Semi-interpenetrating Polymer Network Research Articles

Semi-interpenetrating network based on xanthan gum-cl-2-(N-morpholinoethyl methacrylate)/titanium oxide for the single and binary removal of cationic dyes from water

In the present study, semi-interpenetrating polymer networks (semi-IPNs) were synthesized based on xanthan gum (XG)-cl-2-(N-morpholinoethyl methacrylate) (MEMA)/titanium dioxide (TiO2) in the presence of N, N` methylene bisacrylamide (MBAAm), as the cross-linking agent. After that, the semi-IPN hydrogel was used to adsorb Methylene Blue (MB+) and Crystal Violet (CV+) from single and two-component adsorption systems. The optimal pH for efficient dye adsorption in aqueous solutions has been determined to be 8 for CV+ and 11 for MB+, respectively. The presence of polar oxygen-containing functional groups such as OH, CO, C-O-C, COOH, and others has been noticed to be the primary driving force in dye adsorption.Equilibrium data from a single process fitted very well to the Freundlich and Dubinin–Radushkevich models (R2 = 0.997 and 0.99) for MB+ and CV+, respectively. In a binary system, CV+ removed more than MB+, and both dyes demonstrated synergism during the adsorption of CV+/MB+ solutions. The dye removal efficiency of the adsorbent was found to be quite good even after the fourth adsorption-desorption cycle. In the treatment of multi-component contaminated water, XG-cl-poly (MEMA)/TiO2 might be a beneficial and reusable adsorbent.

Bioinspired highly anisotropic, robust and environmental resistant wood aerogel composite with semi-interpenetrating polymer networks for Cu(II) ion removal

Bioinspired highly anisotropic, robust and environmental resistant wood aerogel composite with semi-interpenetrating polymer networks for Cu(II) ion removal

Engineering alginate hydrogel films with poly(3-hydroxybutyrate-co-3-valerate) and graphene nanoplatelets: Enhancement of antiviral activity, cell adhesion and electroactive properties

A new biodegradable semi-interpenetrated polymer network (semi-IPN) of two US Food and Drug Administration approved materials, poly(3-hydroxybutyrate-co-3-valerate) (PHBV) and calcium alginate (CA) was engineered to provide an alternative strategy to enhance the poor adhesion properties of CA. The synthesis procedure allows the additional incorporation of 10 % w/w of graphene nanoplatelets (GNPs), which have no cytotoxic effect on human keratinocytes. This quantity of multilayer graphene provides superior antiviral activity to the novel semi-IPN against a surrogate virus of SARS-CoV-2. Adding GNPs hardly affects the water absorption or electrical conductivity of the pure components of CA and PHBV. However, the semi-IPN's electrical conductivity increases dramatically after adding GNP due to molecular rearrangements of the intertwined polymer chains that continuously distribute the GNP nanosheets, This new hydrophilic composite biomaterial film shows great promise for skin biomedical applications, especially those that require antiviral and/or biodegradable electroconductive materials.

Spiro-Twisted Benzoxazine Derivatives Bearing Nitrile Group for All-Solid-State Polymer Electrolytes in Lithium Batteries.

In this study, two nitrile-functionalized spiro-twisted benzoxazine monomers, namely 2,2′-((6,6,6′,6′-tetramethyl-6,6′,7,7′-tetrahydro-2H,2′H-8,8′-spirobi[indeno[5,6-e][1,3]oxazin]-3,3′(4H,4′H)-diyl)bis(4,1-phenylene))diacetonitrile (TSBZBC) and 4,4′-(6,6,6′,6′-tetramethyl-6,6′,7,7′-tetrahydro-2H,2′H-8,8′-spirobi[indeno[5,6-e][1,3]oxazin]-3,3′(4H,4′H)-diyl)dibenzonitrile (TSBZBN) were successfully developed as cross-linkable precursors. In addition, the incorporation of the nitrile group by covalent bonding onto the crosslinked spiro-twisted molecular chains improve the miscibility of SPE membranes with lithium salts while maintaining good mechanical properties. Owing to the presence of a high fractional free volume of spiro-twisted matrix, the –CN groups would have more space for rotation and vibration to assist lithium migration, especially for the benzyl cyanide-containing SPE. When combined with poly (ethylene oxide) (PEO) electrolytes, a new type of CN-containing semi-interpenetrating polymer networks for solid polymer electrolytes (SPEs) were prepared. The PEO-TSBZBC and PEO-TSBZBN composite SPEs (with 20 wt% crosslinked structure in the polymer) are denoted as the BC20 and BN20, respectively. The BC20 sample exhibited an ionic conductivity (σ) of 3.23 × 10−4 S cm−1 at 80 °C and a Li+ ion transference number of 0.187. The LiFePO4 (LFP)|BC20|Li sample exhibited a satisfactory charge–discharge capacity of 163.6 mAh g−1 at 0.1 C (with approximately 100% coulombic efficiency). Furthermore, the Li|BC20|Li cell was more stable during the Li plating/stripping process than the Li|BN20|Li and Li|PEO|Li samples. The Li|BC20|Li symmetric cell could be cycled continuously for more than 2700 h without short-circuiting. In addition, the specific capacity of the LFP|BC20|Li cell retained 87% of the original value after 50 cycles.

Development of a novel pullulan/polydopamine composite hydrogel adsorbent for dye removal

Polysaccharides with good renewability, excellent biocompatibility and desirable degradation rate are widely applied in the field of wastewater treatment. Herein, we have synthesized a series of novel semi-interpenetrating polymer network (semi-IPN) polysaccharide hydrogels that are comprised of pullulan, polydopamine (PDA) and 1–6-Hexanediol diglycidyl ether (HDE as a cross-linker) via the chemical cross-linking method. The physical and chemical properties of the semi-IPN hydrogels were investigated through Fourier transform infrared spectra (FTIR), X-ray diffraction (XRD), rheological measurement, thermal gravimetric analysis (TGA) and Scanning electron microscope (SEM) images. Furthermore, TGA and SEM suggest that the thermostability and morphologies of gels were obviously affected by the PDA concentration of solution. In brief, the increase of PDA concentration resulted in better thermostability and bigger pore sizes, and the introduction of PDA led to the improvement of swelling performance. Furthermore, the obtained semi-IPN hydrogels exhibited desirable adsorption capacity (107 mg/g) toward Crystal violet. After four cycles of adsorption experiments, the adsorption capacities still maintained 100 mg/g. The Langmuir and pseudo-second-order models were used to explain the adsorption process of hydrogels. Owing to the advantages of cheaper raw materials, non-toxic and harmless and simple preparation process, the obtained pullulan/PDA semi-IPN hydrogel is expected to be the promising candidate for rapid dye removal.

Engineering a semi-interpenetrating constructed xylan-based hydrogel with superior compressive strength, resilience, and creep recovery abilities

Recent advances in the area of hydrogel synthesis have been directed to enhance the mechanical properties and biocompatibility, which are critical in their use as functional biomaterials. In this work, a green and facile method is introduced to produce a hydrogel based on xylan, a plant-based heteropolysaccharide, that is shown to successfully form hydrogen-bonded, semi-interpenetrating polymer networks with polyvinyl alcohol. Upon crosslinking with sodium trimetaphosphate, the obtained hydrogels achieved an exceptional compressive strength (up to 84.2 MPa at a fracture strain of 90 %), which surpasses any polysaccharide-based hydrogels reported so far. The hydrogels were further shown to have high degradation temperature (350–370 °C), to be mechanically resilient with a form and creep recovery of 95 % (78 % stress after 1000 cycles under 30 % strain) and 98 % in height, respectively. All materials used in the preparation of the hydrogels were non-toxic and biocompatible, which makes the synthesized hydrogels suitable potential candidates for soft-tissue engineering and biomedical applications.

From dual-aerogels with semi-interpenetrating polymer network structure to hierarchical porous carbons for advanced supercapacitor electrodes

Herein, dual-aerogels of resorcinol-formaldehyde and polyvinyl alcohol (RF/PVA) with semi-interpenetrating polymer network (semi-IPN) structure are prepared and applied as precursors for preparing the hierarchical porous carbons. PVA serves as the critical skeletal template for macropores and supports the three-dimensional architecture, while KOH impels the increment of micropores and the formation of mesopores, both enlarging the specific surface area. More intriguing, the pore structure and surface area can be tailored by controlling the mass ratio of resorcinol to PVA, thus optimizing the electrochemical performance. As-obtained DAGC-1 with a large specific surface area of 2076 m2 g−1 and three-dimensional hierarchical porous structure exhibits a superior specific capacitance of 320 F g−1 at 1 A g−1 in three-electrode system. Meanwhile, DAGC-1 assembled symmetrical supercapacitor delivers an elevated energy output of 59.8 Wh kg−1 at 350 W kg−1 in EMIMBF4 electrolyte with a wide potential range of 3.5 V. Our work provides a novel synthesis approach deriving hierarchical porous carbons from dual-aerogels with semi-IPN structure, serving as a new highlight for efficient energy storage.

Nanostructured Polyacrylamide Hydrogels with Improved Mechanical Properties and Antimicrobial Behavior.

This work proposes a simple method to obtain nanostructured hydrogels with improved mechanical characteristics and relevant antibacterial behavior for applications in articular cartilage regeneration and repair. Low amounts of silver-decorated carbon-nanotubes (Ag@CNTs) were used as reinforcing agents of the semi-interpenetrating polymer network, consisting of linear polyacrylamide (PAAm) embedded in a PAAm-methylene-bis-acrylamide (MBA) hydrogel. The rational design of the materials considered a specific purpose for each employed species: (1) the classical PAAm-MBA network provides the backbone of the materials; (2) the linear PAAm (i) aids the dispersion of the nanospecies, ensuring the systems’ homogeneity and (ii) enhances the mechanical properties of the materials with regard to resilience at repeated compressions and ultimate compression stress, as shown by the specific mechanical tests; and (3) the Ag@CNTs (i) reinforce the materials, making them more robust, and (ii) imprint antimicrobial characteristics on the obtained scaffolds. The tests also showed that the obtained materials are stable, exhibiting little degradation after 4 weeks of incubation in phosphate-buffered saline. Furthermore, as revealed by micro-computed tomography, the morphometric features of the scaffolds are adequate for applications in the field of articular tissue regeneration and repair.

Growth and Regeneration of Osteochondral Cells in Bioactive Niche: A Promising Approach for Osteochondral Tissue Repair.

Functional repair of osteochondral defects caused due to osteoarthritis still remains the greatest challenge in orthopedic therapy. A prospective clinical strategy would be exploring osteochondral tissue engineering possibilities that promote simultaneous regeneration of the articular cartilage layer as well as the underlying subchondral bone. Incorporating the appropriate cues onto the scaffolds for the regeneration of the two contrasting tissues is therefore a demanding function. In the present study, a polymer-ceramic composite scaffolding material consisting of ternary bioactive glass (67.12 SiO2/28.5 CaO/4.38 P2O5 mol %) incorporated into a semi interpenetrating polymer network of hydrophilic-hydrophobic polymer (poly(vinyl alcohol)-polycaprolactone) matrix is prepared and physicochemically characterized. In vitro bioactivity, bone-bonding ability, and biocompatibility evaluation were performed in comparison with the pristine scaffold. The degree of chondrogenic and osteogenic potential of mesenchymal stem cells in both the scaffolds was evaluated by gene expression studies. Although both the scaffolds favored the differentiation to both cell lineages in their respective medium, a higher expression of bone specific genes found with the composite scaffold suggested that this composite scaffold would serve better for osteal layer and henceforth to promote the integration of the osteochondral construct at the defect site.

Advanced CNC/PEG/PDMAA Semi-IPN Hydrogel for Drug Delivery Management in Wound Healing.

A Semi Interpenetrating Polymer Network (semi-IPN) hydrogel was prepared and loaded with an antibiotic drug, gentamicin, to investigate the wound healing activity of this system. The semi-IPN hydrogel was synthesized by combining natural polymer cellulose nanocrystal (CNC) and synthetic polymer polyethylene glycol (PEG) and poly (N,N′-dimethyl acrylamide) (PDMAA), which was initially added as a monomer dimethyl acrylamide (DMAA). CNC was prepared from locally obtained jute fibers, dispersed in a PEG-NaOH solvent system and then mixed with monomer DMAA, where polymerization was initiated by an initiator potassium persulphate (KPS) and cross-linked by N,N′-methylenebisacrylamide (NMBA). The size, morphology, biocompatibility, antimicrobial activity, thermal and swelling properties of the hydrogel were investigated by different characterization techniques. The biocompatibility of the hydrogel was confirmed by cytotoxicity analysis, which showed >95% survival of the BHK-21, Vero cell line. The drug loaded hydrogel showed antimicrobial property by forming 25 and 23 mm zone of inhibition against Staphylococcus aureus (gram-positive) and Escherichia coli (gram-negative) bacteria, respectively, in antimicrobial analysis. At pH 5.5, 76% of the drug was released from the hydrogel within 72 h, as observed in an in vitro drug release profile. In an in vivo test, the healing efficiency of the drug loaded hydrogel was examined on a mice model with dorsal wounds. Complete healing of the wound without any scar formation was achieved in 12 days, which revealed excellent wound healing properties of the prepared drug loaded semi-IPN hydrogel. These results showed the relevance of such a system in the rapid healing of acute wounds.

Semi-IPN Alg/PAO microspheres for the efficient removal of U(VI) from alkaline solution by experimental and DFT study

Highly efficient recovery of uranium from seawater is essential for the enormous global demand of nuclear fuel in the future. In this study a new Semi-Interpenetrating Polymer Network Alg/PAO (Semi-IPN Alg/PAO) hydrogel microspheres adsorbent (Abbreviated as Alg/PAO) was prepared by self-assembly method. This material has high uranium adsorption capacity (186.6 mg/g at room temperature), high adsorption selectivity, easy to manufacture on large-scale, facile to handle and collect in practical situations, which are essential for practical applications in the recovery of U(VI) from seawater. The effects of solid-liquid ratio, ionic strength, contact time, pH, initial concentration and temperature on the adsorption of uranium by Alg/PAO hydrogel microspheres were investigated by batch experiments. The U(VI) adsorption on Alg/PAO hydrogel microspheres fitted well to the pseudo second-order kinetic model and Langmuir model. FTIR and XPS and DFT (Density Functional Theory) simulations indicate that the uranyl ion mainly form chelates with amidoxime groups and carboxyl groups on sodium alginate with uranium.

Strength and salt/pH dependent-sorption capacity modulation of N-(alkyl)acrylamide-based semi-IPN hybrid gels reinforced with silica nanoparticles

A simple methodology was described for design of anionically modified thermosensitive organic-inorganic hybrid gels using silica nanoparticle-mediated semi-interpenetrating polymer networks. A thermosensitive copolymer poly(N-isopropylacrylamide-co-methacrylic acid), P(NIPA-MA), with linear polyacrylamide (LPA) chains was synthesized by conducting free radical polymerization under warm and cold conditions using NIPA and MA in the presence of SiO2 nanoparticles. Simple mixing of aqueous monomer solution with linear LPA chains and silica suspensions led to the formation of ionic thermosensitive hybrid gels. The effect of changes in solution environment on the swelling and elastic properties was investigated. Sodium salts of CH3COO−, NO3−, and SCN− were employed to understand specific ion effects and to gain an insight into the influence of kosmotrope and chaotrope solutes on swelling and elasticity at various ionic strength and temperature. The identity of counterion had a strong influence on swelling and compression modulus and was found to follow the reverse order of classical Hofmeister series (HS). The phase transition temperature decreased with increasing salt concentration, and transition changed from discontiuous to continuous. At low salt concentrations, the gels showed discontinuous phase transition at 50 °C, while transition temperature shifts towards 35–45 °C with increasing salt concentration. Dilution of the solution to 10−3 M resulted in a 2.0-fold reduction in compressive modulus of hybrid gels in NaAc solutions while a 3.0-fold reduction in NaSCN solutions. Compression modulus increased with shrinkage of hybrids due to increasing salt concentration. The effect of pH change of swelling medium on the swelling, phase transition profile and elasticity was evaluated. The continuity of pH-dependent swelling curve depended on swelling temperature. pH-triggered oscillation kinetics have been investigated to understand whether they can be used as a pH oscillator since the phase transition pH is close to 5.7. The swelling of NP-loaded hybrids followed a Fickian type diffusion. NP-loaded semi-IPN hybrid gels with typical feature of anionic structure were applied for adsorption of cationic dye methyl violet (MV). Different adsorption isotherm models were investigated to describe interfacial adsorption of MV which was strongly dependent on composition of hybrids. Langmuir isotherm model was found to be most appropriate to describe adsorption process. The superior properties imparted to the present system prepared with anionic modification, semi-IPN structure and NP-loading make semi-IPN hybrid gels suitable candidates for controlled release systems and for adsorbents of cationic dyes.

Towards high performance semi-interpenetrating phase change materials networks via linear polyethylene glycol-based multimerization effect

Semi-interpenetrating polymer network (semi-IPN)-based phase change materials (PCMs) with linear polyethylene glycol (PEG)-based multimer intends to enhance the encapsulation fraction, shape stability and mechanical strength in a synergetic way relative to semi-IPN-based PCMs with linear PEG monomer. Herein, semi-IPN-based PCMs comprised of PEG-based multimers and covalent crosslinking polyester network were successfully synthesized via efficient esterification reaction between eco-friendly citric acid and multiple aziridine ring-containing species. The linear PEG-based multimers with various PEG unit number were formed by the reaction between polyethylene glycol and toluene diisocyanate in various molar ratio. With increasing PEG unit number of linear PEG-based multimers from 1 to 6, the PEG weight fraction of PCMs increases by 48.91% (from 60 wt% to 89.35 wt%) and the storage modulus (G′) of PCMs rises (from G′ = 12390 Pa for PCM-2–0.6 at 1 Hz at 90 °C while to G′ = 12780 Pa for PCM-6–0.6 at 1 Hz at 125 °C) when PEG weight fraction is nearly 60 wt%. The maximum latent heat reaches up to 141.0 J/g with the maximum PEG weight fraction of 89.35% in PCMs with linear PEG-based multimers encapsulated. The PCMs feature shape-stable form even at 140 °C, efficient photothermal effect by introducing carbon black and degradation ability resulting from hydrolysis effect of ester structure. The enhanced comprehensive performance of semi-IPN-based PCMs is due to the introduction of linear PEG-based multimers instead of pristine PEGs, which is denoted as multimerization effect, and the semi-IPN-based PCMs with multimerization effect will broaden the application of PCMs.

Hydrogels for Biomedicine Based on Semi-Interpenetrating Polymeric Networks of Collagen/Guar Gum: Applications in Biomedical Field and Biocompatibility

Hydrogels for Biomedicine Based on Semi-Interpenetrating Polymeric Networks of Collagen/Guar Gum: Applications in Biomedical Field and Biocompatibility

Hydrogels for Biomedicine Based on Semi-Interpenetrating Polymeric Networks of Collagen/Guar Gum: Synthesis and Physicochemical Characterization

Hydrogels for Biomedicine Based on Semi-Interpenetrating Polymeric Networks of Collagen/Guar Gum: Synthesis and Physicochemical Characterization

Eco-friendly poly(vinyl alcohol)/partially hydrolyzed polyacrylamide/graphene oxide semi-IPN nanocomposite hydrogel as a reusable and efficient adsorbent of cationic dye methylene blue from water

Eco-friendly semi-interpenetrating polymer network (IPN) nanocomposite hydrogels composed of poly(vinyl alcohol) (PVA) chains and graphene oxide (GO) nanosheets embedded within the cross-linked partially hydrolyzed polyacrylamide (PHPAm) network were prepared in a one-stage approach via the internal ionic gelation in an aqueous solution. After full characterizations by various techniques, optimization of the hydrogel synthesis reaction condition based on the equilibrium swelling ratio criterion was performed by using Taguchi standard method. The performance of the prepared PVA/PHPAm/GO semi-IPN nanocomposite hydrogel as methylene blue (MB) adsorbent was evaluated by treating aqueous solutions in batch mode and kinetic models and isothermal models were used to describe the adsorption mechanism. The experimental results indicated that the incorporation of GO in the semi-IPN nanocomposite formulation enhanced the thermal stability, swelling ability and (MB) removal efficiency by 49% compared to empty hydrogels. Adsorption kinetics and equilibrium adsorption isotherm fitted the pseudo-second-order kinetic model and Langmuir isotherm model well, respectively. Moreover, the prepared semi-IPN hydrogel had good stability and reusability as it exhibited excellent removal efficiency of 70% after five consecutive adsorption-desorption cycles. The maximum adsorption capacity calculated from the Langmuir isotherm model reached qmax = 714.8 mg.g−1 at 30°C, obviously higher than the hydrogel prepared without this addition (293.8 mg.g−1). According to the calculated thermodynamic parameters ΔG°, ΔH°, and ΔS°, MB adsorption onto the adsorbent was a spontaneous, endothermic, and physical adsorption process.

One step preparation of multifunctional poly (ether sulfone) thin films with potential for wound dressing.

The increasing demand for higher-quality medical care has resulted in the obsolescence of traditional biomaterials. Medical care is currently transitioning from an era depending on single-functional biomaterials to one that is supported by multifunctional and stable biomaterials. Herein, long-lasting multifunctional poly(ether sulfone) thin films (MPFs) containing heparin-mimic groups and a quaternary ammonium compound (QAC) were prepared via semi-interpenetrating polymer network (SIPN) strategy. The MPFs, with rough surface and inner finger-like macrovoid, had better hydrophilicity and anti-protein fouling ability, as revealed by scanning electron microscopy (SEM), atomic force microscope (AFM) and water contact angle (WCA) and protein adsorption tests. The results of platelet adhesion and activation, and clotting time confirmed that the hemocompatibility of the MPFs was significantly improved. From cell culture and germ-culture test, it was noted that the overall trend of human umbilical vein endothelial cell (HUVEC) proliferation was enhanced by a combination of heparin-mimic groups and QAC, whereas the growth of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) was significantly prohibited. In addition, the MPFs were capable of modulating the expression level of basic fibroblast growth factor (bFGF) and transforming growth factor-beta1 (TGF-β1) in fibroblast, which was beneficial to controlling the formation of hypertrophic scar. In summary, the MPFs had potential to be used in the field of wound management and the study might help guide the design of surface structure of wound dressing.

Synthesis and analysis of lactose polyurethanes and their semi-interpenetrating polymer networks

In view of growing public awareness of environmental pollution, plastic waste, and microplastics, agro-based materials are increasingly used to replace raw materials derived from fossil feedstocks in order to take advantage of their sustainability, eco-friendliness, better recyclability, and lack of toxicity. One of our focal areas is lactose, which is the natural disaccharide found in milk; it is inexpensive and widely available. In this work, we synthesized polyurethanes from lactose and toluene-2,4-diisocyanate (TDI), using both conventional heat and microwave. Microwave was found to reduce the reaction time and save energy relative to conventional heat. Moreover, semi-interpenetrating polymer networks were made with a second polymer {e.g., poly(vinyl pyrrolidone) and poly(lactic acid)} in order to impart additional properties to the lactose-based polyurethanes. The resulting polymers were characterized with appropriate analyses.

Application of 2D nanomaterial MXene in anion exchange membranes for alkaline fuel cells: Improving ionic conductivity and power density

Two types of new 2D MXenes (LiF–Ti3C2Tx and NH4HF2–Ti3C2Tx) were prepared by selective etching of Ti3AlC2 with LiF/HCl and NH4HF2 aqueous solutions, respectively, and they were introduced as nanofillers into quaternized polysulfone/polyquaternium-10 (QPSU/PQ-10) anion exchange membranes (AEMs) with semi-interpenetrating polymer network, thereby preparing two types of MXene-doped QPSU/PQ-10 AEMs. The resulting MXene-doped QPSU/PQ-10 AEMs have obvious nanoscale microphase-separated morphologies, and their ionic conductivity and power density are significantly improved compared with the pristine QPSU/PQ-10 AEM. Among them, the ionic conductivity and power density of NH4HF2–Ti3C2Tx MXene-doped AEM can reach 88.76 mS/cm at 80 °C and 106.28 mW/cm2 at 60 °C, respectively, which are 26.3% and 37.5% higher than those of the pristine QPSU/PQ-10 AEM. Additionally, the MXene-doped QPSU/PQ-10 AEMs with semi-interpenetrating network have moderate water uptake and swelling ratio, excellent thermal and mechanical properties, as well as good oxidation resistance and alkaline stability, which can meet the application requirements of AEMs for fuel cells, exhibiting their bright application prospects in fuel cells.

Chitosan- and Alginate-Based Hydrogels for the Adsorption of Anionic and Cationic Dyes from Water.

Novel hydrogel systems based on polyacrylamide/chitosan (PAAM/chitosan) or polyacrylic acid/alginate (PAA/alginate) were prepared, characterized, and applied to reduce the concentrations of dyes in water. These hydrogels were synthetized via a semi-interpenetrating polymer network (semi-IPN) and then characterized by Fourier transformed infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA), and their swelling capacities in water were measured. In the adsorption experiments, methylene blue (MB) was used as a cationic dye, and methyl orange (MO) was used as an anionic dye. The study was carried out using a successive batch method for the dye absorption process and an equilibrium system to investigate the adsorption of MO on PAAM/chitosan hydrogels and MB on PAA/alginate in separate experiments. The results showed that the target hydrogels were synthetized with high yield (more than 90%). The chemical structure of the hydrogels was corroborated by FTIR, and their high thermal stability was verified by TGA. The absorption of the MO dye was higher at pH 3.0 using PAAM/chitosan, and it had the ability to remove 43% of MO within 10 min using 0.05 g of hydrogel. The presence of interfering salts resulted in a 20–60% decrease in the absorption of MO. On the other hand, the absorption of the MB dye was higher at pH 8.5 using PAA/alginate, and it had the ability to remove 96% of MB within 10 min using 0.05 g of hydrogel, and its removal capacity was stable for interfering salts.