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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 35: Poster Session II
CPP 35.58: Poster
Wednesday, March 29, 2023, 11:00–13:00, P1
Architecture effect on the behavior of gradient and triblock terpolymer OEGMA-BuMA-DEGMA — •Wenqi Xu1, Eirini Melampianaki1, Feifei Zheng1, Anna P. Constantinou2, Theoni K. Georgiou2, and Christine M. Papadakis1 — 1TUM School of Natural Sciences, Technical University of Munich, Garching, Germany — 2Department of Materials, Imperial College, London, England
Triblock terpolymers with hydrophilic, hydrophobic, and thermoresponsive blocks feature micellization, aggregation, and gelation in response to temperature changes and are therefore promising in various biomedical applications [1]. Gradient terpolymers can serve as a cost-effective alternative. Here, we investigate a triblock and a gradient terpolymer composed of hydrophilic oligo(ethylene glycol) methyl ether methacrylate (OEGMA), hydrophobic n-butyl methacrylate (BuMA), and thermoresponsive di(ethylene glycol) methyl ether methacrylate (DEGMA). Dynamic light scattering and synchrotron small-angle X-ray scattering revealed that the gradient terpolymer forms spherical micelles, whereas the triblock terpolymer is apt to form elongated micelles. With increasing temperature, the former grow in radius and the latter in length, which may be due to the increasing hydrophobicity of the DEGMA block.
[1] A. P. Constantinou, L. Wang, S. Wang, T. K. Georgiou, Polym. Chem. 2022., doi: 10.1039/D2PY01097F