The Effect of Solvent and Fiber Treatment on the Deposition of Organic Silane Solutions Using THF and Acetone.
To facilitate the deposition of gamma-ureidopropyltrimethoxysilane monomer onto E-glass fibers, anhydrous acetone and THF were used as carrier solvents. Untreated industrial E-glass fibers and cold water plasma treated E-glass fibers were used. Cold water plasma treatment of the fibers increased the hydrophobicity of the surface by increasing the number of hydroxyl groups at the surface; additionally, the amount of aluminium and calcium at the surface was increased. The silane was found to deposit in bilayers with an external surface due to condensed siloxane; aluminium and calcium were also condensed into the network when acetone was used as a deposition solvent. The bilayers were strongly hydrogen bonded via the ureido functional groups. When THF was used as a carrier solvent, a ureido functional surface was obtained due to the THF interfering with the condensation of the silane. The silane was deposited in conical patches of varying heights. Copyright 2001 Academic Press.
Watson
Hazel
H
Department of Physical Chemistry, Åbo Akademi University, 3-5 Porthansgatan, Åbo, FIN 20500, Finland
Kaunisto
Marika
M
Gustafsson
Johanna
J
Päivärinta
Juha
J