Linearly thermoresponsive core-shell microgels: Towards a new class of nanoactuators

Zeiser M, Freudensprung I, Hellweg T (2012)
Polymer 53(26): 6096-6101.

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In this study we present novel core shell microgels, with a shell made of poly(N-n-propylacrylamide) (pNNPAM) and a core consisting of poly(N-iso-propylmethacrylamide) (pNIPMAM), exhibiting a unique linear temperature response. The effect is produced by the large LCST gap of 23 degrees C between the shell- and the core-forming polymer. We demonstrate that the shell exhibits a temperature induced de-swelling process that is almost independent of the swelling properties of the core. Furthermore the active collapse of the shell forces a collapse of the core (which is known as the so-called "corset-effect"). In a region between 25 degrees C and 41 degrees C the response of the particles is directly proportional to the temperature. Moreover, the core properties were systematically varied, revealing the possibility to linearly change the magnitude of the linear swelling. Hence, these particles are very promising as piezo-like linear nanoactuators. (C) 2012 Elsevier Ltd. All rights reserved.
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Zeiser M, Freudensprung I, Hellweg T. Linearly thermoresponsive core-shell microgels: Towards a new class of nanoactuators. Polymer. 2012;53(26):6096-6101.
Zeiser, M., Freudensprung, I., & Hellweg, T. (2012). Linearly thermoresponsive core-shell microgels: Towards a new class of nanoactuators. Polymer, 53(26), 6096-6101. doi:10.1016/j.polymer.2012.10.001
Zeiser, M., Freudensprung, I., and Hellweg, T. (2012). Linearly thermoresponsive core-shell microgels: Towards a new class of nanoactuators. Polymer 53, 6096-6101.
Zeiser, M., Freudensprung, I., & Hellweg, T., 2012. Linearly thermoresponsive core-shell microgels: Towards a new class of nanoactuators. Polymer, 53(26), p 6096-6101.
M. Zeiser, I. Freudensprung, and T. Hellweg, “Linearly thermoresponsive core-shell microgels: Towards a new class of nanoactuators”, Polymer, vol. 53, 2012, pp. 6096-6101.
Zeiser, M., Freudensprung, I., Hellweg, T.: Linearly thermoresponsive core-shell microgels: Towards a new class of nanoactuators. Polymer. 53, 6096-6101 (2012).
Zeiser, Michael, Freudensprung, Ines, and Hellweg, Thomas. “Linearly thermoresponsive core-shell microgels: Towards a new class of nanoactuators”. Polymer 53.26 (2012): 6096-6101.
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