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Polymers
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Hybrid Aerogels and Their Composites with Polymers
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Hybrid Aerogels and Their Composites with Polymers

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Chemistry".

Deadline for manuscript submissions: closed (5 December 2022) | Viewed by 23673

Special Issue Editors

Dr. Vinayak G. Parale

E-Mail Website
Guest Editor
Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
Interests: hybrid aerogels; porous polymers; self-cleaning coatings; sol–gel process; thin films; functional materials; superhydrophobic coatings; photocatalysis; low-k dielectrics
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Hyung-Ho Park

E-Mail Website
Guest Editor
Department of Materials Science and Engineering, Yonsei University, Seoul, Korea
Interests: 1. nanoporous aerogels: thermal barrier, filter, soundproofing, adsorber, gas sensor, ILD of ULSI; 2. thin films: ALD, sputtering deposition, TCO, Mott’s for ReRAM, high-K dielectrics; 3. nanomaterials: nanoparticles, nanocomposite, OLED, QLED, high-K dielectrics
Special Issues, Collections and Topics in MDPI journals
Dr. Varsha D. Phadtare

E-Mail Website
Guest Editor
Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea
Interests: hybrid aerogels; porous polymers; self-cleaning coatings; sol–gel process; thin films; functional materials; superhydrophobic coatings; photocatalysis; low-k dielectrics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Aerogel is the lightest solid material and can be synthesized by various methods as per the application requirements. It can be potentially used in a wide range of applications where high pore volume and high surface area play major roles. Aerogels and their composites with polymers can be used for an enormous field of applications such as thermal insulation, low-K dielectric, environmental remediation, oil–water separation, electrochemistry (supercapacitors/batteries), carriers of catalysts and other active agents, filling materials, biomedical applications, etc. In the near future, we expect significant further development in the areas of organic and hybrid aerogel materials as well as optimization of their manufacturing processes and their transfer to the market.

              This Special Issue will provide an international forum for researchers to discuss the most recent studies concerning the synthesis, characterization, and applications of hybrid aerogels and their composites with polymers. Both original contributions and reviews are welcome.

Dr. Vinayak G Parale
Prof. Hyung-Ho Park
Dr. Varsha D. Phadtare
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 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

  • hybrid aerogels
  • porous materials
  • polymers
  • flexible
  • multifunctional thermal insulation
  • environmental remediation
  • energy storage and conversion

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Published Papers (4 papers)

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Research

18 pages, 4937 KiB  
Article
Expanded Polystyrene Beads Coated with Intumescent Flame Retardant Material to Achieve Fire Safety Standards
by Sangram P. Bhoite, Jonghyuck Kim, Wan Jo, Pravin H. Bhoite, Sawanta S. Mali, Kyu-Hwan Park and Chang-Kook Hong
Polymers 2021, 13(16), 2662; https://doi.org/10.3390/polym13162662 - 10 Aug 2021
Cited by 26 | Viewed by 9460
Abstract
The compatibility and coating ratio between flame retardant materials and expanded polystyrene (EPS) foam is a major impediment to achieving satisfactory flame retardant performance. In this study, we prepared a water-based intumescent flame retardant system and methylene diphenyl diisocyanate (MDI)-coated expandable polystyrene microspheres [...] Read more.
The compatibility and coating ratio between flame retardant materials and expanded polystyrene (EPS) foam is a major impediment to achieving satisfactory flame retardant performance. In this study, we prepared a water-based intumescent flame retardant system and methylene diphenyl diisocyanate (MDI)-coated expandable polystyrene microspheres by a simple coating approach. We investigated the compatibility, coating ratio, and fire performance of EPS- and MDI-coated EPS foam using a water-based intumescent flame retardant system. The microscopic study revealed that the water-based intumescent flame retardant materials were successfully incorporated with and without MDI-coated EPS microspheres. The cone calorimeter tests (CCTs) of the MDI-coated EPS containing water-based intumescent flame retardant materials exhibited better flame retardant performance with a lower total heat release (THR) 7.3 MJ/m2, peak heat release rate (PHRR) 57.6 kW/m2, fire growth rate (FIGRA) 2027.067 W/m2.s, and total smoke production (TSP) 0.133 m2. Our results demonstrated that the MDI-coated EPS containing water-based intumescent flame retardant materials achieved flame retarding properties as per fire safety standards. Full article
(This article belongs to the Special Issue Hybrid Aerogels and Their Composites with Polymers)
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15 pages, 4439 KiB  
Article
Construction and Transition Metal Oxide Loading of Hierarchically Porous Carbon Aerogels
by Jintian Wang, Xinyang Ruan, Jiahao Qiu, Hao Liang, Xingzhong Guo and Hui Yang
Polymers 2020, 12(9), 2066; https://doi.org/10.3390/polym12092066 - 11 Sep 2020
Cited by 2 | Viewed by 3374
Abstract
Hierarchically porous carbon aerogels (CAs) were prepared by organic condensation gelation method combined with atmospheric drying and pore-formation technology, followed by a carbonization process. With as-prepared CAs as substrate, the transition metal oxide nanoparticles loaded CAs composites (MnO2/Mn2O3 [...] Read more.
Hierarchically porous carbon aerogels (CAs) were prepared by organic condensation gelation method combined with atmospheric drying and pore-formation technology, followed by a carbonization process. With as-prepared CAs as substrate, the transition metal oxide nanoparticles loaded CAs composites (MnO2/Mn2O3@CA and Ni/NiO@CA) were achieved by means of liquid etching method combined with heat treatment, respectively. The catalyst, pore-forming agent and etching have important roles on the apparent density and pore structure of CAs. The hydrochloric acid (catalyst) significantly accelerates the gelation process and influences the size and distribution of macropores, whereas the addition of PEG2000 (pore-forming agent) and the etching of liquid solution leads to the formation of mesopore structure in CAs. Appropriate amounts of hydrochloric acid and PEG2000 allow the formation of hierarchically porous CAs with a BET surface area of 482.9 m2·g−1 and a macropore size of 11.3 μm. After etching and loading, the framework of CAs is etched to become a mesoporous structure, and the transition metal oxide nanoparticles can be uniformly loaded in CAs. These resultant composites have promising application in super capacitor, electrocatalysis, batteries and other fields. Full article
(This article belongs to the Special Issue Hybrid Aerogels and Their Composites with Polymers)
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11 pages, 3717 KiB  
Article
Synthesis of Antibacterial Gelatin/Sodium Alginate Sponges and Their Antibacterial Activity
by Yanyi Wen, Bing Yu, Zhongjie Zhu, Zhuoran Yang and Wei Shao
Polymers 2020, 12(9), 1926; https://doi.org/10.3390/polym12091926 - 26 Aug 2020
Cited by 29 | Viewed by 4725
Abstract
In the present study, sponges with the antibiotic tetracycline hydrochloride (TCH) loaded into alginate incorporated with gelatin (G/SA) were fabricated. The G/SA sponges were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and thermogravimetric (TG) analysis. G/SA sponges show a [...] Read more.
In the present study, sponges with the antibiotic tetracycline hydrochloride (TCH) loaded into alginate incorporated with gelatin (G/SA) were fabricated. The G/SA sponges were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and thermogravimetric (TG) analysis. G/SA sponges show a three-dimensional network structure with high porosity. An excellent swelling behavior and a controlled TCH release performance are observed from G/SA sponges. Moreover, they exhibit good antibacterial activity against both Gram-positive and Gram-negative bacteria. Full article
(This article belongs to the Special Issue Hybrid Aerogels and Their Composites with Polymers)
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11 pages, 2201 KiB  
Article
Nickel-Graphene Nanoplatelet Deposited on Carbon Fiber as Binder-Free Electrode for Electrochemical Supercapacitor Application
by Hemraj M. Yadav, Narayan Chandra Deb Nath, Jeonghun Kim, S. K. Shinde, Sivalingam Ramesh, Faruk Hossain, Olaniyan Ibukun and Jae-Joon Lee
Polymers 2020, 12(8), 1666; https://doi.org/10.3390/polym12081666 - 27 Jul 2020
Cited by 21 | Viewed by 4808
Abstract
A binder-free process for the electrode preparation for supercapacitor application was suggested by drop casting graphene nanoplatelets on a carbon fiber (GnP@CF) followed by electrodeposition of Ni nanoparticles (NPs). The microstructure of the electrode showed that Ni was homogeneously distributed over the surface [...] Read more.
A binder-free process for the electrode preparation for supercapacitor application was suggested by drop casting graphene nanoplatelets on a carbon fiber (GnP@CF) followed by electrodeposition of Ni nanoparticles (NPs). The microstructure of the electrode showed that Ni was homogeneously distributed over the surface of the GnP@CF. XRD analysis confirmed the cubic structure of metallic Ni NPs. The Ni-GnP@CF electrode showed excellent pseudocapacitive behavior in alkaline solution by exhibiting a specific capacitance of 480 F/g at 1.0 A/g, while it was 375 F/g for Ni@CF. The low value of series resistance of Ni-GnP@CF (1 Ω) was attributed to the high capacitance. The enhanced capacitance of the electrode could be correlated to the highly nanoporous structure of the composite material, synergetic effect of the electrical double layer charge-storage properties of graphene, and the pseudocapacitive nature of Ni NPs. Full article
(This article belongs to the Special Issue Hybrid Aerogels and Their Composites with Polymers)
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