Acrylamide-itaconic acid superabsorbent polymers and superabsorbent polymer/mica nanocomposites

2011 ◽  
Vol 22 (5) ◽  
pp. 635-647 ◽  
Author(s):  
Daungtawan Foungfung ◽  
Siriwan Phattanarudee ◽  
Nispa Seetapan ◽  
Suda Kiatkamjornwong
Keyword(s):  
Itaconic Acid ◽  
Superabsorbent Polymer ◽  
Superabsorbent Polymers

scholarly journals Effective Enhancement of Water Absorbency of Itaconic Acid Based-Superabsorbent Polymer via Tunable Surface—Crosslinking

Polymers ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2782
Author(s):  
Yong-Rok Kwon ◽  
Jung-Soo Kim ◽  
Dong-Hyun Kim
Keyword(s):  
Itaconic Acid ◽  
Photoelectron Spectroscopy ◽  
Crosslinking Agent ◽  
Absorption Capacity ◽  
Gel Strength ◽  
Superabsorbent Polymer ◽  
Optimal Conditions ◽  
Retention Capacity ◽  
X Ray ◽  
Crosslinking Reactions

A superabsorbent polymer (SAP) was synthesized by copolymerizing itaconic acid and vinyl sulfonic acid. The typically low absorbency of itaconic acid-based SAPs under mechanical loads was improved by introducing surface crosslinking. Fourier-transform infrared spectroscopy and X-ray photoelectron spectroscopy were used to characterize the synthesis and surface-crosslinking reactions in the SAP. Various conditions for surface-crosslinking reactions, such as the surface-crosslinking solution, content of surface-crosslinking agent, and reaction temperature, were explored and correlated with the gel strength and absorption characteristics of the resulting SAP particles. The distilled water content in the surface-crosslinking solution strongly influenced the absorption capacity of the SAP, but this sensitivity decreased when acetone was used as a co-solvent. Itaconic acid-based SAP that was crosslinked under optimal conditions exhibited centrifuge retention capacity and absorbency under a load of 31.1 and 20.2, respectively.

scholarly journals Investigation of superabsorbent polymer absorbency at reduced chemical potential of water

2019 ◽  
Vol 268 ◽  
pp. 04010 ◽  
Author(s):  
Ariel Melendres ◽  
Judy An Antang ◽  
Christian Jake Manacob
Keyword(s):  
Chemical Potential ◽  
Chloride Concentration ◽  
Crosslinking Density ◽  
Superabsorbent Polymer ◽  
Sodium Chloride Concentration ◽  
Swelling Properties ◽  
Superabsorbent Polymers ◽  
Swelling Capacity ◽  
Major Parameter ◽  
Different Types

Different types of superabsorbent polymers (SAP) exhibiting varied absorbency properties were investigated for their performances at varying concentrations of an electrolyte. Water chemical potential, which is a function of concentration and pressure, was interpreted as a major parameter for absorbency and swelling properties of SAP. Superabsorbent polymers that were investigated gave different values of permeability which was carried out in a layer of swelled superabsorbent polymer. This result revealed differences on the structure of the superabsorbent polymers particularly on the crosslinking density. SAP’s absorbency properties were further tested and a correlation between the quantity of absorption and the chemical potential of water in terms of sodium chloride concentration was developed using experimental data on free swelling capacity and absorption under pressure. Results showed decreasing quantity of absorption by the superabsorbent polymers with decreasing chemical potential of water with higher reduction in the absorbency at higher pressure applied on the swelled SAP.

Validation of a new menstrual pictogram (superabsorbent polymer-c version) for use with ultraslim towels that contain superabsorbent polymers

2014 ◽  
Vol 101 (2) ◽  
pp. 515-522.e5 ◽  
Author(s):  
Julia L. Magnay ◽  
Tracy M. Nevatte ◽  
Shaughn O'Brien ◽  
Christoph Gerlinger ◽  
Christian Seitz
Keyword(s):  
Superabsorbent Polymer ◽  
Superabsorbent Polymers

Novel Superabsorbent Polymer-Based Lubricant Technology

2005 ◽  
Author(s):  
Richard Levy ◽  
Michael A. Nichols ◽  
William R. Opp
Keyword(s):  
Variable Viscosity ◽  
Lubricant Additives ◽  
Superabsorbent Polymer ◽  
Superabsorbent Polymers

Superabsorbent polymers and one or more solid and/or liquid lubricants, with and without lubricant additives, were formulated into a variety of solid and variable-viscosity lubricant compositions. A series of laboratory trials showed that superabsorbent polymer-based solid (e.g., agglomerated) lubricant compositions and variable-viscosity greases were more effective in reducing friction between moving surfaces than non-superabsorbent polymer-based lubricants.

scholarly journals Nonwovens Containing Immobilized Superabsorbent Polymer Particles

2003 ◽  
Vol os-12 (3) ◽  
pp. 1558925003os-12
Author(s):  
Darryl L. Whitmore
Keyword(s):  
In Situ Polymerization ◽  
Ph Control ◽  
Personal Hygiene ◽  
Superabsorbent Polymer ◽  
Polymer Particles ◽  
Superabsorbent Polymers ◽  
Acrylic Monomers

In the early 1980's Johnson & Johnson developed a revolutionary process for the production of webs containing superabsorbent polymers (SAP) produced by in-situ polymerization of partially neutralized acrylic monomers directly on a synthetic nonwoven substrate [1, 2, 3, 4]. A fresh look at this forgotten technology will be presented from both a manufacturing and application perspective. In particular, In-situ, SAP-containing nonwovens offer many unique properties for application in the personal hygiene industry, such as, improved fluid acquisition, permeability, compressibility and pH control. These materials also provide a more homogenous SAP distribution, eliminate the need for SAP powder handling and have superior wet integrity as compared to conventional fluff pulp/SAP air laid structures. This technology also offers some unique opportunities for designing and manufacturing profiled absorbent articles with specific zones tailored to perform specific functions.

Itaconic acid‐based superabsorbent polymer with high gel strength and biocompatibility

2022 ◽  
Author(s):  
Yong Rok Kwon ◽  
Hae Chan Kim ◽  
Jung Soo Kim ◽  
Young‐Wook Chang ◽  
Hansoo Park ◽  
...  
Keyword(s):  
Itaconic Acid ◽  
Gel Strength ◽  
Superabsorbent Polymer

scholarly journals Influence of superabsorbent polymers on the chemical composition of strawberry (Fragaria × ananassa Duch.) and biological activity in the soil

2015 ◽  
Vol 27 (1) ◽  
pp. 63-69 ◽  
Author(s):  
Grzegorz Mikiciuk ◽  
Małgorzata Mikiciuk ◽  
Małgorzata Hawrot-Paw
Keyword(s):  
Biological Activity ◽  
Soil Bacteria ◽  
Magnesium Content ◽  
Superabsorbent Polymer ◽  
Fragaria Ananassa ◽  
Analysis Method ◽  
Superabsorbent Polymers ◽  
Number Of Microorganisms ◽  
Calcium Magnesium

Abstract By improving the air and water properties of soils, superabsorbent polymers can affect the increase and improvement of the quality of the yield of berry plants, including strawberries. Their presence in the soil has an influence on its biological activity as related to microorganisms. The aim of the research was to assess the influence of superabsorbent polymers added to the soil on the content of macroelements and sodium in the leaves and fruit of strawberry of the ‘Elsanta’ cultivar and changes in the number of soil bacteria, actinomycetes and fungi. The superabsorbent polymer (AgroHydroGel) was used in two doses: 1.8 and 3.6 g dm-3 of soil. The content of phosphorus, potassium, calcium, magnesium and sodium was assessed using the ASA method, while the content of nitrogen and sulphur was assessed by the elemental analysis method (CHNS analyser). The number of microorganisms was assessed with a BacTrac analyser and the coefficient of microorganism development extent (SR) was also determined. AgroHydroGel increased the content of nitrogen and potassium in leaves and fruit but did not affect the content of phosphorus, sulphur and sodium. The addition of the superabsorbent at a dose of 3.6 g dm-3 of soil reduced the magnesium content both in the leaves and fruit of the strawberry. AgroHydroGel decreased the content of calcium in the fruit. The use of AgroHydroGel contributed to the expansion of the K ion ratio to other ions, both in the leaves and fruits. We observed a significant increase in the amount of soil bacteria (1.8 g dm-3 dose) and no significant influence on actinomycetes and fungi (irrespective of dose used).

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