Synthesis of poly(sodium acrylate‐<i>co</i>‐sodium 1‐(acryloyloxy) propan‐2‐yl phosphate) and comparative study on its swelling properties with poly(sodium acrylate) and poly(sodium acrylate‐<i>co</i>‐2‐hydroxypropyl acrylate)

Chen, Zhenbin; Liu, Mingzhu; Qi, Xiaohua; Liu, Zhen

doi:10.1002/pen.20747

Cited by 13 publications

(11 citation statements)

References 22 publications

(13 reference statements)

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“…The deswelling rate exceeds the swelling rate, the water absorbency begins to decrease, and an overshooting effect is observed till a new equilibrium reaches. For multivalent cations, both Ca 2+ and Al 3+ , overshooting effect appear . But for the monovalent cations, the obvious overshooting effect is not observed as shown in Fig.…”

Section: Resultssupporting

confidence: 80%

“…Thus, the equilibrium water absorbency increases in the pH range of 2.2–6.1. With further increase of pH value, large amount of Na + bond to polymer network and decrease the osmotic pressure and repulsion force . At the same time, the chelation becomes strong.…”

Section: Resultsmentioning

confidence: 99%

“…With large amount of Na + diffusing into polymer network, the ratio of oxygen and sodium decreases. The coordination methods (interchains and intrachains) and coordination numbers change correspondingly , which makes the hydrogel network stretch. Therefore, the equilibrium water absorbency increases again with increasing pH value from 7.0 to 11.2.…”

Section: Resultsmentioning

confidence: 99%

“…This phenomenon may be attributed to the complexing ability of the cations to anionic groups on the polymer chains and the hydration of cation. As we have reported previously , the theory of hard and soft acids and bases is used to determine the stability of complex compounds. For cations, the hardness order is listed as follows: Al 3+ > Mg 2+ > Ca 2+ > Ba 2+ > Na + ≥ NH 4 + ≥ K + .…”

Section: Resultsmentioning

confidence: 99%

“…Díez‐Peña et al studied the swelling kinetics of poly( N ‐isopropylacrylamide‐ co ‐methacrylic acid), and an overshooting effect was observed under acidic medium . As a continuous work on superabsorbents , a fast swelling macroporous superabsorbent composite was prepared by copolymerization of partially neutralized acrylic acid (AANa), 2‐acryloylamino‐2‐methyl‐1‐propanesulfonic acid (AMPS), and attapulgite (APT) using sodium bicarbonate (NaHCO 3 ) as a foaming agent. And then, our attention focused on the swelling behaviors of this kind of sulfonic acid macroporous superabsorbent composite.…”

Section: Introductionmentioning

confidence: 99%

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Study on swelling behavior of poly(sodium acrylate-co-2-acryloylamino-2-methyl-1-propanesulfonic acid)/attapulgite macroporous superabsorbent composite

Liu

Chen

2014

Polym Eng Sci

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A fast swelling sulfonic acid macroporous superabsorbent composite is prepared by copolymerization of partially neutralized acrylic acid, 2‐acryloylamino‐2‐methyl‐1‐propanesulfonic acid, and attapulgite. The effects of pH values, ions, and their concentration on swelling behavior of sample are investigated. The results show that the swelling behavior of sample is affected by pH value. The supercase Π diffusion is observed in all NaCl solutions with different pH value. An overshooting effect appears in all solutions containing multivalent cations. This phenomenon may be attributed to the reorganization of the gel structure due to the formation of complex compound between cation and polymer network. A quantitative kinetics model proposed by Díez‐Peña is used to interprete it and the theoretical curves are in good agreement with the experimental data. For anions, it shows little effect on swelling process, and supercase Π diffusion is also observed no matter which kind of anion exists in swelling medium. POLYM. ENG. SCI., 55:681–687, 2015. © 2014 Society of Plastics Engineers

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Section: Resultssupporting

confidence: 80%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Study on swelling behavior of poly(sodium acrylate-co-2-acryloylamino-2-methyl-1-propanesulfonic acid)/attapulgite macroporous superabsorbent composite

Liu

Chen

2014

Polym Eng Sci

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Superabsorbent Materials

Wang¹,

Wang²

2009

Kirk-Othmer Encyclopedia of Chemical Technology

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Superabsorbent materials (SAMs) are hydrophilic polymer networks that can rapidly absorb water at amounts hundreds or even thousands times their own mass, and they can retain the absorbed water for a long time even under some pressure. Because of their excellent properties, SAMs are mainly used in disposable hygiene products as substitutes for traditional absorbents (cotton, sponge, wood pulp, and colloidal silica) and used in modern agriculture as water‐saving materials. Since the commercialization of the first SAM in 1978, the global yield and consumption of SAM was dramatically increased year by year, and the applications of such materials were also extended to other fields, such as wastewater treatment, medicine, construction, and sealing materials. Although SAMs are only decades old, they has developed into one of the most potential and prospective polymer materials in the market. Common SAMs are generally white sugar‐like hygroscopic materials, which can be classified as the following three types: starch‐based SAM, cellulose‐based SAM, and synthetic SAM. Today, the common commercial SAMs are cross‐linked sodium polyacrylate prepared through solution or inverse‐suspension polymerization techniques. In allusion to the drawbacks of currently prepared SAMs (including low salt‐resistance, high production cost, and poor gel strength), multiple kinds of raw materials and preparation methods were developed and adopted by manufacturers. Based on the above description, the development background, characteristics, chemical structures, type, physical and chemical properties of SAM, and the corresponding applied research works and future development prospects are introduced in this article.

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Preparation and adsorption selectivity of rutin molecularly imprinted polymers

Chen

et al. 2011

J of Applied Polymer Sci

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Molecularly imprinted polymer (MIP) for Rutin had been prepared through solution polymerization by redox initiation. The effects of monomers, crosslinker, initiators, polymerization time, and temperature on adsorption selectivity for Rutin were investigated and optimized. The structure and surface morphology of MIP were evaluated by Fourier transform infrared spectroscopy and scanning electron microscopy, respectively. The synthesized MIP under the optimal conditions showed a specific recognition of Rutin from the mixture of Rutin and Isorhamnetin. And the maximal separation degree of Rutin was 5.0. V C 2011 Wiley Periodicals, Inc. J Appl Polym Sci 123: [903][904][905][906][907][908][909][910][911][912] 2012

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Synthesis of poly(sodium acrylate‐co‐sodium 1‐(acryloyloxy) propan‐2‐yl phosphate) and comparative study on its swelling properties with poly(sodium acrylate) and poly(sodium acrylate‐co‐2‐hydroxypropyl acrylate)

Cited by 13 publications

References 22 publications

Study on swelling behavior of poly(sodium acrylate-co-2-acryloylamino-2-methyl-1-propanesulfonic acid)/attapulgite macroporous superabsorbent composite

Study on swelling behavior of poly(sodium acrylate-co-2-acryloylamino-2-methyl-1-propanesulfonic acid)/attapulgite macroporous superabsorbent composite

Superabsorbent Materials

Preparation and adsorption selectivity of rutin molecularly imprinted polymers

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