Crystallization and melting behavior of nylon 66 poly(ether imide) blends
Data(s) |
1998
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Resumo |
Isothermal crystallization and melting behavior of nylon 66 and its blends with poly(ether imide) (PEI) were investigated by differential scanning calorimetry. Crystallization kinetics such as overall rate constant Z and index n were calculated according to Avrami approach. Crystallization in the blend was retarded with respect to that of pure nylon 66 by incorporation of PEI with high glass transition temperature (T-g). The lowest growth rate of the spherulites was observed in the blends containing 10 and 15 wt% fraction of PEI. A transition temperature where positively birefringent spherulites disappear and negative birefringent spherulites develop was measured by thermal analysis. The transition temperature increased with content of PEI in the blends. A suitable range of isothermally crystallization temperatures, 238.5-246 degrees C, is suggested For determining the equilibrium melting points by means of Hoffman-Weeks approach. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Lee JH;Lee SG;Choi KY;Liu JJ.Crystallization and melting behavior of nylon 66 poly(ether imide) blends,POLYMER JOURNAL,1998,30(7):531-537 |
Palavras-Chave | #DIBLOCK COPOLYMER #KINETICS #MORPHOLOGY #POLYPROPYLENE |
Tipo |
期刊论文 |