ENEA-IRIS Open Archive è l’archivio della produzione scientifica dell'ENEA, realizzato con l'obiettivo di raccogliere, catalogare e rendere facilmente accessibili in rete i risultati della ricerca. Gli autori dell’ENEA provvedono a depositare le proprie pubblicazioni (articoli su rivista, presentazioni a congressi, report, ecc.). In particolare, quelle finanziate dalla Commissione Europea nell’ambito del programma H2020 (che prevede il deposito obbligatorio in un Repository), una volta caricate, vengono automaticamente importate dal portale europeo OpenAIRE. È possibile inserire, o importare direttamente dalle banche dati previste, le informazioni descrittive del documento e anche allegare, ove consentito dalla normativa sul diritto d'autore, il testo completo della pubblicazione.
ENEA-IRIS Open Archive utilizza la piattaforma IRIS (Institutional Research Information System) sviluppata da CINECA.
Utilizzo del sistema: Login riservato agli autori ENEA attraverso le credenziali ASIE - Prontuario d'uso - Guida completa - Contatti
EnglishThe γ-irradiation effects on cellulose structure and on its interaction with moisture were investigated. Pure cellulose paper samples were γ-irradiated in the range 0-1000 kGy. Particular attention was paid on the investigation at low absorbed doses (up to 10 kGy). Thermogravimetric analysis (TG-DTG) and Fourier Transform Infrared Spectroscopy (FTIR and ATR-FTIR) were used as complementary techniques to investigate the modifications induced by γ-irradiation on cellulose. The IR spectra confirm that the breakage of the glycosidic bonds and the formation of CO bonds are related to the oxidative degradation that is a function of the increase of the absorbed dose. At absorbed dose <10 kGy, TG-DTG data show that it is necessary to achieve higher temperature to degrade the polymeric structure. Concurrently, at the same conditions, a more stable and crystalline structure, due to cross-linking in the γ-irradiated cellulose, was correlated to the increase of the lateral crystallinity index (LCI). Aim of this work is to give a complete description of the effects induced by γ-irradiation on pure cellulose paper in a wide range of absorbed doses, with a particular attention to the modification of the cellulose-moisture interaction. A comparison between the ATR-FTIR spectra and Nuclear Magnetic Resonance Relaxation data has been reported. © 2013 Elsevier Ltd. All rights reserved.
| Titolo: | Structure modifications and interaction with moisture in γ-irradiated pure cellulose by thermal analysis and infrared spectroscopy | |
| Autori: | ||
| Data di pubblicazione: | 2013 | |
| Rivista: | ||
| Handle: | http://hdl.handle.net/20.500.12079/374 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
http://hdl.handle.net/20.500.12079/374
Copyright © 2021