Phosphonium salt exchanged montmorillonites were prepared from a reaction between alkyl triphenyl phosponium bromide and Na⁺-montmorillonite. Epoxy-clay nanocomposites were also prepared by using cycloaliphtic epoxy, methyl tetrahydrophthalic anhydride as a hardener, and triphenyl butyl phosphonium bromide as an accelerator. TEM and XRD results suggested that clay minerals in the epoxy-montmorillonites composite were intercalated. Mechanical properties such as tensile modulus and strength were measured and the effect of nanocomposite formation was also discussed.

포스포늄 염으로 교환된 몬모릴로나이트를 alkyl triphenyl phosponium bromide과 Na⁺-몬모릴로나이트로부터 제조하였다. 에폭시-점토 나노복합체는 cycloaliphtic epoxy, 산무수물 경화제 그리고 triphenyl butyl phosphonium bromide를 촉진제로 사용하여 제조하였다. TEM과 XRD자료로부터 점토가 에폭시-몬모릴로나이트 복합체 속에 층간삽입되었음을 확인하였다. 그 밖에 기계적 성질로서 인장율과 인장 강도를 측정하였으며 그 특성을 평가하였다.

Keywords: Na⁺-montmorillonite; nanocomposite; clay; intercalation; phosphonium salts; epoxy