| 摘要 |
The invention provides an injection-molded product of polyglycolic acid obtainable by molding a thermoplastic resin material at an injection temperature ranging from the melting point, Tm of the polymer to 255° C., wherein the thermoplastic resin material comprises polyglycolic acid having a repeating unit represented by the following formula (1):and the following physical properties:(a) the melt viscosity, eta* [as measured at a temperature of (the melting point, Tm of the polymer+20° C.) and a shear rate of 1,000/sec] being 30-10,000 Pa.s;(b) the melting point, Tm being at least 150° C.;(c) the melt enthalpy, DELTAHm being at least 20 J/g; and(d) the density being at least 1.50 g/cm3 as measured in an unoriented, crystallized form, and a production process thereof.
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