Contact us
 |
[email protected] |
 |
3275638434 |
 |
 |
| Paper Publishing WeChat |
Useful Links
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
Mohamad Irfan Fathurrohman1, 2, Bambang Soegijono2 and Emil Budianto2
Full-Text PDF
XML 464 Views
DOI:10.17265/2161-6221/2013.09.004
Affiliation(s)
1. Indonesian Rubber Research Institute, Bogor 16151, West Java, Indonesia 2. Materials Science Graduate Program, University of Indonesia, Jakarta 10430, Indonesia
ABSTRACT
The effect of stearic acid on expanded organoclay and rheometric properties of natural rubber (NR)/expanded organoclay (OCSA) was studied. The expanded organoclay was prepared by melting of stearic acid (SA) in an oven at 100 °C for 1 h. NR/expanded organoclay nanocomposites were prepared by melt intercalation technique using a laboratory open mill followed by compression molding. The characterizations were carried out by means of X-ray diffraction, field emission scanning electron microscopy (FESEM) and moving die rheometer. The results showed that the stearic acid intercalated in the gallery of organoclay (OC) Cloisite® 20A, so the d-spacing of organoclay increased with increasing of stearic acid concentration. The rheometric properties showed that the increasing concentration of stearic acid in NR compound improved the resistance to reversion but contrary for NR/OCSA compounds. The curing time of NR filled expanded organoclay compounds were faster than NR compounds. The increasing of stearic acid in rubber compounds and NR/expanded organoclay compounds increased the curing time (t90) of compounds. The increasing concentration of stearic acid reduced the size of aggeragate especially for ratio OC:SA = 1:1 which OCSA dispersed uniformly in NR matrix.
KEYWORDS
Stearic acid, expanded organoclay, natural rubber, nanocomposite, rheometric properties.
Cite this paper
References