| Summary: | 碩士 === 國立勤益技術學院 === 化工與材料工程系 === 94 === Soap-free emulsion polymerization of methyl methacrylate (MMA) and methacrylic acid (MAA) was carried out in an water (or ethanol/water) media with potassium persulfate (KPS) as the initiator. Furthermore, Step-continuation space drag changed soap-free emulsion polymerization be come form change production. The particle size and morphology were investigated.
In the Soap-free emulsion polymerization, The change the parameters of reaction add cross-linking reagent to get the appropriate stipulation of the reaction and come out the proportion 40~50% in the particle augmentation quickly of phenomenon. To add methanol to solvent leads polymer agglomeration to be agglomerated at all and it’s agglomeration condition could prove that co-monomer is the master reason of system shake phenomenon.
In the step-continuation space drag changed soap-free emulsion polymerization, which didn’t added any emulsifier or stabilizer instance, the effects of reaction dispersion polymerization it successful used to monomer to simulate. It had high stability, the reaction condition is better than soap-free emulsion polymerization. It successfully produced cachet particle、nano-particle and the particle size breakthrough limit between emulsion polymerization and soap-free emulsion polymerization. At the stability state produce to micro-particle. Alphabet construction step-continuation space drag changed soap-free emulsion polymerization basic theory and effects.
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