access icon free Polyacrylamide modification of halloysite nanotubes surface by inverse emulsion polymerisation and their application in reinforcing PTFE

© The Institution of Engineering and Technology
Received 21/05/2018, Accepted 01/10/2018, Revised 10/09/2018, Published 16/01/2019

This work exploited the abundant hydroxyl group of halloysite nanotubes (HNTs) to induce acrylamide-polymerisation modification by inverse emulsion (water-in-oil), resulting in polyacrylamide (PAM)-modified HNTs. The structure and dispersion properties of the modified HNTs were analysed by a series of characterisations. As a promising application of HNTs, polytetrafluoroethylene (PTFE) reinforced with HNTs-PAM was prepared. The mechanical and tribological properties of the HNTs-PAM/PTFE were intensively studied. The results show that the volume wear rate of the HNTs-PAM/PTFE reduced 97.3% relative to PTFE. The wear resistance of HNTs in filling PTFE was desirable.

Inspec keywords: aluminium compounds; nanofabrication; wear resistance; nanocomposites; surface treatment; nanotubes; polymerisation; emulsions; filled polymers; nanomechanics

Other keywords: polytetrafluoroethylene; structural properties; volume wear rate; dispersion properties; mechanical properties; tribological properties; wear resistance; acrylamide-polymerisation modification; inverse emulsion polymerisation; polyacrylamide modification; modified HNTs; reinforcing PTFE; Al2(OH)4Si2O5H2O; abundant hydroxyl group; HNTs-PAM-PTFE; halloysite nanotube surface

Subjects: Low-dimensional structures: growth, structure and nonelectronic properties; Preparation of reinforced polymers and polymer-based composites; Friction, lubrication, and wear; Other methods of nanofabrication; Polymer reactions and polymerization; Tribology; Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials; Corrosion, oxidation, etching, and other surface treatments

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