PP-g-MA/층상 실리케이트 나노복합체의 제조 및 물성에 관한 연구

김미정; 최민호; 구종민; 김상욱; 정인재; Mi-Jung Kim; Min-Ho Choi; Chong-Min Koo; Sang Ouk Kim; In-Jae Chung

HWAHAK KONGHAK, Vol.38, No.5, 691-697, October, 2000

Export Citation

PP-g-MA/층상 실리케이트 나노복합체의 제조 및 물성에 관한 연구

Study on the Preparation and the Properties of PP-g-MA/Layered Silicate Nanocomposites

김미정, 최민호¹, 구종민 ¹, 김상욱¹, 정인재 ^{1, †}

한국과학기술연구원 촉진수송분리막연구단, 서울 130-650
¹한국과학기술원 화학공학과, 대전 305-701

Mi-Jung Kim, Min-Ho Choi¹, Chong-Min Koo¹, Sang Ouk Kim¹, and In-Jae Chung^{1, †}

Center for Facilitated Transport Membranes, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul 130-650, Korea
¹Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, 373-1, Kusong-dong, Yusung-gu, Taejon 305-701, Korea

E-mail:

초록

고상 그라프트 공정을 통해서 maleic anhydride(MA)로 개질된 polypropylene(PP-g-MA)과 octadecyl ammonium ion으로 치환된 montmorillonite(C18M)를 용융법을 이용하여 PP-g-MA/층상 실리케이트 나노복합체를 제조하였다. PP-g-MA의 MA 그라프트율은 원소분석과 ¹H NMR로 측정한 결과 약 2.0% 였다. XRD와 TEM을 이용하여 나노복합체가 성공적으로 제조되었음을 확인하였다. PP-g-MA/층상 실리케이트 나노복합체의 인장강도와 인장탄성률이 PP나 PP-g-MA보다 높았고, 특히 인장탄성률의 경우 실리케이트의 함량이 3 wt%까지는 실리케이트의 함량에 따라 크게 증가하다가 5 wt% 이상에서는 거의 일정하게 유지됨을 알 수 있었다. 동적 저장 탄성률과 complex viscosity의 경우도 실리케이트의 함량이 1 wt%에서 PP-g-MA/층상 실리케이트 나노복합체가 PP-g-MA보다 훨씬 증가했으며, 그 이상의 함량에서는 천천히 증가함을 보였다. DSC를 이용하여 PP-g-MA 층상 실리케이트 나노복합체의 결정화 거동을 측정한 결과 PP-g-MA/층상 실리케이트 나노복합체의 결정화 속도가 PP-g-MA의 결정화 속도보다 빠름을 확인할 수 있었다.

PP-g-MA/layered silicate nanocomposites were prepared by melt intercalation method using PP modified with maleic anhydride (PP-g-MA) by solid-phase grafting process and montmorillonite modified with octadecyl ammonium ion (C18M). The graft level of PP-g-MA was about 2.0% when measured by ¹H NMR and elemental analysis. XRD patterns and TEM micrographs showed that PP-g-MA was successfully intercalated into C18M. A PP-g-MA/layered silicate nanocomposite had higher tensile strength and modulus than PP and PP-g-MA. Especially, it showed a dramatically increased tensile modulus up to the silicate content of 3wt% and the constant modulus over silicate content of 5wt%. Dynamic storage modulus and complex viscosity of the nanocomosites were higher than those of PP-g-MA. They increased considerably up to silicate content of 1 wt%, but increase slowly over this content like the tensile modulus. It was found that the nanocomposites showed the faster crystallization than PP-g-MA.

Keywords:Polypropylene;Maleic Anhydride;Montmorillonite;Nanocomposite

[References]

Gianneli EP, Adv. Mater., 8(1), 29 (1996)
Kojima Y, Usuki A, Kawasumi M, Okada A, Kurauchi T, Kamigaito O, J. Polym. Sci. A: Polym. Chem., 31, 983 (1993)
Kojima Y, Usuki A, Kawasumi M, Okada A, Kurauchi T, Kamigaito O, Kaji K, J. Polym. Sci. B: Polym. Phys., 32(4), 625 (1994)
Usuki A, Kojima Y, Kawasumi M, Okada A, Fukushima Y, Kurauchi T, Kamigaito O, J. Mater. Res., 8(5), 1179 (1993)
Messersmith PB, Giannelis EP, Chem. Mater., 6, 1719 (1994)
Lan T, Kaviratna PD, Pinnavaia TJ, J. Phys. Chem. Sol., 57, 1005 (1996)
Zilg C, Mulhaupt R, Finter J, Macromol. Chem. Phys., 200(3), 661 (1999)
Aranda P, Ruiz-Hitzky E, Chem. Mater., 4, 1395 (1992)
Kurokawa Y, Yasuda H, Oya A, J. Mater. Sci. Lett., 15(17), 1481 (1996)
Kawasumi M, Hasegawa N, Kato M, Usuki A, Okada A, Macromolecules, 30(20), 6333 (1997)
Garcia-Martinez JM, Laguna O, Areso S, Collar EP, J. Appl. Polym. Sci., 73(14), 2837 (1999)
Honam Chemical Co., Technical Report, "Study on the Development of Polymer Alloy by Nylon Polymer Blend," (1993)
Lagaly G, Solid State Ion., 22, 43 (1986)
Vaia RA, Teukolsky RK, Giannelis EP, Chem. Mater., 6, 1017 (1994)
Liu LM, Qi ZN, Zhu XG, J. Appl. Polym. Sci., 71(7), 1133 (1999)
Burnside SD, Ph.D. Thesis, Chapter 2, Cornell University, Ithaca, N.Y. (1996)
Shia D, Hui CY, Burnside SD, Giannelis EP, Polym. Compos., 19(5), 608 (1998)
Tanaka H, White JL, Polym. Eng. Sci., 20(14), 949 (1980)
Lakdawala K, Salovey R, Polym. Eng. Sci., 27(14), 1035 (1987)
Han CD, Sandford C, Yoo HJ, Polym. Eng. Sci., 18(18), 849 (1978)
Ferry JD, "Viscoelastic Properties of Polymer," John Wiley & Sons, Inc. (1980)
Aroon VS, "Rheology of Filled Polymer Systems," Kluwer Academic Publishers (1999)
Krishnamoorti R, Giannelis EP, Macromolecules, 30(14), 4097 (1997)

[Referenced By]

[Related Articles]

[1] Gianneli EP, Adv. Mater., 8(1), 29 (1996)

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

[3] Kojima Y, Usuki A, Kawasumi M, Okada A, Kurauchi T, Kamigaito O, Kaji K, J. Polym. Sci. B: Polym. Phys., 32(4), 625 (1994)

[4] Usuki A, Kojima Y, Kawasumi M, Okada A, Fukushima Y, Kurauchi T, Kamigaito O, J. Mater. Res., 8(5), 1179 (1993)

[5] Messersmith PB, Giannelis EP, Chem. Mater., 6, 1719 (1994)

[6] Lan T, Kaviratna PD, Pinnavaia TJ, J. Phys. Chem. Sol., 57, 1005 (1996)

[7] Zilg C, Mulhaupt R, Finter J, Macromol. Chem. Phys., 200(3), 661 (1999)

[8] Aranda P, Ruiz-Hitzky E, Chem. Mater., 4, 1395 (1992)

[9] Kurokawa Y, Yasuda H, Oya A, J. Mater. Sci. Lett., 15(17), 1481 (1996)

[10] Kawasumi M, Hasegawa N, Kato M, Usuki A, Okada A, Macromolecules, 30(20), 6333 (1997)

[11] Garcia-Martinez JM, Laguna O, Areso S, Collar EP, J. Appl. Polym. Sci., 73(14), 2837 (1999)

[12] Honam Chemical Co., Technical Report, "Study on the Development of Polymer Alloy by Nylon Polymer Blend," (1993)

[13] Lagaly G, Solid State Ion., 22, 43 (1986)

[14] Vaia RA, Teukolsky RK, Giannelis EP, Chem. Mater., 6, 1017 (1994)

[15] Liu LM, Qi ZN, Zhu XG, J. Appl. Polym. Sci., 71(7), 1133 (1999)

[16] Burnside SD, Ph.D. Thesis, Chapter 2, Cornell University, Ithaca, N.Y. (1996)

[17] Shia D, Hui CY, Burnside SD, Giannelis EP, Polym. Compos., 19(5), 608 (1998)

[18] Tanaka H, White JL, Polym. Eng. Sci., 20(14), 949 (1980)

[19] Lakdawala K, Salovey R, Polym. Eng. Sci., 27(14), 1035 (1987)

[20] Han CD, Sandford C, Yoo HJ, Polym. Eng. Sci., 18(18), 849 (1978)

[21] Ferry JD, "Viscoelastic Properties of Polymer," John Wiley & Sons, Inc. (1980)

[22] Aroon VS, "Rheology of Filled Polymer Systems," Kluwer Academic Publishers (1999)

[23] Krishnamoorti R, Giannelis EP, Macromolecules, 30(14), 4097 (1997)