Miscibility in blends of aliphatic polyamides and an aromatic polyamide, nylon 3Me6T
Miscibility in blends of aliphatic polyamides and an aromatic polyamide, nylon 3Me6T
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脂肪族聚酰胺和芳香族聚酰胺（尼龙 3Me6T）的共混物
DOI：
10.1016/0032-3861(88)90175-9
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发表时间：
1988
期刊：
影响因子：
4.6
通讯作者：
T. Ellis
中科院分区：
文献类型：
--
作者：
T. Ellis
对含有无定形芳香族聚酰胺尼龙 3Me6T 的尼龙 6 共混物的量热和形态研究表明，它们在整个成分范围内是可混溶的。无定形共混物说明了熟悉的 Tgupon 组成的单调和凹依赖性，这与现有理论很好地相关。人们发现，尼龙 6 组分在退火时会发生结晶，同时在成分范围中间的共混物中还会伴随着玻璃化转变温度异常变宽。这种现象归因于所得混合无定形相中无定形聚酰胺的形态上强加的非均匀分布。光学透射显微镜揭示了结晶共混物内的连续球晶结构，这证实了不存在任何关键的溶液行为。对尼龙 3Me6T 分别在尼龙 4、46、66、69、610、612、11 和 12 中的溶液行为的初步研究表明，混溶性与后者酰胺官能团的相对丰度之间存在相关性。建议观察到的行为适合基于平均场二元相互作用模型的解释。
Calorimetric and morphological investigations of blends of nylon 6 containing an amorphous aromatic polyamide, nylon 3Me6T, have shown them to be miscible across the entire range of composition. Amorphous blends illustrate the familiar monotonic and concave dependence ofTgupon composition which correlates well with existing theory. Crystallization of the nylon 6 component has been found to occur upon annealing, which is also accompanied by an unusual broadening of the glass transition in blends in the middle of the composition range. This phenomenon has been ascribed to a morphologically imposed heterogeneous distribution of the amorphous polyamide in the resultant mixed amorphous phase. Optical transmission microscopy has revealed a continuous spherulitic texture within the crystallized blends which confirms the absence of any critical solution behaviour. Preliminary investigations of the solution behaviour of nylon 3Me6T in nylons 4, 46, 66, 69, 610, 612, 11 and 12, respectively, indicate a correlation between miscibility and the relative abundance of amide functionalities of the latter. It is proposed that the behaviour observed is amenable to interpretations based upon a mean-field binary interaction model.