Diffusion and transport of aromatic hydrocarbons through natural rubber

✍ Scribed by G. Unnikrishnan; Sabu Thomas

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 481 KB
• Volume: 35
• Category: Article
• ISSN: 0032-3861
• DOI: 10.1016/s0032-3861(05)80015-1

✦ Synopsis

The swelling of crosslinked natural rubber in aromatic hydrocarbons was investigated. Natural rubber was vulcanized by four vulcanizing systems, viz. conventional, efficient, dicumyl peroxide, and a mixture consisting of sulfur and dicumyl peroxide. The peroxide-crosslinked system showed the lowest solvent uptake. The effect of different fillers on the swelling nature of crosslinked natural rubber was studied using carbon black and silica fillers. The silica-filled sample took up higher amounts of solvents than carbon-filled sample. The dependence of the diffusion coefficient on crosslinking system, filler, temperature, etc., was also studied. The solvent-polymer interaction parameter was calculated from the diffusion data.