cm (-OH stretching vibrations), 1632/cm (-NH2
bending
vibration). Other major bands observed at wave
numbers of 2910/cm (-CH stretching vibration), 1377/
cm (symmetric bending vibration of -CH). The
adsorption band at 954 (related to the Si-OH bonds),
1078 and 801/cm (characteristics for Si-O-C absorption)
indicating that there is a definite interaction between
the phases (Al-Sagheer and Muslim, 2010; Zulfikar et
al., 2013).
The surface morphologies of chitosan and CSC at
5000x magnification were shown in Fig. 2. It was
observed that the surface of the chitosan prior to the
cross-linking process was smooth and less porous.
However, after cross-linking, the surface morphology
became coarser and more porous. The silica particles
are in the form of white round beads, and their dispersion
within the matrix is clearly visible.
cm (-OH stretching vibrations), 1632/cm (-NH2
bending
vibration). Other major bands observed at wave
numbers of 2910/cm (-CH stretching vibration), 1377/
cm (symmetric bending vibration of -CH). The
adsorption band at 954 (related to the Si-OH bonds),
1078 and 801/cm (characteristics for Si-O-C absorption)
indicating that there is a definite interaction between
the phases (Al-Sagheer and Muslim, 2010; Zulfikar et
al., 2013).
The surface morphologies of chitosan and CSC at
5000x magnification were shown in Fig. 2. It was
observed that the surface of the chitosan prior to the
cross-linking process was smooth and less porous.
However, after cross-linking, the surface morphology
became coarser and more porous. The silica particles
are in the form of white round beads, and their dispersion
within the matrix is clearly visible.
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