Recent Advances in Crosslinking of Polymers

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".

Deadline for manuscript submissions: closed (20 March 2022) | Viewed by 4541

Special Issue Editors


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Guest Editor
Łukasiewicz Research Network-Institute for Engineering of Polymer Materials and Dyes, Maria Skłodowska-Curie 55, 87-100 Toruń, Poland
Interests: polymer materials; polymer chemistry; polymer processing; modification and research of surface; films activation
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Łukasiewicz Research Network - Institute for Engineering of Polymer Materials and Dyes, Maria Skłodowska-Curie 55, 87-100 Toruń, Poland
Interests: biodegradable materials; polymer materials; testing of polymer materials; material identification
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The problems connected with the improvement of the physicochemical and functional properties of polymer materials, performed by crosslinking of these materials, are interesting from both a cognitive and utilization aspect. During the crosslinking of conventional, engineering, specialty, biodegradable, and other polymers, various complex phenomena can occur. They are a direct result of the behavior of the polymer upon crosslinking. Furthermore, it should be noted that the complexity of the phenomena is greater in the case of composites or polymer blends, where the individual components may interact with the crosslinking factor in different ways.

This Special Issue is dedicated to all types of crosslinking of polymeric materials. It refers to radiation treatment using gamma or electron radiation, as well as chemical crosslinking using different crosslinking agents such as peroxides or promoters. The presentation of the most significant issues associated with the abovementioned research topics as well as the important trends in this area are highly sought after. Reviews, full papers, and short communications focused on new achievements in this area are expected.

Dr. Rafal Malinowski
Dr. Aneta Raszkowska – Kaczor
Guest Editors

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Keywords

  • irradiation
  • radiation treatment
  • crosslinking
  • degradation
  • crosslinking agents
  • polymer modification

Published Papers (2 papers)

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Research

14 pages, 3107 KiB  
Article
The Structure and Mechanical Properties of Hemp Fibers-Reinforced Poly(ε-Caprolactone) Composites Modified by Electron Beam Irradiation
by Rafał Malinowski, Aneta Raszkowska-Kaczor, Krzysztof Moraczewski, Wojciech Głuszewski, Volodymyr Krasinskyi and Lauren Wedderburn
Appl. Sci. 2021, 11(12), 5317; https://0-doi-org.brum.beds.ac.uk/10.3390/app11125317 - 08 Jun 2021
Cited by 9 | Viewed by 2015
Abstract
The need for the development of new biodegradable materials and modification of the properties the current ones possess has essentially increased in recent years. The aim of this study was the comparison of changes occurring in poly(ε-caprolactone) (PCL) due to its modification by [...] Read more.
The need for the development of new biodegradable materials and modification of the properties the current ones possess has essentially increased in recent years. The aim of this study was the comparison of changes occurring in poly(ε-caprolactone) (PCL) due to its modification by high-energy electron beam derived from a linear electron accelerator, as well as the addition of natural fibers in the form of cut hemp fibers. Changes to the fibers structure in the obtained composites and the geometrical surface structure of sample fractures with the use of scanning electron microscopy were investigated. Moreover, the mechanical properties were examined, including tensile strength, elongation at break, flexural modulus and impact strength of the modified PCL. It was found that PCL, modified with hemp fibers and/or electron radiation, exhibited enhanced flexural modulus but the elongation at break and impact strength decreased. Depending on the electron radiation dose and the hemp fibers content, tensile strength decreased or increased. It was also found that hemp fibers caused greater changes to the mechanical properties of PCL than electron radiation. The prepared composites exhibited uniform distribution of the dispersed phase in the polymer matrix and adequate adhesion at the interface between the two components. Full article
(This article belongs to the Special Issue Recent Advances in Crosslinking of Polymers)
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14 pages, 6486 KiB  
Article
Development of Kraft Lignin Chemically Modified as a Novel Crosslinking Agent for the Synthesis of Active Hydrogels
by Diana Rico-García, Luis Guillermo Guerrero-Ramírez, Leonardo Ramses Cajero-Zul, Euologio Orozco-Guareño, Edgar Benjamin Figueroa-Ochoa, Ramon Alejandro Gutiérrez-Saucedo, Leyre Perez-Alvarez, Jose Luis Vilas-Vilela and Saira Lizette Hernandez-Olmos
Appl. Sci. 2021, 11(9), 4012; https://0-doi-org.brum.beds.ac.uk/10.3390/app11094012 - 28 Apr 2021
Cited by 5 | Viewed by 1831
Abstract
In this research a chemical modification of kraft lignin was carried out using a basic nucleophilic substitution reaction (NSA) in order to functionalize it as a novel crosslinking agent for the synthesis of active hydrogels. The chemical modification success of the [...] Read more.
In this research a chemical modification of kraft lignin was carried out using a basic nucleophilic substitution reaction (NSA) in order to functionalize it as a novel crosslinking agent for the synthesis of active hydrogels. The chemical modification success of the synthesized crosslinker was demonstrated by using several techniques such as volumetry probes, FTIR, 1H-NMR and DSC. Thus, the obtained materials were employed during the synthesis of acrylic acid-based hydrogels, due to its high-water absorption capacity to evaluate their retention potential of heavy metal ions. Characterization of the active hydrogels were performed by FTIR and SEM, showing the specific signals corresponding to the base monomers into the polymer skeleton and the efficiency of modified kraft lignin as a novel crosslinking agent. Additionally, to demonstrate the potential use of these hydrogels in wastewater treatment, metal ions adsorption experiments were conducted, showing adsorption percentages higher than 90% and 80% for Pb2+ and Cu2+, respectively. Full article
(This article belongs to the Special Issue Recent Advances in Crosslinking of Polymers)
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