ON THE CRYSTALLINITY AND SOME STRUCTURE PROPERTY RELATIONSHIPS OF POLY(ETHYLENE-TEREPHTHALATE) - POLY(AMIDE-6,6) BLENDS
ON THE CRYSTALLINITY AND SOME STRUCTURE PROPERTY RELATIONSHIPS OF POLY(ETHYLENE-TEREPHTHALATE) - POLY(AMIDE-6,6) BLENDS
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DOI：
10.1002/pen.760271310
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发表时间：
1987-07-01
影响因子：
3.2
通讯作者：
PILLON, DW
中科院分区：
文献类型：
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作者：
PILLON, LZ;LARA, J;PILLON, DW
在对甲苯磺酸(TsOH)存在下，聚对苯二甲酸乙二酯/聚(酰胺-6，6)(PET/PA)体系发生酯-酰胺交换反应后，对样品进行注射成型和拉伸测试。观察到这些无取向试件的脆性断裂。采用差示扫描量热法(DSC)对样品的结晶度和中间相的影响进行了研究。差示扫描量热仪(DSC)结果表明，共混物的结晶度增加是由于PA(首先结晶)和共聚物的成核作用增强所致。已经独立证实，结晶度与现有PET/PA共混物相当的整齐PET样品表现出类似的行为。
Following the ester‐amide interchange reaction in the poly(ethylene terephthalate)/poly(amide‐6, 6) (PET/PA) system in the presence of p‐toluenesulfonic acid (TsOH), samples were injection molded and tested in the tensile mode. A brittle fracture was observed for these unoriented specimens. To separate the influence of the crystallinity from that of the interphases, the samples were studied using differential scanning calorimetry (DSC). The DSC results indicated an increase of crystallinity in the blends caused by enhanced nucleation of PA (which crystallizes first) and that of the copolymer resulting from the esteramide interchange reaction. It has been independently verified that neat PET samples of comparable crystallinity to that existing in the PET/PA blends show a similar behavior.