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Design, Preparation and Molding of Lightweight and Environmentally Friendly Polymer Composite Materials

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

Deadline for manuscript submissions: 31 May 2026 | Viewed by 151

Special Issue Editors

1. State Key Laboratory of Light Superalloys, Wuhan University of Technology, Wuhan 430070, China
2. Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan 430070, China
3. Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan University of Technology, Wuhan 430070, China
4. Hubei Research Center for New Energy & Intelligent Connected Vehicle, Wuhan University of Technology, Wuhan 430070, China
Interests: polymer foaming technology; plant fiber-reinforced composites; advanced forming technology; automobile recycling technology; life cycle assessment

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Guest Editor
1. State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
2. Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory, Chaozhou 521000, China
3. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
Interests: composites; advanced materials; polymer composites; nanomaterial synthesis; mechanical behavior of materials; metallurgical engineering; material processing; materials; material characterization; mechanical properties; microstructure

Special Issue Information

Dear Colleagues,

As the global manufacturing industry moves toward lightweighting, greening, and sustainable development, lightweight, environmentally friendly polymer composites are increasingly being used in the automotive, energy, and environmental sectors. Advanced material design methods, preparation processes, and molding technologies offer new avenues for the structural optimization, performance control, and widespread application of such composites.

This Special Issue aims to provide a platform for scholars, engineers, and industry experts to disseminate their research findings, technological innovations, and challenges in the design, preparation, and molding of lightweight, environmentally friendly polymer composites. Through theoretical research, experimental exploration, and industry perspectives, this issue will explore various aspects of these composites, including material design methods, preparation processes, molding technologies, environmental assessments, and economic feasibility. Through knowledge exchange and technology sharing, this issue will promote discussion on this topic and facilitate the transition to a more sustainable and circular economy. This Special Issue will serve as an indispensable resource, fostering the deep integration of polymer science, materials engineering, and green manufacturing, and providing new ideas and solutions for the design and application of lightweight, high-performance, and sustainable polymer composites.

Dr. Wei Guo
Prof. Dr. Guoqiang Luo
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 250 words) can be sent to the Editorial Office for assessment.

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

  • lightweight and environmentally friendly
  • polymer composites
  • biomass materials
  • material design
  • material preparation
  • molding process
  • life cycle assessment
  • automotive applications

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Published Papers (1 paper)

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Research

18 pages, 6173 KB  
Article
Performance Degradation Mechanism of Hemp Fiber-Reinforced Polypropylene Composites Under Accelerated Aging
by Wei Guo, Xiaorui Liu, Feng Zhao, Huayao Huang and Bo Li
Polymers 2025, 17(24), 3309; https://doi.org/10.3390/polym17243309 - 14 Dec 2025
Viewed by 43
Abstract
In the context of increasing resource scarcity and environmental concerns, the development of green composite materials is essential for promoting sustainability in the automotive industry. However, poor interfacial compatibility between plant fibers and polypropylene (PP), as well as the performance deterioration under complex [...] Read more.
In the context of increasing resource scarcity and environmental concerns, the development of green composite materials is essential for promoting sustainability in the automotive industry. However, poor interfacial compatibility between plant fibers and polypropylene (PP), as well as the performance deterioration under complex environmental aging conditions, severely limits their engineering applications. In this study, a synergistic interfacial modification strategy combining alkali treatment of hemp fibers (HFs) with polypropylene grafted maleic anhydride (PP-g-MAH) was employed to enhance fiber–matrix interaction. Hemp fiber-reinforced polypropylene composites (HFRPs) with varying fiber contents (7.5–30 wt%) were fabricated via injection molding. Accelerated aging tests were conducted on the compatibilized HFRPs for up to 2400 h under ultraviolet–thermal–moisture coupled conditions, in accordance with the SAE J2527 standard. The evolution of surface color, mechanical properties, chemical structure, and microstructure was systematically characterized. After aging, surface whitening of the composites was observed. Tensile strength and impact strength decreased by 9.57–22.12% and 38.68–46.03%, respectively, while flexural strength remained relatively stable due to the supporting effect of the fiber skeleton. The aging of compatibilized HFRPs follows an outside-in progressive degradation mechanism, characterized by a stepwise cascade of surface oxidation, crack propagation, moisture ingress, interfacial degradation, and mechanical performance deterioration. These findings offer valuable insights into the long-term durability of natural fiber-reinforced thermoplastic composites and provide theoretical and practical guidance for their structural design and application in demanding service environments. Full article
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