Surface modification of cellulose

Surface Modifications of Cellulose and Polyvinyl Alcohol, and Determination of the Surface Density of the Hydroxyl Group... 

Surface Modification of Cellulose and PVA Films. Cellulose, as well as PVA,is known to be a typical non-ionic, hydrophilic polymer possessing hydroxyl groups. As this group has a high reactivity,chemical modification of these polymers is relatively easy and, in fact, has been the subject of extensive research. However, so far as we know, no work has been reported concerned with reactions occurring only at the surface of films or fibers from these polymers. 

Feijani, E. et al.. Bulk and surface modification of cellulose diacetate based RO/NF membranes by polymethyUiydrosiloxane Preparation and cbaracterization. Desalination, 146, 325, 2002. 

One of the most promising approaches regarding the surface modification of cellulose fibres toward the preparation of a sorbent based on cellulose substrate for the uptake of organic pollutant, calls upon CDI as an activation agent. CDI was first used in 1960 by Paul and Anderson [33] as a peptide coupling by... 

S. Alila, A.M. Ferraria, A.M. Botelho do Rego, and S. Boufi, "Controlled surface modification of cellulose fibers by amino derivatives using N,N -carbonyldiimidazole as activator", carbohydrate polymers, Vol. 77, issu 3, pp. 553-562, 2010. 

Native cellulose are commonly modified by physical, chemical, enzymic, or genetic means in order to obtain specific functional properties, and to improve some of the inherent properties that limit their utility in certain application. Physical/surface modification of cellulose are performed in order to clean the fiber surface, chemically modify the surface, stop the moisture absorption process, and increase the surface roughness. " Among the various pretreatment techniques, silylation, mercerization, peroxide, benzoylation, graft copolymerization, and bacterial cellulose treatment are the best methods for surface modification of natural fibers. 

Dankovich, A.T., Hsieh, Y, 2007. Surface modification of cellulose with plant triglycerides for hydrophobicity. Cellulose 14, 469—480. 

Eyley S, Thielemans W (2014) Surface modification of cellulose nanocrystals. Nanoscale... 

Surface Modification of Cellulose Fibres, M.N. Belgacem A. Gandini... 

The purpose of this chapter is to deal with the surface modification of cellulose fibres in order to provide them with specific functionalities, so that they can play determining roles in such applications as reinforcing elements for composite materials, self-contained composite structures, anti-pollution aids, hybrid materials, superhydrophobic surfaces and conductive and magnetic materials. Other types of surface modifications, such as those associated with dying or the manufacture of chromosorb, enzymatic and ion-exchange supports, fall outside the scope of this review. Within the structure of this book, this chapter constitutes in many ways a bridge between the chemistry associated with bulk modification treated in Chapter 16 and the processing and properties of composite materials in Chapter 19, with the addition of more specific aspects. 

The surface modification of cellulose fibres, in view of their incorporation into macromolecular matrices in order to produce composite materials, has been extensively reviewed by us in recent years [18,19]. The corresponding materials have also been the subject of recent monographs [1, 5, 20-23] and are thoroughly updated in Chapter 19. 

Nystrom et al. [43] recently reported the surface modification of cellulose fibres with a long perfiuoroalkyl chain, which was appended either directly or through an intermediate layer of OH-bearing polymers. Again, a highly hydrophobic character was obtained, but the authors failed to recognize the hydrolytic sensitivity of the grafted perfluoroester moieties. 

Zadorecki P, Flodin P (1986) Surface modification of cellulose fibers III. Diuability of cellulose-polyester composites under environmental aging. J Appl Polym Sci 31 1699-1707... 

Belgacem MN, Gandini A (2005) The surface modification of cellulose fibers for use as reinforcing elements in composite materials. Compos Interf 12 41-75... 

Espino-PCTez, E., Bras, J., Ducruet, V., Guinault, A., Duffesne, A., Domenek, S. Influence of chemical surface modification of cellulose nanowhiskers on thermal, meehanical, and barrier properties of poly(lactide) based bionanoeomposites. Eur. Polymer J. 49, 3144-3154 (2013)... 

Belgacem, M. N. and Gandini, A. (2008). Surface modification of cellulose fibres. In Monomers, polymers and composites fiom renewable resources. M. N. Belgacem and A. Gandini (Eds.), Elsevier, Amsterdam. 

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