Value-added natural rubber skim latex concentrate/montmorillonite as environmentally-friendly nanocomposite materials

Nik Intan N. I., . and Devaraj V., . Value-added natural rubber skim latex concentrate/montmorillonite as environmentally-friendly nanocomposite materials. pp. 216-229. ISSN 1511-1768

Skim latex concentrate (SLC) is being evaluated as a new value-added raw material to produce wet masterbatch with nano dispersed layered clay or montmorillonite (MMT). Raw skim latex (SL) is a by product obtained during the centrifugation process to concentrate field latex into latex concentrate (LC). Skim latex is subsequently concentrated to SLC by the environmentally-friendly ultrafiltration membrane separation method. The aim of this study is to utilise the uniqueness of SLC based on its uniform and narrow particle size distribution and higher protein content compared to the centrifuged latex concentrate. Increase of vulcanisation rates of the nanocomposite was observed when control material namely centrifuged LC was replaced with skim latex concentrate. In addition both the maximum torque and delta torque were raised with increasing filler contents up to 10 p.h.r. The vulcanised properties such as tensile strength modulus tear strength hardness and compression set were also found to have improved. Furthermore there was a reduction of 18 to 29 in air permeability for rubber clay nanocomposites prepared from SLC compared to the neat NR skim rubber. It is believed that the improvement in mechanical and barrier properties observed is partly related to the homogeneous dispersion of the layered clay within the smaller and more uniform latex particles in the NRSLC as examined by microscopy techniques.

Full text available from: Official URL: http://vitaldoc.lgm.gov.my:8060/vital/access/servi...

Abstract

Skim latex concentrate (SLC) is being evaluated as a new value-added raw material to produce wet masterbatch with nano dispersed layered clay or montmorillonite (MMT). Raw skim latex (SL) is a by product obtained during the centrifugation process to concentrate field latex into latex concentrate (LC). Skim latex is subsequently concentrated to SLC by the environmentally-friendly ultrafiltration membrane separation method. The aim of this study is to utilise the uniqueness of SLC based on its uniform and narrow particle size distribution and higher protein content compared to the centrifuged latex concentrate. Increase of vulcanisation rates of the nanocomposite was observed when control material namely centrifuged LC was replaced with skim latex concentrate. In addition both the maximum torque and delta torque were raised with increasing filler contents up to 10 p.h.r. The vulcanised properties such as tensile strength modulus tear strength hardness and compression set were also found to have improved. Furthermore there was a reduction of 18 to 29 in air permeability for rubber clay nanocomposites prepared from SLC compared to the neat NR skim rubber. It is believed that the improvement in mechanical and barrier properties observed is partly related to the homogeneous dispersion of the layered clay within the smaller and more uniform latex particles in the NRSLC as examined by microscopy techniques.

[error in script]

Item Type:	Article
AGROVOC Term:	Natural rubber
AGROVOC Term:	Latex
AGROVOC Term:	Clay
AGROVOC Term:	Polymers
AGROVOC Term:	Cross-linking
AGROVOC Term:	Mechanical properties
AGROVOC Term:	Chemistry
AGROVOC Term:	Microscopy
Geographical Term:	Malaysia
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	28 Apr 2025 02:32
URI:	http://webagris.upm.edu.my/id/eprint/23018

Actions (login required)

View Item