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Recent Advances in Polymer and Polymer Composites
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Recent Advances in Polymer and Polymer Composites

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Macromolecules".

Deadline for manuscript submissions: closed (31 July 2023) | Viewed by 1973

Special Issue Editor

Dr. Volkan Filiz

E-Mail Website
Guest Editor
Institute of Membrane Research, Helmholtz-Zentrum Hereon, Max-Planck-Str. 1, 21502 Geesthacht, Germany
Interests: microporous polymers; PAN membranes; synthesis of new monomers; tailor-made polymers for membrane applications in gas- and liquid-phase separation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Polymers and polymer composite materials are engineering materials that are widely used in all walks of life. They are the result of a mixture of one or more dissimilar kinds of fillers in a common polymer matrix. They have unique intrinsic properties, such as flexibility, low cost, easy processing, and excellent physicochemical properties. A variety of polymer composite materials have been developed using various strategies.

This Special Issue aims to collect original full papers and/or reviews covering all aspects related to the preparation and processing of polymer composites. Topics of interest may include, but are not limited to, polymer films, polymeric nanoparticles, conducting polymers, supramolecular polymers, biomimetic polymers, bio-based resin systems, and bio-based composite materials.

Dr. Volkan Filiz
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.

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. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. There is an Article Processing Charge (APC) for publication in this open access journal. For details about the APC please see here. 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 films

  • polymeric nanoparticles
  • conducting polymers
  • supramolecular polymers
  • biomimetic polymer
  • bio-based resin systems
  • bio-based composite materials

Published Papers (1 paper)

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Research

26 pages, 10695 KiB  
Article
Balancing the Strength–Impact Relationship and Other Key Properties in Polypropylene Copolymer–Natural CaSO4 (Anhydrite)-Filled Composites
by Marius Murariu, Fouad Laoutid, Yoann Paint, Oltea Murariu, Jean-Marie Raquez and Philippe Dubois
Int. J. Mol. Sci. 2023, 24(16), 12659; https://doi.org/10.3390/ijms241612659 - 10 Aug 2023
Viewed by 1648
Abstract
To develop novel mineral-filled composites and assess their enhanced properties (stiffness, a good balance between mechanical strength and impact resistance, greater temperature stability), a high-impact polypropylene copolymer (PPc) matrix containing an elastomeric discrete phase was melt mixed with natural CaSO4 β-anhydrite II [...] Read more.
To develop novel mineral-filled composites and assess their enhanced properties (stiffness, a good balance between mechanical strength and impact resistance, greater temperature stability), a high-impact polypropylene copolymer (PPc) matrix containing an elastomeric discrete phase was melt mixed with natural CaSO4 β-anhydrite II (AII) produced from gypsum rocks. First, in a prior investigation, the PPc composites filled with AII (without any modification) displayed enhanced stiffness, which is correlated with the relative content of the filler. The tensile and impact strengths dramatically decreased, especially at high filling (40 wt.%). Therefore, two key methods were considered to tune up their properties: (a) the ionomeric modification of PPc composites by reactive extrusion (REx) with zinc diacrylate (ZA), and (b) the melt mixing of PPc with AII surface modified with ethylenebis(stearamide) (EBS), which is a multifunctional processing/dispersant additive. The properties of composites produced with twin-screw extruders (TSEs) were deeply assessed in terms of morphology, mechanical, and thermal performance, including characterizations under dynamic mechanical solicitations at low and high temperatures. Two categories of products with distinct properties are obtained. The ionomeric modification by Rex (evaluated by FTIR) led to composites characterized by remarkable thermal stability, a higher temperature of crystallization, stronger interfacial interactions, and therefore noticeable mechanical properties (high tensile strength (i.e., 28 MPa), increased stiffness, moderate (3.3 kJ/m2) to good (5.0 kJ/m2) impact resistance) as well as advanced heat deflection temperature (HDT). On the other hand, the surface modification of AII with EBS facilitated the dispersion and debonding of microparticles, leading to composites revealing improved ductility (strain at break from 50% to 260%) and enhanced impact properties (4.3–5.3 kJ/m2), even at high filling. Characterized by notable mechanical and thermal performances, high whiteness, and a good processing ability, these new PPc–AII composites may be tailored to meet the requirements of end-use applications, ranging from packaging to automotive components. Full article
(This article belongs to the Special Issue Recent Advances in Polymer and Polymer Composites)
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