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. 2022 Mar 23;14(7):1299.
doi: 10.3390/polym14071299.

Preparation, Properties and Water Dissolution Behavior of Polyethylene Oxide Mats Prepared by Solution Blow Spinning

Miguel Ángel Lorente  1 , Gustavo González-Gaitano  2 , Javier González-Benito  1
Affiliations

Preparation, Properties and Water Dissolution Behavior of Polyethylene Oxide Mats Prepared by Solution Blow Spinning

Miguel Ángel Lorente et al. Polymers (Basel). .

Abstract

The relationship between processing conditions, structure and morphology are key issues to understanding the final properties of materials. For instance, in the case of polymers to be used as scaffolds in tissue engineering, wound dressings and membranes, morphology tuning is essential to control mechanical and wettability behaviors. In this work, the relationship between the processing conditions of the solution blow spinning process (SBS) used to prepare nonwoven mats of polyethylene oxide (PEO), and the structure and morphology of the resulting materials are studied systematically, to account for the thermal and mechanical behaviors and dissolution in water. After finding the optimal SBS processing conditions (air pressure, feed rate, working distance and polymer concentration), the effect of the solvent composition has been considered. The structure and morphology of the blow spun fibers are studied as well as their thermal, mechanical behaviors and dissolution in water. We demonstrate that the morphology of the fibers (size and porosity) changes with the solvent composition, which is reflected in different thermal and mechanical responses and in the dissolution rates of the materials in water.

Keywords: materials characterization; morphology; polyethylene oxide; polymer dissolution; solution blow spinning.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Viscosity of the PEO solutions as a function of concentration and composition of the solvent mixture.
Figure 2
Figure 2
ATR-FTIR spectra of the blow spun PEO-based obtained from 10% wt solutions at different compositions Chl:Ac.
Figure 3
Figure 3
X-ray diffractograms of the blow spun PEO-based obtained from 10% wt solutions at different compositions Chl:Ac.
Figure 4
Figure 4
DSC thermograms of blow spun PEO at different compositions Chl:Ac. First heating scan (left) and subsequent cooling scan (right).
Figure 5
Figure 5
FESEM images of the blow spun fibers at different magnifications. Columns (left to right) represent the magnification, 500×, 4000× and 8000×. Rows (top to bottom) correspond to PEO-46, PEO-55, PEO-64, PEO-73, PEO-82, PEO-91AND PEO-100.
Figure 6
Figure 6
Normalized orientation distributions of blow spun PEO fibers at different compositions Chl:Ac.
Figure 7
Figure 7
Young’s modulus of the blow spun PEO mats, with and without porosity correction.
Figure 8
Figure 8
Elastic-plastic behavior of the different PEO-based materials before (circles) and after (squares) considering porosity.
Figure 9
Figure 9
Set up for the dissolution tests.
Figure 10
Figure 10
Image analysis to monitor dissolution process of the PEO-based specimens.
Figure 11
Figure 11
Dissolution profiles of blow spun PEO mats at different solvent compositions Chl:Ac.
See this image and copyright information in PMC

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