Various aspects of the structural habits and associated thermodynamic properties of polyamide6 are critically examined with regard to controversies that appeared in literature mainly due to misconceptions or erroneous/ambiguous interpretations of experimental findings. The structural habits under concern are the crystallization capabilities and chain topology, hydrogen bonds and sheet‐like structure, crystalline polymorphism together with thermodynamic stability. Thermo‐mechanical properties are also discussed for the sake of complementary argumentation. Comparisons are made with polycaprolactone, that is, the polyester homolog of polyamide6 regarding chain structure, in order to evaluate the actual role of the H‐bonds on the structural habits. Additional comparisons with polyethylene and polypropylene are also made at several occasions for the sake of supporting argumentation on the structural behavior of polyamide6. A temperature–time–transformation diagram of polyamide6 is finally proposed from the gathering of plentiful literature data.

中文翻译：

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聚酰胺6结构习惯的概述和批判性调查：误解和争议

对于聚酰胺6的结构习惯和相关的热力学性质的各个方面，主要是由于对实验结果的误解或错误/模棱两可的解释，因此对其进行了严格的审查。所关注的结构习惯是结晶能力和链拓扑，氢键和片状结构，晶体多态性以及热力学稳定性。为了补充论证，还讨论了热机械性能。与聚己内酯（即聚酰胺6的聚酯同系物在链结构上的同系物）进行比较，以评估氢键在结构习惯上的实际作用。为了支持对聚酰胺6的结构性能的论证，还多次与聚乙烯和聚丙烯进行了比较。通过收集大量文献数据，最终提出了聚酰胺6的温度-时间-转变图。