Rice bran oil as a novel compounding ingredient in sulphur vulcanization of natural rubber

✍ Scribed by A.P. Kuriakose; G. Rajendran

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 652 KB
• Volume: 31
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(94)00202-9

✦ Synopsis

Raw rice bran oil contains free fatty acids, unsaponifiable matter, phosphatides and wax as the main constituents. The wax portion of the oil contains phenols such as tocopherol, oryzanol etc. in reasonable <quantity. A higher fatty acid like stearic acid and a processing oil are generally added during the compounding of rubber as a co-activator and a processing aid respectively. Phenol derivatives are used in rubber compounding as antioxidants. In the present study the above compounding ingredients were replaced by raw rice bran oil in carbon black and silica filled systems in NR compounding and the results obtained are compared with reference systems. In sulphur accelerated system of NR presently studied, it was found that raw rice bran oil can substitute for the process oil, antioxidant and fatty acid without much affecting the cure characteristics of the mixes and physical properties of the vulcanizates. Apart from the low cost of the product, it will be helpful in also saving energy during mixing. The high free fatty acid content and non-toxic nature of this non-edible natural oil could therefore be an added advantage in the rubber product manufacturing industry.