Plasma treatment effects on bulk properties of polycaprolactone nanofibrous mats fabricated by uncommon AC electrospinning: A comparative study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24410%2F20%3A00007757" target="_blank" >RIV/46747885:24410/20:00007757 - isvavai.cz</a>

Alternative codes found

RIV/46747885:24510/20:00007757

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0257897220308720" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0257897220308720</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.surfcoat.2020.126203" target="_blank" >10.1016/j.surfcoat.2020.126203</a>

Result language

angličtina

Original language name

Plasma treatment effects on bulk properties of polycaprolactone nanofibrous mats fabricated by uncommon AC electrospinning: A comparative study

Original language description

In this work, uncommon ACES was used to fabricate PCL ENMs making use of different solvent systems (F, FA, and FAA). Afterwards, the ENMs were exposed to a plasma surface treatment using a DBD at medium pressure with varying treatment time and discharge gas (argon and nitrogen). AC spinnability and plasma treatment effects on wettability, morphology, surface functional groups, crystallite size, and crystallinity of F-PCL, FA-PCL, and FAA-PCL ENMs were investigated for the first time. Results first revealed that the spinnability and consequently the nanofiber morphology were influenced by the used solvent systems while maintaining other electrospinning parameters: (1) the fiber diameter was found to increase in the following order: F-PCL, FA-PCL, and FAA-PCL and (2) the F-PCL and FAA-PCL samples consisted of nicely elongated beadless fibers, while the FA-PCL samples were found to still contain some beaded fibers. Argon and nitrogen DBD plasma treatments were observed to incorporate polar oxygen- or nitrogen-containing functional groups on the ENM surfaces respectively without modifying the morphological properties of the PCL samples. This functional group grafting in turn resulted into a significant increase in the surface wettability of F-PCL, FA-PCL, and FAA-PCL ENMs with WCA values decreasing from 130°–136° to 35°–48° depending on the used discharge gas and solvent system. DSC and FTIR analysis also revealed that the crystallinity degree of PCL ENMs was not significantly affected (except for the Xc value of FA-PCL) by the performed plasma treatments. On the other hand, the crystallinity degree of the pristine PCL ENMs was influenced by the used solvent system. The F-PCL and FA-PCL crystallinity degree were higher than in the case of FAA-PCL due to the hydrolytic behavior of formic acid and acetic acid. The melting temperature of F-PCL and FA-PCL was not changed upon plasma treatment nor by the used solvent system which could be attributed to the unchanged crystallite size. In contrast, the melting temperature of FAA-PCL was slightly altered by the performed plasma treatments due to an increasing crystallite size. The gathered results thus reveal that the performed plasma treatments can strongly enhance the surface wettability of PCL ENMs without strongly affecting their bulk properties. Consequently, plasma-treated PCL ENMs can be successful in multiple biomedical and tissue engineering applications, where high surface wettability is required to allow sufficient cell adhesion and proliferation.

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

20506 - Coating and films

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2020

Confidentiality

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

Name of the periodical

Surface and Coatings Technology

ISSN

0257-8972

e-ISSN

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Volume of the periodical

399

Issue of the periodical within the volume

OCT

Country of publishing house

CH - SWITZERLAND

Number of pages

11

Pages from-to

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UT code for WoS article

000563807700073

EID of the result in the Scopus database

2-s2.0-85088655617