Effect of mechanical strength on chitosan-pva blend through ionic crosslinking for food packaging application

Jahan, Firdos; Mathad, R. D.; Farheen, Shazia

doi:10.1016/j.matpr.2016.11.014

Cited by 24 publications

(8 citation statements)

References 20 publications

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“…The addition of either agarose or both agarose and D‐glucose to PVA disturbed the ordered arrangement of the matrix, thus resulting in the decrease of peak intensity. This can be explained due to the disruption of some crystalline domains when intra‐molecule hydrogen bonds within PVA molecules were replaced by inter‐molecular hydrogen bonds among PVA and these additives, as similar to what normally observed when a cross‐linker established hydrogen bonded with a polymer matrix [10,50] . In contrast, the crystallinity of the PDA‐PBLLE film increased with increasing PBLLE loading, suggesting that interactions between chemical compounds in the extract and the PVA matrix induced a re‐arrangement of the network toward a more ordered structure.…”

Section: Resultssupporting

confidence: 55%

“…However, humidity‐sensitive physicochemical and mechanical properties due to the affinity of these groups toward water molecules [6,8,9] appear as disadvantages for the diverse applications of PVA films. To overcome these drawbacks, various chemical modification routes have been attempted by a number of researchers [10] . For instance, the combination of PVA and biopolymers such as starch, [4,6,11] gelatin, [12] agar [5] promoted remarkable improvement in mechanical behavior, regarding either the film flexibility or tensile strength, but simultaneously increased the water affinity of the resulting films.…”

Section: Introductionmentioning

confidence: 99%

“…In this context, cross‐linking methods have been most commonly applied not only to enhance the water‐resistance but also to improve the mechanical properties and compatibility of components in PVA‐based blends relying on interactions between functional groups of cross‐linkers and hydroxyl groups of the PVA chains [1,14] . Accordingly, several PVA‐based blends with enhanced properties have been developed such as PVA/chitosan crosslinked by glutaraldehyde, [15] PVA/chitosan derivative crosslinked by glutaraldehyde, [16] PVA/methylated ‐cornstarch using formaldehyde as a hydroxyl cross‐linker, [4] and PVA/chitosan crosslinked by KNO 3 [10] . On the other hand, recent studies have moving forward to utilize human‐safe botanical modifiers instead of synthetic chemicals to develop green packaging materials.…”

Section: Introductionmentioning

confidence: 99%

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Ecofriendly Active Poly(vinyl alcohol)/Agarose/D‐glucose/Piper Betle Linn. Leaf Extract Films as Potential Packaging Materials

et al. 2022

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The present study aimed at developing ecofriendly active films from poly(vinyl alcohol) (PVA), agarose, D-glucose and Piper betle Linn. leaf extract (PBLLE) using a solution casting method. Agarose, D-glucose and PBLLE have been found to exhibit excellent compatibility with the PVA-matrix and thus support desired changes in the film characteristics. The co-addition of agarose and D-glucose to PVA gave rise to water-resistance as well as flexibility of the PVA-based films. The incorporation of PBLLE imparted active functions to the PVA/agarose/D-glucose film, such as the ability to scavenge DPPH radicals and strong antibacterial activity against both Gram-negative and Gram-positive bacteria. Moreover, significant improvement in both mechanical strength and flexibility of the PVA/agarose/Dglucose films was obtained upon the addition of a sufficient amount of PBLLE. A PBLLE/PVA ratio of 1.5 was found to promote a more than 1.5-fold increase of the elongation at break. Increasing PBLLE content in the films enhanced the UV absorption in the 300-450 nm range. Characterization results show that the PVA/agarose/D-glucose/PBLLE films possess interesting properties for UV-protective and active packaging applications.

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Section: Resultssupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ecofriendly Active Poly(vinyl alcohol)/Agarose/D‐glucose/Piper Betle Linn. Leaf Extract Films as Potential Packaging Materials

et al. 2022

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“…The individual solutions of CTS and PVA were magnetically stirred for at least 2 h up to make them homogeneous. Thereafter, the blend was kept under magnetic stirring for 20 min before using it [58]. To compare the properties of the fibers without CTS and without nanoparticles, pure 8 wt% PVA fibers were also prepared.…”

Section: Preparation Of Pva-cts and Pva-cts-ag Nps Electrospun Fibersmentioning

confidence: 99%

In Situ Growth of Silver Nanoparticles on Chitosan Matrix for the Synthesis of Hybrid Electrospun Fibers: Analysis of Microstructural and Mechanical Properties

et al. 2022

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A viable alternative for the next generation of wound dressings is the preparation of electrospun fibers from biodegradable polymers in combination with inorganic nanoparticles. A poly(vinyl alcohol)-chitosan-silver nanoparticles (PVA-CTS-Ag NPs) system has been developed for antimicrobial and wound healing applications. Here, the preparation of PVA-CTS-Ag electrospun fibers using a two-step process is reported in order to analyze changes in the microstructural, mechanical, and antibacterial properties and confirm their potential application in the biomedical field. The Ag nanoparticles were well-dispersed into the chitosan matrix and their cubic structure after the electrospinning process was also retained. The Ag NPs displayed an average diameter of ~33 nm into the CTS matrix, while the size increased up to 213 nm in the PVA-CTS-Ag(NPs) fibers. It was observed that strong chemical interactions exist between organic (CTS) and inorganic phases through nitrogenous groups and the oxygen of the glycosidic bonds. A defect-free morphology was obtained in the PVA-CTS-Ag NPs final fibers with an important enhancement of the mechanical properties as well as of the antibacterial activity compared with pure PVA-CTS electrospun fibers. The results of antibacterial activity against E. coli and S. aureus confirmed that PVA-CTS-Ag(NPs) fibers can be potentially used as a material for biomedical applications.

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“…On the other hand, the oxygen permeability has been increased with PCL incorporation. Jahan et al (2016) have studied blends of chitosan obtained from shrimp with PVA for packaging purposes with a specific reference to the mechanical strength of the produced film. The particular blend was chemically modified by the addition of ionic cross linkers (potassium nitrate).…”

Section: Chitosan-based Packagingmentioning

confidence: 99%

A comprehensive review on the properties and functionalities of biodegradable and semibiodegradable food packaging materials

Thuppahige

Karim

2021

Comp Rev Food Sci Food Safe

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The development of biodegradable food packaging with superior properties and functionalities compared to conventional food packaging is one of the emerging research interests. Immediate disposal of conventional single use nonbiodegradable food packaging results in adverse environmental impact. Utilization of either biomass‐based, microorganism‐derived, or biotechnologically synthesized biopolymers as biodegradable matrices is the common approach toward achieving sustainability. Consequently, starch and cellulose are being commonly used as biodegradable matrices. However, rather than being fully biodegradable, most of them can be considered as semibiodegradable. Majority of the review studies are based on matrices that have an origin in edible sources, which might result in food insecurity. Although development of bio‐based polymers with sound packaging properties have been extensively studied, the potential agro‐industrial waste as alternative, eco‐friendly, and economically viable matrices have attracted little attention. Therefore, the approaches of developing biodegradable food packaging and the framework of converting agro‐industrial waste into biodegradable packaging matrices are discussed comparatively in this paper. It also critiques the approaches and valorization of agro‐industrial waste in biodegradable food packaging. Thereby, an overview of physicochemical, functional, and biodegradable properties of commonly used biodegradable food packaging materials are provided as an insight for agro‐industrial waste‐based food packaging. The potential use of agro‐industrial waste‐based biodegradable food packaging materials against commonly used biodegradable food packaging materials has been highlighted in this study. Thereby, the vital necessity of growing awareness about agro‐industrial waste as biodegradable food packaging materials is emphasized through this comprehensive review.

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Effect of mechanical strength on chitosan-pva blend through ionic crosslinking for food packaging application

Cited by 24 publications

References 20 publications

Ecofriendly Active Poly(vinyl alcohol)/Agarose/D‐glucose/Piper Betle Linn. Leaf Extract Films as Potential Packaging Materials

Ecofriendly Active Poly(vinyl alcohol)/Agarose/D‐glucose/Piper Betle Linn. Leaf Extract Films as Potential Packaging Materials

In Situ Growth of Silver Nanoparticles on Chitosan Matrix for the Synthesis of Hybrid Electrospun Fibers: Analysis of Microstructural and Mechanical Properties

A comprehensive review on the properties and functionalities of biodegradable and semibiodegradable food packaging materials

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