| 학회 |
한국고분자학회 |
| 학술대회 |
2004년 가을 (10/08 ~ 10/09, 경북대학교) |
| 권호 |
29권 2호, p.473 |
| 발표분야 |
고분자 합성 |
| 제목 |
Composition Drifts in Copolymer Nanoparticles Prepared by Emulsion Polymerization using Microwave Irradiation |
| 초록 |
Emulsion polymerizations of polystyrene(PSt), poly(butyl acrylate)(PBA) and their copolymers under microwave irradiation were studied. Potassium persulfate(KPS), sodium lauryl sulfate(SLS) and t-dodecyl mercaptan(TDM) were used as an initiator, a surfactant and a chain transfer agent respectively. The effecs of various parameters of emulsion polymerization were analyzed for two methods; microwave irradiation and conventional heating. The resulting PSt/PBA copolymer compositions for overall St/BA monomer compositions were found to be considerably different in microwave irradiation and conventional heating. Copolymerization rate by microwave irradiation was increased compared to conventional heating These results indicates that microwave irradiation has a significant non-thermal effect on emulsion copolymerization so as to effectively accelerate and stabilize the polymerization process. Characteristics of copolymers were evaluated by differential scanning calorimeter(DSC) and Fourier transform infrared spectroscopy(FT-IR). Morphologies of the copolymerized particles were investigated by scanning electron microscopy(SEM).
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| 저자 |
유영재, 홍근혜, 최길영, 이재흥
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| 소속 |
한국화학(연) |
| 키워드 |
microwave; emulsion; composition drift; nanoparticle
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| E-Mail |
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