By Arthur D. Broadbent

ISBN-10: 0901956767

ISBN-13: 9780901956767

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8). Cellulose is a polyalcohol. It is insoluble in water because water molecules are unable to penetrate into the crystalline regions and break the hydrogen bonds between the hydroxyl groups of the ordered cellulose molecular chains. 8). The weakest intermolecular forces are those that exist between all types of molecules, even those without particular ionic or dipolar sites. These forces involve the attraction of the electrons of an atom in a given molecule for the partially exposed nucleus of an atom in a neighbouring molecule.

The newer weaving technologies use small projectiles, rapiers, or water or air jets to insert the filling between the warp yarns rather than the older, classical shuttles. They generate much less noise and vibration and increase production speeds. A woven fabric exhibits maximum resistance to extension in the warp and weft directions. The selvages, running along the edges of the fabric, usually have a more robust and compact woven structure. They stabilise the shape, prevent unravelling and form an area where the fabric can be gripped during manufacturing operations.

The extent of chain orientation along the filament axis influences the degree of crystallinity. Orientation increases on extending the filaments under tension. The process is called drawing. It causes the molecular chains to slide by one another as the plastic filament extends and increases in length. This promotes chain orientation and therefore crystallisation. Drawing is an important operation for improving the mechanical properties of artificially made filaments. All fibres exhibit their own characteristic morphology.

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Basic Principles of Textile Coloration by Arthur D. Broadbent

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