Preparation of monodispersed PNIPAm/silica composites and characterization of their thermal behaviors

Yong-Geun Lee; Chang-Yong Park; Kyung-Ho Song; Sung-Soo Kim; Seong-Geun Oh

Journal of Industrial and Engineering Chemistry, Vol.18, No.2, 744-751, March, 2012

DOI10.1016/j.jiec.2011.11.117 Export Citation

Preparation of monodispersed PNIPAm/silica composites and characterization of their thermal behaviors

Yong-Geun Lee, Chang-Yong Park, Kyung-Ho Song, Sung-Soo Kim, and Seong-Geun Oh^†

Department of Chemical Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea

E-mail:

Two types of thermosensitive poly(N-isopropylacrylamide) (PNIPAm)-silica organic/inorganic hybrid particles were successfully prepared in aqueous solution through a facile synthetic process. Silane coupler of vinyl organic groups connects the PNIPAm to silica. First, hybrid spheres were prepared by grafting PNIPAm polymers to VTMS (vinyl trimethoxysilane) silica spheres. The thickness of polymer shell on the silica surfaces could be easily controlled by varying the concentrations of NIPAm monomer. Second, another type of hybrid particle was fabricated by encapsulating PNIPAm polymer with silica materials. The PNIPAm polymers were completely encapsulated by silica shell. The morphologies and shell thickness were characterized through SEM and TEM. The variations of phase transition temperature of PNIPAm were measured using DSC.

Keywords:Hybrid materials;Silica;PNIPAm;Vinyl trimethoxysilane;Phase transition temperature

[References]

Zhang YD, Lee SH, Yoonessi M, Liang KW, Pittman CU, Polymer, 47(9), 2984 (2006)
Strachotova B, Strachota A, Uchman M, Slouf M, Brus J, Plestil J, Matejka L, Polymer, 48(6), 1471 (2007)
Caruso F, Spasova M, Susha A, Giersig M, Caruso RA, Chem. Mater., 13, 109 (2001)
Fleming MS, Mandal TK, Walt DR, Chem. Mater., 13, 2210 (2001)
Zhu J, Morgan AB, Lamelas FJ, Wilkie CA, Chem. Mater., 13, 3774 (2001)
Zhou J, Zhang SW, Qiao XG, Li XQ, Wu LM, J. Polym. Sci. A: Polym. Chem., 44(10), 3202 (2006)
Qi L, Chapel JP, Castaing JC, Fresnais J, Berret JF, Langmuir, 23(24), 11996 (2007)
Hu YQ, Wu HP, Gonsalves KE, Merhari L, Microelectron. Eng., 56, 289 (2001)
Bergna HE, Surf. Sci. Ser., 131 (2006)
Iler RK, The Chemistry of Silica, Wiley, New York (1979)
Sto¨ ber W, Fink A, Bohn E, J. Colloid Interface Sci., 26, 62 (1968)
Ge H, Ding YW, Ma CC, Zhang GZ, J. Phys. Chem. B, 110(41), 20635 (2006)
Fang Y, Bai CL, Zhang Y, Chem. Commun., 7, 804 (2004)
Li YT, Lokitz BS, McCormick CL, Macromolecules, 39(1), 81 (2006)
Lynch I, Dawson KA, J. Phys. Chem. B, 108(30), 10893 (2004)
Zhang K, Chen HT, Chen X, Chen ZM, Cui ZC, Yang B, Macromol. Mater. Eng., 288, 380 (2003)
Tissot I, Novat C, Lefebvre F, Bourgeat-Lami E, Macromolecules, 34(17), 5737 (2001)
Reculusa S, Poncet-Legrand C, Ravaine S, Minogotaud C, Duguet E, Bourgeat-Lami E, Chem. Mater., 14, 2354 (2002)
Derro A, Reculusa S, Bourgeat-Lami E, Duguet E, Ravaine S, Colloids Surf. A., 284, 78 (2006)
Barthlet S, Mingotaud C, Bourgeat-Lami E, Duguet E, Ravaine R, Nano Lett., 4, 1677 (2004)
Barthet C, Hickey AJ, Cairns DB, Armes SP, Adv. Mater., 11(5), 408 (1999)
Lee YG, Park JH, Oh C, Oh SG, Kim YC, Langmuir, 23(22), 10875 (2007)
Smith B, Infrared Spectral Interpretation: A Systematic Approach, CRC Press, Florida (1999)
Kubota K, Fujishige S, Ando I, J. Phys. Chem., 94, 5154 (1990)
Brinker CJ, Scherer GW, Sol-Gel Science, Academic Press, San Diego (1990)

[Referenced By]

[Related Articles]

[1] Zhang YD, Lee SH, Yoonessi M, Liang KW, Pittman CU, Polymer, 47(9), 2984 (2006)

[2] Strachotova B, Strachota A, Uchman M, Slouf M, Brus J, Plestil J, Matejka L, Polymer, 48(6), 1471 (2007)

[3] Caruso F, Spasova M, Susha A, Giersig M, Caruso RA, Chem. Mater., 13, 109 (2001)

[4] Fleming MS, Mandal TK, Walt DR, Chem. Mater., 13, 2210 (2001)

[5] Zhu J, Morgan AB, Lamelas FJ, Wilkie CA, Chem. Mater., 13, 3774 (2001)

[6] Zhou J, Zhang SW, Qiao XG, Li XQ, Wu LM, J. Polym. Sci. A: Polym. Chem., 44(10), 3202 (2006)

[7] Qi L, Chapel JP, Castaing JC, Fresnais J, Berret JF, Langmuir, 23(24), 11996 (2007)

[8] Hu YQ, Wu HP, Gonsalves KE, Merhari L, Microelectron. Eng., 56, 289 (2001)

[9] Bergna HE, Surf. Sci. Ser., 131 (2006)

[10] Iler RK, The Chemistry of Silica, Wiley, New York (1979)

[11] Sto¨ ber W, Fink A, Bohn E, J. Colloid Interface Sci., 26, 62 (1968)

[12] Ge H, Ding YW, Ma CC, Zhang GZ, J. Phys. Chem. B, 110(41), 20635 (2006)

[13] Fang Y, Bai CL, Zhang Y, Chem. Commun., 7, 804 (2004)

[14] Li YT, Lokitz BS, McCormick CL, Macromolecules, 39(1), 81 (2006)

[15] Lynch I, Dawson KA, J. Phys. Chem. B, 108(30), 10893 (2004)

[16] Zhang K, Chen HT, Chen X, Chen ZM, Cui ZC, Yang B, Macromol. Mater. Eng., 288, 380 (2003)

[17] Tissot I, Novat C, Lefebvre F, Bourgeat-Lami E, Macromolecules, 34(17), 5737 (2001)

[18] Reculusa S, Poncet-Legrand C, Ravaine S, Minogotaud C, Duguet E, Bourgeat-Lami E, Chem. Mater., 14, 2354 (2002)

[19] Derro A, Reculusa S, Bourgeat-Lami E, Duguet E, Ravaine S, Colloids Surf. A., 284, 78 (2006)

[20] Barthlet S, Mingotaud C, Bourgeat-Lami E, Duguet E, Ravaine R, Nano Lett., 4, 1677 (2004)

[21] Barthet C, Hickey AJ, Cairns DB, Armes SP, Adv. Mater., 11(5), 408 (1999)

[22] Lee YG, Park JH, Oh C, Oh SG, Kim YC, Langmuir, 23(22), 10875 (2007)

[23] Smith B, Infrared Spectral Interpretation: A Systematic Approach, CRC Press, Florida (1999)

[24] Kubota K, Fujishige S, Ando I, J. Phys. Chem., 94, 5154 (1990)

[25] Brinker CJ, Scherer GW, Sol-Gel Science, Academic Press, San Diego (1990)