Polymer nanofiber accumulated body and method of producing the same
AssigneeCanon Kabushiki Kaisha
InventorsTetsuo Hino, Kaori Yasufuku, Kenji Takashima, Kazuhiro Yamauchi
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Abstract
Provided is a nanofiber accumulated body having a high mechanical strength and excellent in durability, the polymer nanofiber accumulated body including polymer nanofibers each containing a polymer material, the polymer nanofibers being accumulated and three-dimensionally entangled with each other to form the accumulated body, in which: the polymer nanofibers each have a fiber diameter of 3 μm or less; and the polymer nanofibers each contain 5 wt % to 30 wt % of a low-molecular weight organic compound having at least one α,β-unsaturated ester structure, with respect to a total weight of the polymer nanofibers.
Claims9
A polymer nanofiber accumulated body, comprising polymer nanofibers each containing a polymer material, the polymer nanofibers being accumulated and three-dimensionally entangled so as to be in contact with each other to form the accumulated body, wherein:
- the polymer nanofibers each have a fiber diameter of 3 μm or less;
- the polymer nanofibers each contain 5 wt % to 30 wt % of a low-molecular weight organic compound having at least one α,β-unsaturated ester structure, with respect to a total weight of the polymer nanofibers, and each of the polymer nanofibers has the low-molecular weight organic compound on a surface thereof;
- the low-molecular weight organic compound has a molecular weight of 100 to 1,000;
- the low-molecular weight organic compound is an alkyl ester of (meth)acrylic acid, the alkyl ester including an alkyl group having 4 to 20 carbon atoms;
- and
- the polymer nanofibers are crosslinked with each other at a position where the polymer nanofibers are in contact with each other.
A method of producing a polymer nanofiber accumulated body, comprising:
- forming a polymer nanofiber film by spinning polymer nanofibers so that the polymer nanofibers are in contact with each other, each of the polymer nanofibers containing a polymer material and a low-molecular weight organic compound having at least one α,β-unsaturated ester structure, the low-molecular organic compound being on a surface of respective said polymer nanofibers;
- and
- heating the polymer nanofiber film and crosslinking the respective said polymer nanofibers at a position where the polymer nanofibers are in contact with each other by forming an ionic bond between the low-molecular organic compound that is on the respective said polymer nanofibers,
- wherein the low-molecular weight organic compound has a molecular weight of 100 to 1,000, and
- wherein the low-molecular weight organic compound is an alkyl ester of (meth)acrylic acid, the alkyl ester including an alkyl group having 4 to 20 carbon atoms.
Dependencies are inferred from the claim text.