Thermal stability of epoxidized soybean oil and its absorption and migration in poly(vinylchloride)
| Autor: | Bin Sun, Di Mao, Bin Li, Bharat I. Chaudhary, Jeffrey M. Cogen, Dong-ming Yuan, Gan-ce Dai, Chun-Yin Shen |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Polymers and Plastics Rheometer Plasticizer General Chemistry Epoxidized soybean oil chemistry.chemical_compound chemistry Chemical engineering Materials Chemistry medicine Thermal stability Absorption (chemistry) Solubility Swelling medicine.symptom Composite material Saturation (chemistry) |
| Zdroj: | Polymer Engineering & Science. 53:1645-1656 |
| ISSN: | 0032-3888 |
| DOI: | 10.1002/pen.23417 |
| Popis: | Thermal analyses of epoxidized soybean oil (ESO) were conducted and showed that it was stable up to temperatures as high as 240–260°C in air-free environment. The solubility and transport characteristics of ESO in poly(vinylchloride) (PVC) were also investigated under various conditions. The absorption study showed that the resin had a void volume of ∼0.3 cm3/g. Furthermore, ESO was found to be sufficiently soluble in the PVC matrix to function as an effective plasticizer, with equilibrium solubility of 72 g/100 g PVC at 80°C and 163 g/100 g PVC at 120°C. The absorption of ESO in PVC grains was a three step process comprising “induction,” “swelling,” and “saturation” periods. Torque rheometer studies showed that higher mixer temperature and/or speed facilitated uptake of plasticizer in PVC and ultimate fusion. Migration studies of plasticized and stabilized PVC compositions showed no change in mass at 40°C, but increasingly greater mass loss as the temperature was raised up to 120°C. POLYM. ENG. SCI., 2013. © 2012 Society of Plastics Engineers |
| Databáze: | OpenAIRE |
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