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Research Article

Effect of Modification of Flax Fibers with Silanes and Polysiloxanes on the Properties of PLA-Based Composites

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Figures & data

Table 1. All composites prepared in the research.

Figure 1. Pictures of test specimens: (a) dimensions of test specimen according to ASTM D-1708-18 (ASTM D-1708-18 Citationn.d.), (b) composite – polylactic with raw flax fibers, (c) polylactic acid.

Figure 1. Pictures of test specimens: (a) dimensions of test specimen according to ASTM D-1708-18 (ASTM D-1708-18 Citationn.d.), (b) composite – polylactic with raw flax fibers, (c) polylactic acid.

Figure 2. Scanning electron microscopy images of composites with flax fibers without mercerization process and flax fibers with mercerization process in two resolution: 500 and 1.0 k.

Figure 2. Scanning electron microscopy images of composites with flax fibers without mercerization process and flax fibers with mercerization process in two resolution: 500 and 1.0 k.

Figure 3. Thermogravimetric analysis of flax/PLA composites in the range of 200–500°C: (a) composites with flax fibers without mercerization process, (b) composites with flax fibers with mercerization process. The solid lines represent the TGA curves, while the dotted lines represent the DTG curves.

Figure 3. Thermogravimetric analysis of flax/PLA composites in the range of 200–500°C: (a) composites with flax fibers without mercerization process, (b) composites with flax fibers with mercerization process. The solid lines represent the TGA curves, while the dotted lines represent the DTG curves.

Table 2. Thermal stability results of flax fibers.

Figure 4. Microcalorimetric results of: (a) composites with flax fibers without mercerization process, (b) composites with flax fibers with mercerization process.

Figure 4. Microcalorimetric results of: (a) composites with flax fibers without mercerization process, (b) composites with flax fibers with mercerization process.

Figure 5. Tensile properties of PLA/flax composites.

Figure 5. Tensile properties of PLA/flax composites.

Figure 6. Stress–strain curves for PLA/flax fibers composites: (a) flax fibers without mercerization process, (b) flax fibers with mercerization process.

Figure 6. Stress–strain curves for PLA/flax fibers composites: (a) flax fibers without mercerization process, (b) flax fibers with mercerization process.