Dual-responsive shape memory and self-healing ability of a novel copolymer from epoxy/cashew nut shell liquid and polycaprolactone

Lorwanishpaisarn, Narubeth; Kasemsiri, Pornnapa; Jetsrisuparb, Kaewta; Knijnenburg, Jesper T.N.; Hızıroǧlu, Salim; Pongsa, Uraiwan; Chindaprasirt, Prinya; Uyama, Hiroshi

doi:10.1016/j.polymertesting.2019.106159

Cited by 21 publications

(19 citation statements)

References 67 publications

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“…Chemical actuation of shape memory polymers: There has been a large body of work on chemical actuation of the one-way effect in macromolecular systems [5,6,8,11,17,18,[20][21][22][23][24][65][66][67][68][69][70]. Most of the work published so far has a strong chemical, biochemical, and processing/ application-oriented focus.…”

Section: Discussionmentioning

confidence: 99%

A Mechanical Analysis of Chemically Stimulated Linear Shape Memory Polymer Actuation

et al. 2021

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In the present work, we study the role of programming strain (50% and 100%), end loads (0, 0.5, 1.0, and 1.5 MPa), and chemical environments (acetone, ethanol, and water) on the exploitable stroke of linear shape memory polymer (SMP) actuators made from ESTANE ETE 75DT3 (SMP-E). Dynamic mechanical thermal analysis (DMTA) shows how the uptake of solvents results in a decrease in the glass temperature of the molecular switch component of SMP-E. A novel in situ technique allows studying chemically triggered shape recovery as a function of time. It is found that the velocity of actuation decreases in the order acetone > ethanol > water, while the exploitable strokes show the inverse tendency and increases in the order water > ethanol > acetone. The results are interpreted on the basis of the underlying chemical (how solvents affect thermophysical properties) and micromechanical processes (the phenomenological spring dashpot model of Lethersich type rationalizes the behavior). The study provides initial data which can be used for micromechanical modeling of chemically triggered actuation of SMPs. The results are discussed in the light of underlying chemical and mechanical elementary processes, and areas in need of further work are highlighted.

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Section: Discussionmentioning

confidence: 99%

A Mechanical Analysis of Chemically Stimulated Linear Shape Memory Polymer Actuation

et al. 2021

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“…Bio-based curing agents for epoxy have become a topic of interest because of their biocompatibility and eco-friendliness (12,13). Cashew nut shell liquid (CNSL) is an inexpensive bio-based curing agent for epoxy that is obtained as the by-product of cashew nut production (14)(15)(16)(17). Three main components of CNSL are cardanol, cardol and anacardic acid.…”

Section: Introductionmentioning

confidence: 99%

Self-healing Ability of Epoxy Vitrimer Nanocomposites Containing Bio-Based Curing Agents and Carbon Nanotubes for Corrosion Protection

et al. 2021

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Epoxy is extensively used for anti-corrosion coatings on metallic materials. Conventional epoxy coatings have a permanent crosslink network that is unable to repair itself when cracks and damages occur on the coating layer. This study aims to develop self-healing epoxy vitrimer/carbon nanotube (CNTs) nanocomposite for coating. Two bio-based curing agents viz., cashew nut shell liquid (CNSL) and citric acid (CA) were employed to create covalent adaptable networks. The 0-0.5 wt% CNTs were also incorporated into epoxy/CNSL/CA matrix (V-CNT0-0.5). Based on the results of our study, thermomechanical properties of V-CNT nanocomposites increased with increasing CNTs content. The bond exchange reaction of esteri cation was thermally activated by near infrared (NIR) light. The V-CNT0.5 showed the highest self-healing e ciency in Shore D hardness of 97.37%. The corrosion resistance of coated steel with V-CNT0 and V-CNT0.5 were observed after immersing the samples in 3.5 wt% NaCl for 7 days. The corrosion rate of coated steel with V-CNT0.5 decreased from 9.53 x 10 2 MPY to 3.12 x 10 -5 MPY whereas an increase in protection e ciency of 99.99% was observed. By taking advantages of the superior self-healing and anti-corrosion properties, V-CNT0.5 could prove to be a desirable organic anti-corrosion coating material.

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“…% increased the flexural strength and fracture toughness of cardanol-phenol. Further, Lorwanishpaisarn et al developed epoxy-CNSL /polycaprolactone copolymer and found developed material is a promising alternative for bio-related smart material, dual-activated sensors and coatings with self-healing ability (Lorwanishpaisarn et al, 2019). Eksik et al developed nanocomposite with cashew nut shell-derived epoxy reinforced with graphene platelets and found promising properties suitable for high-performance applications (Eksik et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Tribo-mechanical properties of epoxy-cashew nut shell liquid-crumb rubber- friction dust-banana fiber composites

et al. 2021

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Epoxy-cashew nut shell liquid (E-CNSL) composites are prepared by open resin moulding method with varying CNSL content (16 to 30 vol. %.). The tensile properties, hardness and impact strength of E-CNSL composites were investigated as per ASTM standards. It is found that the addition of the CNSL in epoxy increases the elongation at break and tensile strength. The 16 vol. % CNSL addition showed maximum tensile strength, and further increased CNSL deteriorates the tensile properties of the resultant composites. Further, hybrid composites are prepared by reinforcing crumb rubber (CR), short banana fibre (BF) and friction dust (FD) in cashew nut shell liquid (CNSL) mixed epoxy. The samples were tested as per ASTM standards to investigate the basic mechanical properties. It is found that the hybrid composite made of 2.5 vol. % CR, 2.5 vol. % FD and 7.5 vol. % BF in epoxy with 16 vol. % of CNSL showed better properties. Further, the specific wear rate, coefficient of friction and rate of water intake is investigated for the hybrid composite and reported.

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Dual-responsive shape memory and self-healing ability of a novel copolymer from epoxy/cashew nut shell liquid and polycaprolactone

Cited by 21 publications

References 67 publications

A Mechanical Analysis of Chemically Stimulated Linear Shape Memory Polymer Actuation

A Mechanical Analysis of Chemically Stimulated Linear Shape Memory Polymer Actuation

Self-healing Ability of Epoxy Vitrimer Nanocomposites Containing Bio-Based Curing Agents and Carbon Nanotubes for Corrosion Protection

Tribo-mechanical properties of epoxy-cashew nut shell liquid-crumb rubber- friction dust-banana fiber composites

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