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- W3216578095 abstract "Abstract A novel amphoteric asphalt emulsifier of octadecylbis(propanamide)-(3’-sodium phosphate-2’-hydroxypropyl)ammonium chloride was synthesised from the raw materials octadecylamine, acrylamide, epichlorohydrin and sodium dihydrogen phosphate. The tertiary amine octadecyl-bis(propanamide) was synthesised from octadecylamine and acrylamide (step 1). Sodium 3-chloro-2-hydroxypropyl phosphate (intermediate) was obtained from epichlorohydrin and sodium dihydrogen phosphate (step 2). The asphalt emulsifier was obtained from octadecyl-bis(propanamide)-tertiary amine and the intermediate by quaternisation reaction (step 3). The yield of the final product reached 94.90%. The structure was identified by FTIR, 1 H-NMR and elemental analysis. The critical micelle concentration of the product is 1.46 × 10 –5 mol L –1 . The surface tension at CMC is 37.78 mN ν –1 . The saturated adsorption amount of asphalt emulsifier is 2.72 × 10 –3 mmol ν –2 . The occupied area per asphalt emulsifier molecule at CMC is 0.611 nm 2 mol –1 . The surfactant is a fast-setting asphalt emulsifier." @default.
- W3216578095 created "2021-12-06" @default.
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- W3216578095 date "2021-11-01" @default.
- W3216578095 modified "2023-10-17" @default.
- W3216578095 title "Synthesis and Characterization of an Amphoteric Asphalt Emulsifier" @default.
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- W3216578095 doi "https://doi.org/10.1515/tsd-2021-2352" @default.
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