Methylcellulose, a Cellulose Derivative with Original Physical Properties and Extended Applications

Polymers

Marguerite Rinaudo¹  Miguel D. Noseda²  Maria Eugênia R. Duarte²  Pauline L. Nasatto²  Joana L. M. Silveira²  Frédéric Pignon³ 

[1] Biomaterials Applications, 6, rue Lesdiguières, F-38000 Grenoble, France;Departamento de Bioquímica e Biologia Molecular, Federal University of Paraná, P.O. Box 19046, CEP 81531-980, Curitiba, Paraná, Brazil;Laboratoire Rhéologie Procédés (LRP), University Grenoble Alpes, F-38000 Grenoble, France;

关键词: methylcellulose (MC);    cellulose derivative;    synthesis;    characterization;    rheological properties;    thermogelation;    applications;   

DOI  :  10.3390/polym7050777

来源: DOAJ

【 摘 要 】

This review covers the preparation, characterization, properties, and applications of methylcelluloses (MC). In particular, the influence of different chemical modifications of cellulose (under both heterogeneous and homogeneous conditions) is discussed in relation to the physical properties (solubility, gelation) of the methylcelluloses. The molecular weight (MW) obtained from the viscosity is presented together with the nuclear magnetic resonance (NMR) analysis required for the determination of the degree of methylation.The influence of the molecular weight on the main physical properties of methylcellulose in aqueous solution is analyzed. The interfacial properties are examined together with thermogelation. The surface tension and adsorption at interfaces are described: surface tension in aqueous solution is independent of molecular weight but the adsorption at the solid interface depends on the MW, the higher the MW the thicker the polymeric layer adsorbed. The two-step mechanism of gelation is confirmed and it is shown that the elastic moduli of high temperature gels are not dependent on the molecular weight but only on polymer concentration. Finally, the main applications of MC are listed showing the broad range of applications of these water soluble cellulose derivatives.

【 授权许可】

Unknown