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Applied Sciences
Special Issues
Advances in Plastic Production, Treatment and Recycling for Circular Economy
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Advances in Plastic Production, Treatment and Recycling for Circular Economy

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Environmental Sciences".

Deadline for manuscript submissions: 20 October 2024 | Viewed by 779

Special Issue Editor

Dr. Tomohiro Tabata

E-Mail Website
Guest Editor
Graduate School of Human Development and Environment, Kobe University, 3-11 Tsurukabuto, Nada-ku, Kobe 657-8501, Japan
Interests: waste management; disaster waste management; renewable energy; fuel and energy poverty; circular economy for plastic
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Achieving a circular economy for plastics requires advanced technologies and a shift from a linear to a circular business model. The circular economy for plastics is highly dependent not only on plastic recycling but also on the elimination of fossil-based plastics through the production of bioplastics and eco-friendly design of plastic products. The automated sorting of plastics with the help of artificial intelligence is another important factor in the circular economy.

This Special Issue is dedicated to the presentation of new ideas, experimental results related to advanced technologies and case study to achieve the circular economy for plastics.

Advanced technologies to achieve a circular economy for plastics as well as the improvement of conventional plastics treatment technologies will be discussed in this Special Issue.

Dr. Tomohiro Tabata
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 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

  • circular economy for plastics
  • plastic waste collection
  • automated plastic sorting technology
  • plastic discrimination
  • plastic treatment and recycling
  • high quality plastic recycling
  • design for plastic recycling
  • bioplastics
  • visualization of environmental burden using digital product passport

Published Papers (1 paper)

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Research

13 pages, 7793 KiB  
Article
Amplification Ratio of a Recycled Plastics-Compliant Mechanism Flexure Hinge
by Tran Minh The Uyen, Pham Son Minh, Van-Thuc Nguyen, Thanh Trung Do, Hai Nguyen Le Dang and Van Thanh Tien Nguyen
Appl. Sci. 2023, 13(23), 12825; https://doi.org/10.3390/app132312825 - 29 Nov 2023
Cited by 1 | Viewed by 606
Abstract
This research focuses on the fabrication of plastic flexure hinges from diverse plastics such as ABS, PP, HDPE, and LDPE. To enhance hinge efficiency, the recycling ratios are also investigated. The amplification ratio of different recycle ratios and plastic types are measured. The [...] Read more.
This research focuses on the fabrication of plastic flexure hinges from diverse plastics such as ABS, PP, HDPE, and LDPE. To enhance hinge efficiency, the recycling ratios are also investigated. The amplification ratio of different recycle ratios and plastic types are measured. The results show that the input and output displacements of all PP, ABS, and HDPE hinges are linear. The presence of recycled plastics has no impact on this basis. The pure PP, ABS, and HDPE flexure hinges achieve the highest amplification ratios of 5.728, 8.249, and 5.668. The addition of recycled plastics reduces the amplification ratio. This decrease in the amplification ratio, however, is small. At a 25% recycle ratio, the PP, ABS, and HDPE flexure hinges have 12%, 13.3%, and 21.7% lower amplification ratios than the pure plastic hinges. Furthermore, the utilization of recycled plastics may lessen the need for new plastic made from raw materials. With the PP flexure hinge, a maximum input value of 157 µm could result in an output value of 886 µm. At a maximum input value of 115 µm, the ABS flexure hinge could achieve an output value of 833 µm. Finally, a maximum input value of 175 µm might result in an output value of 857 µm when using the HDPE flexure hinge. The average amplification ratio values for all recycling ratios for PP, ABS, and HDPE flexure hinges are, respectively, 5.35, 7.60, and 5.02. The ABS flexure hinge frequently outperforms the PP and HDPE flexure hinge in terms of amplification ratios. Among these plastics, HDPE flexure hinges have the lowest amplification ratio. In general, increasing the thermoplastic polyurethane (TPU) content of the LDPE/TPU blend increases the amplification ratio. The cause could be the TPU’s high compatibility with the LDPE polymer. The LDPE/TPU blend hinge offers a broader range of the amplification ratio of 2.85–10.504 than the PP, ABS, and HDPE flexure hinges. It is interesting that changing the blend percentage has a much greater impact on the amplification ratio than changing the recycling ratio. The findings broaden the range of applications for plastic flexure hinges by identifying optimal plastic types. The impact of the hinge shape on the performance of the injected plastic flexure hinge might be studied in further research. Full article
(This article belongs to the Special Issue Advances in Plastic Production, Treatment and Recycling for Circular Economy)
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