Electroconductive starch/multi-walled carbon nanotube films plasticized by 1-ethyl-3-methylimidazolium acetate

Domene-López, Daniel; Delgado-Marín, José J.; García‐Quesada, J.C.; Martı́n-Gullón, Ignacio; Montalbán, Mercedes G.

doi:10.1016/j.carbpol.2019.115545

Cited by 25 publications

(21 citation statements)

References 56 publications

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“…Figure 5 and Table 3 presents the mechanical test results of the samples. With reference to the tensile result of synthetic polymers, polystyrene (30-55 MPa) and polypropylene (25)(26)(27)(28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40), it was found that the highest tensile value (35 MPa) is achievable with the composition of GC 24-28% and FC 10-15%. This was attributed to the effect of glycerol opening the polymeric 3D structure, which allowed fibre incorporation.…”

Section: Thermoplastic Corn Starchmentioning

confidence: 99%

“…Several research works have been recently conducted to explore certain ionic liquids (ILs) as new starch plasticisers. Ionic liquids include 1-ethyl-3-methylimidazolium acetate ([emim + ][Ac − ]) [ 35 , 37 ] and 1-butyl-3-methyllimidazolium chloride ([bmim + ][Cl − ]) [ 33 ]. Besides, a recent study employed fried sunflower oil as a plasticiser in thermoplastic starch composites.…”

Section: Thermoplastic Starchmentioning

confidence: 99%

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Physical Properties of Thermoplastic Starch Derived from Natural Resources and Its Blends: A Review

et al. 2021

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Thermoplastic starch composites have attracted significant attention due to the rise of environmental pollutions induced by the use of synthetic petroleum-based polymer materials. The degradation of traditional plastics requires an unusually long time, which may lead to high cost and secondary pollution. To solve these difficulties, more petroleum-based plastics should be substituted with sustainable bio-based plastics. Renewable and natural materials that are abundant in nature are potential candidates for a wide range of polymers, which can be used to replace their synthetic counterparts. This paper focuses on some aspects of biopolymers and their classes, providing a description of starch as a main component of biopolymers, composites, and potential applications of thermoplastics starch-based in packaging application. Currently, biopolymer composites blended with other components have exhibited several enhanced qualities. The same behavior is also observed when natural fibre is incorporated with biopolymers. However, it should be noted that the degree of compatibility between starch and other biopolymers extensively varies depending on the specific biopolymer. Although their efficacy is yet to reach the level of their fossil fuel counterparts, biopolymers have made a distinguishing mark, which will continue to inspire the creation of novel substances for many years to come.

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Section: Thermoplastic Corn Starchmentioning

confidence: 99%

Section: Thermoplastic Starchmentioning

confidence: 99%

Physical Properties of Thermoplastic Starch Derived from Natural Resources and Its Blends: A Review

et al. 2021

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“…Qian et al used carbon black oxide particles as fillers in the TPS matrix to obtain well-dispersed particles in the mixture by the casting method and to increase the tensile strength of the composites [24]. Recently, electroconductive starchbased films plasticized by an ionic liquid have been investigated as a new preparation approach [25,26]. Furthermore, some other studies have demonstrated that fillers such as multiwalled carbon nanotubes, graphene, and graphene oxide can increase the tensile strength and improve the barrier and electrical properties of CPCs based on TPS [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Thermoplastic Starch–Based Composite Reinforced by Conductive Filler Networks: Physical Properties and Electrical Conductivity Changes during Cyclic Deformation

et al. 2021

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Conductive polymer composites (CPC) from renewable resources exhibit many interesting characteristics due to their biodegradability and conductivity changes under mechanical, thermal, chemical, or electrical stress. This study is focused on investigating the physical properties of electroconductive thermoplastic starch (TPS)–based composites and changes in electroconductive paths during cyclic deformation. TPS–based composites filled with various carbon black (CB) contents were prepared through melt processing. The electrical conductivity and physicochemical properties of TPS–CB composites, including mechanical properties and rheological behavior, were evaluated. With increasing CB content, the tensile strength and Young’s modulus were found to increase substantially. We found a percolation threshold for the CB loading of approximately 5.5 wt% based on the rheology and electrical conductivity. To observe the changing structure of the conductive CB paths during cyclic deformation, both the electrical conductivity and mechanical properties were recorded in parallel using online measurements. Moreover, the instant electrical conductivity measured online during mechanical deformation of the materials was taken as the parameter indirectly describing the structure of the conductive CB network. The electrical conductivity was found to increase during five runs of repeated cyclic mechanical deformations to constant deformation below strain at break, indicating good recovery of conductive paths and their new formation.

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“…Although this hydrogel displayed electrical conductivity as high as 36 S/cm, it was clay- or plasticine-like and cannot be used as an elastic sensor. Domene-López et al prepared starch/multiwalled carbon nanotube (MWCNT) films with [C 2 mim][OAc] as a plasticizer. The films had high electrical conductivity, 56 S/m, based on the combination of MWCNTs and [C 2 mim][OAc].…”

Section: Introductionmentioning

confidence: 99%

Facile Preparation of Eco-Friendly, Flexible Starch-Based Materials with Ionic Conductivity and Strain-Responsiveness

Liu

et al. 2020

ACS Sustainable Chem. Eng.

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This work demonstrates a facile and "green" method to prepare eco-friendly, flexible, transparent, and ionically conductive starch-based materials, which have great potential for personal health-monitoring applications such as disposable electrodes. This method relies on the use of the CaCl 2 solution and enables both the efficient disorganization and amorphization of high-amylose starch granules with low energy consumption and the reinforcement of the starch chain network by starch−metal cation complexation. Specifically, the method involves a simple mixing of a high-amylose starch with the CaCl 2 solution followed by heating the mixture at 80 °C for 5 min. The whole process is completely environmentally benign, without any waste liquid or bioproducts generated. These resulting materials displayed tunable mechanical strength (500−1300 kPa), elongation at break (15−32%), Young's modulus (4−9 MPa), toughness (0.05−0.26 MJ/m 3 ), and suitable electrical resistivity (3.7−9.2 Ω•m). Moreover, the developed materials were responsive to external stimuli such as strain and liquids, satisfying the requirements for wearable sensor applications. Besides, composed of only starch, CaCl 2 , and water, the materials are much cheaper and eco-friendly (can be consumed by fish) compared with other polymer-based conductive hydrogels.

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Electroconductive starch/multi-walled carbon nanotube films plasticized by 1-ethyl-3-methylimidazolium acetate

Cited by 25 publications

References 56 publications

Physical Properties of Thermoplastic Starch Derived from Natural Resources and Its Blends: A Review

Physical Properties of Thermoplastic Starch Derived from Natural Resources and Its Blends: A Review

Thermoplastic Starch–Based Composite Reinforced by Conductive Filler Networks: Physical Properties and Electrical Conductivity Changes during Cyclic Deformation

Facile Preparation of Eco-Friendly, Flexible Starch-Based Materials with Ionic Conductivity and Strain-Responsiveness

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