Super-hydrophilic/oleophobic chitosan/acrylamide hydrogel: an efficient water/oil separation filter

Kordjazi, Sheyda; Kamyab, Kourosh; Hemmatinejad, Nahid

doi:10.1007/s42114-020-00150-8

Cited by 122 publications

(40 citation statements)

References 29 publications

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“…Effects associated with excess crosslinking produce a decrease in the elongation capacity of the polymeric chains, greater rigidity of the material and of the cavities that stock the absorbable liquid, producing in the hydrogel reduced or irregular liquid retention and swelling capacities. The said phenomenon of changes in the swelling capacity related to the increase in crosslinking agent was already reported in previous studies that described similar behaviors [17,[21][22][23].…”

Section: Statistical Studysupporting

confidence: 71%

Synthesis and characterization of Hydrogels based on Potato Starch/Poly(vinyl Alcohol)/N, N'-Methylenebisacrylamide

Pinzon-Moreno

Vicuña-Galindo

Gonzáles-Fernández

et al. 2021

Preprint

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Several hydrogels were synthesized by free-radical polymerization in an aqueous medium based on potato starch (PS), poly(vinyl alcohol) (PVA), and N,N'-Methylenebisacrylamide (MBAm), being possible to study these hydrogels as a function of the proportion of components incorporated. In this way, the products generated from the synthesis were characterized by swelling and deswelling kinetics, the first swelling being verified with Schott and statistical models, allowing to contrast the proximity between the experimental and theoretical behavior. Additionally, spectroscopy (FTIR), morphological (SEM), and thermal (TGA and DSC) analysis allowing to know the intrinsic characteristics of the material, increasing in general terms the knowledge of this type of material. In this context, it was possible to verify the characteristics and effectiveness of the synthesis and crosslinking of the main components. The experimental results obtained show that the synthesized hydrogels present representative first swellings consistent with kinetic and statistical models; however, there are significant changes in the second swelling derived from polymer degradation that occurs during the same swelling/deswelling cycles processes.

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Section: Statistical Studysupporting

confidence: 71%

Synthesis and characterization of Hydrogels based on Potato Starch/Poly(vinyl Alcohol)/N, N'-Methylenebisacrylamide

Pinzon-Moreno

Vicuña-Galindo

Gonzáles-Fernández

et al. 2021

Preprint

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“…At present, once the mobile phone screen is broken, users have to throw it away, which is bound to cause waste, and the application of self-healing materials on the screen will effectively solve this problem. It can be predicted that with the continuous progress of polymer materials design and preparation technology, self-healing materials [128][129][130][131] will also play a key role in the broader field.…”

Section: Discussionmentioning

confidence: 99%

Self-healing Materials: A Review of Recent Developments

Song¹,

Jiang²,

Li³

et al. 2021

ES Mater. Manuf.

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Self-healing polymer is a kind of functional polymer materials that can repair scratches, cracks and other mechanical damage, whose unique self-healing ability is of great significance for prolonging the life of materials. Eigen self-healing polymers have become the focus of current research due to their advantages of mild healing conditions and repeatable healing. In this paper, the preparation technology and properties of self-healing elastomers were reviewed, which provided guidance for the preparation of polymers with high repair efficiency and pointed out its future development trend. The self-healing polymer materials based on Diels-Alder reaction, metal bond, hydrogen bond, ionic bond, disulfide bond, etc., are mainly introduced, and their preparation process, healing mechanism and healing properties are reviewed. Although much progress has been made in self-healing elastomers based on different dynamic bonds, the development of materials with high repair efficiency remains a huge challenge. In this paper, various repair pathways of self-healing elastomers were reviewed, which provided guidance for the balance between repair and mechanical properties. The development of inherently self-healing polymers was also prospected.

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“…8,60 In addition, the swelling of poly(AA-co-NMA) layer bonded to modified cotton fabric formed a hydrogel-like membrane on the fabric surface which imparted a high repellency to oils. 44,61 Further investigation of the cycling performance of the neutralized and unneutralized modified cotton fabric showed that, both modified cotton fabric membranes maintained their high separation efficiency after 10 separation cycles. The flux of modified cotton fabric membranes with different oil/water systems across 10 cycles was determined according to Equation (4).…”

Section: Performance Of Modified Cotton Fabric Membrane In Oil/water Separationmentioning

confidence: 99%

Performance evaluation of modified fabricated cotton membrane for oil/water separation and heavy metal ions removal

Abdel‐Hakim

Abdella

Sabaa

et al. 2021

Vinyl Additive Technology

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Preparation of effective membrane with special surface treatment for oil/water separation having promising future and low manufacturing cost. The suggested membrane was fabricated by a simple treatment via increasing the hydrophilicity of the cotton fabric surface. The cotton fabric was impregnated in poly(acrylic acid-co-N-methylol acrylamide), poly(AA-co-NMA), where NMA acts as bonding agent. Sodium hypophosphite (SHP) was added to the modification solution to enhance the bonding between the cotton fabric and the PAA.The modified fabric was thermally dried and cured at different temperatures. It was found that, the presence of 3.5% NMA and addition of 5% SHP to the modification solution then curing at 190 C gave the highest amount of bonded PAA to the cotton fabric. The success of the modification process was confirmed by scanning electron microscope, Fourier transformer infrared and the increase in the contact angle of the cotton fabric after modification. Furthermore, the prepared membrane was evaluated for oil (n-hexane, toluene, and petroleum ether)/water separation and also for heavy metal ions removal (Cd 2+ and Co 2+ ).Neutralization of the produced membrane with ammonium hydroxide resulting in a higher contact angle and consequently higher separation efficiency for oil/water mixtures and higher performance for heavy metal ions removal compared to the unneutralized one.

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Super-hydrophilic/oleophobic chitosan/acrylamide hydrogel: an efficient water/oil separation filter

Cited by 122 publications

References 29 publications

Synthesis and characterization of Hydrogels based on Potato Starch/Poly(vinyl Alcohol)/N, N'-Methylenebisacrylamide

Synthesis and characterization of Hydrogels based on Potato Starch/Poly(vinyl Alcohol)/N, N'-Methylenebisacrylamide

Self-healing Materials: A Review of Recent Developments

Performance evaluation of modified fabricated cotton membrane for oil/water separation and heavy metal ions removal

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