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Polymers
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Advanced Polymers for Energy and Environment Science
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Advanced Polymers for Energy and Environment Science

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

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 9880

Special Issue Editor

Dr. Guangfu Liao

E-Mail Website
Guest Editor
National Forestry and Grassland Administration Key Laboratory of Plant Fiber Functional Materials, College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
Interests: polymer composites; polymer chemistry and physics; photocatalysis; batteries; gas adsorption
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Energy shortage and environmental pollution have attracted worldwide attention owing to the highly developed industry and population explosion. To overcome these issues, some advanced polymer materials have been widely developed and explored in these fields due to their unique advantages such as high strength, high flexibility, high stability, high insulation resistance, etc. Therefore, the development of advanced polymers (high-performance polymers, polymer composites, polymer membranes, microporous polymers, etc.) for energy and environment applications is a very important and hot topic. This Special Issue aims to invite and accept articles (all types, including research articles, communications, reviews, perspectives, analyses, etc.) regarding the development, exploration, and engineering of advanced polymers for energy and environment applications.

Dr. Guangfu Liao
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

  • polymer composites
  • polymer membranes
  • microporous polymers
  • high-performance polymers
  • energy and environment applications

Published Papers (4 papers)

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Research

14 pages, 5293 KiB  
Article
Synthesis and Iodine Adsorption Properties of Organometallic Copolymers with Propeller-Shaped Fe(II) Clathrochelates Bridged by Different Diaryl Thioether and Their Oxidized Sulfone Derivatives
by Suchetha Shetty, Noorullah Baig and Bassam Alameddine
Polymers 2022, 14(22), 4818; https://doi.org/10.3390/polym14224818 - 9 Nov 2022
Cited by 13 | Viewed by 1561
Abstract
Three organometallic copolymers, ICP1-3, containing iron(II) clathrochelate units with cyclohexyl lateral groups and interconnected by various thioether derivatives were synthesized. The reaction of the latter into their corresponding OICP1-3 sulfone derivatives was achieved quantitatively using mild oxidation reaction conditions. The target copolymers, ICP1-3 [...] Read more.
Three organometallic copolymers, ICP1-3, containing iron(II) clathrochelate units with cyclohexyl lateral groups and interconnected by various thioether derivatives were synthesized. The reaction of the latter into their corresponding OICP1-3 sulfone derivatives was achieved quantitatively using mild oxidation reaction conditions. The target copolymers, ICP1-3 and OICP1-3, were characterized by various instrumental analysis techniques, and their iodine uptake studies disclosed excellent iodine properties, reaching a maximum of 360 wt.% (qe = 3600 mg g−1). The adsorption mechanisms of the copolymers were explored using pseudo-first-order and pseudo-second-order kinetic models. Furthermore, regeneration tests confirmed the efficiency of the target copolymers for their iodine adsorption even after several adsorption-desorption cycles. Full article
(This article belongs to the Special Issue Advanced Polymers for Energy and Environment Science)
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23 pages, 7383 KiB  
Article
Effect of Fuel Preheating on Engine Characteristics of Waste Animal Fat-Oil Biodiesel in Compression Ignition Engine
by Gokul Raghavendra Srinivasan, Ranjitha Jambulingam, Amel Gacem, Akil Ahmad, Javed Khan Bhutto, Krishna Kumar Yadav, Amine Mezni, Omar Khulaif R. Alharbi, Saiful Islam, Yongtae Ahn and Byong-Hun Jeon
Polymers 2022, 14(18), 3896; https://doi.org/10.3390/polym14183896 - 18 Sep 2022
Cited by 5 | Viewed by 1975
Abstract
The present study aims at understanding the effects of fuel preheating on engine characteristics of waste animal fat-oil (WAF-O) biodiesel in a single-cylinder CI engine, with the preheating technique proposed as an effective means for enhancing the fuel properties. To understand the effects [...] Read more.
The present study aims at understanding the effects of fuel preheating on engine characteristics of waste animal fat-oil (WAF-O) biodiesel in a single-cylinder CI engine, with the preheating technique proposed as an effective means for enhancing the fuel properties. To understand the effects of the preheated fuel, the WAF-O biodiesel was preheated at 60, 80, 100 and 120 °C and tested along with neat diesel and unheated WAF-O biodiesel. For this purpose, biodiesel was produced from different animal wastes by means of KOH-assisted ethanol-based transesterification, reporting its maximum yield as 96.37 ± 1.8%, with significant distribution of unsaturated oleic acid, saturated palmitic acid and stearic acid. Upon evaluating its fuel characteristics as per ASTM D6751 standards, a rise in preheating temperature by 1 °C reduced the density and kinematic viscosity of WAF-O biodiesel by 0.383 kg/m3 and 0.025 mm2/s, respectively, and was explained by the weakening of intermolecular forces between its fatty acid ester molecules. Preheated samples reported superior combustion characteristics by exhibiting increased in-cylinder pressure (2.24%, on average) and heat release rates in addition to their shortened ignition delay (1–4 °CA). Furthermore, preheating of WAF-O biodiesel reduced its specific fuel consumption and increased its brake thermal efficiency by 7.86% (on average) and 9.23% (on average), respectively. However, higher preheating temperatures (>120 °C) resulted in increased fuel consumption owing to its varied flow characteristics. In addition to the changes in combustion characteristics, preheating WAF-O bio-diesel also resulted in reduced carbon monoxide, nitrous oxide and hydrocarbon emission by 13.88%, 7.21% and 26.94%, respectively, and increased carbon dioxide emission by 7.58%. Summing up, the enhancements in overall engine characteristics of preheated samples were accounted for by their improvised fuel injection characteristics due to their reduced density and viscosity, which ensured for their effective combustion. Full article
(This article belongs to the Special Issue Advanced Polymers for Energy and Environment Science)
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19 pages, 4892 KiB  
Article
Synthesis and Characterization of Crosslinked Castor Oil-Based Polyurethane Nanocomposites Based on Novel Silane-Modified Isocyanate and Their Potential Application in Heat Insulating Coating
by Yuan Meng, Ken Chen, Yuyin Yang, Tao Jiang, Tonghui Hao, Xiaoju Lu and Qunchao Zhang
Polymers 2022, 14(9), 1880; https://doi.org/10.3390/polym14091880 - 4 May 2022
Cited by 4 | Viewed by 2583
Abstract
An isocyanate with trimethoxysilane groups at the side chains (IPDI-M) was synthesized via an addition between the mercaptopropyl trimethoxysilane groups (MPTMS) and IPDI tripolymer (IPDI-T). Then, silane grafted isocyanate as the functional hard segment, castor oil as the soft segment, poly (ethylene adipate) [...] Read more.
An isocyanate with trimethoxysilane groups at the side chains (IPDI-M) was synthesized via an addition between the mercaptopropyl trimethoxysilane groups (MPTMS) and IPDI tripolymer (IPDI-T). Then, silane grafted isocyanate as the functional hard segment, castor oil as the soft segment, poly (ethylene adipate) diol (PEA) as the chain extender, and MPTMS as an end-capping reagent were applied to form a series of organosilicon hybrid bio-based polyurethane (CPUSi). The effect of the IPDI-M contents on the thermal stability, mechanical properties, and surface properties of the resulting product was systematically investigated. Profit from the Si–O–Si crosslinked structures formed from MPTMS curing, the tensile strength, and Young’s modulus of the resulting products increased from 9.5 MPa to 22.3 Mpa and 4.05 Mpa to 81.59 Mpa, respectively, whereas the elongation at break decreased from 342% to 101%. The glass transition temperature, thermal stability, transparency, hydrophobicity, and chemical resistance were remarkably strengthened for the obtained organosilicon-modified polyurethane with the increasing MPTMS content. At the end of the work, the thermal insulation coating that was based on CPUSi and ATO can effectively block near-infrared rays, and the temperature difference between the inside and outside of the film reached 15.1 °C. Full article
(This article belongs to the Special Issue Advanced Polymers for Energy and Environment Science)
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9 pages, 2184 KiB  
Communication
Control of Photoinduced Electron Transfer Using Complex Formation of Water-Soluble Porphyrin and Polyvinylpyrrolidone
by Yilin Cao, Tomoe Takasaki, Satoshi Yamashita, Yasuhisa Mizutani, Akira Harada and Hiroyasu Yamaguchi
Polymers 2022, 14(6), 1191; https://doi.org/10.3390/polym14061191 - 16 Mar 2022
Cited by 3 | Viewed by 3093
Abstract
Inspired by the natural photosynthetic system in which proteins control the electron transfer from electron donors to acceptors, in this research, artificial polymers were tried to achieve this control effect. Polyvinylpyrrolidone (PVP) was found to form complex with pigments 5,10,15,20-tetrakis-(4-sulfonatophenyl) porphyrin (TPPS) and [...] Read more.
Inspired by the natural photosynthetic system in which proteins control the electron transfer from electron donors to acceptors, in this research, artificial polymers were tried to achieve this control effect. Polyvinylpyrrolidone (PVP) was found to form complex with pigments 5,10,15,20-tetrakis-(4-sulfonatophenyl) porphyrin (TPPS) and its zinc complex (ZnTPPS) quantitatively through different interactions (hydrogen bonds and coordination bonds, respectively). These complex formations hinder the interaction between ground-state TPPS or ZnTPPS and an electron acceptor (methyl viologen, MV2+) and could control the photoinduced electron transfer from TPPS or ZnTPPS to MV2+, giving more electron transfer products methyl viologen cationic radical (MV+•). Other polymers such as PEG did not show similar results, indicating that PVP plays an important role in controlling the photoinduced electron transfer. Full article
(This article belongs to the Special Issue Advanced Polymers for Energy and Environment Science)
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