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| Preparation of Water Soluble Essence Microcapsule Used in Paper |
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| DOI：10.11980/j.issn.11-1967/TS.2015.04.007 |
| Key Words:interfacial polymerization polyamide water soluble essence microcapsule |
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| Abstract:Polyamide microcapsule was synthesized by interfacial polymerization using terephthaloyl chloride and ethylenediamine as monomers, pear essenceas core. The microcapsule was analyzed by optical microscope, SEM and TGA, and the effects of emulsifier dosages, stirring speed, core/ wall molar ratio and pH value on the quality and properties of microcapsules were studied. The results indicated that, the best preparation conditions for microcapsule: dosage of emulsifier 2%, the stirring speed 2000 r/min, pH=8～9, core /wall ratio 1∶1. Under this condition emulsification effect was good, the emulsion had good stability and uniform particle size, average emulsion particle size was 1.8 μm easured by Motic Images 2000. SEM analysis showed that of most of synthetic microcapsules had spherical structure, the average particle size was about 2 μm; TGA analysis showed that the synthetic polyamide had good covering effect on the core material of the performancewall polymer was stable, it began to break down when temperature reached to 420℃. |
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