Fiber material and method for manufacturing the same
a fiber material and fiber technology, applied in the field of fiber materials, can solve the problems of low peeling resistance between nanofibers and core fibers, affecting the specific surface area of fiber materials, and affecting the performance of fiber materials,
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example 1
[0090]This example relates a fiber material in which polymer fibers are formed from polycapro lactone (PCL) and polymer nanofibers are formed from polyethylene oxide (PEO). The fiber material is manufactured as follows.
[0091]First, 1 mL of a PCL diluted solution A adjusted to 8 wt % using polycapro lactone (PCL, Weight average molecular weight of 80000, manufactured by Aldrich) and a solution obtained by mixing THF (tetrahydrofuran) and DMF (dimethyl formamide) at 6:4 (Volume ratio) is used. 2 mL of a PEO diluted solution B in which polyethylene oxide (manufactured by Aldrich) is adjusted to 6 wt % using pure water is used.
[0092]Next, these diluted solutions are simultaneously ejected for performing bicomponent spinning by an electrospinning method, whereby nanofiber coated polymer fibers in which the PCL polymer fibers as core fibers are physically coated with the PEO polymer nanofibers is obtained.
[0093]More specifically, a head (Clip spinneret, FIG. 2) capable of performing spinn...
example 2
[0097]This example is a modification of Example 1 and is manufactured in the same manner as in Example 1, except changing the materials of the polymer fibers and the polymer nanofibers and changing the following conditions.
[0098]As the material of the polymer fibers, 1 mL of a PS / PET diluted solution C in which a mixture (Volume ratio of 9:1) of polystyrene (PS, Weight average molecular weight of 280000, manufactured by Aldrich) and polyethylene terephthalate (PET, Weight average molecular weight of 10000, manufactured by Aldrich) is adjusted to a 30 wt % solution using DMF is used. As the material of the polymer nanofibers, 2 mL of a PET diluted solution D in which PET is adjusted to 13 wt % using a solution in which dichloromethane (DCM) and trifluoroacetic acid (TA) are mixed with 1:1 (volume ratio) is used.
[0099]The application of a voltage to the spinning orifices is performed at 22 kV. The fusion-bonding process is performed by heat-treatment in an oven at 260° C. for 0.5 minu...
example 3
[0101]This example is a modification of Example 1 and is manufactured in the same manner as in Example 1, except changing the materials of the polymer fibers and the polymer nanofibers and changing the following conditions.
[0102]As the material of the polymer fibers, 1 mL of a PVDF-HFP diluted solution E in which polyvinylidene fluoride-hexafluoro propylene (PVDF-HFP) (KYNAR 2750, manufactured by KYNAR) is adjusted to a 10 wt % solution using dimethyl acetamide (DMAc) is used.
[0103]As the material of the polymer nanofibers, a mixture of polyvinylidene fluoride (PVDF, KYNAR 460, manufactured by KYNAR) and montmorillonite (MN, nanoclay, manufactured by Aldrich) is used. This mixture is manufactured by the following procedure.
[0104]10 mg of montmorillonite (MN) as a filler and 1 mL of organic solvent (DMAc) are put in a container. Zirconia balls having a particle diameter of 2 mm are added to ⅓ of the capacity of the container, and then the mixture is dispersed under the conditions of ...
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