Influence of a cooling rate on a structure of PA6

Песецкий, С. С.; Jurkowski, B.; Ol’khov, Yu. A.; Bogdanovich, S. P.; Koval, V. N.

doi:10.1016/j.eurpolymj.2004.12.009

Cited by 28 publications

(22 citation statements)

References 22 publications

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“…This difference equalizes after the 2 nd scan in the range of 3-4° % for all samples. This observation confirms the previously established fact that the thermal history of the PA6 sample is of prime importance for the crystallinity index [45,46]. During AAROP, the PAMC samples were synthesized and crystallized at isothermal conditions (~135°C for one hour) and then cooled gradually to room temperature i.e., no melting occurred.…”

Section: Resultssupporting

confidence: 87%

Reactive microencapsulation of carbon allotropes in polyamide shell-core structures and their transformation in hybrid composites with tailored electrical properties

Oliveira¹,

Dencheva²,

Martins³

et al. 2016

Express Polym. Lett.

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Section: Resultssupporting

confidence: 87%

Reactive microencapsulation of carbon allotropes in polyamide shell-core structures and their transformation in hybrid composites with tailored electrical properties

Oliveira¹,

Dencheva²,

Martins³

et al. 2016

Express Polym. Lett.

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“…This can be related to the isothermal crystallization of PAMC during the AAROP carried out for 1 h at 120-130 C that would produce larger and more perfect PA6 crystallites as compared with those obtained during the non-isothermic and much faster crystallization within the DSC equipment during the second scan. This observation confirms the previously established fact that the thermal history of the PA6 sample is of prime importance for its crystallinity index [36,37].…”

Section: Dsc Studiessupporting

confidence: 91%

Binary polyamide hybrid composites containing carbon allotropes and metal particles with radiofrequency shielding effect

et al. 2018

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Novel hybrid composites with polyamide 6 (PA6) matrices and binary metal/carbon allotrope reinforcements are synthesized using a two‐stage method. First, activated anionic ring‐opening polymerization (AAROP) of ε‐caprolactam is performed in suspension, in the presence of the desired amounts of different metal particles (Al, Cu, Fe, or Mg) and carbon allotropes (multi‐walled carbon nanotubes or carbon black). The AAROP produces dual core PA6 microcapsules (PAMCs) with controlled shape and size and a total metal/carbon load of up to 17 wt% in respect to the PA6 matrix. Second, these PAMC are compression molded to composite plates. The morphology and the crystalline structure of the different PAMC and their respective composites are studied by electron microscopy and thermal methods. The well‐dispersed binary metal–carbon allotrope fillers in the PA6 matrix increase its electrical conductivity by seven to nine orders of magnitude. Simultaneously, up to ca. 60% increase of the Young's modulus of the hybrids is registered. An almost total disappearance of the PA6 resonance lines in some of the binary hybrids is registered by solid state NMR spectroscopy. The tunable combination of enhanced electrical conductivity and screening of radiofrequencies can be potentially useful in electromagnetic interference shielding or radar absorbing materials. POLYM. COMPOS., 40:E1338–E1352, 2019. © 2018 Society of Plastics Engineers

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“…Various phases of PA6 were reported in literature [33,38,39] for decades. Li et al [7] described a series of structures of intermediate phase between a-and g-phase such as frequently-mentioned b phase [36] and d phase.…”

Section: Resultsmentioning

confidence: 99%

Direct investigations of deformation and yield induced structure transitions in polyamide 6 below glass transition temperature with WAXS and SAXS

Guo

Wang

Zhou

et al. 2015

Polymer

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Influence of a cooling rate on a structure of PA6

Cited by 28 publications

References 22 publications

Reactive microencapsulation of carbon allotropes in polyamide shell-core structures and their transformation in hybrid composites with tailored electrical properties

Reactive microencapsulation of carbon allotropes in polyamide shell-core structures and their transformation in hybrid composites with tailored electrical properties

Binary polyamide hybrid composites containing carbon allotropes and metal particles with radiofrequency shielding effect

Direct investigations of deformation and yield induced structure transitions in polyamide 6 below glass transition temperature with WAXS and SAXS

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