| 학회 | 한국고분자학회 |
| 학술대회 | 2002년 봄 (04/12 ~ 04/13, 서울대학교) |
| 권호 | 27권 1호, p.219 |
| 발표분야 | 복합재료 |
| 제목 | Synthesis and characterization of Exfoliated PS-co-PMMA/Na-MMT Nanocomposites via Emulsion Polymerization with AMPS |
| 초록 | ABSTRACT A method was described for synthesis of PS-co-PMMA/Na-MMT nanocomposites through an emulsion polymerization with 2-acrylamido-2-methyl-1-propanesulfonic acid(AMPS). The synthesis was carried out first by mixing AMPS, MMA and Styrene with pristine Na-MMT dispersed in water and then by adding MMA and Styrene subsequently. The nanocomposites were exfoliated during polymerization because AMPS made the polymer end-tethered on pristine Na-MMT. The nanocomposites were exfoliated up to the 3wt% content of pristine Na-MMT in the case of 1:1 monomer weight ratio(MMA:Styrene) by using XRD and TEM. The mechanical property and thermal stability of nanocomposites is increased comparing to neat copolymer. The storage moduli for the nanocomposites show a monotonic increase at all frequencies with increasing silicate content. All prepared nanocomposite materials exhibited apparent low-frequency plateaus in the linear viscoelastic moduli. Increasing the concentration of clay in the nanocomposite results in a large increase in the complex viscositey of the nanocomposite materials. At high clay loadings, no evidence of a low-frequency plateau complex viscosity is shown and significant shear thinning is observed. |
| 저자 | Mingzhe Xu1, 최용석2, 왕기현*, 김윤경, 정인재 |
| 소속 | 1한국과학기술원 화학공학과, 2*한화(연) |
| 키워드 | |
