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Research on Recycling/Reuse of Polymers and Composites

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

Deadline for manuscript submissions: 20 August 2025 | Viewed by 684

Special Issue Editor


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Guest Editor
Manufacturing Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
Interests: sustainability; additive manufacturing; composites recycling; plastics recycling; decarbonization; waste reduction

Special Issue Information

Dear Colleagues,

Additive manufacturing has enabled the production of previously unseen and complex geometries for functional parts without the need for special tools, devices, and/or jigs. Additive manufacturing through material extrusion is currently available at build volumes ranging from less than 1 m3 to more than 90 m3. Although often reported as a green manufacturing process, material extrusion printing generates waste at several points. These include during printing where material is purged, when prints fail and cannot be recovered, during machining of prints to their final shape, at the end-of-life of a print, and at many other stages. This Special Issue seeks submissions related to projects and technologies that seek to minimize the waste generated from additive manufacturing by recycling end-of-life material. Special consideration will be given to projects that seek to derive value from waste and re-integrate it back into new material systems for re-manufacturing. Projects that quantify environmental impacts and the costs of existing recycling technologies will also be considered.

Dr. Matthew Korey
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.

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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

  • sustainability
  • additive manufacturing
  • composites recycling
  • plastics recycling
  • decarbonization
  • waste reduction

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Published Papers (1 paper)

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Research

27 pages, 6448 KiB  
Article
Valorization of Olive Tree Pruning and By-Products from the Truck Industry in the Manufacture of Low-Environmental-Impact Particleboard
by Juan José Valenzuela Expósito, Elena Picazo Camilo, Griselda Elisabeth Perea Toledo and Francisco Antonio Corpas Iglesias
Materials 2025, 18(14), 3258; https://doi.org/10.3390/ma18143258 - 10 Jul 2025
Viewed by 369
Abstract
This study presents the development of particleboards made from olive tree pruning (OTP) residues and truck industry by-products (RCM), using PUR resin as a binder. Five formulations with different OTP/RCM ratios were designed and physical, thermal, mechanical, chemical and microstructural properties were evaluated. [...] Read more.
This study presents the development of particleboards made from olive tree pruning (OTP) residues and truck industry by-products (RCM), using PUR resin as a binder. Five formulations with different OTP/RCM ratios were designed and physical, thermal, mechanical, chemical and microstructural properties were evaluated. The results showed that increasing the RCM content improves the dimensional stability, reduces water absorption and swelling and decreases thermal conductivity, reaching 0.061 W/mK. At the mechanical level, MOR, MOE and IB values of 7.11, 630 and 0.134 MPa, respectively, were obtained. A higher OTP content allows a reduction in the density of the particleboard (752.67 kg/m3) due to the granulometry of the material. FTIR and SEM analyses confirmed the good integration of the materials with the resin, highlighting a lower porosity and higher compaction in formulations with a high RCM content. These results demonstrate that the combination of agricultural and industrial by-products is feasible to manufacture a sustainable particleboard with customizable properties, promoting the circular economy and reducing the dependence on virgin raw materials in the construction sector. Full article
(This article belongs to the Special Issue Research on Recycling/Reuse of Polymers and Composites)
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