Fabrication of Polyethylcyanoacrylate Hollow Nanofibers†

doi:10.7503/cjcu20140655

Abstract

Abstract:

Poly(ethyl α-cyanoacrylate)(PECA) hollow nanofibers were fabricated directly by means of one-pot monomer solution casting method. The diameter of the PECA nanofibers was 50—100 nm. The whole process was simple, rapid and took place at room temperature. Three solution systems ECA/TiCl₄/CHCl₃, ECA/HCl/acetone and ECA/HCOOH/CHCl₃ were investigated to study the influence on the morphology and size of the achieved PECA nanofibers. The mechanism of the formation of the nanofibers were proposed. By adjusting the solution system and environment, PECA with different morphology could be obtained. The PECA fibers were hydrophobic. This method not only can be used on flat surfaces, but also on surfaces with rough structures. The PECA fiber-structured coatings could offer substrates hydrophobic ability.

Key words: Ethyl cyanoacrylate, Nanofiber, Polymer, Hollow structure

CLC Number:

O631

TrendMD:

ZHANG Liang, LI Xiaofeng, WANG Dongrui, ZHAO Ning, DANG Zhimin, XU Jian. Fabrication of Polyethylcyanoacrylate Hollow Nanofibers^†[J]. Chem. J. Chinese Universities, 2015, 36(1): 195.

Figures/Tables 6

Fig.1 SEM images of the hollow-structured PECA nanofibers prepared in ECA/TiCl4/CHCl3 solution

Fig.2 TEM images of the hollow-structured PECA nanofibers prepared from ECA/TiCl4/CHCl3 solution(A) and SEM image of PECA film obtained from ECA/CHCl3 solution without TiCl4(B)

Fig.3 SEM images of PECA nanofibers obtained from ECA/HCl/acetone solution(A, B) and ECA/HCOOH/CHCl3 solution(C, D) (B) and (D) are enlarged images of (A) and (C), respectively.

Fig.4 FTIR spectra of PECA nanofibers prepared in HCl/acetone(a), TiCl4/CHCl3(b) and HCOOH/CHCl3(c)

Fig.5 SEM images of PECA with different morphology (A) nanofibers obtained from ECA/ TiCl4/CHCl3 solution; (B) flat PECA film. The insets are images of water drops on the corresponding films.

Fig.6 SEM images of freeze-dried PVA aerogel(A), PECA nanofibers coated PVA gel(B) The inset is the water drop on the PECA nanofibers coated PVA aerogel.

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