몬모릴로나이트-에폭시 나노복합재료 합성 및 특성

류정걸; 박근륙; 유성구; 류종하; 서길수

Polymer(Korea), Vol.22, No.2, 328-334, March, 1998

Export Citation

몬모릴로나이트-에폭시 나노복합재료 합성 및 특성

Synthesis and Characterization of Montmorillonite-Epoxy Nanocomposites

류정걸, 박근륙, 유성구, 류종하, 서길수

초록

스테아릴암모늄 브로마이드와 반응시킨 몬모릴로나이트를 에폭시수지 단량체(diglycidyl ether of bisphenol A (DGEBA))와 혼합한 후, 고온 경화 반응시켜 몬모릴로나이트-에폭시 나노복합재료를 합성하였다. 합성한 나노복합재료를 X-선 회절 실험과 투과전자현미경을 통하여 관찰한 결과 에폭시 매트릭스내에 몬모릴로나이트의 실리케이트층이 한층 한층 균일하게 분산되어 있음을 확인하였다. 그리고 각각의 층간거리는 100∼150Å정도였다. 열시차분석기를 이용하여 5 wt%의 스테아릴암모늄-몬모릴로나이트가 분산되어 있는 나노복합재료 합성시 중합열과 중합반응시 활성화 에너지를 확인한 결과 각각 462J/g과 98.2kJ/mol였다.

A montmorillonite-epoxy nanocomposite has been prepared by dispersing organically modified montmorillonite in an epoxy resin (diglycidyl ether of bisphenol A (DGEBA)) at elevated temperatures. Molecular dispersion of montmorillonite within the crosslinked epoxy matrix was verified using X-ray diffraction and transmission electron microscopy indicated that the final product contains a uniform dispersion of exfoliated 10 Å thin clay layers seperated by 100∼150Å of polyether polymer, thus verifying the nanocomposite structure. Differential scanning calorimetry studies of a nanocomposite containing 5wt% stearylammonium-montmorillonite indicated the heat of reaction and activation energy for the polymerization reaction to be 462 J/g and 98.2 kJ/mol, respectively.

Keywords:nanocomposite;intercalation;exfoliation;montmorillonite;epoxy

[References]

Theng BKG, "Formation and Properties of Clay-Polymer Complexes," Elsevier, New York (1979)
Theng BKG, "The Chemistry of Clay-Organic Reactions," Adam Hilger, Ltd., London (1974)
Blumstein A, J. Polym. Sci. A: Polym. Chem., 3, 2653 (1965)
Kanatzidis MG, Wu C, J. Am. Chem. Soc., 111, 4139 (1989)
Divigalpitiya WMR, Frindt RF, Morrison SR, J. Mater. Res., 6, 1103 (1991)
Pillion JE, Thompsen ME, Chem. Mater., 2, 222 (1991)
Okada A, Kawasumi M, Usuki A, Kojima Y, Kurauchi T, Kumigaito O, Mater. Res. Soc. Symp. Prod., 171, 45 (1990)
Kojima Y, Usuki A, Okada A, Kawasumi M, Okada A, Kurauchi T, Kumigaito O, J. Polym. Sci. A: Polym. Chem., 31, 983 (1993)
Usuki A, Kojima Y, Okada A, Kawasumi M, Okada A, Fukushima Y, Kurauchi T, Kumigaito O, J. Mater. Res., 8, 1179 (1993)
Wang MS, Pinnavaia TJ, Chem. Mater., 6, 468 (1994)
Lan T, Kaviratna PD, Pinnavaia TJ, Chem. Mater., 7, 2144 (1995)
Lan T, Kaviratna PD, Pinnavaia TJ, Chem. Mater., 6, 573 (1994)
Lan T, Pinnavaia TJ, Chem. Mater., 6, 2216 (1994)
Burnside SD, Giannelis EP, Chem. Mater., 7, 1597 (1995)
Giannelis EP, Adv. Mater., 8, 20 (1996)
Sur GS, Ryu JG, Lyu SG, Polym.(Korea) Abstract, 22(2), 139 (1997)
Ryu JG, Lyu SG, Shin BY, Sur GS, Polym.(Korea) Abstract, 22(2), 204 (1997)
Ryu JG, Lyu SG, Sur GS, Korean Ind. Eng. Chem. Abstract, 242 (1997)
Grim RE, "Clay Mineralogy," McGraw-Hill, New York (1953)
Private Communication with Dr. J.W. Lee
Prime RB, "Thermal Characterization of Polymeric Materials," E. Turi, Ed., Academic, New York (1981)
Prime RB, Polym. Eng. Sci., 13, 365 (1973)
Ozawa TJ, Therm. Anal., 2, 301 (1970)
Swarim SJ, Wims AM, Anal. Calorim, 4, 155 (1976)
Cizemciogly M, Gupta A, SAMPLE Q., Apr., 16 (1982)

[Referenced By]

[1] Theng BKG, "Formation and Properties of Clay-Polymer Complexes," Elsevier, New York (1979)

[2] Theng BKG, "The Chemistry of Clay-Organic Reactions," Adam Hilger, Ltd., London (1974)

[3] Blumstein A, J. Polym. Sci. A: Polym. Chem., 3, 2653 (1965)

[4] Kanatzidis MG, Wu C, J. Am. Chem. Soc., 111, 4139 (1989)

[5] Divigalpitiya WMR, Frindt RF, Morrison SR, J. Mater. Res., 6, 1103 (1991)

[6] Pillion JE, Thompsen ME, Chem. Mater., 2, 222 (1991)

[7] Okada A, Kawasumi M, Usuki A, Kojima Y, Kurauchi T, Kumigaito O, Mater. Res. Soc. Symp. Prod., 171, 45 (1990)

[8] Kojima Y, Usuki A, Okada A, Kawasumi M, Okada A, Kurauchi T, Kumigaito O, J. Polym. Sci. A: Polym. Chem., 31, 983 (1993)

[9] Usuki A, Kojima Y, Okada A, Kawasumi M, Okada A, Fukushima Y, Kurauchi T, Kumigaito O, J. Mater. Res., 8, 1179 (1993)

[10] Wang MS, Pinnavaia TJ, Chem. Mater., 6, 468 (1994)

[11] Lan T, Kaviratna PD, Pinnavaia TJ, Chem. Mater., 7, 2144 (1995)

[12] Lan T, Kaviratna PD, Pinnavaia TJ, Chem. Mater., 6, 573 (1994)

[13] Lan T, Pinnavaia TJ, Chem. Mater., 6, 2216 (1994)

[14] Burnside SD, Giannelis EP, Chem. Mater., 7, 1597 (1995)

[15] Giannelis EP, Adv. Mater., 8, 20 (1996)

[16] Sur GS, Ryu JG, Lyu SG, Polym.(Korea) Abstract, 22(2), 139 (1997)

[17] Ryu JG, Lyu SG, Shin BY, Sur GS, Polym.(Korea) Abstract, 22(2), 204 (1997)

[18] Ryu JG, Lyu SG, Sur GS, Korean Ind. Eng. Chem. Abstract, 242 (1997)

[19] Grim RE, "Clay Mineralogy," McGraw-Hill, New York (1953)

[20] Private Communication with Dr. J.W. Lee

[21] Prime RB, "Thermal Characterization of Polymeric Materials," E. Turi, Ed., Academic, New York (1981)

[22] Prime RB, Polym. Eng. Sci., 13, 365 (1973)

[23] Ozawa TJ, Therm. Anal., 2, 301 (1970)

[24] Swarim SJ, Wims AM, Anal. Calorim, 4, 155 (1976)

[25] Cizemciogly M, Gupta A, SAMPLE Q., Apr., 16 (1982)