Preparation and characterization of natural rubber latex filled with stannic oxide nanocomposites

Ameruddin, Haizatul Norisha (2022) Preparation and characterization of natural rubber latex filled with stannic oxide nanocomposites. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

Nano sized filler reinforced to the natural rubber latex was to generate high performance of the natural rubber based composites. The purpose of preparing this study is to determine the effects of stannic oxide (SnO2) nanofiller loadings and ultrasonication period to the tensile strength of NRL/SnO2 nanocomposites. This study also had aimed to correlate between the mechanical tensile strength, physical properties and the electrical surface resistivity properties of NRL/SnO2 nanocomposites based on the fracture surface morphology. The study was designed followed by the standard operation procedure which utilizing the solution casting method by using the response surface methodology. From this study, the good dispersion of stannic oxide into the natural rubber latex based nanocomposites was expected based on the good result of tensile strength for the fracture surface morphological. This study was to understand the interaction involved between the process variable of the solution mixing for the preparation of NRL/SnO2 nanocomposites via two-level full factorial approach. There are two (2) independent variables which are the filler loadings (wt. %) and stirring period (minutes), involved in this work. A set of by 2 2 two level full factorial design with three (3) replications at a center point and no block was applied to yield a total set of 7 set of experiments. The Design Expert 6.0.8 statistical software had optimized the resulted tensile strength (TS) response as dependent variable of prepared NRL/SnO2 nanocomposites. Fracture surface morphological observation via SEM has been performed to correlate further the interaction between the processing variables toward the resulted TS response. In overall of this study, it has significance to facilitate manual processing of the composites started at the early integration between the stannic oxide as reinforcement phase and natural rubber latex as the matrix phase using horn sonication method and magnetic stirrer.

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