| abstract |
A resin composition containing a polyvinyl alcohol resin, wherein there are two different components when methylene carbon at 44 to 46 ppm is separated into components according to a <sup>13</sup>C spin-lattice relaxation time T<sub>1C</sub> , one of the two different components having a relaxation time T<sub>1C</sub> of not greater than 50 seconds as observed when the resin composition is analyzed through solid-state NMR measurement by placing a 4-mm φ zirconia rotor filled with the resin composition in a 9.4-T static magnetic field at a <sup>1</sup>H resonance frequency of 400 MHz and a <sup>13</sup>C resonance frequency of 100 MHz, and rotating the zirconia rotor at 5,000 Hz at 23°C under magic angle spinning conditions. The resin composition is excellent in gas barrier property, particularly in oxygen barrier property, in a high humidity environment. |