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Sustainable Materials for Building Envelopes

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Sustainable Materials".

Deadline for manuscript submissions: 30 November 2026 | Viewed by 1537

Special Issue Editors


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Guest Editor
Department of Engineering, University of Perugia, 06125 Perugia, Italy
Interests: thermal, optical, and acoustic properties of opaque and transparent building materials; transparent insulating materials (TIMs); nano-materials; heat transfer; circular economy; waste materials; environmental sustainability; building energy simulation; life cycle assessment; thermal, lighting, and acoustic comfort; environmental noise analysis; renewable energy
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Guest Editor
Department of International Human and Social Sciences, Perugia Foreigners’ University, 06123 Perugia, Italy
Interests: radiative cooling; passive cooling; urban overheating; urban heat island mitigation; adaptive materials; energy efficiency; human comfort
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Building envelopes play a key role in ensuring energy efficiency, environmental performance, and indoor comfort. In the context of growing sustainability demands, materials used for building envelopes must not only guarantee thermal and acoustic insulation but also demonstrate low environmental impact, efficient use of resources, and sustainable end-of-life management.

Driven by the goals of Nearly Zero Energy Buildings (nZEBs), emission reduction, and climate change mitigation, recent research has focused on innovative and sustainable materials—such as bio-based, recycled, and multifunctional composites—capable of improving envelope performance across different climates while reducing embodied carbon and enhancing durability.

This Special Issue is dedicated to sustainable materials for building envelopes, considering their thermal, acoustic, hygrothermal, environmental, and structural characteristics. It aims to gather studies on material development, performance assessment, and practical application in both architectural and civil engineering contexts, promoting circularity and innovation in construction.

Topics of interest include the evaluation of thermal and acoustic properties, durability, life cycle assessment (LCA), environmental impact, and the use of natural, recycled, or bio-based resources. We also welcome contributions about multifunctional and adaptive materials, experimental and numerical energy performance assessments, and case studies in real or simulated buildings. Furthermore, we encourage contributions addressing civil engineering aspects, like structural integration or large-scale applications.

While much has been published on energy-efficient materials, this Special Issue aims to offer an integrated perspective that connects material innovation with building envelope performance, highlighting comprehensive and interdisciplinary approaches.

Review papers should provide a thorough overview of the current state of the art, while original research contributions should present innovative methodologies, materials, or applications relevant to sustainable building envelopes.

All submissions will undergo a rigorous peer-review process to ensure high-quality scientific contributions and timely dissemination of research findings.

Dr. Francesca Merli
Dr. Chiara Chiatti
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. Sustainability 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

  • sustainable materials
  • building envelope
  • thermal insulation
  • acoustic performance
  • life cycle assessment (LCA)
  • bio-based materials
  • recycled materials
  • hygrothermal properties
  • energy efficiency
  • civil engineering applications

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Published Papers (2 papers)

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Research

22 pages, 2045 KB  
Article
Upcycled PVC-Based Metamaterials for Low-Frequency Sound Absorption: Experimental and Analytical Investigation of Honeycomb-Enhanced Architectures
by Giuseppe Ciaburro and Virginia Puyana-Romero
Sustainability 2026, 18(5), 2342; https://doi.org/10.3390/su18052342 - 28 Feb 2026
Viewed by 387
Abstract
The treatment and management of waste in industrial processes remain a challenge, especially in material-intensive industries. In an attempt to mitigate this issue, sustainable architectural solutions focus extensively on the reuse of post-consumer waste in a bid to minimize environmental degradation. In this [...] Read more.
The treatment and management of waste in industrial processes remain a challenge, especially in material-intensive industries. In an attempt to mitigate this issue, sustainable architectural solutions focus extensively on the reuse of post-consumer waste in a bid to minimize environmental degradation. In this work, we propose a new acoustic metamaterial composed of three layers of reclaimed PVC diaphragms and a structured honeycomb core. The diaphragms were implemented on a hard frame in a manner that incorporates air gaps between layers and were tested using a portable impedance tube for setups including honeycomb panels behind diaphragms, in addition to setups including only air gaps, compared to diaphragms alone. The experimental and simulated results, using a transfer matrix approach, show a significantly improved low-frequency sound absorption performance within the 250–600 Hz band. Full article
(This article belongs to the Special Issue Sustainable Materials for Building Envelopes)
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17 pages, 2574 KB  
Article
Structural and Chemical Profiling of Hemp Hurds for Sustainable Bioproducts Within a Circular Economy Framework
by Ziningi Rosebud Myeni, Farai Dziike, Tshwafo Elias Motaung and Nirmala Deenadayalu
Sustainability 2026, 18(5), 2197; https://doi.org/10.3390/su18052197 - 25 Feb 2026
Viewed by 661
Abstract
Lignocellulose biomass (LB) has gained interest as a second-generation renewable feedstock for producing bio-based products within a circular economy framework. Hemp hurds, a byproduct of industrial hemp processing, are one of the LB feedstocks that have gained attraction. This study examines the physicochemical [...] Read more.
Lignocellulose biomass (LB) has gained interest as a second-generation renewable feedstock for producing bio-based products within a circular economy framework. Hemp hurds, a byproduct of industrial hemp processing, are one of the LB feedstocks that have gained attraction. This study examines the physicochemical properties of hemp hurds to evaluate their suitability as substrates for bioproduct synthesis. The chemical analysis of hemp hurds showed that the polysaccharide content is 53.4%, lignin is 20.8%, extractives are 15%, and ash is 4.35%. The moisture content is 6.34%, and the density is 1.0016 g/mL, indicating low porosity and a small surface area, which limits enzyme access to cellulose. Structural analysis using X-ray diffraction (XRD) indicated a crystallinity index of 40.20%, and the Fourier Transform Infrared Spectrophotometer (FTIR) confirmed the characteristic peaks representing cellulose, hemicellulose, and lignin at 3332 cm−1, 1734 cm−1, and 1510 cm−1, respectively. The Scanning Electron Microscope (SEM) revealed a tightly packed surface with smooth, low porosity, whereas the Thermogravimetric Analyser (TGA) indicated decomposition in phases for hemicellulose, cellulose, and lignin. The structural and chemical findings of hemp hurds characterisation suggest that they are a suitable raw material for producing various bio-based materials. Full article
(This article belongs to the Special Issue Sustainable Materials for Building Envelopes)
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