Fibre highly crystalline

Denier, 38-51 mm staple fibres of 1.5 m-aramid and m-aramid fibre. High crystallinity higher... 

It is more difficult to control the enzymatic processing of wool. Hence there is a greater danger of fibre damage compared with cellulosic fibres. Since cellulose is a highly crystalline... 

Unmodified, bottle-grade PET resin begins to soften and become rubbery at 80 °C. This makes the direct use of unmodified PET in engineered applications not feasible. For PET to be used in durable products it must be made highly crystalline and needs to be reinforced with glass fibres or mineral reinforcements. 

Figure 29. Fiuman osteoblast-like MG 63 cells in cultures on material surfaces modified with carbon nanoparticles. A fullerene Cgo layers deposited on carbon fibre-reinforced carbon composites (CFRC), B fullerene C o layers deposited on microscopic glass coverslips, C terpolymer of polytetrafluoroethylene, polyvinyldifluoride and polypropylene, mixed with 4% of single-wall carbon nanohorns, D the same terpolymer with high crystalline electric arc multi-wall nanotubes, E diamond layer with hierarchically organized micro- and nanostmcture deposited on a Si substrate, F nanocrystalline diamond layer on a Si substrate. Standard control cell culture substrates were represented by a PS culture dish (G) and microscopic glass coverslip (FI). Immunofluorescence staining on day 2 (A) or 3 (B-Fl) after seeding, Olympus epifluorescence microscope IX 50, digital camera DP 70, obj. 20x, bar 100 pm (A, C, D, G,H)or 200 pm (B, E, F) [16].

Although structurally Kevlar fibres are highly crystalline or ordered it is interesting to note that appreciable moisture is absorbed at equilibrium. For example in variant T950 the moisture uptake is about 5 % at 22 °C and 55 % relative humidity. As discussed in Sect. 4.1.4.1 it is likely that the water is retained in microvoids distributed close to the surface of the fibres. Certainly in the short term there appears to be little effect of moisture on the tensile properties. 

This forms a highly crystalline polymer possessing excellent fibre-forming... 

Terylene is highly crystalline and markedly hydrophobic. It is not, there-, easily penetrated by dyes with large molecules. It also has no chemic-active groups and cannot combine with dye anions or cations. In ractice, polyester fibres are dyed with disperse dyes, a few azoic combinations, and with those disperse dyes which can be diazotized and coupled in situ. 

The highly crystalline nature of fibroin leads to the characteristic properties of silk fibres a good mechanical strength and limited extensibility, arising from the extensively inter-bonded, fully extended nature of the protein chains, and... 

Figure 6 shows a selection of diffraction patterns obtained during D-+B transitions whilst the relative humidity was being increased. In the initial state the fibre contained a highly crystalline array of molecules in the D-form (Fig. 6 a). Two... 

The content of the mesophase significantly decreases in fibres taken at other parameters. At certain conditions the mesophase completely disappears and inside fibres only two-phase structure, crystalline and amorphous, is formed. The high crystalline content was obtained in fibres extruded at low extrusion temperature and taken at high take-up velocities (Spruiell White, 1975 Bond Spruiell, 2001). 

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