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PVAL fibres

The interphase in PE fibre/epoxy resin matrix composites was studied by FTIR microspectroscopy using a set-up for investigation of the matrix as close to the fibre as a few microns or less. It was shown that moisture present on the fibre surface could influence the polymerisation reaction of the epoxy/anhydride matrix in an irreversible manner. This effect was enhanced for composites from the more hydrophilic PVAl fibre. The fibre/matrix interaction in these thermoplastic fibre composites was also studied by DSC through characterisation of the fibre melting. A decreased DSC interaction parameter was found if the composition of the interphase was changed by moisture. For a composite with an epoxy/amine matrix, on the other hand, the DSC interaction parameter was unaffected by moisture from the fibre surface. 22 refs. (Pt.I, ibid, p.83-100)... [Pg.101]

Figure 4.4 Effect of sodium chloride (NaCl) in the polyvinyl alcohol (PVAL) solution on fibre morphology (voltage = 5kV, tip-target distance = 10 cm flow rate = 0.2 ml/h). Concentration of NaCl solution in water (a) 0.05 vol% (b) 0.10 vol% (c) 0.15 vol% and (d) 0.20 vol%... Figure 4.4 Effect of sodium chloride (NaCl) in the polyvinyl alcohol (PVAL) solution on fibre morphology (voltage = 5kV, tip-target distance = 10 cm flow rate = 0.2 ml/h). Concentration of NaCl solution in water (a) 0.05 vol% (b) 0.10 vol% (c) 0.15 vol% and (d) 0.20 vol%...
Figure 4.13 Effect of tip-target distance on the electrospun fibre of fully hydrolysed PVAL. (a) 8 cm (b) 10 cm (c) 12 cm and (d) 15 cm... Figure 4.13 Effect of tip-target distance on the electrospun fibre of fully hydrolysed PVAL. (a) 8 cm (b) 10 cm (c) 12 cm and (d) 15 cm...
See other pages where PVAL fibres is mentioned: [Pg.25]    [Pg.103]    [Pg.160]    [Pg.25]    [Pg.103]    [Pg.160]    [Pg.95]    [Pg.49]   
See also in sourсe #XX -- [ Pg.145 ]



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