Effect of crosslinking agent (glutaraldehyde) on the mechanical properties of (PVA/Starch) blend and (PVA/PEG) binary blend films

Musa, Bushra H.; Hameed, Nahida J.

doi:10.1088/1742-6596/1795/1/012064

Cited by 12 publications

(6 citation statements)

References 10 publications

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“…GTA was used as a crosslinking agent to improve the handling properties of the films. This can be reasoned to reduced mobility of the polymer chains due to the crosslinking reaction, which increased the films’ tensile strength [ 38 ]. The physical and mechanical properties of the PVA/ cellulose film were significantly improved upon GTA addition [ 39 ].…”

Section: Resultsmentioning

confidence: 99%

Effect of Tamarind Gum on the Properties of Phase-Separated Poly(vinyl alcohol) Films

Rawooth

Habibullah²,

Qureshi

et al. 2022

Polymers

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The current study aims to evaluate the effect of tamarind gum (TG) on the optical, mechanical, and drug release potential of poly(vinyl alcohol) (PVA)-based films. This involves preparing PVA-TG composite films with different concentrations of TG through a simple solvent casting method. The addition of TG has enhanced the phase separation and aggregation of PVA within the films, and it becomes greater with the increase in TG concentration. Brightfield and polarized light micrographs have revealed that aggregation is favored by forming crystalline domains at the PVA-TG interface. The interconnected network of PVA-TG aggregates influenced the swelling and drying properties of the films. Using Peleg’s analysis, the mechanical behavior of films was determined by their stress relaxation profiles. The addition of TG has made no significant changes to the firmness and viscoelastic properties of films. However, long-durational relaxation times indicated that the interconnected network might break down in films with higher TG concentration, suggesting their brittleness. The controlled release of ciprofloxacin in HCl solution (0.5% (w/v)) appears to decrease with the increase in TG concentration. In fact, TG has inversely affected the impedance and altered the ionic conductivity within the films. This seems to have directly influenced the drug release from the films as the mechanism was found to be non-Fickian diffusion (based on Korsmeyer–Peepas and Peppas–Sahlin kinetic models). The antimicrobial study using Escherichia coli was carried out to evaluate the activity of the drug-loaded films. The study proves that TG can modulate the properties of PVA films and has the potential to fine-tune the controlled release of drugs from composite films.

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Section: Resultsmentioning

confidence: 99%

Effect of Tamarind Gum on the Properties of Phase-Separated Poly(vinyl alcohol) Films

Rawooth

Habibullah²,

Qureshi

et al. 2022

Polymers

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“…This study also provides a facile framework to manufacture hydrogel-reinforced hydrogels with hierarchical structures to achieve increased tensile and mechanical properties whilst retaining the high-equilibrium water content similar to those seen in native human tissues. Studies where hydrogel strengths exceeded 1 MPa have used either chemical crosslinking [ 39 , 40 , 41 ] or other more complex methods such as freeze-casting [ 42 ], freeze-assisted salt-leaching [ 42 ], or molecular self-assembly [ 43 ]. This study would be useful as a reference for future studies wanting to engineer strong hydrogel constructs to repair or replace soft tissues in humans.…”

Section: Discussionmentioning

confidence: 99%

Theta-Gel-Reinforced Hydrogel Composites for Potential Tensile Load-Bearing Soft Tissue Repair Applications

Virdi,

Lu,

Zreiqat

et al. 2023

JFB

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Engineering synthetic hydrogels for the repair and augmentation of load-bearing soft tissues with simultaneously high-water content and mechanical strength is a long-standing challenge. Prior formulations to enhance the strength have involved using chemical crosslinkers where residues remain a risk for implantation or complex processes such as freeze-casting and self-assembly, requiring specialised equipment and technical expertise to manufacture reliably. In this study, we report for the first time that the tensile strength of high-water content (>60 wt.%), biocompatible polyvinyl alcohol hydrogels can exceed 1.0 MPa through a combination of facile manufacturing strategies via physical crosslinking, mechanical drawing, post-fabrication freeze drying, and deliberate hierarchical design. It is anticipated that the findings in this paper can also be used in conjunction with other strategies to enhance the mechanical properties of hydrogel platforms in the design and construction of synthetic grafts for load-bearing soft tissues.

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“…They reported that the tensile strength of the plastics prepared using rice starch cross-linked with 1%, 2% and 3% of STMP were 6.3, 7.23 and 8.23 MPa, respectively. Musa and Hameed (2021) The effect of the cross-linking agent on the tensile strength of the plastics is related to the reinforcement effect of the cross-linking. One molecule of cross-linking agent connects two molecules of amylose or amylopectin.…”

Section: Tensile Strengthmentioning

confidence: 99%

Biodegradable plastic from cross-linked rice flour: Effect of cross-linking agent and plasticizer

Ratnawati,

Hamidah,

Pradana

et al. 2024

Int. J. Appl. Sci. Eng.

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Plastics made from petroleum have long been used in packaging. However, most plastics end up in landfills and bodies of water. Moreover, plastic does not degrade for hundreds of years, creating an issue for the ecosystem. One of the solutions is to use biodegradable plastic instead of petroleum-based plastic. Numerous studies have been conducted on manufacturing biodegradable plastic from renewable resources like starch. Rice flour, which contains up to 93.3% starch, is a potential material for biodegradable plastic. The flour was modified by cross-linking with sodium trimetaphosphate (STMP) before producing biodegradable plastic. This work aimed to study the effect of the amount of STMP (1%, 2% and 3%), the type of plasticizer (glycerol and sorbitol), and the amount of the plasticizer (40%, 50% and 60%) on the properties of the plastic. The amount of STMP decreases the swelling index and increases the tensile strength, but it does not significantly affect the biodegradability of the plastic. Although the plasticizer enhances biodegradability and reduces the tensile strength, it has little effect on the swelling index. The glycerol-plasticized plastic has a higher swelling index and biodegradability but lower tensile strength than the sorbitol-plasticized plastic. Plastic with 40% sorbitol and 3% STMP has the highest tensile strength (4.3 MPa).

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Effect of crosslinking agent (glutaraldehyde) on the mechanical properties of (PVA/Starch) blend and (PVA/PEG) binary blend films

Cited by 12 publications

References 10 publications

Effect of Tamarind Gum on the Properties of Phase-Separated Poly(vinyl alcohol) Films

Effect of Tamarind Gum on the Properties of Phase-Separated Poly(vinyl alcohol) Films

Theta-Gel-Reinforced Hydrogel Composites for Potential Tensile Load-Bearing Soft Tissue Repair Applications

Biodegradable plastic from cross-linked rice flour: Effect of cross-linking agent and plasticizer

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