Abstract
Non-woven polylactide-natural rubber fiber materials with a rubber content of 5, 10 and 15 wt.% were obtained by electrospinning. The thermal, dynamic, and mechanical properties of the fibers were determined. It was shown that the average fiber diameter increased with adding of the NR content, while the linear and surface densities changed slightly. Using the differential scanning calorimetry, the thermal characteristics were obtained. It was found that the glass transition temperature of polylactide increased by 2–5 °C, and the melting temperature increased by 2–4 °C in the presence of natural rubber in the samples. By the method of electronic paramagnetic resonance at T = 50 and 70 °C it was determined that the mobility of the amorphous phase in PLA/NR fibers increased with the addition of NR. The adding of NR at a content of 15 wt.% increased the value of elongation at break by 3.5 times compared to pure PLA.
Highlights
In recent decades, the state of the environmental situation has led to the introduction of “green” polymers and composites based on them in various industries [1,2,3]
It was found that the glass transition temperature of polylactide increased by 2–5 ◦C, and the melting temperature increased by 2–4 ◦C in the presence of natural rubber in the samples
By the method of electronic paramagnetic resonance at T = 50 and 70 ◦C it was determined that the mobility of the amorphous phase in PLA/Natural rubber (NR) fibers increased with the addition of NR
Summary
The state of the environmental situation has led to the introduction of “green” polymers and composites based on them in various industries [1,2,3]. Film and fiber materials based on various polymers are finding new applications in medicine and the agricultural sector [4,5,6]. Samples of non-woven fiber material were obtained by electrospinning. Non-woven mats obtained by electrospinning have a high porosity, small pore size and a good interconnected pore structure, which facilitate the transport of air molecules and the capture of particles [10,11]. Based on these characteristics, many types of nonwoven fiber membranes were manufactured and studied [12,13,14]. The use of PLA for the creation of fiber and film composite materials reduces the dependence on oil [19]
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