Quantitative Analysis of “Polymer-Balls” in Aqueous Solutions by Small-Angle Neutron Scattering

Mitsuhiro Shibayama; Satoshi Okabe; Michihiro Nagao; Shinji Sugihara; Sadahito Aoshima; Tamotsu Harada; Hideki Matsuoka

Macromolecular Research, Vol.10, No.6, 311-317, December, 2002

Mitsuhiro Shibayama^†, Satoshi Okabe, Michihiro Nagao, Shinji Sugihara¹, Sadahito Aoshima¹, Tamotsu Harada², and Hideki Matsuoka²

Neutron Scattering Laboratory, Institute for Solid State Physics, University of Tokyo, Tokai, Ibaraki, 319-1106, Japan
¹Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
²Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 606-8501, Japan

E-mail:

The quantitative analysis of polymer micelles consisting of amphiphilic block copolymers was carried out by small-angle neutron scattering (SANS). The block copolymers, made of poly(2-ethoxyethyl vinyl ether-b-2-hydroxyethyl vinyl ether) (poly(EOVE-b-HOVE)), exhibited a sharp morphological transition from a homogeneous solution to a micelle structure with increasing temperature. This transition is accompanied by a formation of spherical domains of poly(EOVE) with a radius around 200 Å. The variations of the size and its distribution of the domains were investigated as a function of polymer concentration and temperature. The validity of SANS analysis, including the wavelength-and incident-beam-smearing effects of the SANS instrument, was examined with a pre-calibrated polystyrene latex.

Keywords:SANS;block copolymers;poly(EOVE-b-HOVE);micelle;morphological transition

[References]

Molau GE, Block Polymers, S.L. Aggarwal, Ed., Plenum Press, N.Y. (1970)
Helfand E, Wasserman ZR, Developments in Block Copolymers, I. Goodman, Ed., Applied Science, New York (1982)
Shibayama M, Hashimoto T, Kawai H, Macromolecules, 16, 1093 (1983)
Mcconnell GA, Gast AP, Macromolecules, 30(3), 435 (1997)
MCconnell GA, Gast AP, Huang JS, Smith SD, Phys. Rev. Lett., 71, 2102 (1993)
Huang CI, Lodge TP, Macromolecules, 31(11), 3556 (1998)
Hanley KJ, Lodge TP, Huang CI, Macromolecules, 33(16), 5918 (2000)
Zhang LF, Eisenberg A, Science, 268(5218), 1728 (1995)
Alexandridis P, Olsson U, Lindman B, Langmuir, 14(10), 2627 (1998)
Aoshima S, Hashimoto K, J. Polym. Sci. A: Polym. Chem., 39(5), 746 (2001)
Aoshima S, Sugihara S, J. Polym. Sci. A: Polym. Chem., 38(21), 3962 (2000)
Sugihara S, Aoshima S, Koubunshi Ronbunshu, 58, 304 (2001)
Sugihara S, Matsuzono SI, Sakai H, Abe M, Aoshima S, J. Polym. Sci. A: Polym. Chem., 39(18), 3190 (2001)
Hashimoto H, Fujimura M, Hashimoto T, Kawai H, Macromolecules, 14, 844 (1981)
Okabe S, Sugihara S, Aoshima S, Shibayama M, Macromolecules, 35, 8139 (2002)
Matsuoka H, Kakigami K, Ise N, Kobayashi Y, Machitani Y, Kikuchi T, Kato T, Proc. Natl. Acad. Sci. USA, 88, 6618 (1991)
Matsuoka H, Ise N, Chemtract, 4, 53 (1993)
Nagao M, Okabe S, Shibayama M, Matsuoka H, Activity Report on Neutron Scattering Res., 8, 39 (2001)
Ito Y, Imai M, Takahashi S, Physica B, 213-214, 889 (1995)
Schwahn D, Takeno H, Willner L, Hasegawa H, Jinnai H, Hashimoto T, Imai M, Phys. Rev. Lett., 73, 3427 (1994)
Alberts B, Bray D, Lewis J, Raff M, Roberts K, Watson JD, Molecular Biology of the Cell, Garland Publishing, Inc., New York (1994)
Shibayama M, Morimoto M, Nomura S, Macromolecules, 27(18), 5060 (1994)
Shibayama M, Mizutani S, Nomura S, Macromolecules, 29(6), 2019 (1996)

[1] Molau GE, Block Polymers, S.L. Aggarwal, Ed., Plenum Press, N.Y. (1970)

[2] Helfand E, Wasserman ZR, Developments in Block Copolymers, I. Goodman, Ed., Applied Science, New York (1982)

[3] Shibayama M, Hashimoto T, Kawai H, Macromolecules, 16, 1093 (1983)

[4] Mcconnell GA, Gast AP, Macromolecules, 30(3), 435 (1997)

[5] MCconnell GA, Gast AP, Huang JS, Smith SD, Phys. Rev. Lett., 71, 2102 (1993)

[6] Huang CI, Lodge TP, Macromolecules, 31(11), 3556 (1998)

[7] Hanley KJ, Lodge TP, Huang CI, Macromolecules, 33(16), 5918 (2000)

[8] Zhang LF, Eisenberg A, Science, 268(5218), 1728 (1995)

[9] Alexandridis P, Olsson U, Lindman B, Langmuir, 14(10), 2627 (1998)

[10] Aoshima S, Hashimoto K, J. Polym. Sci. A: Polym. Chem., 39(5), 746 (2001)

[11] Aoshima S, Sugihara S, J. Polym. Sci. A: Polym. Chem., 38(21), 3962 (2000)

[12] Sugihara S, Aoshima S, Koubunshi Ronbunshu, 58, 304 (2001)

[13] Sugihara S, Matsuzono SI, Sakai H, Abe M, Aoshima S, J. Polym. Sci. A: Polym. Chem., 39(18), 3190 (2001)

[14] Hashimoto H, Fujimura M, Hashimoto T, Kawai H, Macromolecules, 14, 844 (1981)

[15] Okabe S, Sugihara S, Aoshima S, Shibayama M, Macromolecules, 35, 8139 (2002)

[16] Matsuoka H, Kakigami K, Ise N, Kobayashi Y, Machitani Y, Kikuchi T, Kato T, Proc. Natl. Acad. Sci. USA, 88, 6618 (1991)

[17] Matsuoka H, Ise N, Chemtract, 4, 53 (1993)

[18] Nagao M, Okabe S, Shibayama M, Matsuoka H, Activity Report on Neutron Scattering Res., 8, 39 (2001)

[19] Ito Y, Imai M, Takahashi S, Physica B, 213-214, 889 (1995)

[20] Schwahn D, Takeno H, Willner L, Hasegawa H, Jinnai H, Hashimoto T, Imai M, Phys. Rev. Lett., 73, 3427 (1994)

[21] Alberts B, Bray D, Lewis J, Raff M, Roberts K, Watson JD, Molecular Biology of the Cell, Garland Publishing, Inc., New York (1994)

[22] Shibayama M, Morimoto M, Nomura S, Macromolecules, 27(18), 5060 (1994)

[23] Shibayama M, Mizutani S, Nomura S, Macromolecules, 29(6), 2019 (1996)