The Epoxidized Vietnam Rubber Seed Oil as a Secondary Plasticizer/Thermal Stabilizer in PVC Processing

The epoxidized rubber seed oil (EeRSO) was a mixture of epoxidized triglyceride, and epoxidized methyl ester of free fatty acids was used as a secondary plasticizer for PVC. An increase in tensile properties was observed by substituting the 10 phr DOP plasticizer with the EeRSO in PVC formulation. A...

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Bibliographic Details
Published inInternational Journal of Polymer Science Vol. 2021; pp. 1 - 8
Main Authors Thuy, Nguyen Thi, Duc, Vu Minh, Liem, Nguyen Thanh
Format Journal Article
LanguageEnglish
Published New York Hindawi 2021
John Wiley & Sons, Inc
Hindawi Limited
Wiley
Subjects
Blistering
Composite materials
Fatty acids
Hardness
Heat
Heat stabilizers
Hexanes
Laboratories
Leaching
Mechanical properties
Morphology
Plasticizers
Polymers
Rubber
Seeds
Sunflower oil
Sunflowers
Tensile properties
Tensile strength
Thermal properties
Thermal stability
Thermodynamic properties
Thermogravimetric analysis
Triglycerides
Vaporization
Vegetable oils
Vitamin E
Vietnam
China
Japan
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Summary:The epoxidized rubber seed oil (EeRSO) was a mixture of epoxidized triglyceride, and epoxidized methyl ester of free fatty acids was used as a secondary plasticizer for PVC. An increase in tensile properties was observed by substituting the 10 phr DOP plasticizer with the EeRSO in PVC formulation. A leaching test was performed in five media to evaluate the plasticizing effect. The sample weight increased slightly after soaking in water and 30 wt.% acetic solution, decreased slightly in 10 wt.% KOH solution, and reduced sharply and strongly in sunflower oil and n-hexane. The 10 phr EeRSO in PVC formulation has presented an improvement in migration, volatilization characteristics, and thermal property of PVC. After 72 hours of soaking in n-hexane, the shore A hardness of the EeRSO plasticized PVC sample increased by 14.5% while the PVC sample without EeRSO was blistered and its shore A hardness could not be measured. This was the clearest evidence for the positive effect of EeRSO as a secondary plasticizer. The morphology of the fractured surface of the samples after immersing in n-hexane was studied by using scanning electron microscopy. Thermogravimetric analysis showed the role of EeRSO in significant improvement in thermal stability. In general, EeRSO not only acts as a primary plasticizer to improve the migration, extraction, and volatilization characteristics but also contributes to the thermal stability of PVC.
ISSN:1687-9422
1687-9430
DOI:10.1155/2021/5525547