Polymer Nanocomposite Fibers via Self-Assembly

A graphene/polyaniline (rGO/PANi) nanocomposite was synthesized by solution blending method and deposited on to a nylon-6 membrane via vacuum assisted self-assembly (VASA) method to fabricate a flexible material applied as a chemoresistive gas sensor for trimethylamine (TMA). The morphological and structural characterization of surfaced adsorbed polymer nanocomposite was carried out by FT-IR, SEM, UV-Vis and surface profilometry. While, electrical property was carried out by four-point probe measurement. Prepared rGO/PANi nanocomposite has a percolation threshold around 0.40% vol. fraction, with a conductivity of 8.28 S/m (rsd = 3.0%, n=3) and thickness around 38.58 μm (rsd = 7.63%, n=3. The composite sensor exhibited linear range from 45 to 230 mg/L (r2= 0.9962) and the calculated limit of detection was 25.30 mg/L. It exhibited a repeatable response to TMA gas.

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Preparation and Electrical Properties of the MWNT/Polymer Nanocomposite Fibers

MRS Proceedings ◽

10.1557/proc-0963-q20-24 ◽

2006 ◽

Vol 963 ◽

Author(s):

Guan Wang ◽

Zhongkui Tan ◽

Xueqing Liu ◽

Vladimir Samuilov ◽

Michael Dudley

Keyword(s):

Carbon Nanotubes ◽

Electrical Properties ◽

Composite Nanofibers ◽

Polymer Nanocomposite ◽

Composite Fiber ◽

Cooh Group ◽

Temperature Dependent ◽

Multiwalled Carbon ◽

Functionalized Carbon Nanotubes ◽

Nanocomposite Fibers

ABSTRACTAn oxidation method has been applied to functionalize multiwalled carbon nanotubes with carboxylic acid (-COOH) group. Functionalized carbon nanotubes (f-MWNT) were used for the fabrication of conducting nanocomposite fibers by electrospinning, in comparison with the composite nanofibers made of un-functionalized carbon nanotubes (u-MWNT). Our results showed that the addition of f-MWNTs into polymer solution could increase the compatibility of MWNTs with the polymer matrix, and thus result in composite nanofibers with uniform diameters. Alignment of the composite nanofibers was achieved by using a rotating drum as the collector. F-MWNTs were found to align parallel to the axis direction of the nanofibers. Temperature-dependent DC electrical properties of a single composite fiber were investigated by a two-probe method. It was shown that the conductivity of the material could be significantly improved above a percolation threshold. The conductivity could be of ten orders of magnitude higher than the pure PVAc.

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A supramolecular approach towards strong and tough polymer nanocomposite fibers

RSC Advances ◽

10.1039/c8ra01066h ◽

2018 ◽

Vol 8 (19) ◽

pp. 10361-10366 ◽

Cited By ~ 1

Author(s):

Xiaojuan Zhao ◽

Hongzhi Zheng ◽

Dan Qu ◽

Haijing Jiang ◽

Wei Fan ◽

...

Keyword(s):

Polymer Nanocomposite ◽

Aqueous System ◽

Flexible Polymer ◽

Nanocomposite Fibers ◽

Supramolecular Ensemble

Strong, tough and flexible polymer nanocomposite fibers can be approached by electrospinning of supramolecular ensemble of CNT–AIE–CNC/PVA in an aqueous system, which could be used for sensing.

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