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1. Optimization of patterned polysulfone membranes for microalgae harvesting

Author:
Zhao, Zhenyu; Ilyas, Ayesha; Muylaert, Koenraad; Vankelecom, Ivo F.J.
Source:
Bioresource technology 2020 v.309 pp. 123367
ISSN:
0960-8524
Subject:
polyethylene glycol,   etc   ; fluid mechanics; fouling; harvesting; microalgae;     Show all 5 Subjects
Abstract:
... Membranes with a wave pattern on the membrane surface are now proposed for the first time to alleviate microalgal fouling and increase the membrane flux. The membrane morphology was observed via scanning electron microscope, and the clean water permeance, microalgae harvesting efficiency and membrane flux in a real broth were determined to investigate the effects of polysulfone (PSF) and polyethyl ...
DOI:
10.1016/j.biortech.2020.123367

2. Fabricating High-Resolution Metal Pattern with Inkjet Printed Water-Soluble Sacrificial Layer

Author:
Sun, Jiazhen; Li, Yang; Liu, Guangping; Chen, Shuoran; Zhang, Yang; Chen, Chen; Chu, Fuqiang; Song, Yanlin
Source:
ACS applied materials & interfaces 2020 v.12 no.19 pp. 22108-22114
ISSN:
1944-8252
Subject:
polyethylene glycol,   etc   ; electronic equipment; evaporation; water solubility;     Show all 4 Subjects
Abstract:
... The metal pattern plays a crucial role in various optoelectronic devices. However, fabrication of high-resolution metal patterns has serious problems including complicated techniques and high cost. Herein, an inkjet printed water-soluble sacrificial layer was proposed to fabricate a high-resolution metal pattern. The water-soluble sacrificial layer was inkjet printed on a polyethylene glycol terep ...
DOI:
10.1021/acsami.0c01138

3. Mechanistic investigation of bead-based padlock rolling circle amplification under molecular crowding conditions

Author:
Sasaki, Naoki; Kase, Chikako; Chou, Masaki; Nakazato, Genki; Sato, Kae
Source:
Analytical biochemistry 2020 v.593 pp. 113596
ISSN:
0003-2697
Subject:
polyethylene glycol,   etc   ; DNA; nucleic acid hybridization;     Show all 3 Subjects
Abstract:
... We present a mechanistic investigation of bead-based padlock rolling circle amplification (RCA) under molecular crowding conditions, a sensitive and selective DNA detection method we have developed. Several important points to optimize the method were clarified: (i) the increase in the number of RCA products is proportional to the excluded volume of poly(ethylene glycol) (PEG), (ii) PEG facilitate ...
DOI:
10.1016/j.ab.2020.113596

4. Unusual effect of flow rate on retention in analytical supercritical fluid chromatography exemplified by polyethylene glycol separation

Author:
Kostenko, Mikhail O.; Pokrovskiy, Oleg I.; Zakhodyaeva, Yulia A.; Voshkin, Andrey A.; Lunin, Valery V.
Source:
Journal of chromatography 2020 v.1610 pp. 460513
ISSN:
0021-9673
Subject:
polyethylene glycol,   etc   ; molecular weight; supercritical fluid chromatography;     Show all 3 Subjects
Abstract:
... We report a case of a peculiar effect of flow rate on retention in a separation of polyethylene glycol oligomers via supercritical fluid chromatography. During method development, we tested flow rate gradients and notices that for some PEG oligomers retention times at flow rate gradient were lower than at constant flow with the largest flow rate value used in a gradient. For instance, at BEH stati ...
DOI:
10.1016/j.chroma.2019.460513

5. Concentration Dependence of the Extensional Relaxation Time and Finite Extensibility in Dilute and Semidilute Polymer Solutions Using a Microfluidic Rheometer

Author:
Kim, Seo Gyun; Lee, Heon Sang
Source:
Macromolecules 2019 v.52 no.24 pp. 9585-9593
ISSN:
1520-5835
Subject:
polyethylene glycol,   etc   ; extensibility; rheometers;     Show all 3 Subjects
Abstract:
... We investigated the composition dependence of the finite extensible nonlinear elastic (FENE) constant of poly(ethylene oxide) (PEO) solutions by the Tikhonov regularization method with the measured normal stress in microfluidic channels. We measured the normal stress of the PEO solutions in response to the extensional flows in microfluidic channels. Additionally, we extracted the extensional relax ...
DOI:
10.1021/acs.macromol.9b01143

6. Correction: Silica cubosomes templated by a star polymer

Author:
Cui, Congcong; Han, Lu; Che, Shunai
Source:
RSC advances 2019 v.9 no.47 pp. 27475
ISSN:
2046-2069
Subject:
polyethylene glycol,   etc   ; polystyrenes; silica;     Show all 3 Subjects
Abstract:
... Correction for ‘Silica cubosomes templated by a star polymer’ by Congcong Cui et al., RSC Adv., 2019, 9, 6118–6124. ...
DOI:
10.1039/c9ra90064k

7. Green and sky blue perovskite light-emitting devices with a diamine additive

Author:
He, Lihong; Xiao, Zewu; Yang, Xiaoli; Wu, Yanting; Lian, Yajun; Peng, Xuefeng; Yang, Xiaohui
Source:
Journal of materials science 2020 v.55 no.18 pp. 7691-7701
ISSN:
0022-2461
Subject:
polyethylene glycol,   etc   ; crystal structure; electrochemiluminescence; electronic equipment; photoluminescence;     Show all 5 Subjects
Abstract:
... Low-dimensional perovskite materials are gaining broad interest for the development of high-performance optoelectronic devices due to their improved stability and rich compositions. Herein, we investigate the surface morphology, crystal structure, photo-physics, and electroluminescence properties of 1,4-diaminobutane hydrobromide (BDADBr)-derived quasi-two-dimensional perovskites. PL maximum is bl ...
DOI:
10.1007/s10853-020-04553-2

8. Visualizing the internal structure of polyethylene glycol-impregnated wood by digital breast tomosynthesis

Author:
Mori, Mika.; Kuhara, Shigehide.; Suzuki, Sinya.
Source:
Dendrochronologia 2020 v.61 pp. 125708
ISSN:
1125-7865
Subject:
polyethylene glycol,   etc   ; computed tomography; growth rings; image analysis; wood;     Show all 5 Subjects
Abstract:
... This study proposes digital breast tomosynthesis (DBT) as a low-tube-voltage method for imaging wood artifacts treated with polyethylene glycol (PEG). In case of general clinical X-ray Computed Tomography (X-CT), PEG-impregnated wood images typically suffer from low contrast between the PEG and the tree-ring. Because X-CT uses high-tube-voltage X-rays that have high energy, they are transmitted re ...
DOI:
10.1016/j.dendro.2020.125708

9. Fiber Lithography: A Facile Lithography Platform Based on Electromagnetic Phase Modulation Using a Highly Birefringent Electrospun Fiber

Author:
Kim, Jonghyun; Shin, Dongwoon; Chang, Jiyoung
Source:
ACS applied materials & interfaces 2020 v.12 no.17 pp. 20056-20066
ISSN:
1944-8252
Subject:
polyethylene glycol,   etc   ; anisotropy; electromagnetic field; manufacturing; semiconductors; serpentine;     Show all 6 Subjects
Abstract:
... Lithography plays a key role in advancing manufacturing as well as the semiconductor industry. However, the currently available state-of-the-art lithography methods still require access to expensive tools and facilities. Herein, we suggest a novel lithography method based on electromagnetic phase modulation of ultraviolet using a highly birefringent electrospun fiber to overcome such limitations. ...
DOI:
10.1021/acsami.0c01314

10. PEG@ZIF-8/PVDF Nanocomposite Membrane for Efficient Pervaporation Desulfurization via a Layer-by-Layer Technology

Author:
Sun, Hexiang; Magnuson, Zachary; He, Wenwen; Zhang, Weijie; Vardhan, Harsh; Han, Xiaolong; He, Gaohong; Ma, Shengqian
Source:
ACS applied materials & interfaces 2020 v.12 no.18 pp. 20664-20671
ISSN:
1944-8252
Subject:
polyethylene glycol,   etc   ; asymmetric membranes; desulfurization; nanocomposites; pervaporation; sulfur; thermoplastics;     Show all 7 Subjects
Abstract:
... The desulfurization property of conventional mixed matrix membranes (MMMs) cannot meet the necessary demand due to particles aggregation and interface defects. Here, we put forward a layer-by-layer (LBL) approach to make a novel PEG@ZIF-8/poly(vinylidene difluoride)(PVDF) composite membrane for pervaporation desulfurization. In this way, a ZIF-8 layer is covered on the surface of the PVDF porous m ...
DOI:
10.1021/acsami.0c02513

11. Segmental Dynamics Measured by Quasi-Elastic Neutron Scattering and Ion Transport in Chemically Distinct Polymer Electrolytes

Author:
Mongcopa, Katrina Irene S.; Gribble, Daniel A.; Loo, Whitney S.; Tyagi, Madhusudan; Mullin, Scott A.; Balsara, Nitash P.
Source:
Macromolecules 2020 v.53 no.7 pp. 2406-2411
ISSN:
1520-5835
Subject:
polyethylene glycol,   etc   ; dissociation; electrolytes; friction; lithium; neutron diffraction;     Show all 6 Subjects
Abstract:
... We investigate the segmental dynamics and ion transport in two chemically distinct polymer electrolytes, poly(2-cyanoethyl acrylate) (PCEA) and poly(ethylene oxide) (PEO), and their mixtures with lithium bis(trifluoromethane)sulfonimide (LiTFSI) salt. Quasi-elastic neutron scattering experiments reveal slow dynamics in PCEA/LiTFSI relative to that in PEO/LiTFSI, translating to monomeric friction c ...
DOI:
10.1021/acs.macromol.0c00091

12. Cell adhesion control by photoinduced LCST shift of PNIPAAm-based brush scaffolds

Author:
Imato, Keiichi; Nagata, Kazuho; Watanabe, Rina; Takeda, Naoya
Source:
Journal of materials chemistry B 2020 v.8 no.12 pp. 2393-2399
ISSN:
2050-7518
Subject:
polyethylene glycol,   etc   ; bioengineering; cell adhesion; composite polymers; physicochemical properties; temperature;     Show all 6 Subjects
Abstract:
... Poly(N-isopropylacrylamide) (PNIPAAm)-brush substrates are one of the most successful dynamic scaffolds for thermally controlling cell adhesion. Endowing substrates with photocontrollability promises further development and applications in the biomedical and bioengineering fields. In this study, we developed photoresponsive PNIPAAm copolymers by incorporation of spiropyran into the polymer chain, ...
DOI:
10.1039/c9tb02958c

13. Conformation in Ultrathin Polymer Brush Coatings Resolved by Infrared Nanoscopy

Author:
de los Santos Pereira, Andres; Cernescu, Adrian; Svoboda, Jan; Sivkova, Radoslava; Romanenko, Iryna; Bashta, Bogdana; Keilmann, Fritz; Pop-Georgievski, Ognen
Source:
Analytical chemistry 2020 v.92 no.7 pp. 4716-4720
ISSN:
1520-6882
Subject:
polyethylene glycol,   etc   ; bacterial adhesion; blood coagulation; coatings; models; spectroscopy;     Show all 6 Subjects
Abstract:
... Polymer brush coatings are effective in preventing blood coagulation or bacterial attachment, but their chain conformation, while vital for this effect, was never characterized in high spatial resolution. Here, we report mid-infrared spectroscopic nanoscopy studies of few-nanometer-thin poly(ethylene oxide) (PEO) films which reveal marked spectral variations along the surface at a length scale sma ...
DOI:
10.1021/acs.analchem.9b05661

14. Additional Entanglement Effect Imposed by Small Sized Ring Aggregates in Supramolecular Polymer Melts: Molecular Dynamics Simulation Study

Author:
Lee, Eunsang; Paul, Wolfgang
Source:
Macromolecules 2020 v.53 no.5 pp. 1674-1684
ISSN:
1520-5835
Subject:
polyethylene glycol,   etc   ; melting; molecular dynamics; simulation models; topology;     Show all 5 Subjects
Abstract:
... This work investigates structures and dynamics of supramolecular polymer (SMP) melts comprising poly(ethylene glycol)s end-functionalized by pairwise associating stickers via molecular dynamics simulations. The system involves ring and linear aggregates, and an exponentially increasing segmental relaxation time indicates a topological effect besides entanglements between linear aggregates. We find ...
DOI:
10.1021/acs.macromol.9b02209

15. Effect of Loop Defects on the High Strain Rate Behavior of PEGDA Hydrogels: A Molecular Dynamics Study

Author:
Luo, Ke; Wangari, Charity; Subhash, Ghatu; Spearot, Douglas E.
Source:
TheJournal of physical chemistry 2020 v.124 no.10 pp. 2029-2039
ISSN:
1520-5207
Subject:
polyethylene glycol,   etc   ; deformation; hydrogels; mechanical properties; molecular dynamics; topology;     Show all 6 Subjects
Abstract:
... The high strain rate behavior of nonideal poly(ethylene glycol) diacrylate hydrogels under uniaxial tension and transient-state shear deformations is investigated using molecular dynamics (MD) simulations. This work specifically focuses on the influence of first-order loop defects, including their effect on topological evolutions. Two approaches are proposed to systematically introduce first-order ...
DOI:
10.1021/acs.jpcb.9b11378

16. Inclusion Crystallization of Silicotungstic Acid and Poly(ethylene oxide) and Its Impact on Proton Conductivities

Author:
Wen, Tao; Qiu, Lu; Zheng, Zhao; Gong, Yuqing; Yuan, Jun; Wang, Yingying; Huang, Mingjun; Yin, Panchao
Source:
Macromolecules 2020 v.53 no.4 pp. 1415-1421
ISSN:
1520-5835
Subject:
polyethylene glycol,   etc   ; crystal structure; crystallization; crystals; nanocomposites; nanosheets; propylene oxide;     Show all 7 Subjects
Abstract:
... In the present work, the hybridization of subnanometer-scale metal oxide cluster SiW₁₂O₄₀⁴– (STA) with poly(ethylene oxide) (PEO) and PEO-block-poly(propylene oxide)-block-PEO was investigated. A new crystalline phase was formed in the hybrid nanocomposites, which is attributed to the inclusion of PEO in the lattices of STA, that is, inclusion crystallization. The crystal lattice and dimensions of ...
DOI:
10.1021/acs.macromol.0c00020

17. Study of Properties of Solutions Based on Ethylene Carbonate and Poly(ethylene glycol)s with Different Chain Lengths

Author:
Kasprzyk, Marta; Zalewska, Aldona; Wieczorek, Wladyslaw
Source:
Journal of physical chemistry 2020 v.124 no.9 pp. 5046-5052
ISSN:
1932-7455
Subject:
polyethylene glycol,   etc   ; ambient temperature; carbonates; crystallization; electrochemistry; electrolytes; solvents;     Show all 7 Subjects
Abstract:
... Electrolytes based on new binary solvent mixtures and well-known salts (LiTDI or LiPF₆) show no signs of crystallization, even when reaching extremely low temperatures such as −70 °C. This work involves studying mixtures of poly(ethylene glycol)s (both PEG350ME and PEG500DME) with ethylene carbonate. The new electrolytes derived from these mixtures display rather high conductivity values (around 2 ...
DOI:
10.1021/acs.jpcc.9b10655

18. Elimination of Unreacted Acrylate Double Bonds in the Polymer Networks of Microparticles Synthesized via Flow Lithography

Author:
Moon, Hyun June; Ku, Minhee; Roh, Yoon Ho; Lee, Hyun Jee; Yang, Jaemoon; Bong, Ki Wan
Source:
Langmuir 2020 v.36 no.9 pp. 2271-2277
ISSN:
1520-5827
Subject:
polyethylene glycol,   etc   ; anisotropy; chemical bonding; cytotoxicity; geometry; microparticles;     Show all 6 Subjects
Abstract:
... Flow lithography (FL), a versatile technique used to synthesize anisotropic multifunctional microparticles, has attracted substantial interest, given that the resulting particles with complex geometries and multilayered biochemical functionalities can be used in a wide variety of applications. However, after this process, there are double bonds remaining from the cross-linkable groups of monomers. ...
DOI:
10.1021/acs.langmuir.9b02737

19. Nanoconfinement and Salt Synergistically Suppress Crystallization in Polyethylene Oxide

Author:
Zhang, Zheng; Ding, Junjun; Ocko, Benjamin M.; Lhermitte, Julien; Strzalka, Joseph; Choi, Chang-Hwan; Fisher, Frank T.; Yager, Kevin G.; Black, Charles T.
Source:
Macromolecules 2020 v.53 no.4 pp. 1494-1501
ISSN:
1520-5835
Subject:
polyethylene glycol,   etc   ; ambient temperature; crystal structure; crystallization; electrolytes; salts;     Show all 6 Subjects
Abstract:
... Suppressing the crystallization of polyether-based solid electrolytes is a widely sought-after strategy to improve ionic conductivity. We report the effects of nanoconfinement on polyethylene oxide electrolytes. We find that neat polyethylene oxide responds to nanoconfinement by adopting a preferred orientation yet is able to crystallize even in nanoconfinement volumes with widths as small as 8 nm ...
DOI:
10.1021/acs.macromol.9b01725

20. Self-Assembly of Bottlebrush Block Copolymers into Triply Periodic Nanostructures in a Dilute Solution

Author:
Ma, Hyunji; Kim, Kyoung Taek
Source:
Macromolecules 2020 v.53 no.2 pp. 711-718
ISSN:
1520-5835
Subject:
polyethylene glycol,   etc   ; composite polymers; hydrophilicity; micelles; nanotubes; polystyrenes; topology;     Show all 7 Subjects
Abstract:
... Bottlebrush block copolymers (BBCPs) exhibit a distinct brush-like topology, which extends their conformations and, consequently, limits chain–chain entanglement in bulk forms and in concentrated solutions. These characteristics make them attractive building blocks to create well-defined nanostructures with large periodicities by self-assembly. However, self-assembly of BBCPs into periodic nanostr ...
DOI:
10.1021/acs.macromol.9b01662