Publication: Shape memory polymers from bio-based benzoxazine/epoxidized natural oil copolymers
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Issued Date
2020
Resource Type
File Type
application/pdf
ISSN
9641726
Other identifier(s)
2-s2.0-85081680695
Rights Holder(s)
มหาวิทยาลัยศรีนครินทรวิโรฒ
Bibliographic Citation
Smart Materials and Structures. Vol 29, No.1 (2020)
Suggested Citation
Hombunma P., Parnklang T., Mora P., Jubsilp C., Rimdusit S. Shape memory polymers from bio-based benzoxazine/epoxidized natural oil copolymers. Smart Materials and Structures. Vol 29, No.1 (2020). doi:10.1088/1361-665X/ab49e5 Retrieved from: https://hdl.handle.net/20.500.14740/4953
Author(s)
Abstract
In this research, shape memory polymers (SMPs) fabricated from bio-based benzoxazine resins, i.e. vanillin-furfurylamine-containing benzoxazine (V-fa) and eugenol-furfurylamine-containing benzoxazine (E-fa) resins, and bio-based epoxy resin, i.e. epoxidized castor oil (ECO), are investigated. Effects of ECO mass concentrations on curing characteristics, thermal stability, dynamic mechanical properties, and shape memory properties are determined by differential scanning calorimetry, thermogravimetric analysis, dynamic mechanical analysis, and shape memory tests, respectively. Storage moduli at the glassy state and glass transition temperatures (T g) of V-fa/ECO and E-fa/ECO copolymers decrease with increasing ECO mass concentrations. The bending tests performed with a universal testing machine are employed to evaluate the shape memory properties of the developed bio-based copolymers. V-fa/ECO SMPs show excellent shape fixity of 86%-94% at room temperature and high shape recovery at T g + 20 °C of 81%-96%. V-fa/ECO SMPs can undergo fold-deploy shape memory cycles without altering the shape memory performances for at least 5 cycles. Good balance between shape memory performances and thermo-mechanical properties in the V-fa/ECO copolymer system is obtained when ECO mass concentration is 40% (w/w). © 2019 IOP Publishing Ltd.
Subject(s)
Bending tests
Biopolymers
Dielectric materials
Differential scanning calorimetry
Dynamics
Epoxy resins
Glass
Glass transition
Intelligent materials
Shape optimization
Smart Polymers
Thermogravimetric analysis
Curing characteristics
Dynamic mechanical property
Polybenzoxazine
Renewable materials
Shape-memory properties
Thermomechanical properties
Universal testing machines
Vanillin
Shape-memory polymer
Biopolymers
Dielectric materials
Differential scanning calorimetry
Dynamics
Epoxy resins
Glass
Glass transition
Intelligent materials
Shape optimization
Smart Polymers
Thermogravimetric analysis
Curing characteristics
Dynamic mechanical property
Polybenzoxazine
Renewable materials
Shape-memory properties
Thermomechanical properties
Universal testing machines
Vanillin
Shape-memory polymer