A novel Poly(vinyl alcohol) / carboxymethyl cellulose / yeast double degradable hydrogel with yeast foaming and double degradable property

Zhang, Min; Wan, Yu; Wen, Yanwei; Li, Chengtao; Kanwal, Aqsa

doi:10.1016/j.ecoenv.2019.109765

Cited by 22 publications

(5 citation statements)

References 48 publications

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“…For instance, the synthesized hydrogel (St/PVA/PAA) adsorbed MB through hydrogen bonding and electrostatic interaction. The result was a higher maximum MB adsorption rate (417 mg g −1 ) than the CMC/PVA/YE hydrogel [119]. Interestingly, even after five adsorption-desorption cycles, the St/PVA/PAA hydrogel still had a 70% MB removal efficiency, demonstrating its reusability.…”

Section: Separation Technologymentioning

confidence: 94%

Production of Polymer Hydrogel Composites and Their Applications

Sayed

2023

J Polym Environ

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Hydrogels are three-dimensional cross-linked stable network insoluble in water, which gives them a remarkable capacity to absorb both water and biological fluids. Hydrogel has been synthesized from natural or synthetic polymers and/or monomers, which have made tremendous advancements in many different applications. Composite hydrogel is a type of hydrogel prepared by grafting hydrophilic groups, such as hydroxyl (–OH), carboxylic acid (–COOH), imide (–CONH), sulfonic acid (–SO3H), amine (–NH2), and amide (–CONH2), into the polymer chain’s backbone and adding some additives such as kaolin, zeolite, or even different types of nanoparticles. Whereas the polymeric composite hydrogels exhibit stimuli for different properties such as pH, temperature, or light, which may affect swelling, mechanical properties, and self-healing, which in turn play vital roles in different areas. Hence, numerous efforts have been made to synthesize polymer-based composited hydrogels via physical or chemical crosslinking techniques to enhance their physiochemical, biological, and many other properties. Many researchers are currently paying attention to hydrogels and their applications, including wastewater treatment and purification, medical and biomedical applications, agricultural applications, and many other industrial applications. The aim of this review is to summarize the classification of composite hydrogels based on their chemical and physical crosslinking techniques, in addition to the different polymers and additives used to prepare composite hydrogels. Furthermore, the impact of hydrogel on health and the environment has been discussed. Other significant issues were also presented, including the challenges that face hydrogel production and application, which have been discussed.

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Section: Separation Technologymentioning

confidence: 94%

Production of Polymer Hydrogel Composites and Their Applications

Sayed

2023

J Polym Environ

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“…The pseudosecond-order model can describe the swelling of hydrogels in distilled water, this is because the swelling of hydrogels in distilled water causes their carboxyl groups to be ionized and electrostatic repulsions between molecular chains to dominate the system, leading to more swelling of the network. In addition, the osmotic pressure increases with the rate of absorption in the initial stage, facilitating faster swelling of the hydrogel network, and the rate of swelling between the hydrogel and distilled water is controlled mainly by chemical reactions [ 30 , 31 , 32 ].…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Starch-Based Acid- and Alkali-Resistant Hydrogels Optimized by Box–Behnken Response Surface Methodology

Han

Huang

et al. 2022

Gels

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Applying gel-type solid chlorine dioxide for the sustained release of chlorine dioxide has several shortcomings, such as no resistance to acid and alkali corrosion and poor mechanical properties. However, introducing quaternary ammonium, carboxyl, and amino groups into the hydrogel system can enhance its acid and alkali resistance. In this study, the effects of concentration of dry heat-modified starch, quaternized carboxymethyl cellulose, and chitin on the swelling behavior and mechanical properties of starch-based acid- and alkali-resistant hydrogels are investigated. The feasibility of the actual and predicted values of the tentative results is verified based on the response surface design to determine the optimal concentration ratio of acid- and alkali-resistant hydrogels. The results reveal that optimized process parameters are reliable. The maximum swelling ratio and compressive stress of the hydrogel are 5358.00% and 44.45 kPa, respectively, and its swelling behavior conforms to the pseudo second-order kinetic model. Thus, the present study can provide a new method of developing efficient starch-based chlorine dioxide hydrogels for the sustained release of chlorine dioxide.

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“…The freeze-dried core–shell hydrogels were weighed (W 0 ), added to 7 mL of disodium hydrogen phosphate at a concentration of 1/15 mol/L and 3 mL of potassium dihydrogen phosphate buffer at a concentration of 1/15 mol/L, and left to absorb water at 25 °C, removed at intervals of 20 min, dried on moist filter paper and precisely weighed (W t )—all of which was repeated several times until the swelling equilibrium was reached, and the experiments were conducted in parallel nine times. The swelling degree (SR) of the core–shell hydrogel was calculated according to the following equation [ 29 ]:

where W 0 and W t are the initial dry weight (g) and the mass (g) of the sample at t min of water absorption, respectively; SR (g/g) is the swelling degree of hydrogel.…”

Section: Experimental Methodsmentioning

confidence: 99%

Preparation of PVA–CS/SA–Ca2+ Hydrogel with Core–Shell Structure

et al. 2022

Self Cite

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Hydrogels are highly hydrophilic polymers that have been used in a wide range of applications. In this study, we prepared PVA–CS/SA–Ca2+ core–shell hydrogels with bilayer space by cross-linking PVA and CS to form a core structure and chelating SA and Ca2+ to form a shell structure to achieve multiple substance loading and multifunctional expression. The morphology and structure of core–shell hydrogels were characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The factors affecting the swelling properties of the hydrogel were studied. The results show that the PVA–CS/SA–Ca2+ hydrogel has obvious core and shell structures. The SA concentration and SA/Ca2+ cross-linking time show a positive correlation with the thickness of the shell structure; the PVA/CS mass ratio affects the structural characteristics of the core structure; and a higher CS content indicates the more obvious three-dimensional network structure of the hydrogel. The optimal experimental conditions for the swelling degree of the core–shell hydrogel were an SA concentration of 5%; an SA/Ca2+ cross-linking time of 90 min; a PVA/CS mass ratio of 1:0.7; and a maximum swelling degree of 50 g/g.

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A novel Poly(vinyl alcohol) / carboxymethyl cellulose / yeast double degradable hydrogel with yeast foaming and double degradable property

Cited by 22 publications

References 48 publications

Production of Polymer Hydrogel Composites and Their Applications

Production of Polymer Hydrogel Composites and Their Applications

Synthesis and Characterization of Starch-Based Acid- and Alkali-Resistant Hydrogels Optimized by Box–Behnken Response Surface Methodology

Preparation of PVA–CS/SA–Ca2+ Hydrogel with Core–Shell Structure

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