Novel approach for attapulgite/poly(acrylic acid) (ATP/PAA) nanocomposite microgels as selective adsorbent for Pb(II) Ion

2014 ◽  
Vol 74 ◽  
pp. 72-80 ◽  
Author(s):  
Peng Liu ◽  
Liping Jiang ◽  
Longxiang Zhu ◽  
Aiqin Wang
Keyword(s):  
Acrylic Acid ◽  
Novel Approach ◽  
Selective Adsorbent ◽  
Poly Acrylic Acid

A novel approach of homogenous inorganic/organic composites through in situ precipitation in poly-acrylic acid gel

2007 ◽  
Vol 61 (3) ◽  
pp. 629-634 ◽  
Author(s):  
Xinyu Shen ◽  
Hua Tong ◽  
Zhihong Zhu ◽  
Peng Wan ◽  
Jiming Hu
Keyword(s):  
Acrylic Acid ◽  
Novel Approach ◽  
Organic Composites ◽  
Acid Gel ◽  
Poly Acrylic Acid

A Novel Approach of Homogenous Inorganic/Organic Composite through In Situ Precipitation in Gelatine/Poly(Acrylic Acid) Gel

2007 ◽  
Vol 361-363 ◽  
pp. 499-502 ◽  
Author(s):  
Xu An Cai ◽  
Hua Tong ◽  
Yu Zhao ◽  
Xin Yu Shen ◽  
Ji Ming Hu
Keyword(s):  
Acrylic Acid ◽  
Inorganic Particles ◽  
Novel Approach ◽  
Nucleation Sites ◽  
High Uniformity ◽  
3D Network ◽  
Organic Matrices ◽  
Acid Gel ◽  
Poly Acrylic Acid

A new in situ precipitation technique was developed to promote high-affinity nucleation and growth of calcium phosphate in the polymer hydrogel. Gelatine/poly(acrylic acid)/hydroxyapatite (HA) composite has been prepared using template-driven reaction. Nano-sized hydroxyapatite particles were distributed within organic template homogenously, furthermore, inorganic particles were fine and uniform. During the composite process, 3D network of organic matrices and homogenous distributed nucleation sites played an important role in the superfine interaction of HA and hydrogel. This method provides an efficient approach toward inorganic/organic nanocomposites with high-uniformity decentralization for biomimetic replant applications. This paper discussed the mechanism of the reaction, and the concept of in situ precipitation in gel was brought forward.

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

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.

Reactions of macroions with ester and carboxylic groups of polymers

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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