Engineering highly stretchable lignin-based electrospun nanofibers for potential biomedical applications

Kai, Dan; Jiang, Shan; Low, Zhi Wei Kenny; Loh, Xian Jun

doi:10.1039/c5tb00765h

Cited by 162 publications

(76 citation statements)

References 53 publications

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“…This emerging technology was invented to convert electronics that have traditionally been constrained to rigid and planar formats into the next generation which are bendable, compressible, stretchable, or formable into desired three-dimensional (3D) shapes and is leading a global revolution in electronic applications such as sensors and actuators, [19][20][21][22][23][24][25] energy harvesting and storage, [26][27][28] lighting, [29][30][31] and medical and healthcare. [32][33][34][35][36] Because they can be integrated with soft materials and curvilinear surfaces, stretchable electronics will provide the foundation for applications that exceed the scope of conventional semiconductors and PCB technologies. To accommodate mechanical deformation during stretching while maintaining the electrical performance and reliability of the system, either the materials or the structures need to be stretchable.…”

Section: Introductionmentioning

confidence: 99%

Stretchable sensors for environmental monitoring

Yang

Deng

2019

Applied Physics Reviews

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The development of flexible and stretchable sensors has been receiving increasing attention in recent years. In particular, stretchable, skin-like, wearable sensors are desirable for a variety of potential applications such as personalized health monitoring, human-machine interfaces, and environmental sensing. In this paper, we review recent advancements in the development of mechanically flexible and stretchable sensors and systems that can be used to quantitatively assess environmental parameters including light, temperature, humidity, gas, and pH. We discuss innovations in the device structure, material selection, and fabrication methods which explain the stretchability characteristics of these environmental sensors and provide a detailed and comparative study of their sensing mechanisms, sensor characteristics, mechanical performance, and limitations. Finally, we provide a summary of current challenges and an outlook on opportunities for possible future research directions for this emerging field.

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Section: Introductionmentioning

confidence: 99%

Stretchable sensors for environmental monitoring

Yang

Deng

2019

Applied Physics Reviews

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“…Therefore, partial replacement of PP by low‐cost lignin is economically and ecologically attractive . Furthermore, lignin possesses numerous attractive properties, such as high thermal stability, biodegradability, and stiffness, and may create dense networks structures . However, even though lignin itself has a high modulus, it is highly brittle which restricts its application in several areas .…”

Section: Introductionmentioning

confidence: 99%

“…and stiffness, 18,19 and may create dense networks structures. 20 However, even though lignin itself has a high modulus, it is highly brittle which restricts its application in several areas.…”

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confidence: 99%

Development of high bio‐content polypropylene composites with different industrial lignins

Dias

Sain

Cesarino

et al. 2018

Polymers for Advanced Techs

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Sustainability, eco‐efficiency, pollution prevention, industrial ecology, and green chemistry are considering platform‐based approaches to the development of the next generation of products and processes. Recently, renewable alternatives to traditional petroleum‐derived plastics have motivated recent interest in bio‐based composite materials which can contribute to the reduction of the environmental footprint. Lignin is a complex and amorphous biopolymer with a high density of functional groups and high modulus, which makes it potentially promising for material applications. In this sense, lignin can potentially be employed to improve the performance of materials and an economical alternative to convert lignin into high value‐added materials. Two different types of Kraft lignin were incorporated into polypropylene to fabricate composites with high bio‐content. In this study, polypropylene, Kraft lignin, and coupling agent were subjected to reactive extrusion. The composites prepared by melt processing were compared in terms of morphological, mechanical, and thermal characterizations. The results revealed that the incorporation of lignin into polypropylene matrix resulted in composites with properties suitable for various industrial sectors, especially those in which mechanical and thermal properties are crucial, such as the replacement of engineering plastics and polypropylene mineral filled. As a result, this work provides an effective way of using lignin as a low‐cost bio‐renewable resource in the plastics industry.

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“…Polymers, which are biocompatible and in the form of nanofibers, are widely used as a scaffolding system for tissue engineering applications owing to their structural and functional properties [3][4][5][6]. The polymeric nanofiber scaffolds offer large surface area-to-volume ratio and high porosity, which favors in modulating cellular fate and function during tissue engineering [1,[7][8][9][10][11]. However, most of the conventional polymer nanofiber scaffolds are limited by inadequate mechanical properties such as flexibility, elongation, etc.…”

Section: Introductionmentioning

confidence: 99%

Design and fabrication of auxetic PCL nanofiber membranes for biomedical applications

Bhullar

Rana

Lekesiz

et al. 2017

Materials Science and Engineering: C

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The main objective of this study was to fabricate poly (ε-caprolactone) (PCL)-based auxetic nanofiber membranes and characterize them for their mechanical and physicochemical properties. As a first step, the PCL nanofibers were fabricated by electrospinning with two different thicknesses of 40μm (called PCL thin membrane) and 180μm (called PCL thick membrane). In the second step, they were tailored into auxetic patterns using femtosecond laser cut technique. The physicochemical and mechanical properties of the auxetic nanofiber membranes were studied and compared with the conventional electrospun PCL nanofibers (non-auxetic nanofiber membranes) as a control. The results showed that there were no significant changes observed among them in terms of their chemical functionality and thermal property. However, there was a notable difference observed in the mechanical properties. For instance, the thin auxetic nanofiber membrane showed the magnitude of elongation almost ten times higher than the control, which clearly demonstrates the high flexibility of auxetic nanofiber membranes. This is because that the auxetic nanofiber membranes have lesser rigidity than the control nanofibers under the same load which could be due to the rotational motion of the auxetic structures. The major finding of this study is that the auxetic PCL nanofiber membranes are highly flexible (10-fold higher elongation capacity than the conventional PCL nanofibers) and have tunable mechanical properties. Therefore, the auxetic PCL nanofiber membranes may serve as a potent material in various biomedical applications, in particular, tissue engineering where scaffolds with mechanical cues play a major role.

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Engineering highly stretchable lignin-based electrospun nanofibers for potential biomedical applications

Abstract: The incorporation of lignin–PMMA copolymers into PCL nanofibers significantly improved the mechanical properties and biocompatibility of the nanofibrous composites.

Cited by 162 publications

References 53 publications

Stretchable sensors for environmental monitoring

Stretchable sensors for environmental monitoring

Development of high bio‐content polypropylene composites with different industrial lignins

Design and fabrication of auxetic PCL nanofiber membranes for biomedical applications

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