Crystallinity measurements of polyamides adsorbed as thin films

Elzein, Tamara; Brogly, Maurice; Schultz, J.

doi:10.1016/s0032-3861(02)00239-2

Cited by 63 publications

(59 citation statements)

References 37 publications

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“…These peaks can probably be related to the stretch vibration of the Si-O-Si group of the clay, since the contributions of PA6 in this particular area are very small. In addition, it was noticed a slight increase in the intensity of these peaks, which can be related to the increase in clay content, used in the preparation of hybrid membranes [38][39][40][41][42] . Also in Figure 2, it was observed typical characteristic bands of formic acid: a broadband at 3300 cm -1 , related to the axial deformation of the O-H group; at 2940 and 2860 cm -1 there are bands related to axial strain of C-H group, which is superimposed with the band of O-H group; and at 1640 cm -1 , there is the axial deformation of the C=O group; the region of 1420 cm -1 is in agreement with the angular deformation of the C-O-H group; at 1256 cm -1 there is a band related to the axial strain of the C-O group and also involves interactions with C-O-H group.…”

Section: Water Permeability and Oil Retentionmentioning

confidence: 98%

Hybrid Membranes of Polyamide Applied in Treatment of Waste Water

et al. 2017

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In this work, it was prepared hybrid membranes of polyamide6 (PA6) with montmorillonite (MMT) and porogenic agent (CaCl 2 ). The hybrid membranes with CaCl 2 were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), porosimetry by mercury intrusion (PMI), flux measurements and rejection. By means of X-ray diffraction, it was revealed that the hybrid membranes with CaCl 2 have an exfoliated and/or partially exfoliated structure. For FTIR and DSC of hybrid membranes with CaCl 2 , it was found that the spectra and the crystalline melting temperature remained virtually unchanged compared to PA6 membrane. From the SEM images, it was observed that the addition of the MMT and the CaCl 2 in the membrane of PA6 caused an increase in the amount of pores the surface and cross section of these membranes. By PMI, it was observed that the presence of MMT and CaCl 2 in the membrane caused an increase in the average diameters of pores. The water-oil separation tests, indicated a significant reduction of oil in the permeate, allowing treatment of wastewater contaminated with oil.

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Section: Water Permeability and Oil Retentionmentioning

confidence: 98%

Hybrid Membranes of Polyamide Applied in Treatment of Waste Water

et al. 2017

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“…In the past, most Raman studies have concerned only the middle wavenumber range, the bending domain and stretching modes [18][19][20][21][22][23]. Information obtained from these modes is very local.…”

Section: Choice Of the Raman Probesmentioning

confidence: 99%

“…These low wavenumber collective modes may be preferred for the study of the relationship between the chain structure and the macroscopic mechanical behaviour. On the other hand, the assignments of bending and stretching modes are well documented, especially their relationship with conformational changes [18][19][20][21][22][23][24][25][26][27][28][29][30][31]. Note, local modes such as N-H stretching mode can also a good source of information about the modification of neighbouring chains arrangements [9][10][11]16,17].…”

Section: Choice Of the Raman Probesmentioning

confidence: 99%

Micro-Raman study of the fatigue and fracture behaviour of single PA66 fibres: Comparison with single PET and PP fibres

Colomban

Ramirez

Paquin

et al. 2006

Engineering Fracture Mechanics

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“…It may be possible to develop techniques to determine the localization of active compounds by fluorescence emission in confocal microscopy 76,77 or by infrared mapping. [78][79][80][81][82] • Properties. The most important property of CRP is the release kinetics.…”

Section: S Y S T E M R E L a T I O N S H I P Smentioning

confidence: 99%

Advancing controlled release packaging through smart blending

et al. 2005

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Researchers from Rutgers University and Clemson University have collaborated to develop a concept of using smart blending to generate functional packaging films for the controlled release of active compounds such as antimicrobials, antioxidants and flavour compounds to extend the shelf-life of food. In this paper, literature results are reviewed to justify the significance of controlled release packaging (CRP) and the research gaps for further development are identified. A major research gap is the lack of packaging materials that can provide the release of active compounds at rates suitable for a wide range of food packaging applications. Smart blending is a promising technology for bridging this research gap. To fully realize the potentials of smart blending, a systematic approach for developing CRP using smart blending is also presented.

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Crystallinity measurements of polyamides adsorbed as thin films

Cited by 63 publications

References 37 publications

Hybrid Membranes of Polyamide Applied in Treatment of Waste Water

Hybrid Membranes of Polyamide Applied in Treatment of Waste Water

Micro-Raman study of the fatigue and fracture behaviour of single PA66 fibres: Comparison with single PET and PP fibres

Advancing controlled release packaging through smart blending

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