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Multiwalled carbon nanotube reinforced bio-based benzoxazine/epoxy composites with NIR-laser stimulated shape memory effects
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Document Title
Multiwalled carbon nanotube reinforced bio-based benzoxazine/epoxy composites with NIR-laser stimulated shape memory effects
Author
Prasomsin W., Parnklang T., Sapcharoenkun C., Tiptipakorn S., Rimdusit S.
Name from Authors Collection
Affiliations
Polymer Engineering Laboratory, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok, 10330, Thailand; National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), 111 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Phatum Thani, 12120, Thailand; Department of Chemistry, Faculty of Liberal Arts & Science, Kasetsart University, Nakhon Pathom, 73140, Thailand; Research Network NANOTEC-CU on Advanced Structural and Functional Nanomaterials, Chulalongkorn University, Bangkok, 10330, Thailand
Type
Article
Source Title
Nanomaterials
ISSN
20794991
Year
2019
Volume
9
Issue
6
Open Access
All Open Access, Gold, Green
Publisher
MDPI AG
DOI
10.3390/nano9060881
Format
Abstract
Smart materials with light-actuated shape memory effects are developed from renewable resources in this work. Bio-based benzoxazine resin is prepared from vanillin, furfurylamine, and paraformaldehyde by utilizing the Mannich-like condensation. Vanillin-furfurylamine-containing benzoxazine resin (V-fa) is subsequently copolymerized with epoxidized castor oil (ECO). When the copolymer is reinforced with multiwalled carbon nanotubes (MWCNTs), the resulting composite exhibits shape memory effects. Molecular characteristics of V-fa resin, ECO, and V-fa/ECO copolymers are obtained from Fourier transform infrared (FT-IR) spectroscopy. Curing behavior of V-fa/ECO copolymers is investigated by differential scanning calorimetry. Dynamic mechanical properties of MWCNT reinforced V-fa/ECO composites are determined by dynamic mechanical analysis. Morphological details and distribution of MWCNTs within the copolymer matrix are characterized by transmission electron microscopy. Shape memory performances of MWCNT reinforced V-fa/ECO composites are studied by shape memory tests performed with a universal testing machine. After a significant deformation to a temporary shape, the composites can be recovered to the original shape by near-infrared (NIR) laser actuation. The shape recovery process can be stimulated at a specific site of the composite simply by focusing NIR laser to that site. The shape recovery time of the composites under NIR actuation is four times faster than the shape recovery process under conventional thermal activation. Furthermore, the composites possess good shape fixity and good shape recovery under NIR actuation. © 2019 by the authors. Licensee MDPI, Basel, Switzerland.
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 2
Knowledge Taxonomy Level 3
Funding Sponsor
Chulalongkorn University; National Science and Technology Development Agency; National Nanotechnology Center; Ministry of Science and Technology of Thailand
License
CC BY
Rights
Author
Publication Source
Scopus