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1. Effect of the Stretching Process of Polyethylene Separators on Rate Capability of Lithium-Ion Batteries

Author:
Takeda, Sahori; Saito, Yuria; Mukai, Takashi; Senoh, Hiroshi; Kaneko, Ikue; Yoshitake, Hideya
Source:
Journal of physical chemistry 2021 v.125 no.23 pp. 12496-12503
ISSN:
1932-7455
Subject:
polyethylene,   etc   ; anisotropy; physical chemistry;     Show all 3 Subjects
Abstract:
... To improve the performance of lithium-ion batteries, it is necessary to elucidate the effect of the separator structure on the performance. In this study, we estimated the effect of the manufacturing method, particularly the stretching process, of the separator used in lithium-ion batteries, on its pathway morphology. The physical properties of the polyethylene membranes produced by the wet proces ...
DOI:
10.1021/acs.jpcc.1c01170

2. Insight into Polyethylene and Polypropylene Pyrolysis: Global and Mechanistic Models

Author:
Harmon, Rebecca E.; SriBala, Gorugantu; Broadbelt, Linda J.; Burnham, Alan K.
Source:
Energy & fuels 2021 v.35 no.8 pp. 6765-6775
ISSN:
1520-5029
Subject:
polyethylene,   etc   ; energy; polypropylenes; pyrolysis;     Show all 4 Subjects
Abstract:
... Pyrolysis of polyolefins has been proposed as a potential resource recovery strategy by converting macromolecules into valuable fuels and chemicals. Due to variations in possible backbone structures, chain-length distributions, and arrangements of pendant groups, their decomposition behavior via pyrolysis can be complex. In the present work, a review of historical data and empirical models for two ...
DOI:
10.1021/acs.energyfuels.1c00342

3. Experimental investigation of the influence of dynamic multiaxial transverse loading on ultrahigh molecular weight polyethylene single fiber failure

Author:
Thomas, Frank David; Alexander, Stephen L.; Weerasooriya, Tusit; Sockalingam, Subramani
Source:
Composites 2021 v.142 pp. 106250
ISSN:
1359-835X
Subject:
polyethylene,   etc   ; deformation; molecular weight;     Show all 3 Subjects
Abstract:
... This paper presents a novel experimental method for impacting microscale single fibers under dynamic multiaxial loading conditions. Experimental setup is developed by modifying a 0.25-inch diameter Hopkinson bar to directly impact fibers. Using this setup, ultrahigh molecular weight polyethylene (UHMWPE) Dyneema® SK76 single fibers, with average diameter 17 µm, are transversely impacted with inden ...
DOI:
10.1016/j.compositesa.2020.106250

4. Green preparation of high-quality and low-cost graphene from discarded polyethylene plastic bags

Author:
Gu, Jian; Pang, Aimin; Guo, Xiang; Li, Lei; Huang, Danchun; Li, Fengyu
Source:
Chemical communications 2021 v.57 no.1 pp. 129-132
ISSN:
1364-548X
Subject:
polyethylene,   etc   ; electrical conductivity; graphene;     Show all 3 Subjects
Abstract:
... A facile method was used to prepare graphene from discarded polyethylene plastic bags in our work. In order to make high-quality graphene, PE plastic bags were ultrasonically cleaned, ball milled and microwave sintered successively. The height of the 2D band was 1.3 times that of the G band, which reveals that the layer number of as-prepared graphene was 1–2. The atomic ratio of C and O for graphe ...
DOI:
10.1039/d0cc06999j

5. A comprehensive review on surface modification of UHMWPE fiber and interfacial properties

Author:
Chhetri, Suman; Bougherara, Habiba
Source:
Composites 2021 v.140 pp. 106146
ISSN:
1359-835X
Subject:
polyethylene,   etc   ; adhesion; molecular weight;     Show all 3 Subjects
Abstract:
... Ultrahigh molecular weight polyethylene (UHMWPE) fiber is considered as an ideal reinforcing component due to its high strength-to-weight ratio, good toughness and high chemical and wear resistance. However, poor interfacial adhesion with polymer matrices has hindered the development of UHMWPE-based composites with high performance. This review is intended to understand how physical and chemical c ...
DOI:
10.1016/j.compositesa.2020.106146

6. Enhancing anoxic denitrification of low C/N ratio wastewater with novel ZVI composite carriers

Author:
Shi, Yanping; Liu, Tao; Yu, Hongtao; Quan, Xie
Source:
Journal of environmental sciences (China) 2022 v.112 pp. 180-191
ISSN:
1001-0742
Subject:
polyethylene,   etc   ; Dechloromonas; Raoultella; Thauera; Thiobacillus; bioactive properties; biodiversity; biofilm; contact angle; denitrification; denitrifying microorganisms; hydrophilicity; iron; metabolism; organic carbon; roughness; wastewater; China;     Show all 18 Subjects
Abstract:
... External organic carbon sources are needed to provide electron donors for the denitrification of wastewater with a low COD/NO₃⁻-N (C/N) ratio, increasing the treatment cost. The economic strategy is to enhance the bioactivity and/or biodiversity of denitrifiers to efficiently utilize organic substances in wastewater. In this study, novel zero-valent iron (ZVI) composite carriers were prepared and ...
DOI:
10.1016/j.jes.2021.05.021

7. Microplastic pollution in inshore and offshore surface waters of the southern Caspian Sea

Author:
Manbohi, Ahmad; Mehdinia, Ali; Rahnama, Reza; Dehbandi, Reza
Source:
Chemosphere 2021 v.281 pp. 130896
ISSN:
0045-6535
Subject:
polyethylene; polyethylene terephthalates,   etc   ; color; microplastics; pollution; polypropylenes; Caspian Sea;     Show all 7 Subjects
Abstract:
... In this study, as the first comprehensive monitoring, the occurrence of microplastics (MPs) in inshore and offshore surface waters of the southern Caspian Sea was investigated. Our data indicated that MPs, which were detected in all the samples, were widely distributed in the thirteen studied stations. Non-normally distribution of the MPs was observed among the studied stations (p<0.05). The avera ...
DOI:
10.1016/j.chemosphere.2021.130896

8. Plasticisers and preservatives in commercial milk products: A comprehensive study on packages used in the Spanish market

Author:
Herrero, Laura; Quintanilla-López, Jesús E.; Fernández, Mario A.; Gómara, Belén
Source:
Food chemistry 2021 v.338 pp. 128031
ISSN:
0308-8146
Subject:
polyethylene; polyethylene terephthalates,   etc   ; aluminum; food chemistry; markets; milk; phthalates;     Show all 7 Subjects
Abstract:
... A comprehensive study on packaging used in commercially available milk products from Spanish markets has been presented. Concentrations of four phthalates, seven parabens and BPA were determined in forty-two milk products. Eleven brands and five types of packaging (metallic aluminium bag, carton, high-density polyethylene, metal pail and polyethylene terephthalate) were included in the study. BPA ...
DOI:
10.1016/j.foodchem.2020.128031

9. High performance organic light-emitting diodes employing ITO-free and flexible TiOₓ/Ag/Al:ZnO electrodes

Author:
Kinner, Lukas; Dimopoulos, Theodoros; Ligorio, Giovanni; List-Kratochvil, Emil J. W.; Hermerschmidt, Felix
Source:
RSC advances 2021 v.11 no.28 pp. 17324-17331
ISSN:
2046-2069
Subject:
polyethylene terephthalates,   etc   ; electrodes; glass; transmittance;     Show all 4 Subjects
Abstract:
... The broad application of flexible optoelectronic devices is still hampered by the lack of an ITO-free and highly flexible transparent electrode. Dielectric/metal/dielectric (DMD) transparent electrodes are promising candidates to replace ITO, especially in flexible devices due to their mechanical stability to bending, high optical transmittance and low sheet resistance (<6 Ω sq⁻¹). This paper repo ...
DOI:
10.1039/d1ra02214h

10. Formation of Polysulfone Hollow Fiber Membranes Using the Systems with Lower Critical Solution Temperature

Author:
Plisko, Tatiana V.; Bildyukevich, Alexandr V.; Zhao, Liang; Huang, Weiqing; Volkov, Vladimir V.; Huang, Zuohua
Source:
Fibers 2021 v.9 no.5
ISSN:
2079-6439
Subject:
polyethylene glycol,   etc   ; polyvinylpyrrolidone; separation; temperature;     Show all 4 Subjects
Abstract:
... This study deals with the investigation of the phase state of the polymer systems from polysulfone (PSF) with the addition of polyethylene glycol (PEG-400, Mₙ = 400 g·mol⁻¹) and polyvinylpyrrolidone (PVP K-30, Mₙ = 40,000 g·mol⁻¹) in N,N-dimethylacetamide (DMA), which feature lower critical solution temperatures (LCSTs). A fragment of the phase state diagram of the system PSF —PEG-400—PVP K-30—DMA ...
DOI:
10.3390/fib9050028

11. Strengthening Polyethylene Thermoplastics through a Dynamic Covalent Networking Additive Based on Alkylboron Chemistry

Author:
Wang, Zongtao; Gu, Yu; Ma, Mingyu; Liu, Yinli; Chen, Mao
Source:
Macromolecules 2021 v.54 no.4 pp. 1760-1766
ISSN:
1520-5835
Subject:
polyethylene,   etc   ; crosslinking; tensile strength; thermoplastics;     Show all 4 Subjects
Abstract:
... Polyethylene (PE) is the most heavily used polymer worldwide. Considerable efforts have focused on modifying properties of PE via cross-linking. In contrast to previous cross-linking methods, which generate PE thermosets of low processability, here, we report the development of a dynamic covalent networking additive (DCNA) that possesses the PE backbone and reconfigurable network with alkyl boroni ...
DOI:
10.1021/acs.macromol.0c02870

12. Chain-End Modification: A Starting Point for Controlling Polymer Crystal Nucleation

Author:
Hall, Kyle Wm.; Percec, Simona; Shinoda, Wataru; Klein, Michael L.
Source:
Macromolecules 2021 v.54 no.4 pp. 1599-1610
ISSN:
1520-5835
Subject:
polyethylene,   etc   ; computers; crystallization; hydrogen; temperature;     Show all 5 Subjects
Abstract:
... This computational study illustrates how modifying the end groups of polymer chains offers a viable strategy to control polymer crystal nucleation in entangled melts. More specifically, altering chain ends to enhance chain-end aggregation enables crystal nucleation to occur at higher temperatures than with unmodified counterparts. Surprisingly, while chain-end aggregation does enhance crystal nucl ...
DOI:
10.1021/acs.macromol.0c02398

13. Slip transition in dynamic wetting for a generalized Navier boundary condition

Author:
Rougier, Valentin; Cellier, Julien; Gomina, Moussa; Bréard, Joël
Source:
Journal of colloid and interface science 2021 v.583 pp. 448-458
ISSN:
0021-9797
Subject:
polyethylene glycol,   etc   ; computers; contact angle;     Show all 3 Subjects
Abstract:
... Computer fluid dynamics simulations of dynamic wetting are often performed using a slip model on the substrate. In previous studies, the generalized Navier boundary condition (GNBC) has shown promising results and could help clear the gap between molecular and continuum scales, but lacks quantitative comparisons to experiments. We seek to investigate the dependence between the contact-line velocit ...
DOI:
10.1016/j.jcis.2020.09.015

14. Microplastics on the sea surface of the semi-closed Tokyo Bay

Author:
Nakano, Haruka; Arakawa, Hisayuki; Tokai, Tadashi
Source:
Marine pollution bulletin 2021 v.162 pp. 111887
ISSN:
0025-326X
Subject:
polyethylene,   etc   ; marine pollution; microplastics; seawater;     Show all 4 Subjects
Abstract:
... Microplastics (MPs) pollution surveys were conducted in Tokyo Bay using neuston nets (May 2019 and January 2020). Although the pollution level in Tokyo Bay was high (3.98 pcs/m³, May), it was lower than reported in other semi-closed bays because of differences in the Enclosed Index. It was found that polyethylene fragments dominated the retrieved MPs; the mode of MPs size was 800 μm. As MPs abunda ...
DOI:
10.1016/j.marpolbul.2020.111887

15. Microplastics in marine biota: A review

Author:
Ugwu, Kevin; Herrera, Alicia; Gómez, May
Source:
Marine pollution bulletin 2021 v.169 pp. 112540
ISSN:
0025-326X
Subject:
polyethylene,   etc   ; color; marine debris; marine pollution; microplastics;     Show all 5 Subjects
Abstract:
... Plastics are the most important component in marine debris. In turn, within plastics, microplastics (<5 mm) are those that most affect marine biota. Thus, this review has as its main objective to show the current state of studies of microplastics, as well as to determine the groups of vertebrates most affected by microplastics, and the type and predominant color of microplastics. For this research ...
DOI:
10.1016/j.marpolbul.2021.112540

16. The effect of post-consumer recycled polyethylene (PCRPE) on the properties of polyethylene blends of different densities

Author:
Cecon, Victor S.; Da Silva, Paulo F.; Vorst, Keith L.; Curtzwiler, Greg W.
Source:
Polymer degradation and stability 2021 v.190 pp. 109627
ISSN:
0141-3910
Subject:
polyethylene,   etc   ; degradation; feedstocks; strength (mechanics); toxicity; wastes;     Show all 6 Subjects
Abstract:
... Polyethylene (PE), a versatile polymer present nearly everywhere, poses many challenges as more of it becomes terrestrial and marine waste and used for everything from packaging such as plastic bag production (LDPE) to construction pipes (HDPE). As more companies are required to follow government regulations and consumers’ requests to produce more sustainable products, the general interest in PE r ...
DOI:
10.1016/j.polymdegradstab.2021.109627

17. Design, construction and optimization a flexible bench-scale rotating biological contactor (RBC) for enhanced production of bacterial cellulose by Acetobacter Xylinium

Author:
soleimani, Ali; Hamedi, Sepideh; Babaeipour, Valiollah; Rouhi, Motahreh
Source:
Bioprocess and biosystems engineering 2021 v.44 no.6 pp. 1071-1080
ISSN:
1615-7591
Subject:
polyethylene,   etc   ; Acetobacter; aeration; bioprocessing; cellulose; fermentation;     Show all 6 Subjects
Abstract:
... In this research a bench scale rotating biological contactor (RBC) was designed and constructed to produce BC. The effects of variables including rotation speed of the disk, distance between disks, disk type and external aeration on BC productivity were investigated. Results showed that the highest weight of BC produced on the surface of integrated polyethylene discs which rotated at 13 rpm. It wa ...
DOI:
10.1007/s00449-021-02510-0

18. Entropy-Driven Supramolecular Ring-Opening Polymerization of a Cyclic Hemoglobin Monomer for Constructing a Hemoglobin–PEG Alternating Polymer with Structural Regularity

Author:
Matsuhira, Takashi; Sakai, Hiromi
Source:
Biomacromolecules 2021 v.22 no.5 pp. 1944-1954
ISSN:
1526-4602
Subject:
polyethylene glycol,   etc   ; enthalpy; entropy; hemoglobin; polymerization;     Show all 5 Subjects
Abstract:
... Our earlier report described that a cyclic hemoglobin (Hb) monomer with two β subunits of a Hb molecule (α₂β₂) bound through a flexible polyethylene glycol (PEG) chain undergoes reversible supramolecular ring-opening polymerization (S-ROP) to produce a supramolecular Hb polymer with a Hb–PEG alternating structure. In this work, we polymerized cyclic Hb monomers with different ring sizes (2, 5, 10, ...
DOI:
10.1021/acs.biomac.1c00061

19. Selective distribution of SrTiO3 in co-continuous composites: An effective method to improve the dielectric and mechanical properties

Author:
Mao, Zepeng; Sun, Haoxuan; Zhang, Jun
Source:
Composites 2021 v.143 pp. 106312
ISSN:
1359-835X
Subject:
polyethylene,   etc   ; dielectric properties; dispersibility; manufacturing; strontium;     Show all 5 Subjects
Abstract:
... Tailoring the distribution of functional fillers in co-continuous polymeric matrix is a new approach for fabricating high-performance composites. Herein, the selective distribution of strontium titanate (SrTiO₃, ST) in a co-continuous poly(methyl methacrylate)/chlorinated polyethylene (PMMA/CPE, 70/30) matrix was achieved via altering the mixing sequence and adjusting the wetting coefficient (ωₐ). ...
DOI:
10.1016/j.compositesa.2021.106312

20. New phenazine based anolyte material for high voltage organic redox flow batteries

Author:
Romadina, Elena I.; Komarov, Denis S.; Stevenson, Keith J.; Troshin, Pavel A.
Source:
Chemical communications 2021 v.57 no.24 pp. 2986-2989
ISSN:
1364-548X
Subject:
polyethylene glycol,   etc   ; batteries; electric potential difference; solubility;     Show all 4 Subjects
Abstract:
... Herein, we report the synthesis and investigation of a novel phenazine derivative M1 with oligomeric ethylene glycol ether substituents as a promising anolyte material for non-aqueous organic redox flow batteries (RFBs). The designed material undergoes a reversible and stable reduction at −1.72 V vs. Ag/AgNO₃ and demonstrates excellent (>2.5 M) solubility in MeCN. A non-aqueous organic redox flow ...
DOI:
10.1039/d0cc07951k