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Subtle devising of electro-induced shape memory behavior for cellulose/graphene aerogel nanocomposite
Xueliang Xiao1, Xiayan Huang1, Ao Wang1
1Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, PR China.
Carbohydrate Polymers
|January 25, 2022
Summary
This study developed advanced cellulose/graphene-oxide aerogels. Thermally reduced aerogels showed enhanced mechanical properties and shape memory recovery, particularly under combined electrical and mechanical stimulation.
Area of Science:
- Materials Science
- Nanotechnology
- Polymer Science
Background:
- Cellulose-based aerogels offer tunable properties.
- Graphene oxide (GO) incorporation enhances functionality.
- Investigating reduction methods is crucial for material performance.
Purpose of the Study:
- To prepare and characterize cellulose/graphene-oxide aerogels using different reduction methods.
- To evaluate the impact of reduction processes on mechanical, electrical, and structural properties.
- To explore shape memory behavior in these novel aerogels.
Main Methods:
- Facile preparation of cellulose/graphene-oxide aerogels.
- Chemical reduction (CrGO) and thermal reduction (TrGO) of GO.
- Characterization using FT-IR, EDS, SEM, Mercury porosimetry, and BET analysis.
Main Results:
- Reduction processes confirmed by C/O ratio analysis.
- Porous structures visualized by SEM; mesoporous/nanostructure detailed by porosimetry and BET.
- Improved mechanical properties (Young's modulus) with increased C/O ratio.
- Low thermal and moderate electrical conductivity observed.
- Optimal shape recovery achieved for TrGO aerogels under simultaneous mechanical force and electrical field.
Conclusions:
- Reduction method significantly influences aerogel properties.
- Thermally reduced aerogels exhibit superior mechanical and shape memory performance.
- These aerogels show potential for applications requiring mechanical robustness and stimuli-responsiveness.
