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Applications of cardanol in rubber processing
| Content Provider | CUSAT-Thesis |
|---|---|
| Advisor | Dr. Eby Thomas, Thachil |
| Researcher | Mary, Alexander |
| Abstract | This research project explores the utilization of cardanol in various capacities forrubber processing. Cardanol is a phenol with a long side chain in the meta positionof the benzene ring. It is obtained by the vacuum distillation of cashew Hut shellliquid (CNSL) which is a cheap agro-byproduct. In this study, the plasticizer propertyof cardanol was investigated in silica filled and HAF black filled NR, NBR, EPDMand CR by comparing cure characteristics and mechanical properties of vulcanizatescontaining conventional plasticizer with those containing cardanol as plasticizer. Theco-activator, antioxidant and accelerator properties were investigated in gum samplesof NR, NBR, EPDM and CR by comparing the properties of vulcanizates whichcontain conventional co-activator, antioxidant and accelerator with those in whicheach of them was replaced by cardanol. The general effectiveness of cardanol wasinvestigated by determination of cure time , measurement of physical andmechanical properties, ageing studies, crosslink density, extractability, FTIR spectra,TGA etc.The results show that cardanol can be a substitute for aromatic oil in both silica filledand HAF black filled NR. Again, it can replace dioctyl phthalate in both silica filledand HAF black filled NBR. Similarly, cardanol Can replace naphthenic oil in silicafilled as well as HAF black filled EPDM and CR. The cure characteristics andmechanical properties are comparable in all the eight cases. The co-activatorproperty of cardanol is comparable to stearic acid in all the four rubbers. The curecharacteristics and mechanical properties in this case are also comparable. Theantioxidant ,property of cardanol is comparable to TQ in all the four rubbers. Theantioxidant property of cardanol is comparable to TQ in all the four case of NBR andEPDM.Theaccelerator property of cardarlol is comparable with CBS in the case of NBR andEPDM. No accelerator property is observed in the case of NR. The acceleratorproperty of cardanol in CR is not negligible when compared with TMTD. |
| File Format | |
| Language | English |
| Publisher Institution | Cochin University of Science & Technology |
| Access Restriction | Open |
| Subject Keyword | Cardanol Rubber processing Natural rubber (NR) processing Nitrile rubber (NBR) processing Ethylene propylene diene monomer(EPDM) Chloroprene(CR) processing |
| Content Type | Text |
| Educational Degree | Doctor of Philosophy (Ph.D.) |
| Resource Type | Thesis |
