A study of PBT/PC blends by modulated DSC and conventional DSC

被引：15

作者：

Jin, YM ^{[1
]}

Bonilla, J ^{[1
]}

Lin, YG ^{[1
]}

Morgan, J ^{[1
]}

McCracken, L ^{[1
]}

Carnahan, J ^{[1
]}

机构：

[1] GE CO,RES & DEV,NISAKAYUNA,NY 12309

来源：

JOURNAL OF THERMAL ANALYSIS | 1996年 / 46卷 / 3-4期

关键词：

conventional DSC; crystallization; glass transition; modulated DSC; PBT/PC blend;

D O I：

10.1007/BF01983620

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Two poly(butylene terephthalate)/polycarbonate (PBT/PC) blends with different formulations were analyzed by modulated DSC (MDSC) and conventional DSC to determine differences in crystallization behavior. A significant difference (30 degrees C in cold crystallization temperature) between the two samples was detectable by MDSC while no significant difference was seen by conventional DSC. That indicates the total heat flow from MDSC is not always equivalent to the heat flow from conventional DSC as we have assumed or seen before. The reason has not been fully understood, but may be related to unusual nucleation and crystallization induced by modulation. Alternative conventional DSC methods were developed and compared to the MDSC results.

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收藏

页码：1047 / 1059

页数：13

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