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Special Issue "Innovative Flame Retardants"

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Materials Chemistry".

Deadline for manuscript submissions: 30 September 2019

Special Issue Editors

Guest Editor
Dr. Rodolphe Sonnier

IMT Mines Ales, Centre des Matériaux des Mines d’Alès (C2MA), 6 avenue de Clavières, 30319 Alès cedex, France
Website | E-Mail
Interests: flame retardancy; fire behavior; biobased flame retardants; radiation-modification of polymers
Guest Editor
Dr. Laurent Ferry

IMT Mines Ales, Centre des Matériaux des Mines d’Alès (C2MA), 6 avenue de Clavières, 30319 Alès cedex, France
Website | E-Mail
Interests: flame retardancy of polymers; thermal degradation; biobased flame retardant; polymer aging
Guest Editor
Dr. Henri Vahabi

University of Lorraine, M.O.P.S. Laboratory, 2 rue E. Belin- 57070 Metz, France
Website | E-Mail
Interests: flame retardancy; thermal degradation; biobased flame retardants; biopolymers; aging of flame retardant and polymers; fiber-reinforced composites

Special Issue Information

Dear Colleagues,

The research focuses more and more on the development of biobased materials to attain the requirements of sustainability. Developing biosourced materials in the future includes polymers as well as additives. Among these additives, flame retardants are the most important market. Bioresources are numerous and provide many opportunities to develop innovative flame retardants. Solutions based on carbohydrates, polyphenols, lipids or proteins are currently investigated.

To be commercially successful, biobased flame retardants  must obviously be as efficient as oil-based ones. However, cost may also be a major drawback. Indeed, the development of biobased flame retardants often needs various extraction, purification and functionalization steps. A solution to be competitive may be to provide multifunctionalities. For instance, combining flame retardancy with anti-ageing, plasticizing, crosslinking, conductive properties and so on would be highly desirable.

Alongside biobased ones, there are other innovative flame retardants based on various elements or from different classes of materials which offer new opportunities.

This special issue aims to gather high-quality papers about innovative flame retardants. Especially  all aspects of biobased flame retardants are considered, i.e. their extraction, synthesis and functionalization as well as the assessment of their fire retardancy properties and their environmental impact. Papers on other innovative flame retardants are also welcomed. Multifunctional additives combining several properties (including flame retardancy) will be privileged.

Dr. Rodolphe Sonnier
Pr. Laurent Ferry
Dr. Henri Vahabi
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 papers will be 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. Molecules 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 1800 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

  • Biobased flame retardants
  • Flame retardancy
  • Multifunctional flame retardants
  • Phosphorus functionalization
  • Lignin
  • Biophenol
  • Carbohydrate
  • Plant-based resources
  • Resources from sea
  • Protein

Published Papers (1 paper)

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Research

Open AccessArticle The Efficiency of Biobased Carbonization Agent and Intumescent Flame Retardant on Flame Retardancy of Biopolymer Composites and Investigation of their Melt-Spinnability
Molecules 2019, 24(8), 1513; https://doi.org/10.3390/molecules24081513
Received: 25 March 2019 / Revised: 15 April 2019 / Accepted: 17 April 2019 / Published: 17 April 2019
PDF Full-text (1693 KB)
Abstract
The objective of this study is to assess the efficiency of biobased carbonization agent in intumescent formulations (IFRs) to examine the flame retardant properties of polylactic acid (PLA) composites and to investigate their melt-spinnability. We used phosphorous-based halogen free flame retardant (FR) and [...] Read more.
The objective of this study is to assess the efficiency of biobased carbonization agent in intumescent formulations (IFRs) to examine the flame retardant properties of polylactic acid (PLA) composites and to investigate their melt-spinnability. We used phosphorous-based halogen free flame retardant (FR) and kraft lignin (KL) as bio-based carbonization agent. After melt compounding and molding into sheets by hot pressing various fire related characteristics of IFR composites were inspected and were characterized by different characterization methods. It was fascinating to discover that the introduction of 5−20 wt% FR increased the limiting oxygen index (LOI) of PLA composites from 20.1% to 23.2−33.5%. The addition of KL with content of 3−5 wt% further increased the LOI up to 36.6−37.8% and also endowed PLA/FR/KL composites with improved anti-dripping properties. Cone calorimetry revealed a 50% reduction in the peak heat release rate of the IFR composites in comparison to 100% PLA and confirmed the development of an intumescent char structure containing residue up to 40%. For comparative study, IFR composites containing pentaerythritol (PER) as a carbonization agent were also prepared and their FR properties were compared. IFR composites were melt spun and mechanical properties of multifilament yarns were tested. The analysis of char residues by energy dispersive X-ray spectrometry (EDS) and SEM images confirmed that PLA/FR/KL composites developed a thicker and more homogeneous char layer with better flame retardant properties confirming that the fire properties of PLA can be enhanced by using KL as a carbonization agent. Full article
(This article belongs to the Special Issue Innovative Flame Retardants)
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