INSIDE THE CHEMICAL PROPERTIES AND SURFACE MORPHOLOGY OF ENR/PVC FILLED CELLULOSE GRAFTED PMMA MEMBRANE
Keywords:
Cellulose, ENR/PVC membrane, PMMA, FTIR, morphologyAbstract
The ENR/PVC thin film has great potential as a membrane due to its ideal owing to unique characteristics such as freestanding, high-pressure resistance, and durability over time but low porosity. This research aims to investigate inside into chemical and morphological properties of developed composite epoxidized natural rubber with polyvinyl chloride-filled cellulose grafted polymethyl methacrylate (ENR/PVC/cellulose-g-PMMA) membrane. Solution blending of 60:40 wt. % ENR/PVC 10 % w/v of filler were mixed homogeneously for 24h stirring in THF solution. The membranes were cast onto a glass plate and the phase inversion technique was used to prepare ENR/PVC/Cell-g-PMMA membranes. The characterization of chemical properties was carried out by Fourier transform infrared spectroscopy (FTIR) to determine functional groups related to bond breaking and the formation of new bonds of the species during grafting copolymerization and membrane fabrication. Variable pressure scanning electron microscopy (VPSEM) was conducted to determine surface morphology and textural properties of fillers and membranes. Furthermore, it contributes to porosity and the formation of pores on the membrane. FTIR spectrum shows that absorption peaks around the range 1735-1725 cm-1 of the carbonyl ester -C=O functional group have been detected and proven successful of the grafting method between cellulose and PMMA. The rough surface of fibers, formation of open pores, and interspace structure between ENR/PVC matrix and filler affirmed the addition of cell-g-PMMA fillers caused by film-filler and filler-filler interfaces interaction as shown by the VPSEM micrograph. In summary, the chemical properties and morphological analysis give useful information on the effectiveness of potential ENR/PVC/Cell-g-PMMA membranes in developing standalone, highly pressure-resistant, porous, and elastic membranes.
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