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Polymers
Special Issues
Polymer Circularity Towards Carbon Neutrality
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Polymer Circularity Towards Carbon Neutrality

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Circular and Green Polymer Science".

Deadline for manuscript submissions: 31 January 2025 | Viewed by 1126

Special Issue Editors

Dr. Xiaobin Han

E-Mail Website
Guest Editor
School of Electric Power, Civil Engineering and Architecture, Shanxi University, Taiyuan, China
Interests: polymer rejuvenation; polymer chemistry; polymer-modified asphalt; rejuvenation of rubberized asphalt; aging evaluation of polymer materials; low-carbon smart pavement
Dr. Xiong Xu

E-Mail Website
Guest Editor
School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan, China
Interests: plastic reprocessing; waste rubber; polymer-modified asphalt; rubberized asphalt; performance evaluation; microstructural characterization; mechanism analysis
Special Issues, Collections and Topics in MDPI journals
Dr. Song Xu

E-Mail Website
Guest Editor
College of Civil Engineering, Fuzhou University, Fuzhou, China
Interests: polymer-modified asphalt; recycling of polymer-modified asphalt; functionalization of polymer-modified asphalt; low-carbon technology for asphalt; waste polymer application
Special Issues, Collections and Topics in MDPI journals
Dr. Zhilong Cao

E-Mail Website
Guest Editor
Department of Road and Railway Engineering, Beijing University of Technology, Beijing 100124, China
Interests: green construction materials; pavement material modification and life extension; functional low-carbon pavement
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The circular use of polymers in different engineering areas is important for the sustainable development of resources, which adds value to engineering practices and environmental protections. In fact, these end-of-life polymers can be strategically recycled and reused in various practices for reapplication towards carbon neutrality. It has been widely reported to date that waste polymers can be used for asphalt modifiers, plastic/rubber composite materials, and polymer-fiber-reinforced concrete, in full consideration of performance enhancement, cost-effectiveness, and environmental protection. However, advanced green technologies related to polymer circularity need to be further explored and outputted to widen their scientific applications. Therefore, investigations of this research topic are of great significance and are necessary for circular economics and ecological environments.

Dr. Xiaobin Han
Dr. Xiong Xu
Dr. Song Xu
Dr. Zhilong Cao
Guest Editors

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. Polymers 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 2700 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

  • polymer modified asphalt
  • rejuvenation of waste polymers
  • rejuvenation of polymer-modified asphalt
  • waste plastic/rubber composite materials
  • waste polymer-reinforced concrete
  • advanced test methodologies for recycled polymers
  • novel recycling technologies for polymers
  • performance improvement for waste polymers
  • low-carbon technology for polymer composite application

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Published Papers (1 paper)

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Research

17 pages, 10227 KiB  
Article
Mechanochemical Upcycling of Waste Polypropylene into Warm-Mix Modifier for Asphalt Pavement Incorporating Recycled Concrete Aggregates
by Jingxuan Hu, Xueliang Jiang, Yaming Chu, Song Xu and Xiong Xu
Polymers 2024, 16(17), 2494; https://doi.org/10.3390/polym16172494 - 31 Aug 2024
Viewed by 931
Abstract
To solve the problems on resource utilization and environmental pollution of waste concrete and waste polypropylene (PP) plastics, the recycling of them into asphalt pavement is a feasible approach. Considering the high melting temperature of waste PP, this study adopted a thermal-and-mechanochemical method [...] Read more.
To solve the problems on resource utilization and environmental pollution of waste concrete and waste polypropylene (PP) plastics, the recycling of them into asphalt pavement is a feasible approach. Considering the high melting temperature of waste PP, this study adopted a thermal-and-mechanochemical method to convert waste PP into high-performance warm-mix asphalt modifiers (PPMs) through the hybrid use of dicumyl peroxide (DCP), maleic anhydride (MAH), and epoxidized soybean oil (ESO) for preparing an asphalt mixture (RCAAM) containing recycled concrete aggregate (RCA). For the prepared RCAAM containing PPMs, the mixing temperature was about 30 °C lower than that of the hot-mix RCAAM containing untreated PP. Further, the high-temperature property, low-temperature crack resistance, moisture-induced damage resistance, and fatigue resistance of the RCAAM were characterized. The results indicated that the maximum flexural strain of the RCAAM increased by 7.8~21.4% after using PPMs, while the sectional fractures of the asphalt binder were reduced after damaging at low temperature. The use of ESO in PPMs can promote the cohesion enhancement of the asphalt binder and also improve the high-temperature deformation resistance and fatigue performance of the RCAAM. Notably, the warm-mix epoxidized PPMA mixture worked better close to the hot-mix untreated PPMA mixture, even after the mixing temperature was reduced by 30 °C. Full article
(This article belongs to the Special Issue Polymer Circularity Towards Carbon Neutrality)
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