PNIPAM-co-polystyrene core-shell microgels: Structure, swelling behavior, and crystallization

Hellweg T, Dewhurst CD, Eimer W, Kratz K (2004)
LANGMUIR 20(11): 4330-4335.

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The present contribution presents the single-step preparation and characterization of poly(N-isopropyl acrylamide)-co-polystyrene core-shell microgels with varying polystyrene content. The swelling behavior of the particles is investigated using dynamic light scattering and differs significantly from the swelling behavior of poly(N-isopropyl acrylamide) homopolymer particles. The lower critical solution temperature is found to be shifted to lower temperatures upon increasing the polystyrene content of the particles. The core-shell structure of the particles is revealed by means of small angle neutron scattering (SANS) using the method of contrast variation. Additionally, the formation of mesoscopic crystals of these particles is investigated by means of scanning electron microscopy and also by SANS. The particles seem to have preferable properties with respect to crystallization compared to homopolymer microgels.
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Hellweg T, Dewhurst CD, Eimer W, Kratz K. PNIPAM-co-polystyrene core-shell microgels: Structure, swelling behavior, and crystallization. LANGMUIR. 2004;20(11):4330-4335.
Hellweg, T., Dewhurst, C. D., Eimer, W., & Kratz, K. (2004). PNIPAM-co-polystyrene core-shell microgels: Structure, swelling behavior, and crystallization. LANGMUIR, 20(11), 4330-4335. doi:10.1021/la0354786
Hellweg, T., Dewhurst, C. D., Eimer, W., and Kratz, K. (2004). PNIPAM-co-polystyrene core-shell microgels: Structure, swelling behavior, and crystallization. LANGMUIR 20, 4330-4335.
Hellweg, T., et al., 2004. PNIPAM-co-polystyrene core-shell microgels: Structure, swelling behavior, and crystallization. LANGMUIR, 20(11), p 4330-4335.
T. Hellweg, et al., “PNIPAM-co-polystyrene core-shell microgels: Structure, swelling behavior, and crystallization”, LANGMUIR, vol. 20, 2004, pp. 4330-4335.
Hellweg, T., Dewhurst, C.D., Eimer, W., Kratz, K.: PNIPAM-co-polystyrene core-shell microgels: Structure, swelling behavior, and crystallization. LANGMUIR. 20, 4330-4335 (2004).
Hellweg, Thomas, Dewhurst, CD, Eimer, W, and Kratz, K. “PNIPAM-co-polystyrene core-shell microgels: Structure, swelling behavior, and crystallization”. LANGMUIR 20.11 (2004): 4330-4335.
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