Dialysis-Free and in Situ Doping Synthesis of Polypyrrole@Cellulose Nanowhiskers Nanohybrid for Preparation of Conductive Nanocomposites with Enhanced Properties

Zhang, Xinxing; Wu, Xiaodong; Lu, Canhui; Zhou, Zehang

doi:10.1021/sc500853m

Cited by 56 publications

(32 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cellulose nanocrystals can also be used to stabilize the surface of polymer latexes 248,249 , for example through a Pickering emulsion 250 . Most applications envisaged for nanocarbonnanocellulose materials require mechanically robust materials with electrical conductivity, with biocompatibility being often a desirable quality.…”

Section: Nanocellulose-nanocarbon Compositesmentioning

confidence: 99%

Nanocellulose, a Versatile Green Platform: From Biosources to Materials and Their Applications

Thomas¹,

Raj²,

B³

et al. 2018

Chem. Rev.

1,199

752

View full text Add to dashboard Cite

With increasing environmental and ecological concerns due to the use of petroleum based chemicals and products, the synthesis of fine chemicals and functional materials from natural resources is of great public value. Nanocellulose may prove to be one of the most promising green materials of modern times due to its intrinsic properties, renewability and abundance. In this review, we present nanocellulose-based materials from sourcing, synthesis, and surface modification of nanocellulose, to materials formation and applications. Nanocellulose can be sourced from biomass, plants or bacteria, relying of fairly simple, scalable and efficient isolation techniques. Mechanical, chemical, enzymatic treatments, or a combination of these, can be used to extract nanocellulose from natural sources. The properties of nanocellulose are dependent on the source, the isolation technique and potential subsequent surface transformations. Nanocellulose surface modification techniques are typically used to introduce either charged or hydrophobic moieties, and include: amidation, esterification, etherification, silylation, polymerization, urethanization, sulfonationand phosphorylation. Nanocellulose has excellent strength, Young's modulus, biocompatibility, and tunable self-assembly, thixotropic and photonic properties, which are essential for the applications of this material. Nanocellulose participates in the fabrication of a large range of nanomaterials and nanocomposites, including those based on polymers, metals, metal oxides and carbon. In particular, nanocellulose complements organic-based materials, where it imparts its mechanical properties to the composite. Nanocellulose is a promising material whenever material strength, flexibility and/or specific nanostructuring are required. Applications include functional paper, optoelectronics and antibacterial coatings, packaging, mechanically reinforced polymer composites, tissue scaffolds, drug delivery, biosensors, energy storage, catalysis, environmental remediation and 3 electrochemical controlled separation. Phosphorylated nanocellulose is a particularly interesting material, spanning a surprising set of applications in various dimensions including bone scaffolds, adsorbents, flame retardants and as a support for the heterogenization of homogeneous catalysts.

show abstract

Section: Nanocellulose-nanocarbon Compositesmentioning

confidence: 99%

Nanocellulose, a Versatile Green Platform: From Biosources to Materials and Their Applications

Thomas¹,

Raj²,

B³

et al. 2018

Chem. Rev.

1,199

752

View full text Add to dashboard Cite

show abstract

“…CNC was prepared by controlled acid hydrolysis of WCFs according to our previous studies (Zhang et al, 2015;Wang et al, 2015). WCFs (22.86 g) were mixed with preheated sulfuric acid solution (64 wt%, 400 mL) at 45 o C for 45 min.…”

Section: Preparation Of Cncmentioning

confidence: 99%

Water-soluble cellulose acetate from waste cotton fabrics and the aqueous processing of all-cellulose composites

Cao

Sun

et al. 2016

Carbohydrate Polymers

Self Cite

View full text Add to dashboard Cite

The objective of this study is to explore the possibility of using waste cotton fabrics (WCFs) as low cost feedstock for the production of value-added products. Our previous study (Tian et al., 2014) demonstrated that acidic ionic liquids (ILs) can be highly efficient catalysts for controllable synthesis of cellulose acetate (CA) due to their dual function of swelling and catalyzing. In this study, an optimized "quasi-homogeneous" process which required a small amount of acidic ILs as catalyst was developed to synthesize water-soluble CA from WCFs. The process was optimized by varying the amounts of ILs and the reaction time. The highest conversion of water-soluble CA from WCFs reached 90.8%. The structure of the obtained water-soluble CA was characterized and compared with the original WCFs. Moreover, we demonstrate for the first time that fully bio-based and transparent all-cellulose composites can be fabricated by simple aqueous blending of the obtained water-soluble CA and two kinds of nanocelluloses (cellulose nanocrystals and cellulose nanofibrils), which is attractive for the applications in disposable packaging materials, sheet coating and binders, etc.

show abstract

“…The tunable piezoresistivity of the sensor in tiny motion monitoring is enabled by the morphological control of conductive fillers at the interfaces between conductive matrix and a flexible yarn electrode. According to our previous studies, cellulose nanocrystal (CNC) assisted the assembly of carbon nanotubes (CNTs) to construct a 3D nanostructured conductive network near the embedded conductive yarn electrode. Under strain, the changes of conductive filler distribution in the yarn electrode/elastomer matrix interface result in an increase in conductive pathways and then a large decrease in resistance.…”

Section: Introductionmentioning

confidence: 99%

Hierarchically Structured Self‐Healing Sensors with Tunable Positive/Negative Piezoresistivity

Guo

et al. 2018

Adv Funct Materials

Self Cite

192

113

View full text Add to dashboard Cite

It is a challenge to manufacture flexible sensors that possess easily distinguishable biomotion signals, strong response reliability, and excellent self-healing capability. Herein, a self-healing sensor with tunable positive/ negative piezoresistivity is designed by the construction of hierarchical structure connected through supramolecular metal-ligand coordination bonds. The developed sensors can be integrated with the human body to detect multiple tiny signals, such as pronunciation, coughing, and deep breathing. Interestingly, the nanostructured elastomer sensor with and without a flexible yarn electrode shows negative and positive current signals, respectively, making it easy to be identify. Furthermore, it exhibits very fast (2 min), autonomous, and repeatable self-healing ability with high-healing efficiency (88.6% after the third healing process). The healed samples still possess flexibility, high sensitivity, and accurate detection capability, even after bending over 10 000 cycles. The excellent biomimetic self-healing performance combined with the tunable piezoresistivity make it promising for next-generation wearable electronics.

show abstract

Dialysis-Free and in Situ Doping Synthesis of Polypyrrole@Cellulose Nanowhiskers Nanohybrid for Preparation of Conductive Nanocomposites with Enhanced Properties

Cited by 56 publications

References 29 publications

Nanocellulose, a Versatile Green Platform: From Biosources to Materials and Their Applications

Nanocellulose, a Versatile Green Platform: From Biosources to Materials and Their Applications

Water-soluble cellulose acetate from waste cotton fabrics and the aqueous processing of all-cellulose composites

Hierarchically Structured Self‐Healing Sensors with Tunable Positive/Negative Piezoresistivity

Contact Info

Product

Resources

About