Improved properties of polyvinyl alcohol films blended with aligned nanocellulose particles induced by a magnetic field

Li, Liling; Wang, Wenxiu; Sun, Jianfeng; Chen, Zhizhou; Ma, Qianyun; Ke, Huizhen; Yang, Jixing

doi:10.1016/j.fpsl.2022.100985

Cited by 6 publications

(5 citation statements)

References 50 publications

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“…The diffraction intensity peaks of PDL were found at 10.12 and 26.94°. In the XRD pattern of Chit/PVA–PDL film, a new peak appeared at 9.15° due to the addition of PDL, indicating better compatibility between the PDL and Chit/PVA in the film, which endowed better mechanical properties to the indicator films . Moreover, the pronounced peak of the Chit/PVA film was found at 19.96°, while the diffraction intensity peaks of Chit/PVA–PDL films were found at 20.27 and 27.08°.…”

Section: Resultsmentioning

confidence: 96%

“…In the XRD pattern of Chit/PVA−PDL film, a new peak appeared at 9.15°due to the addition of PDL, indicating better compatibility between the PDL and Chit/PVA in the film, which endowed better mechanical properties to the indicator films. 34 Moreover, the pronounced peak of the Chit/PVA film was found at 19.96°, while the diffraction intensity peaks of Chit/PVA−PDL films were found at 20.27 and 27.08°. A broad band of indicator films appeared around at 20°, which revealed a semicrystalline or amorphous structure of Chit/PVA and Chit/PVA−PDL films.…”

Section: Characterization Of Indicator Film 311 Thickness and Physicalmentioning

confidence: 96%

“…The second stage (weight loss of 56.67−63.65%) was found at 140−275 °C, which was attributed to the thermal degradation of Chit. 24 The third and fourth stage of weight loss (275−600 °C) was contributed by the decomposition of PVA and PDL, 34 and the weight loss of films was 86.87−99.32%. The Chit/PVA−PDL indicator films presented the most rapid weight loss at around 208 °C, while the most rapid weight loss of the Chit/PVA film occurred at 232 °C.…”

Section: Characterization Of Indicator Film 311 Thickness and Physicalmentioning

confidence: 99%

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Deep Learning Used with a Colorimetric Sensor Array to Detect Indole for Nondestructive Monitoring of Shrimp Freshness

Zhang,

Mujumdar

et al. 2024

ACS Appl. Mater. Interfaces

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Intelligent colorimetric freshness indicator is a lowcost way to intuitively monitor the freshness of fresh food. A colorimetric strip sensor array was prepared by p-dimethylaminocinnamaldehyde (PDL)-doped poly(vinyl alcohol) (PVA) and chitosan (Chit) for the quantitative analysis of indole, which is an indicator of shrimp freshness. As a result of indole simulation, the array strip turned from faint yellow to pink or mulberry color with the increasing indole concentration, like a progress bar. The indicator film exhibited excellent permeability, mechanical and thermal stability, and color responsiveness to indole, which was attributed to the interactions between PDL and Chit/PVA. Furthermore, the colorimetric strip sensor array provided a good relationship between the indole concentration and the color intensity within a range of 50−350 ppb. The pathogens and spoilage bacteria of shrimp possessed the ability to produce indole, which caused the color changes of the strip sensor array. In the shrimp freshness monitoring experiment, the color-changing progress of the strip sensor array was in agreement with the simulation and could distinguish the shrimp freshness levels. The image classification system based on deep learning were developed, the accuracies of four DCNN algorithms are above 90%, with VGG16 achieving the highest accuracy at 97.89%. Consequently, a "progress bar" strip sensor array has the potential to realize nondestructive, more precise, and commercially available food freshness monitoring using simple visual inspection and intelligent equipment identification.

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Section: Resultsmentioning

confidence: 96%

Section: Characterization Of Indicator Film 311 Thickness and Physicalmentioning

confidence: 96%

Section: Characterization Of Indicator Film 311 Thickness and Physicalmentioning

confidence: 99%

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Deep Learning Used with a Colorimetric Sensor Array to Detect Indole for Nondestructive Monitoring of Shrimp Freshness

Zhang,

Mujumdar

et al. 2024

ACS Appl. Mater. Interfaces

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“…Besides, the abundance of hydroxyl groups on CNC's surface, which can build a structural network of strong hydrogen connections between chitosan and PVA, may lessen the susceptibility of film materials to oxygen molecules. 56 In response to the “tortuous idea,” nanocellulose acts as a barrier that inhibits oxygen molecules from passing through films. When it comes to maintaining the freshness of fruits and vegetables by inhibiting their respiration, a biocomposite film with a lower GTR value is preferable.…”

Section: Resultsmentioning

confidence: 99%

Hemp cellulose nanocrystals for functional chitosan/polyvinyl alcohol-based films for food packaging applications

Bahsaine,

El Allaoui,

Benzeid

et al. 2023

RSC Adv.

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“…Some nanocellulose composite films have been identified by scholars as packaging films for fruits and vegetables, as listed in Table 9. Li et al [138] aligned cellulose nanocrystals (CNCs) and cellulose nanofibrils (CNFs) in polyvinyl alcohol (PVA) to obtain CNC/PVA and CNF/PVA films, and then used an external magnetic field (MF) to ensure effective dispersion. The results showed that the mechanical, barrier, and hydrophobic properties, as well as thermal stability, increased.…”

Section: Fruits and Vegetablesmentioning

confidence: 99%

Nanocellulose Composite Films in Food Packaging Materials: A Review

Xu,

Wu,

et al. 2024

Polymers

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Owing to the environmental pollution caused by petroleum-based packaging materials, there is an imminent need to develop novel food packaging materials. Nanocellulose, which is a one-dimensional structure, has excellent physical and chemical properties, such as renewability, degradability, sound mechanical properties, and good biocompatibility, indicating promising applications in modern industry, particularly in food packaging. This article introduces nanocellulose, followed by its extraction methods and the preparation of relevant composite films. Meanwhile, the performances of nanocellulose composite films in improving the mechanical, barrier (oxygen, water vapor, ultraviolet) and thermal properties of food packaging materials and the development of biodegradable or edible packaging materials in the food industry are elaborated. In addition, the excellent performances of nanocellulose composites for the packaging and preservation of various food categories are outlined. This study provides a theoretical framework for the development and utilization of nanocellulose composite films in the food packaging industry.

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Improved properties of polyvinyl alcohol films blended with aligned nanocellulose particles induced by a magnetic field

Cited by 6 publications

References 50 publications

Deep Learning Used with a Colorimetric Sensor Array to Detect Indole for Nondestructive Monitoring of Shrimp Freshness

Deep Learning Used with a Colorimetric Sensor Array to Detect Indole for Nondestructive Monitoring of Shrimp Freshness

Hemp cellulose nanocrystals for functional chitosan/polyvinyl alcohol-based films for food packaging applications

Nanocellulose Composite Films in Food Packaging Materials: A Review

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