Studies on epoxidized rubber seed oil as plasticizer for acrylonitrile butadiene rubber

Euro J Lipid Sci & Tech

Pavithran

Bakare

2005

Epoxidized and hydroxylated rubber seed oils were prepared by peroxyformic acid generated in situ by reacting formic acid and hydrogen peroxide with RSO, a renewable resource. The structural and physico-chemical properties of RSO have been determined. The fatty acid composition showed a high content of polyunsaturated fatty acids. The modified products were characterized with regard to their structure and properties. The findings of this study revealed that both hydroxylated and epoxidized RSO can be prepared by one-pot multi-step reactions.

Section: Introductionmentioning

confidence: 99%

“…RSO has no commercial value in Nigeria to the best of our knowledge [10]. Previous research studies have shown that RSO is a potential raw material for alkyd resins used as binders for surface coatings [11], diesel fuel substitute [12], processing aid for polymers [13] and for production of liquid soaps [13].…”

Section: Introductionmentioning

confidence: 99%

Epoxidation and hydroxlation of rubber seed oil: one‐pot multi‐step reactions

Euro J Lipid Sci & Tech

Pavithran

Bakare

2005

“…This oil seed crop has been cultivated on a commercial scale for several years and is abundantly available in Nigeria, India and Australia. The fatty acid composition enables its use in cosmetic formulations, metal soaps, alkyd resins and the production of biodiesel [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…[3]. Metal soaps prepared from rubber seed oil have been shown to have a stabilizing effect on flexible and rigid PVC [2,[6][7][8][9] and as plasticizer for acrylonitrile rubber [4] amongst other uses. However, little attention has been paid to the thermal behaviour of these additives.…”

Section: Introductionmentioning

confidence: 99%

Thermal behaviour of metal soaps from biodegradable rubber seed oil

Balköse

Egbuchunam

2010

J Therm Anal Calorim

Soaps are a class of surface active compounds derived from natural oils and fats. Double decomposition reactions permit the synthesis of metallic soaps, which are long-chain carboxylates of metal ions, from alkaline ones such as sodium, potassium or ammonium soaps. Metallic soaps are commercially important as they find use in diverse applications such as driers in paints or inks, components of lubricating greases, heat stabilizers for plastics (especially PVC), catalysts and water proofing agents, fuel additives and cosmetic products amongst others. Many of these applications are related to the thermal properties of these compounds and the thermal behaviour of metal soaps in terms of decomposition processes is of great importance. Rubber seed oil (RSO) which is an unsaturated triglyceride abundantly available in Nigeria, India and Australia is an excellent starting material for metal soaps. In this study rubber seed oil having 2.2% myristic acid, 7.6% palmitic acid, 10.7% stearic acid, 20.61% oleic acid, 36.62% linoleic acid, 22.5% linolenic acid was used in making barium, calcium, cadmium and zinc soaps. The thermal behaviour of soaps (Ba, Ca, Cd and Zn) of rubber seed oil for use as additives in the processing of poly(vinyl chloride) (PVC) was investigated by thermal gravimetry and differential scanning calorimetry. The stability of the soaps was examined by thermogravimetry up to 873 K at a constant heating rate of 10°C min -1 . The soaps were found to be thermally stable up to 473 K as they recorded less than 5% mass loss at this temperature with values of apparent activation energy for decomposition varying from 52 to 96 kJ mol -1 . Differential scanning calorimetric studies of the soaps revealed melting and decomposition behaviour of metal soaps.

“…Rubber seed oil (RSO) is an unsaturated triglyceride abundantly available in Nigeria, India and Australia and is an excellent starting material for many products such as metal soaps and epoxy compounds for the processing of polymers [3,10,14,15], alkyd resins and the production of bio-diesel [16,17]. The unsaturated double bonds present in RSO have been converted into the more reactive oxirane moiety by reaction with peracids or peroxides and epoxidised rubber seed oil (ERSO) has been shown to retard the dehydrochlorination of PVC using rate measurements obtained from a degradation tube [3,10,14].…”

Section: Introductionmentioning

confidence: 99%

Effect of zinc soaps of rubber seed oil (RSO) and/or epoxidised rubber seed oil (ERSO) on the thermal stability of PVC plastigels

Egbuchunam

Balköse

Polymer Degradation and Stability

2007

Zinc soaps of rubber seed oil (RSO) and epoxidised rubber seed oil (ERSO) were prepared and their use as PVC stabilizers investigated. Characterization of Zn soaps of RSO prepared by different techniques and ERSO gave information on the purity, structure and thermal behaviour of these materials. From the analysis, the production of these materials for use in thermal stabilization of PVC would be optimized as their use greatly enhanced the stability of PVC as obtained from the conductivity measurements using the 763 PVC Thermomat. The minimum amount of HCl release was obtained for the samples with Zn soaps and ERSO indicating a synergistic effect. Zn soaps having Zn(OH) 2 stabilized PVC better than pure Zn soaps.