Preparation and characterization of hydrogel nanocomposite based on nanocellulose and acrylic acid in the presence of urea

Shahzamani, Mahnaz; Taheri, Somayeh; Roghanizad, Ahmadreza; Naseri, Navid; Dinari, Mohammad

doi:10.1016/j.ijbiomac.2020.01.038

Cited by 50 publications

(25 citation statements)

References 27 publications

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“…Among them, the XRD pattern of PAA shows a strong wide peak, indicating that PAA is an amorphous structure with low crystallinity. [ 52 ] The surface of the composite hydrogel is covered with PEDOT, so the XRD peak area decreases. Figure 2B is an SEM image of the center of the composite hydrogel cross‐section.…”

Section: Resultsmentioning

confidence: 99%

A High Strength Hydrogel with a Core–Shell Structure Simultaneously Serving as Strain Sensor and Solar Water Evaporator

Peng

Tang

Wang

et al. 2021

Macro Materials & Eng

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A super‐strong poly (acrylic acid)‐ poly(3,4‐ethylene dioxythiophene) (PAA‐PEDOT) hydrogel with a unique core‐shell structure is successfully constructed and studied. The shell composed of the conductive polymer PEDOT makes the composite hydrogel possess mechanical strength, electrical conductivity, and photothermal conversion properties, while the PAA hydrogel core ensures the flexibility, recovery, and water absorption of the composite hydrogel. The prepared PAA‐PEDOT hydrogel displays outstanding tensile strength (up to 780 KPa) and satisfactory conductivity (6.6 S m−1). Notably, the flexible strain sensor made of PAA‐PEDOT composite hydrogel presents both high sensitivity (gauge factor up to 8.87) and short response time (<200 ms), demonstrating that the composite hydrogel can accurately and timely detect the movement of human joints. In addition, PAA‐PEDOT composite hydrogel also has excellent photothermal conversion properties and can be used as a highly efficient solar water evaporator, which has a water evaporation efficiency of up to 3.05 kg m−2 h and an excellent photothermal conversion efficiency of 95% under 1‐sun irradiation (1kW m−2). These features make the composite hydrogel has great potential in many fields such as motion sensing, seawater desalination, and wastewater treatment.

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Section: Resultsmentioning

confidence: 99%

A High Strength Hydrogel with a Core–Shell Structure Simultaneously Serving as Strain Sensor and Solar Water Evaporator

Peng

Tang

Wang

et al. 2021

Macro Materials & Eng

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show abstract

“…Graft polymerization of vinyl monomers on cellulose structures, for example, can provide active sites for the attachment of desired functional groups (Kumari et al, 2014;Tong et al, 2020). Chemical and physical cross-linking have been employed for improvement of certain characteristics such as moisture sensitivity of nanocellulose-based materials (Sharma and Deng, 2016) and for the fabrication of fascinating materials such as flexible aerogels (Wu et al, 2019;Shahzamani et al, 2020). Functional coating on the nanofiber surfaces has also been investigated by evaluating the adhesion between nanofiber and a variety of nanoparticles .…”

Section: Surface Modification Of Nanocellulosementioning

confidence: 99%

Current State of Applications of Nanocellulose in Flexible Energy and Electronic Devices

et al. 2020

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Novel and unique applications of nanocellulose are largely driven by the functional attributes governed by its structural and physicochemical features including excellent mechanical properties and biocompatibility. In recent years, thousands of groundbreaking works have helped in the development of targeted functional nanocellulose for conductive, optical, luminescent materials, and other applications. The growing demand for sustainable and renewable materials has led to the rapid development of greener methods for the design and fabrication of high-performance green nanomaterials with multiple features, and consequently new challenges and opportunities. The present review article discusses historical developments, various fabrication and functionalization methods, the current stage, and the prospects of flexible energy and hybrid electronics based on nanocellulose.

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“…It can be graft-copolymerized with vinyl carboxylic acid monomer to make composite materials to enhance its swelling, water resistance and adsorption properties, expanding the application of starch in the functional material field. Starch based copolymer adsorbents have been studied for many years, but most of the composite materials with high adsorption performance are aiming at high concentration of metal ion solution [6,7]. In this study, a starch-based adsorbent with superior adsorption capacity for low concentration mercury (II) ions was synthesized.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Poly(acrylic acid-acrylamide/starch) Composite and Its Adsorption Properties for Mercury (II)

et al. 2021

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The poly (acrylic acid-acrylamide/starch) composite was synthesized by solution polymerization, aiming to adsorb mercury (II) in water. The resulted copolymer was characterized by particle size exclusion chromatography (SEC), Fourier transform infrared spectroscopy (FTIR), thermogravimetry (TG), scanning electron microscopy (SEM) and dynamic light scattering particle size analyzer (DLS). It turned out that starch was successfully incorporated with the macromolecular polymer matrix and played a key role for improving the performance of the composites. These characterization results showed that the graft copolymer exhibited narrow molecular weight distribution, rough but uniform morphology, good thermal stability and narrow particle size distribution. The graft copolymer was used to remove Hg(II) ions from aqueous solution. The effects of contact time, pH value, initial mercury (II) concentration and temperature on the adsorption capacity of Hg(II) ions were researched. It was found that after 120 min of interaction, poly (acrylic acid-acrylamide/starch) composite achieved the maximum adsorption capacity of 19.23 mg·g−1 to Hg(II) ions with initial concentration of 15 mg·L−1, pH of 5.5 at 45 °C. Compared with other studies with the same purpose, the composites synthesized in this study present high adsorption properties for Hg(II) ion in dilute solution. The adsorption kinetics of Hg(II) on the poly (acrylic acid-acrylamide/starch) composite fits well with the pseudo second order model.

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Preparation and characterization of hydrogel nanocomposite based on nanocellulose and acrylic acid in the presence of urea

Cited by 50 publications

References 27 publications

A High Strength Hydrogel with a Core–Shell Structure Simultaneously Serving as Strain Sensor and Solar Water Evaporator

A High Strength Hydrogel with a Core–Shell Structure Simultaneously Serving as Strain Sensor and Solar Water Evaporator

Current State of Applications of Nanocellulose in Flexible Energy and Electronic Devices

Preparation of Poly(acrylic acid-acrylamide/starch) Composite and Its Adsorption Properties for Mercury (II)

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