Tough Materials Through Ionic Interactions

Show full item record



Permalink

http://hdl.handle.net/10138/333448

Citation

Salminen , L , Karjalainen , E , Aseyev , V & Tenhu , H 2021 , ' Tough Materials Through Ionic Interactions ' , Frontiers in Chemistry , vol. 9 , 721656 . https://doi.org/10.3389/fchem.2021.721656

Title: Tough Materials Through Ionic Interactions
Author: Salminen, Linda; Karjalainen, Erno; Aseyev, Vladimir; Tenhu, Heikki
Contributor: University of Helsinki, Polymers
University of Helsinki, Department of Chemistry
University of Helsinki, Department of Chemistry
Date: 2021-07-27
Language: eng
Number of pages: 15
Belongs to series: Frontiers in Chemistry
ISSN: 2296-2646
URI: http://hdl.handle.net/10138/333448
Abstract: This article introduces butyl acrylate-based materials that are toughened with dynamic crosslinkers. These dynamic crosslinkers are salts where both the anion and cation polymerize. The ion pairs between the polymerized anions and cations form dynamic crosslinks that break and reform under deformation. Chemical crosslinker was used to bring shape stability. The extent of dynamic and chemical crosslinking was related to the mechanical and thermal properties of the materials. Furthermore, the dependence of the material properties on different dynamic crosslinkers-tributyl-(4-vinylbenzyl)ammonium sulfopropyl acrylate (C4ASA) and trihexyl-(4-vinylbenzyl)ammonium sulfopropyl acrylate (C6ASA)-was studied. The materials' mechanical and thermal properties were characterized by means of tensile tests, dynamic mechanical analysis, differential scanning calorimetry, and thermogravimetric analysis. The dynamic crosslinks strengthened the materials considerably. Chemical crosslinks decreased the elasticity of the materials but did not significantly affect their strength. Comparison of the two ionic crosslinkers revealed that changing the crosslinker from C4ASA to C6ASA results in more elastic, but slightly weaker materials. In conclusion, dynamic crosslinks provide substantial enhancement of mechanical properties of the materials. This is a unique approach that is utilizable for a wide variety of polymer materials.
Subject: photopolymerization
dynamic crosslinker
crosslinking
reinforcement
tensile strength
GLASS-TRANSITION TEMPERATURE
MECHANICAL-PROPERTIES
PHYSICAL-PROPERTIES
CROSS-LINKING
STYRENE
IONOMERS
BEHAVIOR
POLYSTYRENE
COPOLYMERS
POLYMERIZATION
116 Chemical sciences
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
fchem_09_721656.pdf 2.667Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record