Evidence map›Paper›PMID 34300992›Full record

ArticlePolymers2021

Chain-End Effects on Supramolecular Poly(ethylene glycol) Polymers.

Ana Brás, Ana Arizaga, Uxue Agirre, Marie Dorau, Judith Houston, Aurel Radulescu, Margarita Kruteva, Wim Pyckhout-Hintzen, Annette M Schmidt

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Polymers, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.5field-weighted citation impact, top 40% of its field
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

1 citing paper in PubMed, 9 citations in OpenAlex.

  1. Article
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

9 authors at 2 institutions in 1 country.

Ana BrásInstitute of Physical Chemistry, University of Cologne, 50939 Cologne, Germany.ORCID 0000-0002-5007-4994
Ana ArizagaInstitute of Physical Chemistry, University of Cologne, 50939 Cologne, Germany.
Uxue AgirreInstitute of Physical Chemistry, University of Cologne, 50939 Cologne, Germany.
Marie DorauInstitute of Physical Chemistry, University of Cologne, 50939 Cologne, Germany.
Judith HoustonJülich Centre for Neutron Science (JCNS-1) at Heinz Maier Leibnitz-Zentrum (MLZ), Forschungszentrum Jülich GmbH, 85748 Garching, Germany.
Aurel RadulescuJülich Centre for Neutron Science (JCNS-1) at Heinz Maier Leibnitz-Zentrum (MLZ), Forschungszentrum Jülich GmbH, 85748 Garching, Germany.ORCID 0000-0002-6050-0176
Margarita KrutevaJülich Centre for Neutron Science (JCNS-1), Forschungszentrum Jülich GmbH, 52428 Jülich, Germany.
Wim Pyckhout-HintzenJülich Centre for Neutron Science (JCNS-1), Forschungszentrum Jülich GmbH, 52428 Jülich, Germany.ORCID 0000-0002-1142-359X
Annette M SchmidtInstitute of Physical Chemistry, University of Cologne, 50939 Cologne, Germany.ORCID 0000-0002-7284-7847
University of Cologne · DEForschungszentrum Jülich · DE

Funding

Deutsche Forschungsgemeinschaft BR 5301 / 1
6 · The paper itself

Abstract

In this work we present a fundamental analysis based on small-angle scattering, linear rheology and differential scanning calorimetry (DSC) experiments of the role of different hydrogen bonding (H-bonding) types on the structure and dynamics of chain-end modified poly(ethylene glycol) (PEG) in bulk. As such bifunctional PEG with a molar mass below the entanglement mass Me is symmetrically end-functionalized with three different hydrogen bonding (H-bonding) groups: thymine-1-acetic acid (thy), diamino-triazine (dat) and 2-ureido-4[1H]-pyrimidinone (upy). A linear block copolymer structure and a Newtonian-like dynamics is observed for PEG-thy/dat while results for PEG-upy structure and dynamics reveal a sphere and a network-like behavior, respectively. These observations are concomitant with an increase of the Flory-Huggins interaction parameter from PEG-thy/dat to PEG-upy that is used to quantify the difference between the H-bonding types. The upy association into spherical clusters is established by the Percus-Yevick approximation that models the inter-particle structure factor for PEG-upy. Moreover, the viscosity study reveals for PEG-upy a shear thickening behavior interpreted in terms of the free path model and related to the time for PEG-upy to dissociate from the upy clusters, seen as virtual crosslinks of the formed network. Moreover, a second relaxation time of different nature is also obtained from the complex shear modulus measurements of PEG-upy by the inverse of the angular frequency where

Indexed as

2-ureido-4[1H]-pyrimidinonediamino-triazineFlory–Huggins interaction parameterfunctionalizationheterocomplementaryhomocomplementaryhydrogen bondingsupramolecular polymerthymine-1-acetic acid

Identifiers

PMID34300992
PMCPMC8309292
OpenAlexW3183077964

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.