Article ID Journal Published Year Pages File Type
1526087 Materials Chemistry and Physics 2009 6 Pages PDF
Abstract
In this experiment, pure PBSU fibers, PBSU/12.5% β-CaSiO3, and PBSU/25% β-CaSiO3 composite fibers were fabricated by electrospinning. In order to investigate the effects of surface modification of β-CaSiO3 on composite fibers, β-CaSiO3 nanowires were surface esterified using dodecyl alcohol. SEM micrographs showed that composite materials with modified β-CaSiO3 have homogeneous fibrous structures similar as that of pure PBSU fibers, while the fibers containing unmodified β-CaSiO3 were inhomogeneous and much larger in diameter, and also junctions where β-CaSiO3 agglomerated could be found. Mechanical testing showed that with the addition of unmodified β-CaSiO3 into PBSU matrix, the tensile strength of fibrous materials decreased obviously, and the decrease degree increased with increased β-CaSiO3 content. However, the tensile stresses of composite materials after surface modification of β-CaSiO3 turned back and increased about 40% compared to those containing unmodified β-CaSiO3. All of these results suggested surface modification of β-CaSiO3 was an effective approach to obtain composite fibrous materials with better morphologies and enhanced mechanical properties, and this method is supposed to be feasible in other fibrous material systems.
Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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