1 152 148 148 11 11 170 170 10 ten 149 7 149 7173 11 173 11 20 192 192 20158 9 158 17 1 19 1 22 1 22 1 20 1 21 1 20 1 20 77 78 78 83 77 7082 77 78 78 83 77 70SEM photos in the cross-sections of PUR foams modified with FA
1 152 148 148 11 11 170 170 ten ten 149 7 149 7173 11 173 11 20 192 192 20158 9 158 17 1 19 1 22 1 22 1 20 1 21 1 20 1 20 77 78 78 83 77 7082 77 78 78 83 77 70SEM pictures of the cross-sections of PUR foams modified with FA and M are given in SEM images ofperformed analysisof PUR foams modified with FA both M are of filler did Figure 4. The the cross-sections pointed out that the addition of and forms provided in Figure disruptperformed evaluation pointed out that the addition ofaboth varieties of filler cells’ not four. The the cellular structure with the PUR matrix; Moveltipril Technical Information however, decrease in closed did not disrupt the cellular reaching approx.PUR matrix; however, a reduce in closed content material was observed, structure with the 84 . cells’ content was observed, reaching approx. 84 .Materials 2021, 14,Materials 2021, 14, x FOR PEER Assessment 7 of7 of(a)(b)(c)(d)(e)(f)(g)(h)Figure 4. SEM images in the cross-sections of PUR foams modified with five (a,b), ten (c,d), 15 (e,f), and 20 wt. (g,h) of FA (left column) and M (correct column). Magnitudes 00.Bigger particles of each FA and M impaired the PUR cellular structure, resulting in opening cell walls [22,40]. The polyhedron shape from the cells was observed. Fillers wereMaterials 2021, 14, x FOR PEER REVIEW8 ofFigure four. SEM photos from the cross-sections of PUR foams modified with five (a,b), 10 (c,d), 15 (e,f), and 20 wt. (g,h) of FA (left column) and Components 2021, 14, 6604 M (right column). Magnitudes 00.eight ofBigger particles of both FA and M impaired the PUR cellular structure, resulting in opening cell walls [22,40]. The polyhedron shape from the cells was observed. Fillers were evenly dispersed within a polymer matrix and placed among cells (Figure A uniform evenly dispersed inside a polymer matrix and placed in between cells (Figure four). A uniform cellular structure characterized all composite supplies. The Feret diameter SD didn’t cellular structure characterized all composite components. The Feret diameter SD did not exceed 10 with the typical values. Each cellular diameters were comparable, indicating exceed 10 on the typical values. Both cellular diameters have been comparable, indicating no no favorable development path. Strut thicknesses have been roughly 20 had been not favorable development direction. Strut thicknesses had been approximately 20 m and and were not dependent on composite composition. Incorporating both forms of filler caused a dependent on the the composite composition. Incorporating both varieties of fillercaused a reduce in vertical and YC-001 MedChemExpress horizontal Feret diameters, which suggested that FA particles and lower in vertical and horizontal Feret diameters, which suggested that FA particles and M acted as nucleation sites for the duration of the foam formation [22,39]. Furthermore, an increase in M acted as nucleation web-sites throughout the foam formation [22,39]. Furthermore, a rise in viscosity on the PUR + FA and PUR + M mixtures and an growing filler content material hindered viscosity of the PUR + FA and PUR + M mixtures and an increasing filler content material hindered cell development through foam formation [22,41]. cell development through foam formation [22,41].three.two. Chemical Structure and Mechanical Properties 3.two. Chemical Structure and Mechanical Properties The IR spectra of pristine PUR foam, as received FA, and composite foam material The IR spectra of pristine PUR foam, as received FA, and composite foam material PUR + FA20p were compared (Figure five, Table 3)), at the same time as the analogical spectra of PUR + FA20p have been compared (Figure five, Table three)), at the same time a.
