Inkjet printability assessment of weakly viscoelastic fluid: A semidilute polyvinylpyrrolidone solution ink case study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F21%3A63544638" target="_blank" >RIV/70883521:28610/21:63544638 - isvavai.cz</a>

Result on the web

<a href="https://pubs.acs.org/doi/10.1021/acs.langmuir.1c01010" target="_blank" >https://pubs.acs.org/doi/10.1021/acs.langmuir.1c01010</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.langmuir.1c01010" target="_blank" >10.1021/acs.langmuir.1c01010</a>

Result language

angličtina

Original language name

Inkjet printability assessment of weakly viscoelastic fluid: A semidilute polyvinylpyrrolidone solution ink case study

Original language description

Here, we present an integrated approach to the weakly viscoelastic fluid printability assessment by using global dimensionless criteria (DC). The problem was studied on a model semidiluted polyvinylpyrrolidone water-based ink. For the study purpose, the ink composition was kept as simple as possible. First, the solution density, viscosity, and surface tension were determined. Obtained data were used for testing limitations of DC printability diagrams already available for Newtonian fluids. A replotted version of the original Kim and Baek&apos;s map was developed emphasizing the importance of surface tension in the drop formation process. Another set of DC (e.g., Ec and De) was also used for a real evaluation of the viscoelasticity effect on both jetting conditions and drop formation. The polymer relaxation time as a crucial parameter for viscoelasticity was shown to be calculated using the Kuhn segment length rather than from Zimm and Rouse theories for diluted polymer systems. Then, a two-dimensional diagram using four DC (Oh and De with Ec and El as parameters) is proposed based on the famous McKinley&apos;s work. The diagram describes the interplay of possible forces responsible for filament thinning and breakup processes. Obtained results were supported by further experiments involving drop ejection and formation, determination of critical polymer concentration, and others. The proposed diagram promises a useful initial step in further investigations of viscoelasticity of polymer compounds by inkjet printing.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10404 - Polymer science

Project

—

Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Langmuir

ISSN

0743-7463

e-ISSN

—

Volume of the periodical

37

Issue of the periodical within the volume

28

Country of publishing house

US - UNITED STATES

Number of pages

12

Pages from-to

8557-8568

UT code for WoS article

000695298500020

EID of the result in the Scopus database

2-s2.0-85111250701