Evidence map›Paper›PMID 33276553›Full record

ArticlePolymers2020

Formation of Water-Free Cavity in the Process of Nafion Swelling in a Cell of Limited Volume; Effect of Polymer Fibers Unwinding.

Barry W Ninham, Polina N Bolotskova, Sergey V Gudkov, Yulchi Juraev, Mariya S Kiryanova, Valeriy A Kozlov, Roman S Safronenkov, Alexey V Shkirin, Elena V Uspenskaya, Nikolai F Bunkin

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Polymers, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

7 citing papers in PubMed.

  1. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Barry W NinhamDepartment of Applied Mathematics, The Australian National University, Acton, ACT 2601, Australia.
Polina N BolotskovaDepartment of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya str. 5, 105005 Moscow, Russia.
Sergey V GudkovProkhorov General Physics Institute of the Russian Academy of Sciences, Vavilova str. 38, 119991 Moscow, Russia.ORCID 0000-0002-8814-6906
Yulchi JuraevDepartment of Theoretical Physics and Quantum Electronics, Samarkand State University, University blv. 15, Samarkand City 140104, Uzbekistan.
Mariya S KiryanovaDepartment of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya str. 5, 105005 Moscow, Russia.
Valeriy A KozlovDepartment of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya str. 5, 105005 Moscow, Russia.ORCID 0000-0003-3291-4395
Roman S SafronenkovDepartment of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya str. 5, 105005 Moscow, Russia.
Alexey V ShkirinProkhorov General Physics Institute of the Russian Academy of Sciences, Vavilova str. 38, 119991 Moscow, Russia.
Elena V UspenskayaDepartment of Pharmaceutical and Toxicological Chemistry, RUDN University, Miklukho-Maklaya str. 6, 117198 Moscow, Russia.
Nikolai F BunkinDepartment of Fundamental Sciences, Bauman Moscow State Technical University, 2-nd Baumanskaya str. 5, 105005 Moscow, Russia.ORCID 0000-0002-6893-1739

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

When Nafion swells in water, colloidal particles are repelled from the polymer surface; this effect is called the formation exclusion zone (EZ), and the EZ size amounts to several hundred microns. However, still no one has investigated the EZ formation in a cell whose dimension is close to the EZ size. It was also shown that, upon swelling in water, Nafion fibers "unwind" into the water bulk. In the case of a cell of limited volume, unwound fibers abut against the cell windows, and water is completely pushed out from the region between the polymer and the cell window, resulting in a cavity appearance. The temporal dynamics of the collapse of this cavity was studied depending on the cell size. It is shown that the cavity formation occurs due to long-range forces between polymer strands. It turned out that this scenario depends on the isotopic composition of the water, ionic additives and water pretreatment. The role of nanobubbles in the formation and collapse of the cavity were analyzed. The results obtained allowed us to conclude that the EZ formation is precisely due to the unwinding of polymer fibers into the liquid bulk.

Indexed as

deuterium-depleted waterFourier transform IR spectroscopyNafionswelling of polymerswetting angle

Identifiers

PMID33276553
PMCPMC7761572

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.