Degree Of Crosslinking Research Articles

Modification of phases evolution and heavy metal immobilization in alkali-activated MSWI FA by the incorporation of converter steel slag

Municipal solid waste incineration fly ash (MSWI FA) poses serious environmental concerns due to its high content of hazardous organics, heavy metals, and soluble salts. This study aimed to solidify the harmful components in MSWI FA by alkali activation and explore the influence of converter steel slag on the phase evolution. With the increase of curing time, the amount of C-(A)-S-H gel increased and its microstructure shifted to a high crystalline and crosslinked state, accompanied by the increase of Ca/Si ratio. The addition of steel slag was beneficial to the formation of C-(A)-S-H gel and enhanced its crystallinity and crosslinking degree. Compared with alkali-activated MSWI FA, NaCl and KCl content decreased more significantly with curing time and Friedel ’salts were found in the matrix modified by steel slag. The leaching toxicity of heavy metals in alkali-activated matrix was reduced as curing time increased. The increase of C-(A)-S-H gel content and changes of its microstructure were conducive to the stabilization of heavy metals and chlorides. The refinement of pore size and improvement of compressive strength contributed to the physical encapsulation of heavy metals and chlorides.

Synthesis and Characterization of Photo-Cross-Linkable Silk Fibroin Methacryloyl Hydrogel for Biomedical Applications.

Photo-cross-linkable hydrogels have recently gained increased interest in the field of biomedical applications. In this study, silk fibroin was derivatized with methacrylic anhydride (MA) to obtain silk fibroin methacryloyl (SFMA), forming hydrogel under UV light exposure in 1 min. The SFMA sol-gel transition did not involve significant structural change at the early stage. Then, the formation of the irreversible β-sheet was confirmed after 24 h. The resulting SFMA hydrogel showed a homogeneous porous structure with pore sizes ranging from 400 to 700 μm, depending on the content. In addition, these hydrogels demonstrated a lower swelling capacity, higher rheological properties and compressive modulus, and slow degradation behavior at higher content, likely due to the higher degree of cross-linking. An experiment with cells indicated the good cell compatibility of these hydrogels, as revealed by Cell Counting Kit-8 (CCK-8) assays. As a tissue-engineered material, this photo-cross-linkable SFMA is expected to have a wide range of applications in the biomedical field.

Modification of photosensitive resin with fumed silica

The effect of fumed silica (3 and 5 wt%) on the structure, viscosity, tensile and flexural properties, and hardness of photosensitive acrylic resins used for 3D printing was investigated. The optimal set of functional properties was obtained with a silica content of 3 wt%. In this case, the resin had the appropriate viscosity, degree of cross-linking, hardness (90 ShD), tensile strength (47 MPa) and flexural strength (96 MPa). The obtained results indicate that the addition of silica effectively reinforce the resin.

Dynamic hydrogel with environment-adaptive autonomous wound-compressing ability enables rapid hemostasis and inflammation amelioration for hemorrhagic wound healing

Severe trauma wound management remains a crucial challenge in the clinics owing to the uncontrollable bleeding and acute inflammatory responses. To achieve rapid hemostasis and reduce local inflammation of large hemorrhagic wounds, we proposed a composite hydrogel dressing through the free radical polymerization of methacrylate gelatin (GelMA), bisphosphonic acid (BP) and cyclodextrin (CD)-modified hyaluronic acid (HA) and loaded with anti-inflammatory drug resveratrol (RES) through supramolecular inclusion. After implantation into bleeding wounds, the hydrogel could electrostatically enrich blood cells and platelets around the wound area to accelerate thrombosis and also increase its own weight to compress local blood vessels for reducing blood loss. Moreover, the cross-linking degree of the HG-CB-based hydrogels could be enhanced in a self-evolving manner through coordination between BP and blood-derived iron ions, leading to increasing biomechanical performance to avoid hydrogel rupture and secondary bleeding. In addition, the hydrogel continuously released RES to increase secretion of anti-inflammation factors, which may stimulate fibroblast migration and accelerate collagen deposition at the wound site. Overall, the HG-CB-based composite hydrogels exhibited excellent rapid hemostatic properties for treating large bleeding wounds and accelerated wound repair via RES-mediated inflammation amelioration, which may provide an approach for managing severe traumatic wounds in the clinics.

Eu(III) transfer in single N,N,N',N'-tetraoctyldiglycolamide-impregnated polymer-coated silica particle using fluorescence microspectroscopy: transfer mechanism and effect of polymer crosslinking degree.

A microcapillary manipulation system combined with fluorescence microspectroscopy enabled us to analyze mass transfer in a single particle. In this study, we revealed the Eu(III) distribution in a single diglycolamide-derivative extractant (TODGA)-impregnated polymer-coated silica particle. The reaction of Eu(III) with two TODGA molecules in the polymer layer was the rate-limiting process, which was revealed by the relationship between the rate constants (k1 and k-1) and concentrations of Eu(III) and HNO3. The decrease in the crosslinking degree of the polymer layer caused an increase in only k-1. This indicates that hydrophilic environments at lower crosslinking degrees enhance the stability of the charged Eu(III) species such as Eu3+, Eu(NO3)2+, and Eu(NO3)2+.

Efficacy of co-loading Ag nanoparticles and metronidazole in PEG–gelatin-based sponges for the treatment of chronic wounds

Polymer-based sponges loaded with antibacterial agents are potential wound dressings ideal for treating bacteria-infected wounds. Gelatin/poly (ethylene glycol) (PEG) sponge-based wound dressings loaded with metronidazole and Ag nanoparticles with different degrees of cross-linking were prepared, and their capability to treat infected wounds in vitro was evaluated. The degree of cross-linking of the sponges varied, and the porosity of the sponges was in the range of 15.64–91.10%. The amount of gelatin used to prepare the sponges influenced the porosity of the sponges. The sponges displayed an initial burst drug release of metronidazole followed by a sustained release profile. The sponges exhibited considerable antibacterial activity against Gram-positive and Gram-negative bacteria. The % cell viability of the sponges was in the range of 71.17–86.10%, indicating distinguished biocompatibility. The in vitro experiment showed that the sponge loaded with metronidazole, SAM2%, displayed a significant reduction of 66.68% in the scratch area compared to the sponge loaded with a combination of silver nanoparticles and metronidazole with a closure rate of 46.61% at 96 h. The promising features of the sponges indicate that they are potential wound dressings for treating infected wounds.

Incorporating of β-cyclodextrin based nanosheet for advanced thin-film nanocomposite nanofiltration membrane with improved separation and anti-fouling performances

Nanotechnology has created numerous opportunities for the development of novel thin film nanocomposite (TFN) membranes. In this study, we prepared a novel β-cyclodextrin based nanosheets (β-CDNSs) with a lateral size of approximately 200–400 nm and thickness of ∼10 nm through the interfacial polymerization method and used it as the nanofillers in aqueous phase to prepare advanced nanofiltration (NF) membranes. The high microporosity, organic attribute, hydrophilic COOH and reactive OH groups present in β-CDNSs are conducive to the microstructural parameters fine-tuning of the resultant TFN membranes. The optimal membrane TFN-0.02 presented the PA selective layer with thinner thickness, less crosslinking degrees, prominent globule microstructures, and increased hydrophilic properties. As a result, it achieved a remarkable enhancement in pure water permeability (21.46 L m−2 h−1 bar− 1, versus 8.79 L m− 2 h− 1 bar− 1, nearly 2.4-fold increase), high rejection of divalent salt (above 98% for Na2SO4) and an outstanding selectivity of αNaCl/Na2SO4 = 50.27. Moreover, the tailored membrane TFN-0.02 exhibited superior resistance towards four typical organic foulants BSA, LYZ, DTAB and SDS. Overall, this work provides insightful guidance for the design of novel organic nanomaterials with desired properties for greatly enhanced separation performances of as-fabricated membranes.

Effects of thermal process conditions on crystallinity and mechanical properties in material extrusion additive manufacturing of discontinuous carbon fibre reinforced polyphenylene sulphide composites

This study investigates the thermal behaviour of discontinuous carbon fibre reinforced polyphenylene sulphide (CF/PPS), additively manufactured by material extrusion, with a focus on the effects of thermal process conditions on the degree of crystallinity, oxidation crosslinking and mechanical properties of CF/PPS from filament fabrication, material extrusion to annealing treatment. The screw extrusion parameters are optimised by performing a thermal analysis of the fabricated filaments. The effect of crosslinking reactions on the crystallinity process in determining the mechanical properties of the printed samples is illustrated by investigating the influence of the printing conditions. Furthermore, the effect of annealing treatment on the semi-crystalline polyphenylene sulphide (PPS) is studied by measuring the degree of crystallinity and viscoelasticity behaviours. Results demonstrate that the flexural properties of the printed CF/PPS composites at elevated processing temperatures are determined by the oxidation crosslinking between PPS chains. These enhance the crystallisation process of semi-crystalline polymers by acting as the nucleating agent first but negatively affect the mechanical properties at higher temperatures because of the detrimental effects of the polymer inter-chain bonding. The maximum flexural strength of printed CF/PPS reached 164.65 MPa when processing at an extrusion temperature of 280°C, a printing temperature of 320°C, and an annealing temperature of 130°C for 6 h. By adjusting the thermal treatment conditions, the degree of the crystallinity and the mechanical properties of the printed CF/PPS composites can be designed, controlled and tailored.

Molecular dynamics simulation on the shielding effect of aminopropyl trimethoxysilane film on corrosive media

Aminopropyl trimethoxysilane (APTMS) was used as a silane reagent, and oxygen and water were set as corrosion media, respectively. The mean square displacement (MSD) of oxygen and water molecules in silanized films with different cross-linking degrees (APTMS-OH-1, APTMS-OH-4, APTMS-OH-8, and APTMS-OH-12) were investigated by molecular dynamics simulation to characterize the corrosion inhibition effect of silanized films in different corrosion media. The results showed that compared with in air, the MSD of oxygen and water molecules in silane film was significantly reduced, which indicated that silane film could prevent the diffusion of corrosive medium, thus protecting material. Silane films with various crosslinking degrees have different shielding effects on oxygen and water molecules. The MSD of oxygen in silane films with different crosslinking degrees was: APTMS-OH-1>APTMS-OH-4>APTMS-OH-12>APTMS-OH-8, while the MSD of water in silane films with different crosslinking degrees was: APTMS-OH-1>APTMS-OH-4≈APTMS-OH-12>APTMS-OH-8. The MSD of both oxygen and water molecules was the lowest in silane films with a crosslinking degree of 8, which showed that silane films had the highest shielding effect.

High-performance photoinitiating systems for new generation dental fillings.

To obtain new generation dental composites with improved performance properties compared to currently available dental fillings on the market and to determine the influence of new initiating systems on final product parameters such as degree of cure, hardness, color, and shrinkage. In order to verify the effectiveness of the developed initiating systems, typical spectroscopic, electrochemical, and kinetic studies using the real-time FT-IR method were shown. Moreover, paste dental fillings were prepared, the compositions were irradiated with the dental lamp, and the degrees of cross-linking were measured by Raman spectroscopy. The polymerization shrinkage was also determined using the rheometer. In addition, their hardness was examined on the Shore scale. Finally, the color analysis of the composites in the L*a*b*color space was compared with the VITA CLASSIC colorant. It was shown that, due to their excellent spectroscopic and electrochemical properties, new quinazolin-2-one can act as co-initiators in cationic and radical photopolymerization. It was demonstrated that the most effective composite containing the initiator system in the form of 3-SCH3Ph-Q, IOD, MDEA, and an inorganic filler as nanometric silica and a bonding agent is cured more than 90% after just 1 cycle of dental lamp exposure (30s), the hardness of the composite after curing on the Shor Scale is 82±4, and the polymerization shrinkage is less than 2.8%. The article demonstrates effective new initiator systems as an alternative to CQ/amine for obtaining new-generation dental composites. The developed dental composites are a big competition to the currently used dental fillings on the market.

Bonding behavior of urea-formaldehyde adhesive with wood tangential section under a high-voltage electric field

Wood composites often exhibit weak interaction between urea-formaldehyde (UF) and wood, leading to edge warping and cracks at the bonding interphase. To address this issue, the high-voltage electric field (HVEF) has been effectively employed to enhance the bonding strength of wood composites. This study aims to further investigate the bonding process and the mechanism of bonding enhancement under HVEF treatment by examining the physicochemical characteristics, curing reaction of UF adhesive, and dynamic wetting behavior on the wood tangential section. The chemical reaction and bonding strength at the bonding interphase were also examined. The results revealed that the HVEF treatment increased the polarization extent of the adhesive molecules, resulting in variations in the physical properties of the adhesive. Particularly, a higher enthalpy during the adhesive curing reaction was observed, with an 85% increment observed under the N–P(−) condition. The FTIR spectra showed an increased peak intensity of UF main chemical bonds and a higher extent of chemical interaction between wood and UF functional bonds under HVEF treatment. These findings can be attributed to higher degrees of molecule activation and cross-linking between wood and UF. Furthermore, the HVEF treatment led to a decreased absorption ratio of UF and an increased wet/dry wood bonding strength of the two-layer composite. The absorption ratio of UF exhibited the highest decrement of 36%, while the wet/dry wood bonding strength showed the highest increment of 85%/100% under the N–P(−) condition. This study emphasizes the significant role of higher extents of UF polarization, activation, and cross-linking with wood in enhancing the bonding strength of HVEF-treated wood composites.

Synergistic Modulation of a Tunable Microenvironment to Fabricate a Liver Fibrosis Chip for Drug Testing.

Liver fibrosis is a progressive physiological change that occurs after liver injury and seriously endangers human health. The lack of reliable and physiologically relevant pathological models of liver fibrosis leads to a longer drug development period and sizeable economic investment. The fabrication of a biomimetic liver-on-a-chip is significant for liver disease treatment and drug development. Here, a sandwich chip with a microwell array structure in its bottom layer was fabricated to simulate the Disse space structure of hepatic sinusoids in vitro. By synergistic modulation of the cross-linking degree of gelatin-methacryloyl (GelMA) hydrogels and the induction of transforming growth factor-beta (TGF-β), the early and late stages of liver fibrosis were designed in the chip. Owing to its three-dimensional-mixed-culture strategy, it was possible to construct a liver sinusoid model in vitro to allow for faithful physiological emulation. The model was further subjected to drug treatment, and it presented a significant difference in treatment response in early and late fibrosis progression. Our system provides a unique method for emulating liver function through a vitro liver fibrosis-on-a-chip, potentially paving the way for investigating human liver fibrosis and related drug development.

Experimental Study of Atmospherically and Infrared-Dried Industrial Topcoats

In this paper, five different solvent-borne industrial topcoats were dried with infrared (IR) radiation and under atmospheric conditions. A comparison of physical, mechanical, chemical, and electrochemical properties of differently dried topcoats was made. The results of differential scanning calorimetry (DSC), Fourier-Transform Infrared Spectroscopy (FTIR), and adhesion of a topcoat to the metal substrate (determined by the pull-off test) indicate a higher degree of crosslinking of examined topcoats, which improves the coating’s protective properties. Scratch hardness was determined by the pencil hardness test. Impact resistance was examined with a falling-weight test. Changes in the shade of the coating were examined by visual inspection and using a gloss meter. The electrochemical measurements of open circuit potential (OCP) and electrochemical impedance spectroscopy (EIS) were conducted. The thermal stability of topcoats was tested by thermogravimetric analysis (TGA). The results show overall better properties of IR-dried topcoats. In addition, topcoats dry significantly faster when IR radiation is applied, which makes this drying method very interesting for industrial application.

Weakly Cross-Linked Anionic Copolymers: Kinetics of Swelling and Water-Retaining Properties of Hydrogels.

Six cross-linked copolymers consisting of sodium acrylate, N-acrylamide, starch fragments and a cross-linker were synthesized, potentially suitable for use in agriculture as superabsorbents. The copolymers had the same content of carboxyl groups equal to 6.2 mmoles per 1 g of copolymer and the content of cross-linker (Q) varied from 0.04 up to 1 wt.%. The copolymers swelled in a pH 6.5 aqueous buffer solution thus giving hydrogel particles, which were characterized by a set of methods including gravimetry, rheometry, swelling pressure analysis, equilibrium centrifugation and water retention analysis with the following main conclusions. An increase in Q decreases the equilibrium degree of swelling. When swelling in a solid substrate, sand or soil, the equilibrium degree of swelling shows the maximum at Q = 0.14 wt.%. The cross-linking degree controls the swelling pressure of hydrogels and water-retaining properties of solid substrates with embedded hydrogels; in both cases, the maximum effects are observed at Q = 0.14 wt.%. These extreme dependences set the algorithm for synthesis of polymeric superabsorbents and optimization of their operational characteristics.

Mechanism of Accelerated Deterioration of High-Temperature Vulcanized Silicone Rubber under Multi-Factor Aging Tests Considering Temperature Cycling.

High-temperature vulcanized silicone rubber (HTV-SR) employed for composite insulators is continuously subjected to a complex environment of alternating heat, corona discharge, humidity, etc. These stresses (especially alternating heat) complicate the aging mechanism of HTV-SR, which lacks systematic investigation. In this paper, a multi-factor aging platform considering temperature cycling, moisture, and corona discharge is established. Specifically, four temperature-cycling settings are employed, each of which lasts for 15 cycles. The surface morphology, hydrophobicity, and chemical, mechanical, and electrical properties of aged samples are methodically characterized. Experimental results show that the aging degree is correlated to the range of temperature cycling, which is attributed to diverse crosslink-degradation degrees with different temperature differences. Under a large temperature difference (70 °C), HTV-SR possesses a high crosslinking degree and a low degradation degree, making the material hard but easy to crack with alternating thermal stress. Then, severe defects and water condensation emerge on the HTV-SR surface, which promote the diffusion of corona products and water molecules into the material. The subsequent rise in crosslinking density caused by in-depth oxidation further exacerbates the aging of the material. Consequently, it brings about poor hydrophobicity, high interfacial polarization, and shallow trap energy levels in HTV-SR. This work provides a detailed analysis of the aging mechanism of HTV-SR in a simulated on-site environment.

Characteristics and Functional Properties of Maillard Reaction Products from α-Lactalbumin and Polydextrose.

The characteristics and the functions of Maillard reaction products (MRPs) produced by polydextrose (PD), a new type of prebiotic, and α-lactalbumin (α-LA) were valued. PD and α-LA were incubated at 60 °C and 79% relative humidity for up to 72 h to prepare MRPs. The results showed that the absorbance and fluorescence intensity of heated α-LA-PD increased, and the amount of free amino groups reduced as the reaction progressed, which confirmed the formation of different stages of MRPs. Electrophoresis revealed an increase in molecular mass and the degree of covalent cross-linking. The secondary structure of MRPs experienced no significant changes with the measurement of circular dichroism (CD), while the tertiary structure gradually unfolded, exposing hydrophobic groups. Furthermore, a significant increase was detected in the radical-scavenging activity of 2,2-diphenyl-1-picrylhydrazyl (DPPH) and the ferric reducing/antioxidant power (FRAP) of MRPs. The findings offer a foundation for understanding the structural and functional features of MRPs in formula milk powder.

Synthesis of UV rapid curing silicone coatings via photoinitiated thiol-ene click polymerization for pressure-sensitive adhesive

UV-curable silicone pressure-sensitive adhesive (SPSA) is composed of silicone rubber and silicone resin. Generally, the CC double bond in acryloyloxy group provides a photocurable group for SPSA. However, oxygen inhibition of acryloyloxy group block the degree of cure and CC double bond conversion of SPSA during the photopolymerization. Therefore, efficient photocurable groups for UV curing SPSA is particularly important to be developed. Thiol-ene click polymerizations have been widely used in photocrosslinked polymers due to the rapid efficiency of reactions. In this study, sulfhydryl functionalized silicone resin (SFSR) and methacrylate functionalized amino silicone rubber (MFASR) were synthesized to prepare a SPSA via photoinitiated thiol-ene click polymerization. The double bond in MSASR and sulfhydryl in SFSR were characterized by FT-IR spectroscopy and 1H NMR spectroscopy. The double bond conversion of SPSA was calculated after polymerization. The cohesion of SPSA was improved by SFSR, while the crosslinking degree was improved by thiol-ene. The loop tack of SPSA with 50 wt% SFSR was 9.01 N, and the 180° peel strength was 11.37 N/25 mm. The SPSA maintained good bonding adhesion to steel at various temperature.

Preparation of organic solvent forward osmosis membranes using a thermally facilitated strategy for the separation of alcohols and pharmaceuticals

Organic solvent forward osmosis (OSFO) process is a potential method for separating pharmaceuticals from organic solvents due to its low energy consumption and without external pressure requirements. However, OSFO process is limited in practical application due to low solvent flux. Here we reported the use of organic solvent pressure-assisted osmosis (OSPAO) process, which is a novel OSFO operation with increases a driving force (≤1 bar) in the same direction as solvent flow, enhancing solvent flux by combining osmotic pressure driving force with external hydraulic pressure. This work highlights a thermal facilitated simultaneous phase-inversion and crosslinking (T-SIM) strategy, which facilitates crosslinking degree and reduces preparation time and multi-step operations of solvent-resistant polyimide (PI) substrates. The temperature and extended time during the T-SIM strategy can more effectively controlling the physicochemical property and surface pore structures of solvent-resistant PI substrates. The morphological and physicochemical changes of the solvent-resistant PI substrates were observed by SEM, AFM, XPS, TG, contact angle and ATR-FTIR spectroscopy. Polyamide (PA) membranes were produced on the solvent-resistant PI substrates using an interfacial polymerization (IP) process, which led to the creation of defect-free PA layers with “ridge-and-valley” patterns. The methanol flux of 9.65 L m-2h−1 (LMH) and oxytetracycline (OTC) rejection of > 91% under the organic solvent nanofiltration test were achieved for the optimized T-SIM120 membrane, while the ethanol flux of 7.24 LMH and OTC rejection higher than 97% were observed under the OSPAO test. Additionally, DMF activation improved membrane permeance, the maximum ethanol flux of the T-SIM120 membrane after 2 h DMF activation reached 8.27 LMH under 1 bar during the OSPAO process and OTC rejection > 97%. The OSPAO process in this work demonstrated higher ethanol flux compared to the OSN process, lower Js/Je and enhanced OTC rejection compared to the OSFO process. Then the unique characteristic makes OSPAO process a desirable technology for solvent recovery in the pharmaceutical industry.

Equimolar Polyampholyte Hydrogel Synthesis Strategies with Adaptable Properties.

Polyampholyte hydrogels exhibit great antibacterial and antifouling properties, which make them attractive for biomedical applications, such as drug delivery, wound healing, and tissue engineering. They also have potential applications in food safety, wastewater treatment, and desalination. Since they are based on ionic interactions, polyampholytes are known to require lower amounts of chemical cross-linkers as compared with traditional gels. However, the effects of both chemical and physical interactions on the material's performance are yet to be fully understood and were examined in the present work. Here, four series of equimolar polyampholyte hydrogels were synthesized with anionic (acrylamidomethylpropane sulfonic acid sodium salt) and cationic monomers (acrylamidopropyl-trimethylammonium chloride) along with a cross-linker (N,N'-methylenebisacrylamide). The mechanical and rheological properties of the gels were characterized following changes to the initial monomer concentration and crosslinker ratios, which led to gels with different toughness, stretchability, and compressibility. The direct correlation of the cross-linking degree with the initial monomer concentration showed that the chemical crosslinker could be further reduced at a high monomer concentration of 30% by weight, which creates an inter-chain network at a minimal crosslinker concentration of 0.25%. Lastly, N'N-dimethylacrylamide was added, which resulted in an increase in the number of H-bonds in the structure, noticeably raising material performance.

Low temperature preparation of high-performance citric acid crosslinked starch gels with adjustable properties based on cationic esterification synergistic crosslinking

Citric acid (CA) is a commonly used crosslinking agent for good-grade starch gels, but its high crosslinking temperature limits its application. Recent attempts to prepare CA-crosslinked modified starch gels (SC) at low temperatures have resulted in low crosslinking degrees that do not meet application requirements. This study presents a new method for stable preparation of high-strength Fe3+-CA synergistic crosslinked starch gels at low temperatures (90 °C), carried out in a stable and controlled multi-physical field high-shear reaction environment. The enhancement effect of synergistic crosslinking reaction on starch gel properties was quantitatively characterized by linear and nonlinear rheological properties. The results showed that the elastic modulus of synergistically crosslinked modified SC-0.6Fe3+ (G' = 1082.71 ± 21.50) at 0.1% strain was significantly increased by 491.57% compared to the elastic modulus of SC (G' = 183.04 ± 13.32) without synergistic crosslinking modification. SC-0.6Fe3+ demonstrated the largest elastic Lissajous ring area, indicating stronger resistance to deformation in the synergistic crosslinked gel system. Additionally, adjusting the cation concentration allowed for flexible modulation of the rheological properties of starch gels. SEM and N2 adsorption data revealed that SC-0.6Fe3+ had a denser honeycomb porous structure and a smaller pore size distribution. FTIR, XRD, DSC, and TGA results suggested that the synergistic crosslinking enhancement effect might be achieved through electrostatic attraction, hydrogen bonding, ionic dipole interactions, and ester bonding. Our work provides an effective strategy for batch preparation of adjustable high-performance food-grade crosslinked starch gels in low-temperature environments.