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Recent Advances in Elastomer Materials
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Recent Advances in Elastomer Materials

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Smart and Functional Polymers".

Deadline for manuscript submissions: closed (20 November 2023) | Viewed by 7906

Special Issue Editor

Dr. Hany Hassanin

E-Mail Website
Guest Editor
School of Engineering, University of Liverpool, Liverpool, UK
Interests: topics related to elastomers; additive manufacturing of polymers; composite materials; 3D printing; 4D printing, and mechanical properties and design
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Elastomers are a special class of polymers with a high degree of flexibility and viscoelasticity, making them popular materials in various industries. The use of elastomer composites and nanocomposites is highly interesting in applications where improved mechanical properties are required. The high elastic recovery and excellent fatigue resistance have recently generated significant interest in many industries such as oil and gas, automotive, robotics, medical, agricultural, and many others. The dielectric properties of elastomers made them smart material that produced large strains, which made them able to transform electric energy into mechanical work. That made them widely used in new applications such as biomedical devices, sensors, and electronics. These excellent properties and promising applications still offer demanding research challenges that require further investigation from the scientific community. This Special Issue focuses on the recent advances in elastomer materials from preparation, properties and applications. Attention will be given to the synthesis, experimental, simulation, and theoretical physics of elastomers and new applications. We welcome original research papers, communication, or reviews in this special issue.

Dr. Hany Hassanin
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. 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

  • elastomers
  • rubber
  • thermoplastic elastomers
  • dielectric elastomers
  • bio-elastomers
  • sensors
  • MEMS
  • functionalization
  • recyclability
  • simulation

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Published Papers (4 papers)

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Research

15 pages, 3891 KiB  
Article
Mechanosynthesis of Polyureas and Studies of Their Responses to Anions
by Wahab K. A. Al-Ithawi, Rammohan Aluru, Artem V. Baklykov, Albert F. Khasanov, Igor S. Kovalev, Igor L. Nikonov, Dmitry S. Kopchuk, Alexander S. Novikov, Sougata Santra, Grigory V. Zyryanov and Brindaban C. Ranu
Polymers 2023, 15(20), 4160; https://doi.org/10.3390/polym15204160 - 20 Oct 2023
Cited by 2 | Viewed by 1402
Abstract
Polyureas (PUs) have already found wide practical applications, and various methods of their synthesis have been reported. In this manuscript, we wished to report the very first mechanochemical approach towards aromatic PUs via reactions between isomeric 2,2′-, 3,3′-, and 4,4′-diaminobiphenyls and triphosgene under [...] Read more.
Polyureas (PUs) have already found wide practical applications, and various methods of their synthesis have been reported. In this manuscript, we wished to report the very first mechanochemical approach towards aromatic PUs via reactions between isomeric 2,2′-, 3,3′-, and 4,4′-diaminobiphenyls and triphosgene under solvent-free conditions following ball-milling. By using this synthetic approach, both PUs and azomethine-capped Pus were obtained. The fluorescence response of the above-mentioned PUs towards various anions in solutions were studied and selective fluorescence responses towards the hydroxyl and fluoride anions were observed. Full article
(This article belongs to the Special Issue Recent Advances in Elastomer Materials)
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17 pages, 4687 KiB  
Article
Optimization of Oil Sorbent Thermoplastic Elastomer Microfiber Production by Centrifugal Spinning
by József Kántor, Rudolf László Farmos and Attila Levente Gergely
Polymers 2023, 15(16), 3368; https://doi.org/10.3390/polym15163368 - 11 Aug 2023
Cited by 1 | Viewed by 1337
Abstract
Fibrous structures are promising candidates for oil–water separation applications. In this study, we have produced poly(styrene-b-isobutylene-b-styrene) thermoplastic elastomeric fibers with the centrifugal spinning fiber production method. The optimal fiber production conditions were achieved when using a 25% w/ [...] Read more.
Fibrous structures are promising candidates for oil–water separation applications. In this study, we have produced poly(styrene-b-isobutylene-b-styrene) thermoplastic elastomeric fibers with the centrifugal spinning fiber production method. The optimal fiber production conditions were achieved when using a 25% w/w solution concentration in an 80/20 tetrahydrofuran/toluene (w/w) solvent system at 8000 rpm rotational speed. The produced fibers were bead-free and smooth-surfaced with a diameter of 3.68 µm. The produced fibers were highly hydrophobic and oleophilic, suggested by a water contact angle of 129° and the instantaneous absorption of the oil droplet. The oil absorption study showed fast absorption kinetics with 94% relative oil uptake after 1 min and a maximum of 16.5 g sunflower oil/g fiber. The results suggest that polyisobutylene-based thermoplastic elastomers could be promising alternatives in oil absorption applications. Full article
(This article belongs to the Special Issue Recent Advances in Elastomer Materials)
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9 pages, 2440 KiB  
Communication
Practical Preparation of Elastomer-Immobilized Nonclose-Packed Colloidal Photonic Crystal Films with Various Uniform Colors
by Momoko Kobori, Yuna Hirano, Mikako Tanaka and Toshimitsu Kanai
Polymers 2023, 15(10), 2294; https://doi.org/10.3390/polym15102294 - 12 May 2023
Cited by 3 | Viewed by 1594
Abstract
Colloidal photonic crystals, which are three-dimensional periodic structures of monodisperse submicron-sized particles, are expected to be suitable for novel photonic applications and color materials. In particular, nonclose-packed colloidal photonic crystals immobilized in elastomers exhibit significant potential for use in tunable photonic applications and [...] Read more.
Colloidal photonic crystals, which are three-dimensional periodic structures of monodisperse submicron-sized particles, are expected to be suitable for novel photonic applications and color materials. In particular, nonclose-packed colloidal photonic crystals immobilized in elastomers exhibit significant potential for use in tunable photonic applications and strain sensors that detect strain based on color change. This paper reports a practical method for preparing elastomer-immobilized nonclose-packed colloidal photonic crystal films with various uniform Bragg reflection colors using one kind of gel-immobilized nonclose-packed colloidal photonic crystal film. The degree of swelling was controlled by the mixing ratio of the precursor solutions, which used a mixture of solutions with high and low affinities for the gel film as the swelling solvent. This facilitated color tuning over a wide range, enabling the facile preparation of elastomer-immobilized nonclose-packed colloidal photonic crystal films with various uniform colors via subsequent photopolymerization. The present preparation method can contribute to the development of practical applications of elastomer-immobilized tunable colloidal photonic crystals and sensors. Full article
(This article belongs to the Special Issue Recent Advances in Elastomer Materials)
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19 pages, 14432 KiB  
Article
Elastomer-Based Visuotactile Sensor for Normality of Robotic Manufacturing Systems
by Islam Mohamed Zaid, Mohamad Halwani, Abdulla Ayyad, Adil Imam, Fahad Almaskari, Hany Hassanin and Yahya Zweiri
Polymers 2022, 14(23), 5097; https://doi.org/10.3390/polym14235097 - 24 Nov 2022
Cited by 8 | Viewed by 2609
Abstract
Modern aircrafts require the assembly of thousands of components with high accuracy and reliability. The normality of drilled holes is a critical geometrical tolerance that is required to be achieved in order to realize an efficient assembly process. Failure to achieve the required [...] Read more.
Modern aircrafts require the assembly of thousands of components with high accuracy and reliability. The normality of drilled holes is a critical geometrical tolerance that is required to be achieved in order to realize an efficient assembly process. Failure to achieve the required tolerance leads to structures prone to fatigue problems and assembly errors. Elastomer-based tactile sensors have been used to support robots in acquiring useful physical interaction information with the environments. However, current tactile sensors have not yet been developed to support robotic machining in achieving the tight tolerances of aerospace structures. In this paper, a novel elastomer-based tactile sensor was developed for cobot machining. Three commercial silicon-based elastomer materials were characterised using mechanical testing in order to select a material with the best deformability. A Finite element model was developed to simulate the deformation of the tactile sensor upon interacting with surfaces with different normalities. Additive manufacturing was employed to fabricate the tactile sensor mould, which was chemically etched to improve the surface quality. The tactile sensor was obtained by directly casting and curing the optimum elastomer material onto the additively manufactured mould. A machine learning approach was used to train the simulated and experimental data obtained from the sensor. The capability of the developed vision tactile sensor was evaluated using real-world experiments with various inclination angles, and achieved a mean perpendicularity tolerance of 0.34°. The developed sensor opens a new perspective on low-cost precision cobot machining. Full article
(This article belongs to the Special Issue Recent Advances in Elastomer Materials)
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