海藻酸钠的疏水改性对其电纺性能的影响

doi:10.13218/j.cnki.csdc.2017.03.005

Abstract

Abstract: With poly(vinyl alcohol) (PVA) as spinning accessory,the electrospinning of hydrophobically modified sodium alginate derivative,alginate caprylamide (ACA),was studied.The colloidal and interfacial performance of ACA were characterized by transmission electron microscope,laser particle size and zeta potential analyzer,surface tensiometer,conductivity meter and rheometer.In addition,the morphology,functional group and crystalline structure of ACA/PVA electrospun nanofiber membranes were measured by scanning electron microscope,Fourier transform infrared spectroscopy and poly-crystalline X-ray diffraction.Experimental results showed that the hydrophobic modification upgrades flexibility of sodium alginate (SA) molecules,which can curlily form micelles with the hydrodynamic particle size of 324 nm (PDI=0.38) and zeta potential value of -43.8 mV.Furthermore,the hydrophobic modification and the addition of PVA as the spinning accessory can effectively reduce the surface tension and conductivity of SA solution,enhance chain entanglements and cause the morphology of ACA/PVA electrospun nanofiber membranes more regular and uniform.Spectroscopy analysis results showed that the hydrogen bonding force between ACA and PVA is still the main force to increase chain entanglements and thus realize the electrospinning.

Key words: alginate caprylamide, poly(vinyl alcohol), chain entanglement, electrospinning, electrospun nanofiber membrane

CLC Number:

O631.3

CHEN Xiu-qiong, YAN Hui-qiong, ZHANG Xue-qin, FENG Yu-hong, SHI Zai-feng, LIN Qiang. Effects of hydrophobic modification of sodium alginate on its electrospinning performance[J].China Surfactant Detergent & Cosmetics, 2017, 47(3): 142-147.

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Effects of hydrophobic modification of sodium alginate on its electrospinning performance

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