Probing the role of surface treated montmorillonite on the properties of semi-aromatic polyamide/clay nanocomposites

Zulfiqar, Sonia; Kausar, Ayesha; Rizwan, Muhammad; Sarwar, Muhammad Ilyas

doi:10.1016/j.apsusc.2008.06.184

Cited by 43 publications

(24 citation statements)

References 45 publications

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“…The nanocomposite with 2 mass% OC content (PACN 2) showed a maximum in the T g value (2448C) relative to the bare PA (2378C). Increment in the T g value of nanocomposites relative to bare PA is attributed to decrease in volubility of polymer fragments at interfacial regions [1,9,53]. Also, increase in T g value with increase in OC content indicated to greater interaction between the OC and matrix in greater content of OC [2].…”

Section: Preparation Of the Nanocompositesmentioning

confidence: 99%

Polymer/clay nanocomposites based on aliphatic–aromatic polyamide containing thiazole ring and new organomodified nanosilicate layers: Synthesis, characterization, and thermal properties study

et al. 2017

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New polyamide/clay nanocomposites (PACN) were produced using semicrystalline polyamide (PA) containing thiazole ring and new organoclay (OC) through solution intercalation technique. For further study, PA/Cloisite‐15A nanocomposites (PAAN) were also prepared using PA and Cloisite‐15A. X‐ray diffraction (XRD), field emission‐scanning electron microscopy (FE‐SEM), and transmission electron microscopy (TEM) results showed a good dispersion for OC in the PA matrix. A meaningful decrease in intensity of absorption from ultraviolet–visible spectra as well as from fluorescence emissions of resulted PACN were observed. As thermogravimetric analysis (TGA) in nitrogen atmospheres showed, the T5 and T10 increased by about 57% and 36%, respectively for PACN containing 5 mass% of OC, as the char yield enhanced greatly, which was about 16.3% higher than the neat PA. Also the TGA results showed that PACN had higher thermal stability than PAAN. Differential scanning calorimetry (DSC) analysis exhibited higher glass‐transition temperature values (Tg) for PACN as compared to the neat PA. POLYM. COMPOS., 39:E1407–E1420, 2018. © 2017 Society of Plastics Engineers

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Section: Preparation Of the Nanocompositesmentioning

confidence: 99%

Polymer/clay nanocomposites based on aliphatic–aromatic polyamide containing thiazole ring and new organomodified nanosilicate layers: Synthesis, characterization, and thermal properties study

et al. 2017

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“…MMT clays in their natural state present a hydrophilic character and, when added to a polymeric matrix, tend to form agglomerates. This occurs because of the intensity of ionic forces that exist between the clay layers, where the surface energy of the clay is higher than the polymer, generating a higher particle–particle interaction (cohesion) than the particle–polymer interaction (adhesion) . When organically modified clays are used, the intercalation capacity of polymers depends on the size of the surface modifier.…”

Section: Resultsmentioning

confidence: 99%

Development of acrylic‐based powder coatings with incorporation of montmorillonite clays

Catarina

Borsoi

Romanzini

et al. 2017

J of Applied Polymer Sci

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Powder coatings have been receiving attention because they are environmentally friendly. They do not contain solvents in their composition, and their components have decorative and corrosion‐protection functions, among many others. However, the presence of polymers in their composition increases the risk of combustion in adverse situations. In this context, this study aims to develop and characterize acrylic‐based powder paints with the addition of 2 wt % and 4 wt % montmorillonite clays (MMT) as Cloisite 30B (MMT‐30B) and Cloisite 15A (MTT‐15A), employed as flame retardants. The characterization of the coatings was carried out by thermogravimetric analysis (TGA), X‐ray diffraction, and scanning electron microscopy. After application of the coatings on carbon steel substrates, flammability tests were performed. The coatings with 2 wt % MMT‐30B showed overall better results, especially in the flammability tests. Flames spread less on these coatings than on the other systems. However, when the surface and bottom temperatures were analyzed by the cone calorimeter test, the samples prepared with 4 wt % MMT‐15A were considered safer to be applied in fire scenarios. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45031.

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“…24 Natural montmorillonite (MMT) consists of negatively charged layered silicates. 25 It is noteworthy that organoclay used in this research is modified with 15-30 wt% octadecylamine and therefore some percentages of the organoclay surface still remain negatively charged. The clay may be deactivating free radicals catalytically on their surface.…”

Section: Fourier Transform Infrared Spectroscopymentioning

confidence: 99%

Effect of organoclay loading on the crosslinking and degradation of irradiated ethylene(vinyl acetate) copolymer/natural rubber nanocomposites

Munusamy

Ismail

Ratnam

2012

Journal of Reinforced Plastics and Composites

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The effects of organoclay loading and electron beam irradiation on the crosslinking and degradation of ethylene(vinyl acetate) copolymer (EVA)/natural rubber, grade Standard Malaysian Natural Rubber (SMR L) nanocomposites was studied. The nanocomposites were prepared through the melt blending technique with the ratio of EVA: SMR L fixed at 50:50 and organoclay loading varied from 0 to10 phr. The samples were irradiated using a 3.0 MeV EB machine with doses ranging from 50 to 200 kGy. At irradiation dose 50-150 kGy organoclay reduces the crosslinking yield significantly as evidenced from the gel fraction results and thus, storage modulus decreases and tan delta max values increases for the nanocomposites compared to neat EVA/SMR L. However, at 200 kGy the crosslinking yield was not much affected by the organoclay and thus, the storage modulus increased and tan delta max decreased. Scanning electron micrograph images show that different level of irradiation dose form different phase morphology on the nanocomposites. Analysis on Fourier transform infrared spectrums and carbonyl index values proved that the nanoscale dispersion and barrier effect of organoclay influence the crosslinking and degradation of the nanocomposites thus gives a significant effect on the dynamic mechanical properties.

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Probing the role of surface treated montmorillonite on the properties of semi-aromatic polyamide/clay nanocomposites

Cited by 43 publications

References 45 publications

Polymer/clay nanocomposites based on aliphatic–aromatic polyamide containing thiazole ring and new organomodified nanosilicate layers: Synthesis, characterization, and thermal properties study

Polymer/clay nanocomposites based on aliphatic–aromatic polyamide containing thiazole ring and new organomodified nanosilicate layers: Synthesis, characterization, and thermal properties study

Development of acrylic‐based powder coatings with incorporation of montmorillonite clays

Effect of organoclay loading on the crosslinking and degradation of irradiated ethylene(vinyl acetate) copolymer/natural rubber nanocomposites

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