Abstract
AbstractThe crystallization of syndiotactic‐rich poly(vinyl alcohol) (s‐PVA) with a molecular weight of 6.73 × 105 from aqueous solutions was carried out under Couette flow with or without seed crystals. The crystallization of s‐PVA from aqueous solutions occurred below the surface of the solutions even in the presence of seed placed in the solution; whereas, in the case of aqueous s‐PVA solutions containing 0.02% octyl alcohol (antifoaming reagent) only the longitudinal growth of seed occurred. The lengths of the fibers obtained were 2.5 to 3.0 cm.
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