Use of Lipase in Reducing the Maturation Time and Use of Ammonia in Concentrated Natural Rubber Latex
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Abstract
This study investigated the use of lipase in accelerating the mechanical stability of concentrated natural rubber latex (CNRL) including the low-ammonia latex (LA latex) and high-ammonia latex (HA latex). The effects of CNRL treated with lipase were also investigated on other latex properties and on latex foam production. It was found that lipase treatment was an effective method in accelerating the MST of both LA latex and HA latex without affecting other properties of CNRL. The results showed that the MSTs of HA latex treated with 0.004 % v/v and LA latex treated with ≥ 0.04 % v/v of lipase were significantly higher than that of the commercial HA and LATZ latex. For the effect on latex foam production, it was observed that the density of latex foam obtained from CNRL treated with lipase was not significantly different from those produced from the commercial latex. This implied that lipase addition did not cause any adverse effect on the latex foam product.
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References
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