Universität zu Köln

Seifert, Julian, Roitsch, Stefan and Schmidt, Annette M. (2021). Covalent Hybrid Elastomers Based on Anisotropic Magnetic Nanoparticles and Elastic Polymers. ACS Appl. Polym. Mater., 3 (3). S. 1324 - 1338. WASHINGTON: AMER CHEMICAL SOC. ISSN 2637-6105

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Abstract

Particle-filled elastomers are ubiquitous composite materials with applications ranging from durable materials, such as tires, to smart actuators and sensor materials. By employing magnetic nanoparticles as multifunctional, inorganic cross-linkers, PDMS-based hybrid elastomers with a novel unique architecture and a defined type of particle-matrix interaction are obtained-a direct covalent coupling between magnetic and elastic properties. The resulting particle-cross-linked elastomers possess application potential due to their defined magnetomechanical coupling and their large extensibility. As the filler phase, spindle-shaped hematite nanoparticles with a silica shell are used, and the swelling, thermal, magnetic, and mechanical properties of the resulting particle-cross-linked elastomers are systematically evaluated and compared to the properties of analogous yet conventionally cross-linked particle-filled elastomers of a similar composition. Some unique features are found for the hybrid elastomers, such as a large strain at break of up to epsilon(B) approximate to 1700%, that are attributed to the exceptional architecture, combining a well-integrated network of long polymer chains that are interconnected by network nodes with a high cross-linker functionality formed by the anisotropic magnetic nanoparticles.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Seifert, Julian UNSPECIFIED UNSPECIFIED UNSPECIFIED Roitsch, Stefan UNSPECIFIED UNSPECIFIED UNSPECIFIED Schmidt, Annette M. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-567645
DOI:	10.1021/acsapm.0c00950
Journal or Publication Title:	ACS Appl. Polym. Mater.
Volume:	3
Number:	3
Page Range:	S. 1324 - 1338
Date:	2021
Publisher:	AMER CHEMICAL SOC
Place of Publication:	WASHINGTON
ISSN:	2637-6105
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language Materials Science, Multidisciplinary; Polymer Science Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/56764