| 摘要 |
PURPOSE:To provide a poly(vinyl alcohol) sheet which has low elongation and high strength, is pliable, and has excellent water resistance. CONSTITUTION:A sheet made of a material comprising 100 pts.wt. PVA having a syndiotacticity of 55% or higher in terms of syndiotactic diad content and a degree of saponification of 90mol% or higher and 8-50 pts.wt. polyhydric alcohol plasticizer. |
