Synthesis and characterization of dialkanolamides from castor oil (Ricinus communis) as nonionic surfactant
| Autor: | M Anwar, T D Wahyuningsih |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Azelaic acid 010304 chemical physics Ricinoleic acid 02 engineering and technology 01 natural sciences Hydrolysis Potassium permanganate chemistry.chemical_compound Dicarboxylic acid 020401 chemical engineering Pulmonary surfactant chemistry Castor oil Critical micelle concentration 0103 physical sciences medicine 0204 chemical engineering medicine.drug Nuclear chemistry |
| Zdroj: | IOP Conference Series: Earth and Environmental Science. 101:012037 |
| ISSN: | 1755-1315 1755-1307 |
| DOI: | 10.1088/1755-1315/101/1/012037 |
| Popis: | Nonionic surfactant of dialkanolamide derivates was synthesized and characterized from castor oil (Ricinus comunnis). Ricinoleic acid was isolated from castor oil by hydrolysis in alkaline (KOH) condition at 65 °C. Oxidation of ricinoleic acid by dilute potassium permanganate (KMnO4) in alkaline condition at 75-90 °C gave dicarboxylic acid which was then reacted with ethanolamine at 140-160 °C for 6 hours. The product was recrystallized with isopropanol, and the structure elucidation was performed by FTIR, 1HNMR spectrometer, and GC-MS with silylation method. Characterization of surfactants was carried out by surface tension measurement (capillary rise method), Critical Micelle Concentration (CMC) based on turbidity method and calculation of Hydrophilic-Lipophilic Balance (HLB) value with Griffin method and Bancroft rule. The result showed that ricinoleic acid in castor oil is 86.19 % and it is oxidation give an azelaic acid and octanedioic acid in 53.25 %. Amidation of a dicarboxylic acid and ethanolamine at 140-160 °C for 6 hours yielded of N1,N9-bis(2-hydroxyethyl)nona diamide in 49.35 %. Surfactant characterization indicates that dialkanolamide derivates can be used as a surfactant due to its ability to reduce the surface tension of ethanol with CMC at 1.2 g/L, HLB value is 5.58 and can be used as emulsifier water in oil (W/O). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|