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Green & Intelligent Printing or Packaging Materials in Light Industry

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Composites".

Deadline for manuscript submissions: closed (20 May 2023) | Viewed by 5677

Special Issue Editors

Faculty of Printing, Packaging Engineering and Digital Media Technology, Xi'an University of Technology, Xi'an, China
Interests: sensors; conductive material; printed electronics; intelligent packaging
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Guest Editor Assistant
School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology, Xi'an, China
Interests: sensors; conductive material; printed electronics; intelligent packaging

Special Issue Information

Dear Colleagues,

Intelligent packaging has great potential to improve the safety, quality and traceability of products and increase convenience for consumers. Flexible electronic sensors, which play a key role in intelligent packaging, have seen major advancements over the last few years due to their excellent conductivity, portable and facile fabrication. Owing to the poor durability and stability of sensors, their widespread application is limited. Sensors based on two-dimensional conductive materials are sensitive to strain changes in tension or pressure, leading to changes in their conductivity or resistance when external pressure is applied. Compared with traditional sensors based on metals, flexible electronic materials have excellent tensile properties. With the development of flexible electronic technology, microelectronic devices have evolved from rigid to wearable, with flexible and integrable patterns. Currently, there are challenges related to the design of sensors that are stable in practice yet susceptible to mechanical attack during use. Sensors intended for specific applications must not only perform different functions but must also meet acceptable standards of durability during use and exhibit interfacial stability.

Various biomimetic, functional and conductive materials are used in intelligent packaging. In recent years, ensuring the safety of packaging contents in the transportation process has attracted extensive attention, especially for items with significant value, which presents a significant challenge. Many technologies have been applied in packaging, such as radio frequency identification (RFID) technology, infrared induction technology and global positioning systems (GPSs). In the coming years, an increase in functional material-based sensors is expected, as well as increased market demand for flexible sensors due to new possibilities in intelligent packaging can be realized by printing conductive ink directly on packaging products, and smart packaging could be achieved through integrating sensors into packaging via structural design.

In this Special Issue, we aim to present a contemporary overview of recent developments in the fields of green printing, printed electronics and intelligent packaging. Reviews, full papers and short communications covering current trends in the expansion of polymeric material applications are all welcome.

The scope of this issue includes, but is not limited to, the following topics:

  • Green preparation of environmentally friendly materials in printing and packaging;
  • Recycling of waste packaging materials, such as plastic, metal, paper, etc.;
  • Functional materials, including electric, optical, thermal resistance, magnetic, hydrophobic materials, etc.;
  • The green fabrication technologies for preparation of smart devices;
  • Reusing natural materials, such as lignin, cellulose, protein, etc.;
  • Calculation and simulation technologies for material and device preparation.

Dr. Xing Zhou
Guest Editor

Dr. Dong Wang
Guest Editor Assistant

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • environmentally friendly materials
  • green fabrication
  • recycling
  • multiple functions
  • simulation
  • printing and packaging

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Published Papers (2 papers)

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Research

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15 pages, 2772 KiB  
Article
The Mechanical Behavior and Enhancement Mechanism of Short Carbon Fiber Reinforced AFS Interface
by Chang Yan, Jiaxu Cai, Kun Xiang, Jinfeng Zhao, Wanqing Lei and Changqing Fang
Materials 2022, 15(24), 9012; https://doi.org/10.3390/ma15249012 - 16 Dec 2022
Cited by 1 | Viewed by 1503
Abstract
The aluminum foam sandwich (AFS), which perfectly combines the excellent merits of an aluminum foam core and face sheet materials, has extensive and reliable applications in many fields, such as aerospace, military equipment, transportation, and so on. Adhesive bonding is one of the [...] Read more.
The aluminum foam sandwich (AFS), which perfectly combines the excellent merits of an aluminum foam core and face sheet materials, has extensive and reliable applications in many fields, such as aerospace, military equipment, transportation, and so on. Adhesive bonding is one of the most widely used methods to produce AFS due to its general applicability, simple process, and low cost, however, the bonding interface is known as the weak link and may cause a serious accident. To overcome the shortcomings of a bonded AFS interface, short carbon fiber as a reinforcement phase was introduced to epoxy resin to reinforce the interface adhesion strength of AFS. Single lap shear tests and three-point bending tests were conducted to study the mechanical behavior of the reinforced interface and AFS, respectively. The failure mechanism was studied through a macro- and microanalysis. The result showed that after the reinforcement of carbon fiber, the tangential shear strength of the interface increased by 73.65%. The effective displacement of AFS prepared by the reinforced epoxy resin is 125.95% more than the AFS prepared by the unreinforced epoxy resin. The flexure behavior of the reinforced AFS can be compared with AFS made through a metallurgical method. Three categories of reinforcement mechanisms were discovered: (a) the pull off and pull mechanism: when the modified carbon fiber performed as the bridge, the bonding strength improved because of the pull off and pull out of fibers; (b) adhesion effect: the carbon fiber gathered in the hole edge resulted in epoxy resins being gathered in there too, which increased the effective bonding area of the interface; (c) mechanical self-locking effect: the carbon fiber enhanced the adhesive filling performance of aluminum foam holes, which improved the mechanical self-locking effect of the bonding interface. Full article
(This article belongs to the Special Issue Green & Intelligent Printing or Packaging Materials in Light Industry)
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Review

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13 pages, 1488 KiB  
Review
MOF-Based Active Packaging Materials for Extending Post-Harvest Shelf-Life of Fruits and Vegetables
by Yabo Fu, Dan Yang, Yiyang Chen, Jiazi Shi, Xinlin Zhang, Yuwei Hao, Zhipeng Zhang, Yunjin Sun and Jingyi Zhang
Materials 2023, 16(9), 3406; https://doi.org/10.3390/ma16093406 - 27 Apr 2023
Cited by 8 | Viewed by 3887
Abstract
Active packaging that can extend the shelf-life of fresh fruits and vegetables after picking can assure food quality and avoid food waste. Such packaging can prevent the growth of microbial and bacterial pathogens or delay the production of ethylene, which accelerates the ripening [...] Read more.
Active packaging that can extend the shelf-life of fresh fruits and vegetables after picking can assure food quality and avoid food waste. Such packaging can prevent the growth of microbial and bacterial pathogens or delay the production of ethylene, which accelerates the ripening of fruits and vegetables after harvesting. Proposed technologies include packaging that enables the degradation of ethylene, modified atmosphere packaging, and bioactive packaging. Packaging that can efficiently adsorb/desorb ethylene, and thus control its concentration, is particularly promising. However, there are still large challenges around toxicity, low selectivity, and consumer acceptability. Metal–organic framework (MOF) materials are porous, have a specific surface area, and have excellent gas adsorption/desorption performance. They can encapsulate and release ethylene and are thus good candidates for use in ethylene-adjusting packaging. This review focuses on MOF-based active-packaging materials and their applications in post-harvest fruit and vegetable packaging. The fabrication and characterization of MOF-based materials and the ethylene adsorption/desorption mechanism of MOF-based packaging and its role in fruit and vegetable preservation are described. The design of MOF-based packaging and its applications are reviewed. Finally, the potential future uses of MOF-based active materials in fresh food packaging are considered. Full article
(This article belongs to the Special Issue Green & Intelligent Printing or Packaging Materials in Light Industry)
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