Polymer resin composition for preparing hollow fiber membrane, preparation method of hollow fiber membrane, and hollow fiber membrane
AssigneeLotte Chemical Corporation
InventorsJin Won LEE, Bum Jin PARK
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Abstract
The present invention relates to a polymer resin composition for preparing a hollow fiber membrane, including: a vinylidene fluoride-based polymer resin; a good solvent; a poor solvent; and one or more compounds selected from the group consisting of a bicycloalkane having 5 to 15 carbons mono- or poly-substituted with a carboxylic acid metal salt functional group and a peroxide, a preparation method of a hollow fiber membrane using the polymer
Claims17
A polymer resin composition for preparing a hollow fiber membrane, comprising:
- 10 to 70% by weight of a vinylidene fluoride-based polymer resin;
- 1 to 70% by weight of a good solvent;
- 1 to 75% by weight of a poor solvent;
- and
- 0.001 to 5% by weight of one or more compounds selected from the group consisting of a bicycloalkane having 5 to 15 carbons mono- or poly-substituted with a carboxylic acid metal salt functional group and a peroxide.
A preparation method of a hollow fiber membrane, comprising:
- heating the polymer resin composition for preparing the hollow fiber membrane of claims 1 to 50 to 175° C.;
- mixing the heated polymer resin composition for preparing the hollow fiber membrane with an internal coagulant;
- and
- spinning the polymer resin composition for preparing the hollow fiber membrane mixed with the internal coagulant in a wet coagulation bath.
A hollow fiber membrane, comprising a polymer base containing a vinylidene fluoride-based polymer resin and a bicycloalkane having 5 to 15 carbons mono- or poly-substituted with a carboxylic acid metal salt functional group, or a polymer base containing a crosslinked product between decomposed divided bodies of a vinylidene fluoride-based polymer resin by a peroxide,
- wherein it has an outer diameter of 0.5 to 5 mm and an inner diameter of 0.1 to 4.5 mm.
Dependencies are inferred from the claim text.