20.500.12556/RUL-141240 Magnetic polydomain liquid crystal elastomers – synthesis and characterisation Although liquid crystal elastomers (LCE) are a fascinating class of materials with interesting thermomechanical properties of their own, the aim is to enhance their performance or add new features, e.g. response to external stimuli. The generally weak response of organic materials can be significantly intensified by mixing nano-sized magnetic particles into the host polymer matrix. An alternative approach is chemically coupling the nanoparticles to the elastomer. We achieved this by bonding functionalised magnetic nanoplatelets to the backbone of a main-chain LCE and obtained polydomain magnetic liquid crystal elastomers. We measured the magnetisation curves in samples, which were exposed to either small or large magnetic fields – their response being a consequence of partial particle reorientation or magnetic moment flipping. In contrast to the samples, which were exposed to small magnetic field and in which the remanent magnetisation can be reset to zero by heating the sample, the samples with flipped magnetisation within the platelets cannot be reversed into the original state. Coupling of magnetic and mechanical properties shows a slight magneto-elastic response at elevated temperatures and a significant inverse magneto-elastic effect: the magnetisation caused by mechanical stretching is almost equal to the magnetisation caused by an external magnetic field. elastomers magnetic elastomers ferromagnetic materials hysteresis magneto-elastic effect true false true Angleški jezik Ni določen Članek v reviji 2022-09-26 13:34:53 2022-09-26 13:34:54 2022-09-28 03:24:07 0000-00-00 00:00:00 2021 0 0 Str. 1815-1826 no. 13 Vol. 48 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 53 0267-8292 10.1080/02678292.2021.1901149 57620995 Magnetic_polydomain_liquid_crystal_elastomers_synthesis_and_characterisation.pdf Magnetic_polydomain_liquid_crystal_elastomers_synthesis_and_characterisation.pdf 1 3282810E925DA1E96DC51431E6687A9F a16384e053aeaede7c025cf0e5f00c2c327f80a934e300f37043775bae2df449 84adc3c3-3d8f-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=162197 https://www.tandfonline.com/doi/full/10.1080/02678292.2021.1901149 0 6e5f56f9-3d8f-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=162196 Fakulteta za matematiko in fiziko 0 0 0