Modified fluorine-containing copolymer and fluorine resin molded article
A modified fluorine-containing copolymer obtained by irradiating a copolymer with radiation at a temperature of not higher than the melting point of the copolymer. The copolymer includes at least one copolymer selected from a copolymer including a tetrafluoroethylene unit and a perfluoro(alkyl vinyl ether) unit and a copolymer including a tetrafluoroethylene unit and a hexafluoropropylene unit, and has 10 to 10000 functional groups in total per 10 6 carbon atoms.
1. A modified fluorine-containing copolymer obtained by irradiating a copolymer with radiation at a temperature of not higher than the melting point of the copolymer,
the copolymer including at least one copolymer selected from the group consisting of a copolymer including a tetrafluoroethylene unit and a perfluoro(alkyl vinyl ether) unit and a copolymer including a tetrafluoroethylene unit and a hexafluoropropylene unit, and having 10 to 10000 functional groups in total per 10 6 carbon atoms wherein the functional groups are present at an end of the main chain of the copolymer.
2. The modified fluorine-containing copolymer according to claim 1 ,
wherein the functional groups include at least one selected from the group consisting of —CF═CF 2 , —CF 2 H, —COF, —COOH, —COOCH 3 , —CONH 2 , and —CH 2 OH.
3. The modified fluorine-containing copolymer according to claim 1 ,
wherein the functional groups include at least one selected from the group consisting of —CH 2 CF 2 H, —CH 2 COF, —CH 2 COOH, —CH 2 COOCH 3 , —CH 2 CONH 2 , and —CH 2 OH.
4. A fluororesin molded article comprising the modified fluorine-containing copolymer according to claim 1 .
5. The fluororesin molded article according to claim 4 , further comprising polytetrafluoroethylene.
6. A fluororesin molded article obtained by a method of producing a molded article including the steps of molding a copolymer and irradiating the molded copolymer with radiation,
the copolymer including at least one copolymer selected from the group consisting of a copolymer including a tetrafluoroethylene unit and a perfluoro(alkyl vinyl ether) unit and a copolymer including a tetrafluoroethylene unit and a hexafluoropropylene unit, and having 10 to 10000 functional groups in total per 10 6 carbon atoms wherein the functional groups are present at an end of the main chain of the copolymer.
7. The fluororesin molded article according to claim 6 ,
wherein the functional groups include at least one selected from the group consisting of —CF═CF 2 , —CF 2 H, —COF, —COOH, —COOCH 3 , —CONH 2 , and —CH 2 OH.
8. The fluororesin molded article according to claim 6 ,
wherein the functional groups include at least one selected from the group consisting of —CH 2 CF 2 H, —CH 2 COF, —CH 2 COOH, —CH 2 COOCH 3 , —CH 2 CONH 2 , and —CH 2 OH.
9. The fluororesin molded article according to claim 6 ,
wherein the functional groups include at least one selected from the group consisting of —CH 2 —, —CH 3 , —CH 2 CH 3 , —CN, —OCH 3 , and —SO 3 H.
10. The fluororesin molded article according to claim 6 , further comprising polytetrafluoroethylene.