Curing characteristics, tensile and morphological properties of tea waste filled natural rubber composites
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Date
2018-06
Authors
Nur Zafirah Hamdan
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Abstract
The objective of this research work was to study the curing characteristics, tensile
and morphological properties of tea waste filled natural rubber composites. The tea waste
powder was characterized by using Fourier Transform Infra-Red (FTIR) Spectroscopy and
Scanning Electron Microscopy (SEM) testing. Curing characteristics, tensile properties,
morphological studies of tensile fractured surfaces and the extent of rubber-filler interactions
of tea waste filled natural rubber (NR) composites were investigated as a function of filler
loading in Series 1, the effect of silane coupling agent in Series 2 and the hybrid fillers
between tea waste and carbon black in Series 3. The tea waste loading used in Series 1 and
Series 2 was 0, 5, 10, 15, 30 phr and 0, 5, 10, 15 phr, respectively while in Series 3, the mixed
of tea waste (TW) with carbon black (CB) was in the function of TW + CB which was 30 +
0, 30 + 10, 30 + 20 and 30 + 30 phr. The results indicate that the natural rubber composites
without the presence of coupling agent which was Si69 (Series 1) has the poor interaction
between tea waste powder hence reduced the properties of the composites while the natural
rubber composites with the presence of Si69 (Series 2) showed the improvement in the
properties of the composites as the better interaction occurred between rubber and filler. In
Series 3, as the amount of carbon black increase, the properties of the natural rubber
composites also increased due to the incorporation of reinforcing fillers in the rubber
compounding that enhanced the rubber properties.