstanding synergistic effect is obtained when a heat stabilizer rich in calcium is combined with CaCO۳ and r-LDPE. This PVC/r-LDPE blend as a composite can be used in several industrial fields.

Authors

Samira Maou

Laboratoire de Chimie Appliquée, Université Mohamed-Kheider de Biskra, Biskra ۰۷۰۰۰, Algeria

Yazid Meftah

Ecole Normale Supérieure de Boussaada, Boussaada ۲۸۲۰۱, Algeria

Ahmed Meghezzi

Laboratoire de Chimie Appliquée, Université Mohamed-Kheider de Biskra, Biskra ۰۷۰۰۰, Algeria