Discovery of Cellulose as a Smart Material

Kim, Jaehwan; Yun, Sungryul; Ounaies, Zoubeida

doi:10.1021/ma060261e

Cited by 648 publications

(450 citation statements)

References 13 publications

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“…[32][33][34] These structures are fabricated by printing electrodes (usually made from gold) on both sides of paper or of cellulose films. They are lightweight, and flexible, but have the drawback that they require metallic electrodes.…”

Section: Introductionmentioning

confidence: 99%

Electrically Activated Paper Actuators

Hamedi

Campbell

Rothemund

et al. 2016

Adv Funct Materials

147

153

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This paper describes the design and fabrication of electrically controlled paper actuators that operate based on the dimensional changes of that occur in paper when the moisture absorbed on the surface of the cellulose fibers changes. These actuators are called "Hygroexpansive Electrothermal Paper Actuators" (HEPAs). The actuators are made from paper, conducting polymer, and adhesive tape. They are lightweight, inexpensive, and can be fabricated using simple printing techniques. The central element of the HEPAs is a porous conducting path (used to provide electrothermal heating) that changes the moisture content of the paper and causes actuation. This conducting path is made by embedding a conducting polymer (PEDOT:PSS) within the paper, and thus making a paper / polymer composite that retains the porosity and hydrophilicity of paper. Different types of HEPAs (straight, pre-curved, and creased) achieved different types of motions (e.g., bending motion, accordion type motion). A theoretical model for their behavior is proposed. These actuators have been used for the manipulation of liquids, and for the fabrication of an optical shutter.

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Section: Introductionmentioning

confidence: 99%

Electrically Activated Paper Actuators

Hamedi

Campbell

Rothemund

et al. 2016

Adv Funct Materials

147

153

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“…Moreover, owing to the presence of reactive functional groups on the surface of cellulose, it can be chemically modified and various functionalities can be introduced for tailoring the final properties for custom-made applications. Being chiral and biocompatible, various new applications are arising in the field of immobilization of proteins and antibodies, purification and separation of enantiomeric molecules and synthesis of cellulose composites with various synthetic and biopolymers (Kim and Yun, 2006;Pandey et al, 2010). With increasing understanding of physicochemical properties, structure and functions, cellulose and its derivatives are ever more incorporated into advanced technology and materials.…”

Section: Introductionmentioning

confidence: 99%

Cellulose Nanocrystals as Advanced "Green" Materials for Biological and Biomedical Engineering

Sinha¹,

Martin²,

Lim³

et al. 2015

Journal of Biosystems Engineering

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Background: Cellulose is a ubiquitous, renewable and environmentally friendly biopolymer, which has high promise to fulfil the rising demand for sustainable and biocompatible materials. Particularly, the recent progress in the synthesis of highly crystalline cellulose-based nanoscale biomaterials, namely cellulose nanocrystals (CNCs), draws significant attention from many research communities, ranging from bioresource engineering, to materials science and engineering, to biological and biomedical engineering to bionanotechnology. The feasibility of harnessing CNCs' unique biophysicochemical properties has inspired their basic and applied research, offering much promise for new biomaterials with diverse advanced functionalities. Purpose: This review focuses on vital issues and topics on the recent advances in CNC-based biomaterials with potential, in particular, for bionanotechnology and biological and biomedical engineering. The challenges and limitations of CNC technology are discussed as well as potential strategies to overcome them, providing an essential source of information in the exploration of possible and futuristic applications of the CNC-based functional "green" nanomaterials. Conclusion: CNCs offer exciting possibilities for advanced "green" nanomaterials, driving innovative research and development in a wide range of fields, including biological and biomedical engineering.

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“…As a result, in the last two decades re-search was focused on dt the development of other reinforcing agents de-rived from inorganic [9,10] and natural organic [11,12] materials to replace carbon black in rubber compounds. It is well known that one of these promising materials is cellulose (cell) [13], which is a renewable raw material, is more environmentally friendly than CB and comes from a sustainable resource. It is for this reason that we have studied a series of NRcell nanocomposite samples in the present work, which is a continuation of previous studies [14][15][16] concerning the morphological, thermal, mechanical and electrical behaviour of these samples.…”

Section: Introductionmentioning

confidence: 99%

Electrical conductivity of natural rubber–cellulose II nanocomposites

Ortiz-Serna

Carsí

Redondo-Foj

et al. 2014

Journal of Non-Crystalline Solids

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Nanocomposite materials obtained from natural rubber (NR) reinforced with different amounts of cellulose II (cell) nanoparticles (in the range of 0 to 30 phr) are studied by dielectric spectroscopy (DS) in a broad temperature range (− 150 to 150 °C). For comparative purposes, the pure materials, NR and cell, are also investigated. An analysis of the cell content effect on the conductive properties of the nanocomposites was carried out. The dielectric spectra exhibit conductivity phenomena at low frequencies and high temperatures: Maxwell-Wagner-Sillars (MWS) and electrode polarization (EP) conductive processes were observed in the nanocomposite samples.

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Discovery of Cellulose as a Smart Material

Cited by 648 publications

References 13 publications

Electrically Activated Paper Actuators

Electrically Activated Paper Actuators

Cellulose Nanocrystals as Advanced "Green" Materials for Biological and Biomedical Engineering

Electrical conductivity of natural rubber–cellulose II nanocomposites

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