Infrared spectroscopic study of the interactions of nylon‐6 with water

Iwamoto, Reikichi; Murase, Hiroshi

doi:10.1002/polb.10526

Cited by 88 publications

(83 citation statements)

References 9 publications

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“…4a shows the infrared spectra of the bare and plasma coated PA samples. The spectrum of the as-received polyamide indicates the presence of N-H (3400 cm −1 ), C-H (2900 and 1400) and C-N (1600, 1540 and 1260 cm −1 ) groups, normally observed in this material [28]. With the deposition of the films, the bands related to N-H (3400 cm −1 ) and C-N (1600, 1540 cm −1 ) vibrations disappeared in the spectra, suggesting that the film completely coated the polymer surface.…”

Section: Resultsmentioning

confidence: 94%

Wettability and surface microstructure of polyamide 6 coated with SiOXCYHZ films

Vendemiatti

Hosokawa

Rangel

et al. 2015

Surface and Coatings Technology

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Section: Resultsmentioning

confidence: 94%

Wettability and surface microstructure of polyamide 6 coated with SiOXCYHZ films

Vendemiatti

Hosokawa

Rangel

et al. 2015

Surface and Coatings Technology

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“…129,135 The interactions of the amide groups with water are significantly stronger than the hydrogen bond between CO and NH in the crystalline portion according to the magnitude of the frequency shift of relevant bands. 136 The activation energy and enthalpy of water desorption are expected to be high because of these strong hydrogen bonds between the host species and nylon. …”

Section: Mechanism Of Hydrationmentioning

confidence: 99%

Hydrogen bonding, mobility, and structural transitions in aliphatic polyamides

Murthy

2006

J Polym Sci B Polym Phys

222

197

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Some salient results in nylon research are reviewed to identify the fundamental principles that are applicable to other strongly interacting or hydrogenbonded polymers, including proteins. The effects of hydrogen bonds on stress-, heat-, and solvent-induced changes in macroscopic properties are discussed. These data provide a window into the chain mobility and linkages between the crystalline and amorphous domains, both of which are important for any predictive model. The changes in the characteristics of the amorphous phase with the crystallinity and orientation require that it be modeled with at least two components: a rigid/immobile/ anisotropic component and a soft/ mobile/isotropic component. The deformation and shrinkage behavior of these polymers are discussed in terms of the relative contributions of the amorphous and crystalline domains and of the interactions between them. The premelting crystalline transition is accompanied by the merging of intersheet and intrasheet diffraction peaks in some nylons, as observed by Brill, and not in others even though the underlying mechanism that gives rise to these transitions, the onset of volume-increasing librational motion of the crystalline stems, is the same. Because the effects of the temperature, deformation, and solvent have a common origin associated with mobility, a fictive temperature can be associated with a given solvent activity or stress level. The magnitude of this fictive temperature is the amount by which the glass or Brill transition temperature is reduced in the presence of solvents ($50 8C) or stress or by which the annealing temperature can be reduced in the presence of a solvent (or active stress) to achieve the same structural state as that of a dry (or static) polymer.

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“…It is shown that the broad band at 3301.81 cm -1 , usually assigned to the N-H bending vibration in primary amine. The two bands at 2930.31 and 2861.84 cm -1 are assigned to the CH stretching of the ethylene sequence 26 . Moreover, the absorbance at 1645.95 cm -1 related to C=O amide I stretch and the combination absorbance of the N-H and C-N amide II stretch at 1551.45 cm -1 are clearly observed 27 .…”

Section: Infrared Spectroscopy (Ir)mentioning

confidence: 99%

Synthesis of Polyamide-6/Montmorillonite Nanocomposites by Direct In-situ Polymerization Catalysed by Exchanged Clay

Kherroub¹,

Belbachir²,

Lamouri³

et al. 2013

Orient. J. Chem

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The purpose of this study was to obtain polyamide-6 nanocomposites with national organically modified clay (termed 12-montmorillonite). The formation of polyamide-6 was confirmed by infrared spectroscopy (IR), the prepared nanocomposites were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and thermogravimetric analysis (TGA). The evolution of mechanical properties was also studied. The obtained results confirm the intercalation of molecules of salt in the clay layers, and a good interaction with the polymer, showing the formation of intercalated and/or partially exfoliated structures. The nanocomposites showed higher thermal stability compared to pure polymer, and the mechanical properties presented interesting and promising results.

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Infrared spectroscopic study of the interactions of nylon‐6 with water

Cited by 88 publications

References 9 publications

Wettability and surface microstructure of polyamide 6 coated with SiOXCYHZ films

Wettability and surface microstructure of polyamide 6 coated with SiOXCYHZ films

Hydrogen bonding, mobility, and structural transitions in aliphatic polyamides

Synthesis of Polyamide-6/Montmorillonite Nanocomposites by Direct In-situ Polymerization Catalysed by Exchanged Clay

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