Fabrication and characterization of CMC-based nanocomposites reinforced with sodium montmorillonite and TiO2 nanomaterials

Achachlouei, Bahram Fathi; Zahedi, Younes

doi:10.1016/j.carbpol.2018.07.031

Cited by 130 publications

(63 citation statements)

References 52 publications

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“…The addition of MMT significantly ( P < 0.05) increased the tensile strength and elasticity modulus of CMC/MMT film compared with pure CMC film. This may due to the strong interfacial interaction through hydrogen bonds between MMT and CMC . While the increase of tensile strength and elasticity modulus does not expense elongation at break, which was unlike the behavior of mechanical properties having been studied by Oun et al .…”

Section: Resultsmentioning

confidence: 99%

“…This may due to the strong interfacial interaction through hydrogen bonds between MMT and CMC. 12 While the increase of tensile strength and elasticity modulus does not expense elongation at break, which was unlike the behavior of mechanical properties having been studied by Oun et al 36 and Santos et al 37 The films mobility does not restrict due to the good interaction between CMC and MMT that leads to the effective transfer of applied stress through CMC-MMT layers and consequently, equal distribution of entered stress and reducing the stress concentrations. 38 In comparison with CMC/MMT film, the CMC/MMT/ε-PL film containing 2.5−10.0 wt % of ε-PL showed slight increase in tensile strength and elongation at break but there were no significant difference between them (P > 0.05), whiles the elasticity modulus significantly decreased (P < 0.05).…”

Section: Film Mechanical Propertymentioning

confidence: 86%

“…As shown in Table III, the CMC/MMT film had lower moisture content (16.52%) than that of pure CMC film (17.72%), probably because of the formation of hydrogen bonds between CMC and MMT. 40 After addition of ε-PL, the CMC/MMT/ε-PL 7.5 wt % film had the lowest moisture content of 15.15%, decreased by 14.50% compared with that of pure CMC film. However, when the ε-PL content exceeded 7.5 wt %, the moisture content increased significantly (P < 0.05).…”

Section: Film Moisture Contentmentioning

confidence: 89%

“…The desired mechanical and barrier properties of nanocomposite were achieved by exfoliation of MMT aggregates in the polymeric matrix. 11 Achachlouei et al 12 found that increasing MMT content in the CMC-based films resulted in decrease in water vapor permeability and elongation at break, but increase in ultimate tensile strength and Young's modulus of the CMC-based films. Moreover, the introduction of MMT into biopolymer matrixes can enhance their thermal stability.…”

Section: Introductionmentioning

confidence: 99%

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Carboxymethyl cellulose‐based nanocomposites reinforced with montmorillonite and ε‐poly‐l‐lysine for antimicrobial active food packaging

Xiang

2019

J of Applied Polymer Sci

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Traditional packaging materials with single function or weak activity cannot meet the requirements of active packaging. In this study, antimicrobial carboxymethyl cellulose (CMC)‐based nanocomposites containing montmorillonite (MMT) and ε‐poly‐(l‐lysine) (ε‐PL) were prepared by solution casting method. The morphological, optical, mechanical, barrier, thermal, and antimicrobial properties of the resulted ternary nanocomposites were investigated. The surface morphology of the films was dependent on the contents of the ε‐PL used. The incorporation of MMT and ε‐PL into CMC matrix improved the UV barrier property, tensile strength, hydrophobicity, and water vapor barrier property. When incorporation of 7.5 wt % ε‐PL, the tensile strength increased more than threefold and the water vapor permeability decreased by about 35% compared with pure CMC film, the water contact angle reached up to the highest value of 65.38°. The ε‐PL incorporated CMC/MMT films exhibited good antimicrobial activities against Gram‐positive (Staphylococus aureus) and Gram‐negative (Escherichia coli) bacteria and fungi (Botrytis cinerea and Rhizopus oligosporus). Microbial growth inhibition rate of above 90% was obtained when the content of ε‐PL got up to 7.5 wt %. In addition, CMC/MMT/ε‐PL7.5 wt % film‐forming solution having the appropriate properties was used as coating for the strawberries preservation, the shelf life of strawberries was extended for 2 days. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48782.

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Section: Resultsmentioning

confidence: 99%

Section: Film Mechanical Propertymentioning

confidence: 86%

Section: Film Moisture Contentmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

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Carboxymethyl cellulose‐based nanocomposites reinforced with montmorillonite and ε‐poly‐l‐lysine for antimicrobial active food packaging

Xiang

2019

J of Applied Polymer Sci

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“…Additionally, these ENMs were also blended with natural hydrocolloids, such as chitosan, [ 38 ] shellac, [ 39 ] starch, [ 40 ] carboxymethyl cellulose, [ 41 ] and cyclodextrin, [ 42 ] with varying concentrations to produce antimicrobial edible food coating (summarized here [ 43 ] ). There is very limited information on the oral exposure level to these nano‐enabled edible coatings, as many of these products are still in their development stage.…”

Section: Oral Exposure To Enms—is It Real and Relevant?mentioning

confidence: 99%

Transformation of Nanomaterials and Its Implications in Gut Nanotoxicology

Setyawati

Zhao

2020

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Ingestion of engineered nanomaterials (ENMs) is inevitable due to their widespread utilization in the agrifood industry. Safety evaluation has become pivotal to identify the consequences on human health of exposure to these ingested ENMs. Much of the current understanding of nanotoxicology in the gastrointestinal tract (GIT) is derived from studies utilizing pristine ENMs. In reality, agrifood ENMs interact with their microenvironment, and undergo multiple physicochemical transformations, such as aggregation/agglomeration, dissolution, speciation change, and surface characteristics alteration, across their life cycle from synthesis to consumption. This work sieves out the implications of ENM transformations on their behavior, stability, and reactivity in food and product matrices and through the GIT, in relation to measured toxicological profiles. In particular, a strong emphasis is given to understand the mechanisms through which these transformations can affect ENM induced gut nanotoxicity.

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