Eco-friendly polymer nanocomposites designed for self-healing applications
| Autor: | Carlo Naddeo, Giuseppina Barra, Luigi Vertuccio, Liberata Guadagno, Elisa Calabrese, Marino Lavorgna, Andrea Sorrentino, Marialuigia Raimondo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Vinyl alcohol
Materials science Self-healing nanocomposites Polymers and Plastics Polymer nanocomposite 02 engineering and technology 010402 general chemistry 01 natural sciences Murexide chemistry.chemical_compound Biodegradable polymer Materials Chemistry Cellulose Nanocomposite Green materials Organic Chemistry Dynamic mechanical analysis Modified cellulose 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Chemical engineering Methyl cellulose Smart polymers 0210 nano-technology |
| Zdroj: | Polymer (Guildford) 223 (2021). doi:10.1016/j.polymer.2021.123718 info:cnr-pdr/source/autori:Guadagno, Liberata; Vertuccio, Luigi; Barra, Giuseppina; Naddeo, Carlo; Sorrentino, Andrea; Lavorgna, Marino; Raimondo, Marialuigia; Calabrese, Elisa/titolo:Eco-friendly polymer nanocomposites designed for self-healing applications/doi:10.1016%2Fj.polymer.2021.123718/rivista:Polymer (Guildford)/anno:2021/pagina_da:/pagina_a:/intervallo_pagine:/volume:223 |
| DOI: | 10.1016/j.polymer.2021.123718 |
| Popis: | Fully biodegradable self-healing nanocomposites were prepared by mixing carbon nanotubes (CNTs)-based carboxyl methyl cellulose (CMC), produced by chemical modification of cellulose, with a commercial biodegradable highly amorphous vinyl alcohol polymer (HAVOH) containing murexide salt. Damaged specimens were allowed to cure by simply touching the cutting sections in a controlled temperature and humidity environment (30 °C and 80%) for a period of 48 h. The healing efficiency of the samples, evaluated by the recovery of the “Storage Modulus” determined by dynamic-mechanical analysis (DMA) of healed samples, manifests a temperature-dependence behaviour. For temperatures above 50 °C, an almost complete recovery (100%) was observed for the sample of HAVOH containing a solubilized murexide salt. The presence of CNTs-based CMC imparts improved mechanical properties. Maximum values for healing efficiency were observed between 30 and 80 °C. |
| Databáze: | OpenAIRE |
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