Abstract
A novel cationic asphalt emulsifier of tetraethylenepentamine/formaldehyde modified lignin amine was synthesized by alkali lignin, tetraethylenepentamine and formaldehyde. The optimum reaction condition was obtained. The structure of the emulsifier was identified by FTIR. The synthesis process was monitored by online FTIR technique. Based upon the experimental data, a plausible reaction mechanism was proposed for the reaction. The target product has good surface activity and satisfactory emulsification effect. The prepared bituminous emulsion showed higher storage stability. The emulsifier belongs to slow-set asphalt emulsifier.
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