Urea free synthesis of chitin-based acrylate superabsorbent polymers under homogeneous conditions: Effects of the degree of deacetylation and the molecular weight

Liu, T.G.; Wang, Y.T.; Li, B.; Deng, Hongbing; Huang, Zijing; Qian, Liwu; Wang, X.

doi:10.1016/j.carbpol.2017.06.108

Cited by 34 publications

(22 citation statements)

References 40 publications

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“…semi-synthetic [28,29]) . Synthetic SAPs are generally synthetized from petrochemically-based monomers such as acrylates or acrylamides [27,[30][31][32] while natural SAPs include polypeptides and polysaccharides [33,34]. In case of semi-synthetic SAPs, natural and synthetic building blocks are generally combined to create a SAP exhibiting fine-tuned characteristics towards specialized applications [29,35].…”

Section: Classification With Respect To General Building Blocksmentioning

confidence: 99%

Superabsorbent polymers: A review on the characteristics and applications of synthetic, polysaccharide-based, semi-synthetic and ‘smart’ derivatives

Mignon

Belie

Dubruel

et al. 2019

European Polymer Journal

184

108

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The current review provides an overview of different types of superabsorbent polymers (SAPs) together with appropriate strategies elaborated to enable their synthesis. The main focus will be on polysaccharide-based, semi-synthetic and 'smart' SAPs along with their derivatives. SAPs have already shown their use in a plethora of applications including diapers, the biomedical field, agriculture, etc.The different polymer classification possibilities are discussed, as well as the classification of the constituting building blocks. The main part of SAPs still has a synthetic origin. However, as they are often not biocompatible, biodegradable or renewable, natural SAPs based on polysaccharides have gained increasing interest. Due to the low solubility of synthetic polymers, purification problems or the need for organic solvents, a trend has emerged towards combining polysaccharides with synthetic monomers to create semi-synthetic, hybrid SAPs for specialized applications with fine-tuned properties including wound dressings, fertilizers or self-healing concrete. These specialized, semi-synthetic SAPs offer strong potential for a series of applications in the future. However, future research in this respect is still needed to optimize homogeneity and to increase gel fractions. A final part of this review includes 'smart' SAPs such as SAPs with a T-, electro-and pH-sensitivity. These 'smart' SAPs are especially becoming useful for certain biomedical applications such as drug release for which an in vivo location can be targeted. The use of 'smart', semi-synthetic SAPs with fine-tuned characteristics combining the best characteristics of both synthetic and natural SAPs, offer the greatest potential for the future.

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Section: Classification With Respect To General Building Blocksmentioning

confidence: 99%

Superabsorbent polymers: A review on the characteristics and applications of synthetic, polysaccharide-based, semi-synthetic and ‘smart’ derivatives

Mignon

Belie

Dubruel

et al. 2019

European Polymer Journal

184

108

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“…Therefore, there is a decrease in the space between chains of the polymeric network and the structure of superabsorbent is tighter and more stable. The elasticity of the network decreases and water molecules have more difficulty to enter the three-dimensional structure, resulting in a low swelling and absorption capacity [7,40,48]. Nevertheless, when there is insufficient crosslinking, superabsorbent material can partially dissolve in aqueous solution and lose its absorption capacity [15].…”

Section: Effect Of Crosslinker and Crosslinking Densitymentioning

confidence: 99%

“…Polysaccharides can have crystal regions in their structure that have been formed by hydrogen bonds. As a result, XRD can be used to analyze them [48,57]. XPS is a technique close to XRD but that is based on the emission of photoelectrons.…”

Section: Other Techniquesmentioning

confidence: 99%

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Biosourced Polysaccharide-Based Superabsorbents

et al. 2020

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In the last decades, many studies have been conducted on new materials to meet a growing industrial demand and to move scientific research forward. Superabsorbents are good examples of materials that have generated special attention in many fields for their ability to absorb and retain water up to 1000 times of their dry weight. They found many applications in hygiene products and other products, for a fast growing market of USD 9.58 Billion in 2019. Most of them are composed of synthetic polymers, which are often not environmentally friendly. Therefore, natural superabsorbents and particularly those based on polysaccharides have received a recent increased interest for their biodegradability, biocompatibility, and renewability. This review focuses on polysaccharide-based superabsorbents, on their properties, synthesis methods, and characterization. Their potential applications in many fields, such as biomedical and hygiene, agriculture, water treatment, and the building sector, are also reported with an interest in products already marketed.

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“…It can quickly absorb tens or even thousands of times the weight of liquid water [ 6 ], mainly owing to its three-dimensional network and large number of hydrophilic groups [ 7 ]. According to the existing research reports, SAP has been applied in various fields, such as health supplies [ 8 , 9 ], medical materials [ 10 , 11 ], sewage treatment [ 12 ] and agriculture [ 13 ]. In recent years, SAP as a soil modifier has shown beneficial effects in desertification soil restoration and soil water conservation in arid areas [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of eco-friendly carbohydrate-based superabsorbent polymers on seed germination and seedling growth of maize

et al. 2018

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Desertification is the degradation of land in arid and semi-arid areas. Nowadays, lack of water and desertification are extreme problems for plant survival and growth in the arid and semi-arid areas of the world. It becomes increasingly important as to how to let the plant absorb moisture more effectively for keeping growth strong. We synthesized superabsorbent polymers (SAPs) with carbohydrate and characterized them by Fourier transform infrared spectra analyses, scanning electron microscopy and thermogravimetric/differential thermal analyses. Then, a completely randomized experiment was conducted to assess the effect of carbohydrate-based SAPs on seed germination and seedling growth of maize in an artificial climate chest. The results showed that adding an appropriate amount of SAPs could improve root length, shoot length, total biomass, germination potential and germination rate. It indicates that this SAP is not toxic to plants and can promote seed germination, and at the same time provides a possibility of replacing other substrates.

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Urea free synthesis of chitin-based acrylate superabsorbent polymers under homogeneous conditions: Effects of the degree of deacetylation and the molecular weight

Cited by 34 publications

References 40 publications

Superabsorbent polymers: A review on the characteristics and applications of synthetic, polysaccharide-based, semi-synthetic and ‘smart’ derivatives

Superabsorbent polymers: A review on the characteristics and applications of synthetic, polysaccharide-based, semi-synthetic and ‘smart’ derivatives

Biosourced Polysaccharide-Based Superabsorbents

Effects of eco-friendly carbohydrate-based superabsorbent polymers on seed germination and seedling growth of maize

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