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Azzam, F., Chaunier, L., Moreau, C., Lourdin, D., Bertoncini, P. & Cathala, B. (2017) Relationship between Young's Modulus and Film Architecture in Cellulose Nanofibril-Based Multilayered Thin Films. Langmuir, 33 4138–4145. 
Added by: Richard Baschera (2017-07-07 14:52:49)   Last edited by: Richard Baschera (2017-07-07 14:54:06)
Type de référence: Article
DOI: 10.1021/acs.langmuir.7b00049
Numéro d'identification (ISBN etc.): 0743-7463
Clé BibTeX: Azzam2017
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Catégories: PMN
Créateurs: Azzam, Bertoncini, Cathala, Chaunier, Lourdin, Moreau
Collection: Langmuir
Consultations : 11/409
Indice de consultation : 3%
Indice de popularité : 0.75%
Young's moduli of cellulose nanofibril (CNF)-poly(allylamine hydrochloride) (PAH) multilayered thin films were measured using strain-induced elastic buckling instability for mechanical measurements (SIEBIMM) and the quantitative nanomechanical mapping technique (PF-QNM). To establish the relationship between structure and mechanical properties, three types of films with various architectures were built using the layer-by-layer method by changing the ionic strength of the dipping solution. Both methods demonstrate that the architecture of a film has a strong impact on its mechanical properties even though the film has similar cellulose content, emphasizing the role of the architecture. Films with lower porosity (Phi(air) = 0.34) and a network display the highest Young's moduli (9.3 GPa), whereas others with higher and similar porosity (Phi(air) = 0.46-0.48) present lower Young's moduli (4.0-5.0 GPa). PF-QNM measurements indicate a reverse ranking that is probably indicative of the surface composition of the films.
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