SYNTHESIS OF THERMAL STABILIZER POLYVINYL CHLORIDE FROM BEEF TALLOW

• Main Author: Mardiani, Shifa
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/83291
• Institution: Institut Teknologi Bandung

Polyvinyl Chloride (PVC) is known as one of the most versatile and extensively utilized type of thermoplastic polymers. The growing consumption of PVC demands a higher requirement for thermal stabilizers, which are chemicals used to prevent thermal degradation. Current study is focused on the development of more efficient and eco-friendly thermal stabilizers made from Ca/Zn metal mixtures, with the aim of preventing enviromental harm. The exploration of using industrial waste as a source material for PVC thermal stabilizers has not been extensively addressed in research. One potential waste that can be utilized is the fleshing waste generated by the leather tanning industry. Fleshing waste is considered unprofitable due to its unpleasant smell resulting from the process of decay it undergoes during storage. This study investigates the production of a thermal stabilizer, known as Stab Ca/Zn-LSPK, by synthesizing a mixture of calcium and zinc metals using tannery waste tallow. The study consisted of three phases: extraction of LSPK, synthesis and evaluation of Stab Ca/Zn-LSPK stabilizing effect in comparison to commercial stabilizers. The Stab Ca/Zn-LSPK produced consists of 5,18% calcium and 8,65% zinc, with organic components comprising 89,9% and 86,8% respectively. The stabilization impact of Stab Ca/Zn-LSPK was evaluated using dehydrochlorination and two roll mill tests. Stab Ca/Zn-LSPK demonstrated enhanced thermal stability of PVC, as evidenced by the dehyrochlorination and two roll mill test results. When a dose of 3 phr and a ratio of 2:1 were used, Stab Ca/Zn-LSPK exhibited induction and stability times of 16,4 and 24,4 minutes, respectively. On the other hand, Stab Ca/Zn-Stearate showed induction and stability times of 16 and 27 minutes under the same dose and ratio. Furthermore, in order to expand the scope of investigation, the flowability of PVC was examined in relation to the impact of Stab Ca/Zn-LSPK. The stabilizing impact and ability to flow of Stab Ca/Zn-LSPK were similar to Stab Ca/Zn-Stearate. This study provides evidence that fleshing waste can be effectively utilized in the manufacturing of Ca/Zn stabilizers for PVC. In addition, this research aligns with the Sustainable Development Goals related to waste minimization, optimal resource utilization, and the advancement of materials with enhanced resistance to thermal degradation.