MALAYSIAN JOURNAL OF CHEMISTRY (MJChem)

MJChem is double-blind peer reviewed journal published by the Malaysian Institute of Chemistry (Institut Kimia Malaysia) E-ISSN: 2550-1658

Acid Photo Etching Effect of Epoxidized Natural Rubber (ENR) and Polyvinyl Chloride (PVC) as Polymer Binder

Muhammad Afiq Rosli
Universiti Teknologi MARA
Siti Raihan Hamzah
wi_nawawi@uitm.edu.my
Nur Aien Muhamad
Universiti Teknologi MARA
Nureel Imanina Abdul Ghani
Universiti Teknologi MARA
Nadiah Sabihah Md Natar
Universiti Teknologi MARA
Syahirul Ikhwan Ab Aziz
Universiti Teknologi MARA
Nur Syazana Nazeri
Universiti Teknologi MARA
Muhammad Saifulddin Mohd Azami
Universiti Teknologi MARA
Mohd Azlan Ishak
Universiti Teknologi MARA
Muhammad Zahiruddin Ramli
Universiti Teknologi MARA Cawangan Pulau Pinang
Wan Izhan Nawawi
Universiti Teknologi MARA

DOI: https://doi.org/10.55373/mjchem.v24i2.228

Keywords: Immobilized TiO2; acid photo etching; polymer binder; crosslinking reaction; photocatalytic degradation

Abstract

Epoxidized natural rubber (ENR) and polyvinyl chloride (PVC) were used as polymer binders in immobilizing TiO2 on glass substrate by using the dip-coating technique. The acid photo etching process was applied to the immobilized TiO2/ENR/PVC (TEP) samples to study the reaction and surface transformation with the presence of hydrochloric acid (HCl). The photocatalytic activity of the prepared immobilized TiO2/ENR/PVC samples was examined on the degradation of reactive red 4 (RR4) under a 65 W compact fluorescent lamp. All immobilized TiO2/ENR/PVC samples under the acid photo etching process (TEP A) expressed higher photocatalytic activity in comparison with the photo etching process (TEP P). TEP A50 (acid photo etching for 50 h) sample has shown the highest photocatalytic degradation where the pseudo 1st order rate constant (k) value was ca. 0.0694 min-1. However, it is not considered as an optimum sample due to the peel-off effect. The optimum sample for the acid photo etching process was TEP A40 (acid photo etching for 40 h) with 0.0553 min-1. This optimum sample is 2 times faster as compared with the photoetched immobilized TiO2/ENR/PVC, which is primarily due to the surface transformation and formation of C-OH bond from crosslinking reaction of the polymer binder with the HCl as verified from the FESEM and FTIR analysis.

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Published 30 June 2022


Issue Vol 24 No 2 (2022): Malaysian Journal of Chemistry

Section