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Abstract
A supramolecular material exhibiting self-healing properties was studied in this work.
The material is based on the mixture of two ABA-type oligomeric triblock copolymers,
the first consisting of positively charged end blocks and the second one of negatively
charged ones. Each oligomeric triblock consists of a soft middle block and soft end
blocks. When mixed together the resulting material phase-separates in an
electrostatically assembled phase with a high glass transition temperature (Tg) and
an uncharged phase with a low Tg. The mechanical and physical properties of the
resulting thermoplastic elastomer can be tuned by varying the size of the charged
blocks, using different polymer architectures and using different monomers. The
building block oligomers are synthesized via reversible addition-fragmentation chain
transfer (RAFT) polymerization using a bifunctional chain transfer agent and purified
by precipitation. Characterization was done by Modulated Differential Scanning
Calorimetry (MDSC), Dynamic Mechanical Thermal Analysis (DMTA) and
Transmission Electron Microscopy (TEM). The self-healing behaviour of the coating
was studied under optical microscope proving self-healing abilities after scratching.
The material is based on the mixture of two ABA-type oligomeric triblock copolymers,
the first consisting of positively charged end blocks and the second one of negatively
charged ones. Each oligomeric triblock consists of a soft middle block and soft end
blocks. When mixed together the resulting material phase-separates in an
electrostatically assembled phase with a high glass transition temperature (Tg) and
an uncharged phase with a low Tg. The mechanical and physical properties of the
resulting thermoplastic elastomer can be tuned by varying the size of the charged
blocks, using different polymer architectures and using different monomers. The
building block oligomers are synthesized via reversible addition-fragmentation chain
transfer (RAFT) polymerization using a bifunctional chain transfer agent and purified
by precipitation. Characterization was done by Modulated Differential Scanning
Calorimetry (MDSC), Dynamic Mechanical Thermal Analysis (DMTA) and
Transmission Electron Microscopy (TEM). The self-healing behaviour of the coating
was studied under optical microscope proving self-healing abilities after scratching.
| Original language | English |
|---|---|
| Title of host publication | Belgian Polymer Group Annual Meeting 2013 (BPG 2013), May 16-17 (2013), Houffalize, Belgium |
| Pages | 57 |
| Number of pages | 1 |
| Publication status | Published - 16 May 2013 |
Keywords
- supramolecular materials
- block copolymers
- thermal analysis
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Dive into the research topics of 'Smart supramolecular elastomers (P026)'. Together they form a unique fingerprint.Projects
- 1 Finished
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IWT540 (SIM1): NAPROM (Novel Active PRotection systems On Metals)
Terryn, H. (Administrative Promotor), De Graeve, I. (Co-Promotor), Hubin, A. (Co-Promotor), Van Mele, B. (Co-Promotor) & Van Assche, G. (Co-Promotor)
1/03/11 → 31/05/15
Project: Fundamental
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Annual Meeting of the Belgian Polymer Group (BPG 2013)
Torre Muruzabal, A. (Participant)
16 May 2013 → 17 May 2013Activity: Participating in or organising an event › Participation in conference
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Annual Meeting of the Belgian Polymer Group (BPG 2013)
Ghosh, A. K. (Participant)
16 May 2013 → 17 May 2013Activity: Participating in or organising an event › Participation in conference
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Annual Meeting of the Belgian Polymer Group (BPG 2013)
Van Lokeren, L. (Participant)
16 May 2013 → 17 May 2013Activity: Participating in or organising an event › Participation in conference