Styrene 유화중합과 In-situ로 생성시킨 탄산칼륨 양이 Polystyrene의 열안정성에 미치는 영향

류성규; 김현영; 서길수

Polymer(Korea), Vol.20, No.5, 769-774, September, 1996

Effect of the Amounts of Calcium Carbonate Encapsulated by Polystyrene Through In-situ Emulsion Polymerization on the Thermal Properties of the Resulting Polystyrene

류성규, 김현영, 서길수

초록

Styrene과 염화칼슘 수용액을 비이온 계면활성제인 Span 60과 Tween 80으로 유화한 후, 탄산칼륨 수용액을 유화상태에 투입함으로써 탄산칼슘을 polystyrene의 매트릭스에 도입하였다. 이렇게 합성된 복합재료를 DSC와 TGA, SEM을 사용하여 도입된 탄산칼슘의 양에 따른 열적 특성과 전자현미경으로 입자의 표면을 관찰하였다. 그리고 X-선 회절로 polystyrene 속에서 합성한 탄산칼슘의 결정형태를 관찰하였다. Polystyrene 열안정성은 탄산칼슘 양이 증가함에 따라서 증가하였는데, 이것은 탄산칼슘의 결정형태가 vaterite에서 calcite로의 변화에 의한 것으로 사료된다.

Calcium carbonate encapsulated by polystyrene matrix was obtained by dropping a solution of potassium carbonate into the emulsified solutions of styrene and aqueous calcium chloride by non-ionic surfactants. Thermal properties of these materials with the amounts of calcium carbonate were investigated by DSC and TGA. The surface of calcium carbonate was observed by SEM, and crystal structures of calcium carbonate encapsulated by polystyrene was investigated using XRD. From these results, the increase of T_g of polystyrene encapsulating calcium carbonate was ascribed to the change of crystal structure of calcium carbonate from vaterite to calcite.

Keywords:emulsion;nonionic surfactant;styrene;calcium carbonate;vaterite

[References]

Fukano K, Kageyama E, J. Polym. Sci. A: Polym. Chem., 13, 1309 (1975)
Hosoi F, Makuuchi K, Kagyo Zairyo, 33, 60 (1985)
Yamaguchi T, Ono T, Ito H, Angew. Makromol. Chem., 32, 177 (1973)
Yamaguchi T, Ono T, Hasegawa H, Chem. Ind., 6, 748 (1975)
Yamaguchi T, Tanaka H, Ono T, Endo M, Ito H, Itabashi O, Kobunchi Ronbunshu, 32, 129 (1975)
Yamaguchi T, Ono T, Ohara S, Angew. Makromol. Chem., 53, 6 (1976)
Hergeth WD, Peller M, Hauptmann P, Acta Polym., 37, 486 (1986)
Hergeth WD, Starre P, Schmutzler K, Wartewig S, Polymer, 29, 1323 (1988)
Lyu SG, Bae MH, Sur GS, Polym.(Korea), 19(1), 95 (1995)
Greth GG, Wilson JE, J. Appl. Polym. Sci., 14, 135 (1961)
Bae MH, Lyu SG, Sur GS, 영남대학교 공업기술연구소 논문집, 22(1), 153 (1994)
Dana ES, Ford WE, "Mineralogy," p. 512, John Wiley & Sons (1949)
Kerr PF, "Optical Mineralogy," p. 209, McGraw-Hill (1959)
Oh JK, Lee HY, Kim SK, Chem. Ind. Technol., 12(5), 378 (1994)
Wray JL, Daniels F, J. Am. Chem. Soc., 79, 2031 (1957)
Xyla AG, Koutsoukos PG, J. Chem. Soc.-Faraday Trans., 83, 1477 (1987)
Didymus JM, Oliver P, Mann S, J. Chem. Soc.-Faraday Trans., 89, 2891 (1993)

[Referenced By]

[1] Fukano K, Kageyama E, J. Polym. Sci. A: Polym. Chem., 13, 1309 (1975)

[2] Hosoi F, Makuuchi K, Kagyo Zairyo, 33, 60 (1985)

[3] Yamaguchi T, Ono T, Ito H, Angew. Makromol. Chem., 32, 177 (1973)

[4] Yamaguchi T, Ono T, Hasegawa H, Chem. Ind., 6, 748 (1975)

[5] Yamaguchi T, Tanaka H, Ono T, Endo M, Ito H, Itabashi O, Kobunchi Ronbunshu, 32, 129 (1975)

[6] Yamaguchi T, Ono T, Ohara S, Angew. Makromol. Chem., 53, 6 (1976)

[7] Hergeth WD, Peller M, Hauptmann P, Acta Polym., 37, 486 (1986)

[8] Hergeth WD, Starre P, Schmutzler K, Wartewig S, Polymer, 29, 1323 (1988)

[9] Lyu SG, Bae MH, Sur GS, Polym.(Korea), 19(1), 95 (1995)

[10] Greth GG, Wilson JE, J. Appl. Polym. Sci., 14, 135 (1961)

[11] Bae MH, Lyu SG, Sur GS, 영남대학교 공업기술연구소 논문집, 22(1), 153 (1994)

[12] Dana ES, Ford WE, "Mineralogy," p. 512, John Wiley & Sons (1949)

[13] Kerr PF, "Optical Mineralogy," p. 209, McGraw-Hill (1959)

[14] Oh JK, Lee HY, Kim SK, Chem. Ind. Technol., 12(5), 378 (1994)

[15] Wray JL, Daniels F, J. Am. Chem. Soc., 79, 2031 (1957)

[16] Xyla AG, Koutsoukos PG, J. Chem. Soc.-Faraday Trans., 83, 1477 (1987)

[17] Didymus JM, Oliver P, Mann S, J. Chem. Soc.-Faraday Trans., 89, 2891 (1993)