Preliminary study of the relationship between water absorbency and zeta potentials of crosslinked poly(acrylic acid)

2011 ◽  
Vol 152 ◽  
pp. e260-e262 ◽  
Author(s):  
Liren Fan ◽  
Ming Zeng ◽  
Sen Zhou ◽  
liyuan lu ◽  
Yiwan huang
Keyword(s):  
Acrylic Acid ◽  
Water Absorbency ◽  
Zeta Potentials ◽  
Preliminary Study ◽  
The Relationship ◽  
Poly Acrylic Acid

Dually cross-linked single network poly(acrylic acid) hydrogels with superior mechanical properties and water absorbency

Soft Matter ◽  
2016 ◽  
Vol 12 (24) ◽  
pp. 5420-5428 ◽  
Author(s):  
Ming Zhong ◽  
Yi-Tao Liu ◽  
Xiao-Ying Liu ◽  
Fu-Kuan Shi ◽  
Li-Qin Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Acrylic Acid ◽  
Water Absorbency ◽  
Superior Mechanical Properties ◽  
Poly Acrylic Acid

Ultrasonic Synthesis and Properties of Sodium Lignosulfonate-grafted Poly(Acrylic Acid-co-Vinyl Alcohol) Composite Superabsorbent Polymer

2016 ◽  
Vol 69 (10) ◽  
pp. 1155 ◽  
Author(s):  
Chen Hao ◽  
Jun Li ◽  
Qiang He ◽  
Zilong Zhou ◽  
Xiaowei Guo ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Vinyl Alcohol ◽  
High Efficiency ◽  
Orthogonal Experiment ◽  
Physiological Saline ◽  
Water Absorbency ◽  
Superabsorbent Polymer ◽  
Sodium Lignosulfonate ◽  
Scanning Calorimetry ◽  
Poly Acrylic Acid

In this paper, a green and high-efficiency method (ultrasound synthesis) has been applied in the preparation of a sodium lignosulfonate-grafted poly(acrylic acid-co-vinyl alcohol) superabsorbent polymer (SL-P(AA-co-VA)). By Fourier-transform infrared spectroscopy, scanning electron microscopy, and thermogravimetry–differential scanning calorimetry, the successful preparation was confirmed. An L16(4)5 orthogonal experiment was carried out to optimize synthetic conditions for SL-P(AA-co-VA). Under the optimized synthetic conditions, maximum water absorbency (949 g g–1) and physiological saline absorbency (62 g g–1) were achieved. Adjusting pH reduces the water absorbency of SL-P(AA-co-VA), as does the presence of metal ions. However, a rise in temperature does not have a significant influence on it. In general, both the water absorbency and physiological saline absorbency of SL-P(AA-co-VA) were significantly improved versus P(AA-co-VA) superabsorbent.

Effect of the Ion Strengths in Different Salt Solutions on the Absorbencies of Poly(acrylic acid-co-acrylamide) Superabsorbent by Inverse Suspension Polymerization

2012 ◽  
Vol 550-553 ◽  
pp. 711-715
Author(s):  
Jian Jun Xie ◽  
Qing Xin Yao ◽  
Nian Zeng ◽  
Chu Ding
Keyword(s):  
Acrylic Acid ◽  
Metal Cation ◽  
Suspension Polymerization ◽  
The Self ◽  
Salt Solutions ◽  
Swelling Properties ◽  
Anionic Group ◽  
Inverse Suspension Polymerization ◽  
The Relationship ◽  
Poly Acrylic Acid

The absorbencies of poly(acrylic acid-co-acrylamide) (PAAM) are measured for the ion strengths of the salt solutions using the self-made PAAM by inverse suspension polymerization. The effects of various salt solutions on the swelling properties were studied systemically, and the relationship between the absorbency (Q) of PAAM and the concentrations of different salt solutions(c) could be expressed as Q=kcn. The absorbencies of PAAM decrease obviously with the ion strengths (less than 0.03mol/kg) and had no great change when the ion strengths were higher than 0.03mol/kg for the same solution systems. The absorbency decreased with an increase in charge of the metal cation. The absorbencies of the PAAM in the sodium solutions with different anion decreased with an increase of the ion strengths. However, the absorbencies increased with the increase in charge of the anionic group and were in order PO43->CO32->Cl-.

scholarly journals Super water absorbency OMMT/PAA hydrogel materials with excellent mechanical properties

RSC Advances ◽  
2017 ◽  
Vol 7 (24) ◽  
pp. 14504-14510 ◽  
Author(s):  
Yuqi Zhang ◽  
Yao Liu ◽  
Jiaqi Liu ◽  
Pu Guo ◽  
Liping Heng
Keyword(s):  
Mechanical Properties ◽  
Acrylic Acid ◽  
Uv Irradiation ◽  
Water Absorbency ◽  
Composite Hydrogels ◽  
Poly Acrylic Acid

Montmorillonite/poly(acrylic acid) composite hydrogels, fabricated through UV irradiation polymerization, have a super water absorbency of 2786 g g−1 and excellent mechanical properties.

Synthesis and Water Absorbency of Poly(acrylic acid-co-acrylamide)

2011 ◽  
Vol 250-253 ◽  
pp. 695-698 ◽  
Author(s):  
Ting Xi Li ◽  
Na Kong ◽  
Su Su Gao ◽  
Peng Sui ◽  
Yu Hua Zhao ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Water Absorption ◽  
Aluminum Hydroxide ◽  
Potassium Persulfate ◽  
Molar Ratio ◽  
Water Absorbency ◽  
Mass Ratio ◽  
New Type ◽  
Poly Acrylic Acid

A new type of poly (acrylic acid-co-acrylamide) was synthesized by copolymerization method using acrylic acid (AA) and acrylamide (AM) as monomer. Synthesis technology was as follow: the acrylamide and acrylic acid molar ratio was 0.3-0.4, the temperature was 55-60°C, the degree of neutralization of AA was 70%, the potassium persulfate and monomer mass ratio was 0.2%-0.3%, the aluminum hydroxide and monomer mass radio was 0.03%-0.05%. The water absorption was more than thousands of times.

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