Hydrochar-embedded carboxymethyl cellulose-g-poly(acrylic acid) hydrogel as stable soil water retention and nutrient release agent for plant growth

Zhang, Yufei; Tian, Xinyue; Zhang, Qiuyue; Xie, Huifang; Wang, Bingyu; Feng, Yanfang

doi:10.1016/j.jobab.2022.03.003

Cited by 56 publications

(17 citation statements)

References 44 publications

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“…In nature, there are many interesting phenomena, such as mimosa being stimulated to close their leaves and chameleon changing its colors according to the external environment, which have inspired people to explore and study intelligent materials. Hydrogel, as a kind of soft intelligent material, − can convert external energy (light, − heat, , magnetic, , ion, − electrical, , chemical energy, − pH, − etc.) into its own mechanical energy, thus causing its own deformation (shrinking, swelling, spiraling, bending, etc.)…”

Section: Introductionmentioning

confidence: 99%

Remotely Controlled Light/Electric/Magnetic Multiresponsive Hydrogel for Fast Actuations

Wei

Chen

et al. 2023

ACS Appl. Mater. Interfaces

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As a kind of soft smart material, hydrogel actuators have extensive development prospects, but it is still difficult for these actuators to integrate multiresponsiveness, multiple remote actuation, high strength, fast responsiveness, and programmable complex deformation. Herein, we have explored an anisotropic bilayer hydrogel actuator with an Fe 3 O 4 /co-poly-(isopropylacrylamide-4-benzoylphenyl acrylate) [Fe 3 O 4 /P-(NIPAM-ABP)] active layer and an isotropic conductive adhesive (ICAs) passive layer based on the layer-by-layer method. Benefiting from the fibrosis and porosity of the Fe 3 O 4 / P(NIPAM-ABP) hydrogel, the ICAs-Fe 3 O 4 /P(NIPAM-ABP) hydrogel actuator has excellent mechanical strength (tensile strength of 3.1 ± 0.3 MPa) and response speed (temperature (45 °C): bending speed of 2400.3°/s; near-infrared (NIR) light: bending speed of 356.4°/s; electricity (2 V): bending speed of 180°/s; water (10 °C): recovery speed of 30.0°/s). In addition, the good photothermal properties and magnetic conductivity of Fe 3 O 4 nanoparticles provide precise remotely controllable light-and magnetic-actuated properties for the hydrogel actuator. The Ag microsheets with excellent conductivity (1.4 × 10 4 S/cm) provide remotely controllable electrical-actuated property for the hydrogel actuator. Combined with the responsiveness of P(NIPAM-ABP), the actuator can achieve short-range actuation including temperature-, ethanol-, and salt-responses. More importantly, it can achieve remote actuation including light, electrical, and magnetic responses. Finally, the Fe 3 O 4 /P(NIPAM-ABP) fibers can provide excellent anisotropic structures for the actuator to achieve precise deformational programmability. Inspired by some phenomena in nature, several actuating devices with the above characteristics have been successfully developed. This study can provide a general method for multifunctional anisotropic hydrogel actuators and will provide a new strategy for exploring smart materials suitable for complex bioinspired systems.

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Section: Introductionmentioning

confidence: 99%

Remotely Controlled Light/Electric/Magnetic Multiresponsive Hydrogel for Fast Actuations

Wei

Chen

et al. 2023

ACS Appl. Mater. Interfaces

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“…Owing to their biocompatibility, hydrophilicity, and tissue-like high water content, hydrogels are ideal soft materials having potential applications in biological tissues. , In addition, by incorporating ionic- or electronically conductive materials to hydrogels, they are also widely explored as conductive and stretchable materials with potential applications in smart skins, implantable devices, and wearable electronic sensors. − However, conventional hydrogels are mechanically weak owing to their heterogeneously crosslinked polymer networks and lack of energy dissipation mechanisms. For example, common polyacrylamide (PAAm) or poly(acrylic acid) hydrogels exhibit high transparence, high water content but weak mechanical properties. , An appropriate structural design can impart PAAm hydrogels with various attractive properties, including the desired morphologies, optical, improved tensile toughness, and strength or fracture resistance, while retaining their high water content . Mimicking natural nanocomposites, applying a structural design at the nanoscale is an effective strategy toward the synthesis of artificial soft materials with the desired physical and mechanical properties …”

Section: Introductionmentioning

confidence: 99%

Co-Self-Assembly of Amphiphiles into Nanocomposite Hydrogels with Tailored Morphological and Mechanical Properties

Yue

Hayashi

Yokota

2023

ACS Appl. Mater. Interfaces

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As one of the most amazing aspects of life, all living organisms are formed by self-assembly, a fundamental biological design process in which ordered nanostructures are assembled from small parts. For example, most of the biological tissues contain structurally soft and hard parts that are usually hierarchically organized at nano or micro levels to achieve specific functions. Hydrogels are one of the most promising soft materials owing to their potential applications in building of biological tissues and stretchable sensors. In this work, a series of hydrogels are synthesized through the co-self-assembly of two types of amphiphiles in their aqueous solution prior to polymerization. Soft and hard parts with nanostructures of different order parameters are incorporated into the hydrogels. The hydrophilic segment (as soft phases) of the polymer network provides water absorption, fluid flow, and softness, whereas the hydrophobic segment (as hard phases) provides strength and tearing and fracture resistance. Appropriate soft/hard nanostructures and their interfaces allow for the tailoring of the desired morphological and mechanical properties, including a different wetting ability, toughness, energy dissipation, self-recovery, and fracture resistance arising from their nanostructures. This work provides insights into the design of nanostructured anisotropic hydrogels with controlled morphological and mechanical properties.

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“…Hydrogel is a three-dimensional (3D) crosslinked hydrophilic polymer network capable of absorbing, retaining, and releasing significant water in a controlled fashion. − The polymer chains in a hydrogel network are usually crosslinked by physical, chemical, or dual crosslinking. Physical crosslinking involves the chains crosslinking by weak secondary forces, i.e., hydrogen bonding, electrostatic interactions, hydrophobic interactions, molecular entanglements, etc., and are called physical hydrogels. , In chemical crosslinking, polymer chains are crosslinked by strong covalent bonds using a chemical crosslinker, such as divinyl sulfone, aldehydes, and their derivatives, epichlorohydrin, etc.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Cellulose Hydrogels and Hydrogel Nanocomposites Reinforced by Crystalline Cellulose Nanofibers (CNFs) as a Water Reservoir for Agriculture Use

Das

Bhattacharjee

Bhaladhare

2023

ACS Appl. Polym. Mater.

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An effective strategy for the management of available water and fertilizers is imperative to improve agricultural production and food quality, including releasing them sustainably to the soil and plants. Polymeric hydrogels with three-dimensional (3D) networks can absorb ample water and soluble fertilizers without network dissolution. Subsequently, the absorbed water and fertilizers can be released to arid and semi-arid agricultural land to furnish enough moisture and nutrients for plant growth. In this study, carboxymethyl cellulose sodium salt (NaCMC)- and hydroxyethyl cellulose (HEC)-based hydrogels have been synthesized using citric acid (CA) as a crosslinker. The Fourier transform infrared (FTIR) spectroscopy study revealed the formation of hydrogels with porous structures depicted by field emission scanning electron microscopy images. The prepared hydrogels have shown a remarkable swelling ratio of ∼1070% for the hydrogel prepared using NaCMC/HEC: 2/1 and ∼840% for NaCMC/HEC: 3/1 and a reduction in the swelling ratio with increasing crosslinking density. Moreover, crystalline (shown by X-ray diffraction) cellulose nanofibers (CNFs: ∼600 nm), prepared by acid (H2SO4) hydrolysis of cotton fibers, have been used to prepare hydrogel nanocomposites. The evaluation of hydrogel nanocomposites’ mechanical properties (universal testing matching test) depicted an improved tensile strength (16.27 MPa using 0.7% CNFs) compared to that of the hydrogel without CNFs. The soil burial test for biodegradation study of prepared hydrogels revealed soil degradation of hydrogel, confirmed by FTIR analysis and visual appearance. The current study provides comprehensive data establishing the potential of hydrogels for agriculture applications.

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Hydrochar-embedded carboxymethyl cellulose-g-poly(acrylic acid) hydrogel as stable soil water retention and nutrient release agent for plant growth

Cited by 56 publications

References 44 publications

Remotely Controlled Light/Electric/Magnetic Multiresponsive Hydrogel for Fast Actuations

Remotely Controlled Light/Electric/Magnetic Multiresponsive Hydrogel for Fast Actuations

Co-Self-Assembly of Amphiphiles into Nanocomposite Hydrogels with Tailored Morphological and Mechanical Properties

Preparation of Cellulose Hydrogels and Hydrogel Nanocomposites Reinforced by Crystalline Cellulose Nanofibers (CNFs) as a Water Reservoir for Agriculture Use

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