Mechanical behavior of biopolymer composite coatings on plastic films by depth-sensing indentation – A nanoscale study

Rovera, Cesare; Cozzolino, Carlo A.; Ghaani, Masoud; Morrone, Davide; Olsson, Richard T.; Farris, Stefano

doi:10.1016/j.jcis.2017.10.108

Cited by 10 publications

(2 citation statements)

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“…Nanoindentation can provide detailed information from a high local deformation, which is of great importance for systems with limited dimensionality, such as thin films and coatings. This technique permits identification of transition zones between phases in heterogeneous materials, specifically on their surface or interface at very low sensitivity ranges [39]. Thus, mechanical properties of samples showing small local deformation such as thin coatings can be successfully characterized by analyzing their surface [40].…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Modified Starch-Chitosan Edible Films: Physicochemical and Mechanical Characterization

et al. 2017

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Starch and chitosan are widely used for preparation of edible films that are of great interest in food preservation. This work was aimed to analyze the relationship between structural and physical properties of edible films based on a mixture of chitosan and modified starches. In addition, films were tested for antimicrobial activity against Listeria innocua. Films were prepared by the casting method using chitosan (CT), waxy (WS), oxidized (OS) and acetylated (AS) corn starches and their mixtures. The CT-starches films showed improved barrier and mechanical properties as compared with those made from individual components, CT-OS film presented the lowest thickness (74 ± 7 µm), water content (11.53% ± 0.85%, w/w), solubility (26.77% ± 1.40%, w/v) and water vapor permeability ((1.18 ± 0.48) × 10−9 g·s−1·m−1·Pa−1). This film showed low hardness (2.30 ± 0.19 MPa), low surface roughness (Rq = 3.20 ± 0.41 nm) and was the most elastic (Young’s modulus = 0.11 ± 0.06 GPa). In addition, films made from CT-starches mixtures reduced CT antimicrobial activity against L. innocua, depending on the type of modified starch. This was attributed to interactions between acetyl groups of AS with the carbonyl and amino groups of CT, leaving CT with less positive charge. Interaction of the pyranose ring of OS with CT led to increased OH groups that upon interaction with amino groups, decreased the positive charge of CT, and this effect is responsible for the reduced antimicrobial activity. It was found that the type of starch modification influenced interactions with chitosan, leading to different films properties.

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Section: Mechanical Propertiesmentioning

confidence: 99%

Modified Starch-Chitosan Edible Films: Physicochemical and Mechanical Characterization

et al. 2017

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“…Due to its hydrophobic surface with low surface energy and bad electrolyte wettability, polyolefin separators have many disadvantages in battery application, such as poor liquid electrolyte absorption and retention, and big internal resistance. Many new functional separators are needed for high performance cells [5].…”

Section: Introductionmentioning

confidence: 99%

Effects of Coated Separator Surface Morphology on Electrolyte Interfacial Wettability and Corresponding Li–Ion Battery Performance

Huang

Tian

et al. 2020

Polymers

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In order to study the effect of interfacial wettability of separator on electrochemical properties for lithium–ion batteries, two different kinds of polyvinylidene fluoride-hexafluoropropylene (PVDF–HFP) solution are prepared and used to coat onto a polypropylene (PP) microporous membrane. It is found that the cell performance of a coated separator using aqueous slurry (WPS) is better than that of the coated separator using acetone (APS) as the solvent. The separator with flat and pyknotic surface (PP and APS) has a strong polar action with the electrolyte, where the polar part is more than 80%. To the contrary, the WPS has a roughness surface and when the PVDF–HFP particles accumulate loose, it makes the apolar part plays a dominate role in surface free energy; the dispersive energy reaches to 40.17 mJ m−2. The WPS has the lowest immersion free energy, 31.9 mJ m−2 with the electrolyte, and this will accelerate electrolyte infiltration to the separator. The loose particle accumulation also increases the electrolyte weight uptake and interfacial wettability velocity, which plays a crucial role in improving the cell performance such as the ionic conductivity, discharge capacity and the C-rate capability.

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Advances in interfacially engineered surface‐functionalized fillers for multifunctional polymer composite coatings

Maalihan,

Domalanta,

Corrales

et al. 2024

Polymer Composites

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The demand for multifunctional, high‐performance materials has driven advancements in surface‐functionalized fillers for polymer composite coatings. Despite progress, integrating multiple protective properties within a single hybrid formulation remains a challenge. This review explores recent developments in surface and interfacial engineering of biosourced fillers, including nanocellulose, and 2D materials like graphene oxide, MXenes, and layered double hydroxides, all of which have the potential to enhance the chemical resistance, mechanical strength, and thermal stability of polymer coatings. Key strategies include physical/chemical surface treatments, nanostructuring, and multiscale engineering to optimize cohesion, adhesion, and multivalent interactions among fillers, matrices, and substrates. The role of computational modeling in performance prediction and optimization is also discussed. The review concludes with current challenges and future directions, highlighting the importance of surface functionalization and interfacial engineering in developing next‐generation, multifunctional, and protective polymer coatings.Highlights Functionalized fillers boost polymer coatings' performance. 2D nanomaterials enhance coatings' resistance to corrosion, wear, and fire. Bio‐based fillers offer sustainable solutions for lightweight, robust coatings. Advanced interfacial engineering improves adhesion and coating durability. Modeling accelerates coating design by predicting interfacial interactions.

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Mechanical behavior of biopolymer composite coatings on plastic films by depth-sensing indentation – A nanoscale study

Cited by 10 publications

References 50 publications

Modified Starch-Chitosan Edible Films: Physicochemical and Mechanical Characterization

Modified Starch-Chitosan Edible Films: Physicochemical and Mechanical Characterization

Effects of Coated Separator Surface Morphology on Electrolyte Interfacial Wettability and Corresponding Li–Ion Battery Performance

Advances in interfacially engineered surface‐functionalized fillers for multifunctional polymer composite coatings

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