文章信息/Info

Title:

Progress of Electrospun Nano-Fibers with Porous Structure

作者:

劉照偉; 湯玉斐; 趙 康

(西安理工大學材料科學與工程學院，陜西 西安 710048)

Author(s):

LIU Zhaowei; TANG Yufei; ZHAO Kang

(School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, China)

關鍵詞:

靜電紡絲; 納米纖維; 多孔纖維; 孔結構可控; 比表面積

Keywords:

Electrospinning;  nanofibers;  porous fibers;  pore structure controlled;  specific surface area

DOI:

10.7502/j.issn.1674-3962.2018.06.02

文獻標志碼:

A

摘要:

靜電紡絲是一種能夠制備連續納米纖維的簡單、方便、高效的方法，在組織工程、藥物緩釋和催化劑負載等領域廣泛應用，近年來該方法制備的表面或內部具有多孔結構的納米纖維因具有超高的比表面積而備受關注。本文綜述了電紡多孔納米纖維的制備方法和成孔機理，詳細討論了液相分離致孔和固相分離致孔的研究現狀和未來發展方向。從紡絲液溶劑性質展開，結合混溶、控溫、控濕等實驗條件，分析了射流固化速率和溶劑揮發速率的相互作用關系，并提出多手段共用制備孔結構可控的多孔納米纖維的方法。

Abstract:

Electrospinning is a simple, convenient and efficient technique to fabricate continuous nanofibers, which can be applied to the fields of tissue engineering, drug delivery and catalyst loading widely. In recent years, much attention has been paid to electrospun nano-fibers with porous structure due to their ultrahigh specific surface area. Preparation methods and pore forming mechanism of nano-fibers with porous structure were reviewed. The progress and development trend of nano-fibers with porous structure caused by liquid phase separation and solid phase separation were discussed in detail. The interaction between consolidation rate of jets and evaporation rate of solvents was analyzed based on the solvent properties and the experimental conditions, such as miscibility, temperature and humidity. Methods for preparing pore structure controlled nano-fibers by multi-way were also proposed.