Preparation and properties of composite phase-change nanofiber membrane by improved bubble electrospinning

Abstract

Bubble electrospinning technology can be used for mass production of nanofibers, it has been widely used in polymer electrospinning such as PVA, PVP and PAN, but there are no reports on the preparation of composite phase-change nanofibers by this method. In this paper, the transparent solution 1(PEG was put into formic acid according to the mass fraction of 60%) was mixed with the transparent solution 2 (PA66 was put into formic acid according to the mass fraction of 15%) according to the mass ratio of 15:85 , 25:75 , 35:65 and 45:55 to prepare four kinds of spinning solutions. And the pure PA66 nanofiber membrane(PNM) and PA66/PEG composite nanofiber membrane(PGCNM) were fabricated by the improved bubble electrospinning device on the basis of bubble electrospinning device invented by He Jihuan etc Also we analyzed their surface microstructure and tested their mechanical properties, thermal properties and molecular structure. The lower the content of PA66, the smaller the adhesion granular matter on the nanofiber surface and the thicker the diameter of the nanofiber, but the surface of the nanofiber is more smooth. The PGNCM appeared double absorption peak at 1515.5 cm−1 and 1642 cm−1 and existed weak absorption peak at 3298 cm−1 ∼ 3302 cm−1. The tensile strength and the elongation at break of the PGNCM was less than that of the PNM. The hot decomposition process of the PGNCM was composed the melting exothermic process of PEG and PA66. When the mixed ratio between PA66 and PEG was 15:85, the decomposition rate of residues between 210 ∼ 310 °C was the fastest.

Application of Solution Blow Spinning for Rapid Fabrication of Gelatin/Nylon 66 Nanofibrous Film

“…After blending with PA66, the elongation at break of the GA film increased substantially from 7.98% to 30.36% at the weight ratio of 1:1 (GA/PA66), and the tensile strength of the GA film were considerably enhanced from 0.03 MPa up to 1.42 MPa, which was 48 times higher, but there was a certain range of differences compared with pure PA66 nanofiber film. This might be due to the fact that the reduction of the diameter of nanofibers led to an increase in the density of inter-fiber alignment, and the uniformity of the nanofiber film might be improved [41]. In a similar study of Zhang et al [21], they found that the mechanical properties of the GA films was also improved with the addition of poly(ε-caprolactone).…”

Confined Crystallization Polyether-Based Flexible Phase Change Film for Thermal Management

“…The form-stable composite phase change materials were prepared by free radical polymerization . Put PEG and mPEGMA in an empty bottle in a certain proportion, heat, and stir at 80 °C for 30 min until PEG is completely dissolved and mixed with mPEGMA uniformly.…”

Multifunctional electrospun PP/PVDF‐HFP/MIL‐53(Fe) composite nanofiber membrane for air filtration and dye degradation

“…The bubble electrospinning method mimics spider spinning through the action of electrostatic and air flow to prepare nanofibers and can improve the performance of the prepared nanofiber. 18,19 Therefore, the preparation and application of nanofiber air filter materials are widely studied.…”

“…Nanofiber materials can be prepared by various methods, such as solution electrospinning, 13,14 melt electrospinning, 15 bubble electrospinning, 16,17 and so forth. The bubble electrospinning method mimics spider spinning through the action of electrostatic and air flow to prepare nanofibers and can improve the performance of the prepared nanofiber 18,19 . Therefore, the preparation and application of nanofiber air filter materials are widely studied.…”