Poly(acrylic acid) + zinc diacetate composites: High temperature service and electric conductivity

Poly (acrylic acid)/montmorillonite (PAA/MMT) superabsorbent composites was synthesized by high temperature rapid-induced solvent polymerization reaction. The structure of this composites was investigated by XRD. The relationship between reaction condition and water-absorbing capacity of this composites was researched. The result shows that, when montmorillonite content is less than 5 wt%, PAA/MMT composites is nanophase materials. With the increase of cross linker, neutralization degree of acrylic acid, or montmorillonite content, water-absorbing capacity of prepared composites first rises then decreases. When cross linker content is 0.225 wt%, neutralization degree is 70%, and montmorillonite content is 5 wt%, PAA/MMT composites possess microporous structure and its water-absorbing capacity is 511 times of the solid weight itself.

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Soft ionic liquid based resistive memory characteristics in a two terminal discrete polydimethylsiloxane cylindrical microchannel

Journal of Materials Chemistry C ◽

10.1039/d0tc03334k ◽

2020 ◽

Vol 8 (38) ◽

pp. 13368-13374

Author(s):

Muhammad Umair Khan ◽

Gul Hassan ◽

Jinho Bae

Keyword(s):

Ionic Liquid ◽

Acrylic Acid ◽

Sodium Hydroxide ◽

Sodium Salt ◽

Resistive Memory ◽

Cylindrical Microchannel ◽

Memory Characteristics ◽

Poly Acrylic Acid

This paper proposes a novel soft ionic liquid (IL) electrically functional device that displays resistive memory characteristics using poly(acrylic acid) partial sodium salt (PAA-Na+:H2O) solution gel and sodium hydroxide (NaOH) in a thin polydimethylsiloxane (PDMS) cylindrical microchannel.

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Synthesis of composite superabsorbent of poly (acrylic acid sodium)/humic acid by using glow discharge electrolysis plasma

ACTA AGRONOMICA SINICA ◽

10.3724/sp.j.1095.2012.00224 ◽

2012 ◽

Vol 29 (4) ◽

pp. 376

Author(s):

Jie REN ◽

Lihong TAO ◽

Jinzhang GAO ◽

Yan LI ◽

Hongwei LIU ◽

...

Keyword(s):

Humic Acid ◽

Glow Discharge ◽

Acrylic Acid ◽

Glow Discharge Electrolysis ◽

Glow Discharge Electrolysis Plasma ◽

Poly Acrylic Acid

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Reactions of macroions with ester and carboxylic groups of polymers

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19872194 ◽

1987 ◽

Vol 52 (9) ◽

pp. 2194-2203

Author(s):

Miloslav Kučera ◽

Dušan Kimmer ◽

Karla Majerová ◽

Josef Majer

Keyword(s):

Maleic Anhydride ◽

Acrylic Acid ◽

Methyl Methacrylate ◽

Bond Formation ◽

Covalent Bond ◽

The Other ◽

Poly Methyl Methacrylate ◽

Other Hand ◽

Carboxylic Groups ◽

Poly Acrylic Acid

In the reaction of dianions with poly(methyl methacrylate), only an insignificant amount of insoluble crosslinked product is obtained. If, however, the concentration of grafting dianions approaches that of ester groups, the amount of poly(methyl methacrylate) which may thus be crosslinked becomes quite significant. Dications, too, can bring about crosslinking of only an insignificant number of poly(methyl methacrylate) chains. Carboxylic groups in poly(acrylic acid) react with dianions and dications in an anhydrous medium similarly to ester groups. On the other hand, in the presence of a cocatalytic amount of water dications are more readily bound to carboxylic groups, forming a covalent bond. The relatively highest efficiency was observed in the bond formation between dication and the poly[styrene-alt-(maleic anhydride)], both in an anhydrous medium and in the presence of H2O.

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Fabrication and Characterization of Chitosan-Poly(acrylic acid) Magnetic Nanospheres

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2009.c139 ◽

2009 ◽

Vol 9 (2) ◽

pp. 1287-1290 ◽

Cited By ~ 5

Author(s):

Yuqing Ge ◽

Song Zhang ◽

Shiying He ◽

Yu Zhang ◽

Ning Gu

Keyword(s):

Acrylic Acid ◽

Magnetic Nanospheres ◽

Fabrication And Characterization ◽

Poly Acrylic Acid

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Synthesis, characterization, and their some chemical and biological properties of PVA/PAA/nPS hydrogel nanocomposites: Hydrogel and wound dressing

Journal of Bioactive and Compatible Polymers ◽

10.1177/0883911520921474 ◽

2020 ◽

Vol 35 (3) ◽

pp. 203-215

Author(s):

Mehmet Emin Diken ◽

Berna Koçer Kizilduman ◽

Begümhan Yilmaz Kardaş ◽

Enes Emre Doğan ◽

Mehmet Doğan ◽

...

Keyword(s):

Fourier Transform ◽

Acrylic Acid ◽

Infrared Spectra ◽

Vinyl Alcohol ◽

Fourier Transform Infrared ◽

Poly Vinyl Alcohol ◽

Seed Particles ◽

Fourier Transform Infrared Spectra ◽

Hydrogel Nanocomposites ◽

Poly Acrylic Acid

The nanocomposite hydrogels were prepared by dispersing of the nanopomegranate seed particles into poly(vinyl alcohol)/poly(acrylic acid) blend matrix in an aqueous medium by the solvent casting method. These hydrogels were characterized using scanning electron microscopy, Fourier transform infrared spectra, differential scanning calorimetry, and optical contact angle instruments. The nanopomegranate seed, blend, and hydrogel nanocomposites were tested for microbial activity. In addition, cytocompatibilities of these blend and hydrogel nanocomposites/composites were tested on human lymphocyte with in vitro MTS cell viability assays. Fourier transform infrared spectra revealed that esterification reaction took place among functional groups in the structure of poly(vinyl alcohol) and poly(acrylic acid). The hydrophilic properties of all hydrogels decreased with increasing nanopomegranate seed content. The mean diameters of the nanopomegranate seed particles were about 88 nm. Nanopomegranate seed particles demonstrated antibacterial properties against gram-positive bacteria, Staphylococcus aureus, and gram-negative bacteria, Escherichia coli. The lymphocyte viabilities increased after addition of nanopomegranate seeds into the polymer blend. The swelling behavior of blend and hydrogels was dependent on the cross-linking density created by the reaction between poly(vinyl alcohol)/poly(acrylic acid) blend and nanopomegranate seed. Scanning electron microscopy images were highly consistent with Fourier transform infrared spectra, differential scanning calorimetry, and antibacterial activity results.

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