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Sungai Buloh, Malaysia

Maarof F.,Technical University of Madrid | Fauzi M.A.F.A.,Malaysian Rubber Board | Mohamed S.,Technical University of Madrid
AIP Conference Proceedings | Year: 2014

This paper presents results on statistical distribution fitting and polynomial regression on accumulated biomass of seven year-old tree species Hopea odorata, which were planted in three different soil series of ultisols, namely Rengggam, Baling and Kuala Berang. Data were collected from a study conducted in a Hopea odorata plantation at FRIM Research Station, Segamat, Johor. Thirty tree stands in each soil series were randomly sampled to measure their growth performance and accumulated biomass. The Kolmogorov-Smirnov and Anderson-Darling tests indicated that for all tree stands, diameter, height, above ground (stem, branch, leaves) and below ground (root) biomass were found to be best fitted with the four parameters Johnson's System Bounded (SB) distributions. Then, for each soil series, a polynomial regression model was estimated to describe the relationship between total accumulated biomass and functions of tree diameter and height. © 2014 AIP Publishing LLC. Source

Lim H.M.,Malaysian Rubber Board | Misni M.,University of Kuala Lumpur
Applied Rheology | Year: 2016

Natural rubber latex concentrate (NRLC) is an important material used in manufacturing dipped products, yet thorough analysis of their colloidal and rheological properties are still lacking in these areas. In this work, the colloidal and rheological behaviour of the NRLC was studied. The NRLC particle size was in the range of 0.3 to 2 m with narrow particle size distribution. The response of NRLC to an applied deformation was assessed through rheological experiments which include dynamic oscillation and steady state measurements. A change from liquid-like to solid-like behavior was observed as the volume fraction of the NRLC was increased above 0.48. The plastic viscosity and yield stress of the NRLC increased with increasing volume fraction according to the Bingham equation. The maximum packing volume fraction of the NRLC was found to be 0.75 with a diffused double layer thickness of 14 nm at φ=0.61. © Appl. Rheol. Source

Malaysian Rubber Board | Date: 2007-05-08

Gloves for medical use, gloves for use in hospitals, latex medical gloves, surgical gloves.

Malaysian Rubber Board | Date: 2012-07-05

A practical and environmentally-friendly method, i.e. the high temperature-mechanical mixing by using an internal mixing device and a two-roll open milling device is used to produce the carbon blacks-free electrically conductive sulfur-vulcanised rubber blends of solid poly(butadiene-co-acrylonitrile) and solid sulfonic acid doped polyaniline. The addition of sulfur vulcanisation system does not affect the electrical properties of the vulcanised blends. All vulcanised blends prepared by using this method show useful electrical conductivities up to the order of 10


Malaysian Rubber Board | Date: 2010-10-26

gloves for medical use, gloves for use in hospitals, latex medical gloves, surgical gloves.

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