Water molecules sorbed in pure poly(vinyl alcohol) and poly(vinyl pyrrolidone), as well as in their blends is found to be only partially crystallizable. The fraction of non-crystalizable water is shown to vary with the blend composition. Such variation is explained by the newly proposed Tg-regulation effect when the swollen blend materials is cooled down. A part of the sorbed water cannot crystallize due to the fact that during cooling the amorphous polmer-water phase is frozen before the water crystallization temperature is reached.
机构:
Drexel Univ, Dept Chem Engn, Philadelphia, PA 19104 USA
Drexel Univ, Biomat & Drug Delivery Lab, Philadelphia, PA 19104 USADrexel Univ, Dept Chem Engn, Philadelphia, PA 19104 USA
Liu, X.
Fussell, G.
论文数: 0引用数: 0
h-index: 0
机构:
Drexel Univ, Dept Chem Engn, Philadelphia, PA 19104 USA
Drexel Univ, Biomat & Drug Delivery Lab, Philadelphia, PA 19104 USA
Synthes Spine, W Chester, PA 19380 USADrexel Univ, Dept Chem Engn, Philadelphia, PA 19104 USA
Fussell, G.
Marcolongo, M.
论文数: 0引用数: 0
h-index: 0
机构:
Drexel Univ, Dept Mat Engn, Philadelphia, PA 19104 USADrexel Univ, Dept Chem Engn, Philadelphia, PA 19104 USA
Marcolongo, M.
Lowman, A. M.
论文数: 0引用数: 0
h-index: 0
机构:
Drexel Univ, Dept Chem Engn, Philadelphia, PA 19104 USA
Drexel Univ, Biomat & Drug Delivery Lab, Philadelphia, PA 19104 USADrexel Univ, Dept Chem Engn, Philadelphia, PA 19104 USA