Karakterisasi Sifat Mekanik, Morfologi dan Termal Polivinil Klorida Termodifikasi Metil Metakrilat dengan Bahan Pengisi Abu Sekam Padi

Abstract

Efforts to increase the heat resistance of materials that are often used in electronic devices such as Polyvinyl Chloride (PVC) resin are needed to avoid PVC from decomposing when burned. Materials such as rice husk ash which are known to contain silicate compounds can be used as fillers which function not only as reinforcement, but also as thermal stabilizers. Meanwhile, to improve the compatibility of fillers in the polymer matrix, modifications are generally made with reactive monomers. In this study, PVC resin modified by reactive monomer methyl methacrylate with benzoyl peroxide (BPO) as initiator was carried out by reflux method in tetrahydrofuran (THF) solvent. Optimum conditions are obtained by varying the composition of the filler. Then, the characterization of the composite plastic films which included tensile strength tests, SEM, TGA and FTIR. The best results were composite plastic films with the addition of rice husk ash 50 php with a tensile strength value of 4.41 MPa, a stretch value of 10.55% and a Young's modulus value of 0.42 MPa. The results of the SEM morphological analysis showed that PVC- g-MMA with the addition of rice husk ash as filler caused some roughness on the surface and also the presence of relatively small pores due to the homogeneous distribution of the filler which indicated compatibility between matrices. and fillers. The results of the TGA thermal analysis showed that PVC-g-MMA without the addition of filler as a whole have a weight reduction of 86.96%, and PVC-g-MMA with the addition of rice husk ash as a filler as a whole have weight reduction of 69.92%. This shows that the sample with the addition of rice husk ash as filler has better thermal stability properties