Nonisothermal crystallization and melting behavior of poly(beta-hydroxybutyrate)-poly(vinyl-acetate) blends
Data(s) |
1999
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Resumo |
Nonisothermal crystallization and melting behavior of poly(P-hydroxybutyrate) (PHB)-poly(vinyl acetate) (PVAc) blends from the melt were investigated by differential scanning calorimetry using various cooling rates. The results show that crystallization of PHB from the melt in the PHB-PVAc blends depends greatly upon cooling rates and blend compositions. For a given composition, the crystallization process begins at higher temperatures when slower scanning rates are used. At a given cooling rate, the presence of PVAc reduces the overall PHB crystallization rate. The Avrami analysis modified by Jeziorny and a new method were used to describe the nonisothermal crystallization process of PHB-PVAc blends very well. The double-melting phenomenon is found to be caused by crystallization during heating in DSC. (C) 1999 John Wiley & Sons, Inc. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
An YX;Li LX;Dong LS;Mo ZS;Feng ZL.Nonisothermal crystallization and melting behavior of poly(beta-hydroxybutyrate)-poly(vinyl-acetate) blends,JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,1999,37(5):443-450 |
Palavras-Chave | #THERMAL-BEHAVIOR #KINETICS |
Tipo |
期刊论文 |