Novel degradable superabsorbent materials of silicate/acrylic‐based polymer hybrids

Ye, Hua; Zhao, Jianqing; Zhang, Yong‐Hua

doi:10.1002/app.13274

Cited by 28 publications

(21 citation statements)

References 11 publications

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“…36,37 In addition, peaks at 1458 and 1179 cm À1 corresponding to the À ÀCOÀ ÀOÀ À and OH coupling interactions of the carboxylic group and CÀ ÀN stretching vibrations can also be observed. 38 The peak at 1055 cm…”

mentioning

confidence: 98%

Synthesis and properties of carboxymethyl cellulose‐graft‐poly(acrylic acid‐co‐acrylamide) as a novel cellulose‐based superabsorbent

Suo

Qian

Yao

et al. 2006

J of Applied Polymer Sci

115

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A new cellulose-based superabsorbent polymer, carboxymethyl cellulose-graft-poly(acrylic acid-co-acrylamide), was prepared by the free-radical grafting solution polymerization of acrylic acid (AA) and acrylamide (AM) monomers onto carboxymethyl cellulose (CMC) in the presence of N,N 0 -methylenebisacrylamide as a crosslinker with a redox couple of potassium persulfate and sodium metabisulfite as an initiator. The influences of reaction variables such as the initiator content, crosslinker content, bath temperature, molar ratio of AA to AM, and weight ratio of the monomers to CMC on the water absorbency of the carboxymethylcellulose-graft-poly(acrylic acid-co-acrylamide) copolymer were investigated. The copolymer's structures were characterized with Fourier transform infrared spectroscopy. The optimum reaction conditions were obtained as follows: the bath temperature was 508C; the molar ratio of AA to AM was 3 : 1; the mass ratio of the monomers to CMC was 4 : 1; and the weight percentages of the crosslinker and initiator with respect to the monomers were 0.75 and 1%, respectively. The maximum water absorbency of the optimized product was 920 g/ g for distilled water and 85 g/g for a 0.9 wt % aqueous NaCl solution. In addition, the superabsorbent possessed good water retention and salt resistance.

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mentioning

confidence: 98%

Synthesis and properties of carboxymethyl cellulose‐graft‐poly(acrylic acid‐co‐acrylamide) as a novel cellulose‐based superabsorbent

Suo

Qian

Yao

et al. 2006

J of Applied Polymer Sci

115

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“…201 The obtained material can be applied as environmentally-friendly superabsorbent because the crosslinking bonds^Si-O-(O]) C-are hydrolysable and the sorbent dissolves aer several days aer application.…”

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confidence: 99%

Silicic acid condensation under the influence of water-soluble polymers: from biology to new materials

et al. 2017

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Silicon is among the most abundant elements on the Earth. It occurs in many minerals and plays an important role in several biochemical processes. Some living organisms use silicon dioxide as a substrate for building elements of their bodies. Unicellular diatom algae build frustules from silicon dioxide. The skeleton of siliceous sponges is a silicaprotein composite. Similarly, rice hulls which protect seeds, contain silica as an important component. The living organisms assimilate silicon from the environment in the form of silicic acid. However, the biochemical mechanisms involved in the transformation of silicic acid to solid siliceous materials are still poorly understood.Evidently, condensation of silicic acid in the living organisms proceeds under control of biopolymers and it is important to know how various types of polymers influence the condensation. Bio-inspired chemistry involving the interaction between polymeric silicic acid and functional polymers results in interesting composite materials, including nanoparticles and bulk materials. This review contains a brief description of the mechanism of silicic acid condensation in aqueous medium and also includes a discussion on various precursors of silicic acid. The main focus of the review is on the influence of polymers bearing nitrogen and oxygen-containing functional groups on silicic acid condensation starting from monomer to three-dimensional polymer. Influence of molecular weight of the organic polymer on the condensation and structure of the resulting product is also elaborated. The biological importance of the obtained data and strategies for novel applications of the synthesized composite materials are described in the concluding section of the review. The biomimetic condensation processes open up new vistas for development of novel materials and applications in the biomedical and process industries.

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“…Ye et al [106] prepared a degradable superabsorbent material based on a silicate/acrylic-based polymer. They proposed a hydrolysis process from Si-O-C bonds in aqueous solution which degraded the hybrid hydrogels in a matter of days.…”

Section: Trends Of Biodegradable Polymer Materials In Agriculture Appmentioning

confidence: 99%

Polymers and its applications in agriculture

et al. 2017

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Graphical Abstract RbstractPolymers are a class of soft materials with numerous and versatile mechanical and chemical properties that can be tuned specific to their application. Agriculture is an expanding area due to the requirement for indispensable food to meet the demands of a growing global population. Consequently, development of technology to improve the quality of the soil and agriculture manages is still under development. Intelligent agricultural supplies (controlled or slow release agrochemicals and superabsorbents) and biosorbents contribute to an expanding niche using technology from polymers. This review elucidates the state-of-the-art and will discuss some important aspects of using polymers in intelligent fertilizers, as well as superabsorbent, biosorbent and biodegradation processes in agriculture that are environmentally, technically, socially, and economically sustainable.

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Novel degradable superabsorbent materials of silicate/acrylic‐based polymer hybrids

Cited by 28 publications

References 11 publications

Synthesis and properties of carboxymethyl cellulose‐graft‐poly(acrylic acid‐co‐acrylamide) as a novel cellulose‐based superabsorbent

Synthesis and properties of carboxymethyl cellulose‐graft‐poly(acrylic acid‐co‐acrylamide) as a novel cellulose‐based superabsorbent

Silicic acid condensation under the influence of water-soluble polymers: from biology to new materials

Polymers and its applications in agriculture

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