Effect of Gamma Radiation on the Properties of Crosslinked Chitosan Nano-composite Film

Ghaffar, A. M. Abdel; Ali, Hussein E.; Nasef, Shaimaa M.; El-Bialy, Heba A.

doi:10.1007/s10924-018-1208-5

Cited by 23 publications

(20 citation statements)

References 32 publications

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“…The (T on ) and the (T max ) was shifted to a higher temperature after the gamma radiation treatment on the seaweed-neem composite film optimally at 1.5 kGy at 273.5 and 262 • C. Further increase in radiation treatment by 2.0 kGy resulted in a decrease in the degradation temperature and percent residue of the film by 251.21 • C and 30.2%, respectively. These findings were in good agreement with a previously reported study by [58], and it was revealed that the crosslinking of chitosan nanocomposite film with citric acid and magnesium oxide demonstrated an increase in thermal stability to up to 1.5 kGy of a gamma radiation dose. Generally, the TGA results of the irradiated seaweed-neem composite films indicated that the developed films exhibited higher thermal stability.…”

Section: Wavenumber (Cm −1 )supporting

confidence: 93%

Functional Properties of Antimicrobial Neem Leaves Extract Based Macroalgae Biofilms for Potential Use as Active Dry Packaging Applications

et al. 2021

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Antimicrobial irradiated seaweed–neem biocomposite films were synthesized in this study. The storage functional properties of the films were investigated. Characterization of the prepared films was conducted using SEM, FT-IR, contact angle, and antimicrobial test. The macroscopic and microscopic including the analysis of the functional group and the gas chromatography-mass spectrometry test revealed the main active constituents present in the neem extract, which was used an essential component of the fabricated films. Neem leaves’ extracts with 5% w/w concentration were incorporated into the matrix of seaweed biopolymer and the seaweed–neem bio-composite film were irradiated with different dosages of gamma radiation (0.5, 1, 1.5, and 2 kGy). The tensile, thermal, and the antimicrobial properties of the films were studied. The results revealed that the irradiated films exhibited improved functional properties compared to the control film at 1.5 kGy radiation dosage. The tensile strength, tensile modulus, and toughness exhibited by the films increased, while the elongation of the irradiated bio-composite film decreased compared to the control film. The morphology of the irradiated films demonstrated a smoother surface compared to the control and provided surface intermolecular interaction of the neem–seaweed matrix. The film indicated an optimum storage stability under ambient conditions and demonstrated no significant changes in the visual appearance. However, an increase in the moisture content was exhibited by the film, and the hydrophobic properties was retained until nine months of the storage period. The study of the films antimicrobial activities against Staphylococcus aureus (SA), and Bacillus subtilis (BS) indicated improved resistance to bacterial activities after the incorporation of neem leaves extract and gamma irradiation. The fabricated irradiated seaweed–neem bio-composite film could be used as an excellent sustainable packaging material due to its effective storage stability.

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Section: Wavenumber (Cm −1 )supporting

confidence: 93%

Functional Properties of Antimicrobial Neem Leaves Extract Based Macroalgae Biofilms for Potential Use as Active Dry Packaging Applications

et al. 2021

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“…While at higher doses 15 up to 30 kGy degradation occur where tensile strength decreased and elongation (%) increased. This could be due to increase in interfacial adhesion between PVA and starch that forms crosslinked structure by gamma irradiation up to 10 kGy [5][6][7][8][9] followed by degradation at higher doses 15 up to 30 kGy. Moreover, the improved and higher tensile properties of PVA/ Starch /Citric/Glycerol bioblend lm with composition (2:1:1/10vol %) either blank (at dose 0 kGy) or radiation cured at dose 10 kGy were compared with commercially LDPE and PP lms [5,6,20] at high load 100N as shown in table (1).…”

Section: Mechanical Testingmentioning

confidence: 99%

“…Radiation techniques are also being successfully utilized in the preparation and production of advanced bioblends for various applications, which have contributed to a longer shelf life and a decreased incidence of contamination [5][6][7][8][9]. The aim of this study is to nd a suitable method by using radiation technique for preparation and modi cation of non expansive biodegradable bioblend lm to be alternatives to the petroleum synthetic polymers with good water resistance, high thermal stability and improved mechanical properties that can be applied in different elds such as packaging.…”

Section: Introductionmentioning

confidence: 99%

“…The petroleum used synthetic polymers and its adverse effects of environmental pollution due to its limitation of recyclability and non biodegradability, promote many research on synthesis of new biodegradable renewable sources alternatives such as starch, cellulose, protein, chitin, etc due to their biodegradation and have been considered as alternatives for the nonbiodegradable petroleum based polymers [1][2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

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Radiation Modification and Characterization of Polyvinyl alchohol/Starch/Citric Acid/Glycerol Bioblend Film

Ghaffar¹,

Ali

2021

Preprint

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The blending of polyvinyl alcohol (PVA) with starch with different content of citric acid as crosslinker and glycerol as plasticizer were performed by casting method. The hydroxyl groups of PVA and Starch react with the citric acid (1 %) and glycerol (10 vol %) to form crosslinked network. The FTIR spectral analyses show the successful preparation of the different composition of the prepared PVA/ Starch /Citric acid/Glycerol bioblend films. It is found that the prepared PVA/ Starch /Citric acid/Glycerol with composition (2:1:1/10 vol %) bioblend film characterized by higher water resistance, good mechanical and higher thermal stability than other prepared bioblend films. The using of gamma radiation improved and modified water resistance property were the water uptake at equilibrium reduced remarkably at dose of 10 kGy. Also the thermal stability increased as irradiation dose increased up to dose of 30 kGy The improved mechanical and thermal properties of the selected PVA/ Starch /Citric acid/Glycerol with composition (2:1:1/10 vol %) bioblend film were compared with LDPE and PP packaging films and found to be competitive to the these commercially packaging films which are also nonbiodegradable synthetic polymers than the prepared selected PVA/ Starch /Citric acid/Glycerol with composition (2:1:1/10 vol %) bioblend film. Hence this study can be represent potential development of low cost-effective and modified PVA/ Starch /Citric acid/Glycerol with composition (2:1:1/10 vol %) bioblend film that characterized by several advantages over the commercially available petrochemical films and can be used in different applications such as packaging industry.

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“…Dry heat or steam sterilization of chitosan require heating at high temperatures reducing the efficiency of chitosan. Ethylene oxide sterilization leave toxic residues which compromise the biocompatibility of chitosan while gamma irradiation may be a suitable method as the biocompatibility of chitosan is not affected (6) .…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Surface Characteristic of Ti- Implant Coated with Nano-Ceramic and Chitosan after Sterilization by Gamma Irradiation

et al. 2022

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Effect of Gamma Radiation on the Properties of Crosslinked Chitosan Nano-composite Film

Cited by 23 publications

References 32 publications

Functional Properties of Antimicrobial Neem Leaves Extract Based Macroalgae Biofilms for Potential Use as Active Dry Packaging Applications

Functional Properties of Antimicrobial Neem Leaves Extract Based Macroalgae Biofilms for Potential Use as Active Dry Packaging Applications

Radiation Modification and Characterization of Polyvinyl alchohol/Starch/Citric Acid/Glycerol Bioblend Film

Evaluation of Surface Characteristic of Ti- Implant Coated with Nano-Ceramic and Chitosan after Sterilization by Gamma Irradiation

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