REAL

Cellulose nanocrystal/amino-aldehyde biocomposite films

Nagy, Sebestyén and Csiszár, Emília and Kun, Dávid and Koczka, Béla (2018) Cellulose nanocrystal/amino-aldehyde biocomposite films. Carbohydrate Polymers, 194. pp. 51-60. ISSN 0144-8617

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Abstract

From the suspensions of cellulose nanocrystals (CNCs) derived from cotton and flax by acidic hydrolysis, transparent and smooth films were produced with different plasticizers and an amino-aldehyde based cross-linking agent in a wide composition range by a simultaneous casting and wet cross-linking process. The effect of cross-linker concentration on the optical and tensile properties and on the morphology of CNC films was investigated by various measurements. The interaction of films with liquid water and water vapour was also characterized by water sorption and water contact angle as well as performing a sinking test. Cross-linking improved the transparency, reduced the porosity and surface free energy, and prevented the delamination of CNC films in water at a concentration of 10% or higher. The surface of CNC films is basic in character and has an electron donor property. The CNC/amino-aldehyde films had a high tensile strength (45 MPa) and modulus (11 GPa).

Item Type: Article
Subjects: Q Science / természettudomány > Q1 Science (General) / természettudomány általában
Q Science / természettudomány > QD Chemistry / kémia
T Technology / alkalmazott, műszaki tudományok > T2 Technology (General) / műszaki tudományok általában
Depositing User: Dr. János/J Móczó
Date Deposited: 12 Sep 2018 10:00
Last Modified: 12 Sep 2018 10:00
URI: http://real.mtak.hu/id/eprint/83621

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