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GIUSEPPE CAVALLARO

Halloysite nanotubes as sustainable nanofiller for paper consolidation and protection

  • Authors: Cavallaro, G.; Lazzara, G.; Milioto, S.; Parisi, F.
  • Publication year: 2014
  • Type: Articolo in rivista (Articolo in rivista)
  • Key words: DMA; Halloysite; Paper; TG; Condensed Matter Physics; Physical and Theoretical Chemistry
  • OA Link: http://hdl.handle.net/10447/227997

Abstract

We investigated the filling process of cellulose-based paper with natural clay nanotubes and their mixtures with hydroxypropyl cellulose (HPC) that is commonly used as glue and consolidant for degraded paper. A comprehensive characterization of the materials was carried out through morphology, wettability, thermal degradation, and tensile properties. The treatment with halloysite nanotubes generated a decrease of the paper mechanical performance and did not alter the thermal properties. The co-presence of HPC and nanoparticles generated a more uniform nanotubes distribution in the paper fibrous structure and a significant enhancement of both the mechanical properties and the surface hydrophobicity with respect to the HPC treatment. This work proposes the use of halloysite/HPC mixture in a new protocol for paper consolidation and represents a starting point to develop, with a biocompatible approach, smart composite material in which the nanotube cavity is filled with active species for paper protection or active response to external stimuli. © 2014 Akadémiai Kiadó, Budapest, Hungary.