Improving the Polypropylene-Clay Composite Using Carbon Nanotubes as Secondary Filler

Olalekan, Salawudeen Taofeeq; Muyibi, Suleyman Aremu; Shah, Qasim Hussain; Al-Khatib, Ma An Fahmi Rashid; Yusof, Faridah; Qudsieh, Isam Y.

doi:10.3844/erjsp.2010.68.72

Cited by 15 publications

(10 citation statements)

References 10 publications

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“…This is evidenced by the highest diffraction peak which was about 24.73Å. As discussed by Olalekan et al, 2010 [19], such a characteristic implies that nano particles were not well dispersed in the composite and thus lead to the formation of agglomerates (characteristics of nanomaterials) in the system. The diffraction angle and interplanar spacing values are summarized in Table 3.…”

Section: X-ray Diffraction Analysis (Xrd)mentioning

confidence: 87%

Enhancing the Mechanical Properties of Cross-Linked Rubber-Toughened Nanocomposites via Electron Beam Irradiation

Jamal

Anuar

Bahri

2011

Journal of Nanotechnology

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Improving the mechanical properties of a pristine system is the main target of developing nanocomposites. The nanocomposites systems were first prepared via intercalation technique with different organophilic montmorillonite (OMMT) loading. Two types of cross-linking techniques were applied, namely, as maleic anhydride polyethylene (MAPE) and electron beam (EB) irradiated system. The effectiveness of these systems was then compared with the control one and analyzed based on the mechanical tests and morphological examination. The mechanical tests revealed that control, MAPE, and EB irradiated systems had attained the optimum mechanical properties at 4 vol% OMMT content. EB irradiated unit of a dose of 100 kGy showed excellent mechanical properties with higher crosslinking degree which were proved by gel content analysis. X-ray diffraction (XRD) analysis confirmed the existence of delamination structure with MAPE and EB irradiation techniques based on the disappearance of characteristic peak. The degree of delamination was further investigated by transmission electron microscope (TEM).

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Section: X-ray Diffraction Analysis (Xrd)mentioning

confidence: 87%

Enhancing the Mechanical Properties of Cross-Linked Rubber-Toughened Nanocomposites via Electron Beam Irradiation

Jamal

Anuar

Bahri

2011

Journal of Nanotechnology

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“…30 Figure 4 shows the TGA curves of LDH and modified LDH with diacids of PA, PPh and PV. Three mass-loss steps are detected for LDH.…”

Section: Thermal Analysismentioning

confidence: 99%

“…Removal of water molecules by de-hydroxylation process was observed at about 400 °C and the third weight loss is corresponded to the removal of the interlayer carbonate anion. 30 …”

Section: Thermal Analysismentioning

confidence: 99%

“…2 Synthesis method of the reactions also plays a significant role in green chemistry. One of the novels, powerful and simple method 30 for the synthesis of nanomaterial is sonochemistry that led to high activity in catalysis due to their particles size and high surface area. 3,4 Also, the ultrasonic irradiation provides a clean media to prepare nanomaterials in a short reaction time.…”

Section: Introductionmentioning

confidence: 99%

“…30 tetracarboxylic dianhydride) (PMDA) was purchased from Merck Chemical CO. (Germany). Amino acids of L-leucine, L-alanine, L-methionine, L-phenylalanine and L-valine were used without further purification.…”

mentioning

confidence: 99%

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Ultrasonic-assisted synthesis and characterization of layered double hydroxides intercalated with bioactive N,N′-(pyromellitoyl)-bis-l-α-amino acids

2013

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In this study Mg/Al layered double hydroxides (LDHs) and organo-modified chiralLDHs were synthesized in one step under green conditions. Co-precipitation reaction of the Al(NO 3 ) 3 . 9H 2 O, Mg(NO 3 ) 2 . 6H 2 O and different biocompatible N,N-(pyromellitoyl)-bis-L-amino acids was carried 10 out in aqueous solution in a short time by ultrasonic technique. Field emission scanning electron microscopy and transmission electron microscopy techniques showed that the resulting products have good crystallinity and uniform morphology. The presence of the bioactive surfactants in the interlayer space of LDH was confirmed by the Fourier transformed infrared spectroscopy, X-ray diffraction (XRD) and thermogravimetry analysis techniques. As expected, the positions of the 15 basal reflections in the XRD patterns of modified samples are shifted to higher d value indicating the expansion in the interlayer distance. Thermal properties were investigated by thermogravimetry analysis technique.

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Rheology, crystallization behavior, and dielectric study on molecular dynamics of polypropylene composites with multiwalled carbon nanotubes and clay

et al. 2015

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The study is focused on joint effects of two nanofillers in polypropylene (PP) reinforced with 3 wt% organo-clay (C) and 0.1-5 wt% multi-wall carbon nanotubes (MWCNTs). The composites were produced by extrusion and characterized by rheology, differential scanning calorimeter (DSC), thermally stimulated depolarization currents (TSDC), and dielectric relaxation spectroscopy (DRS). Rheological data indicates a formation of a network structure related to percolation above 1 wt% nanotubes. The flow activation energy (Ea) decreases above the percolation threshold, thus, the presence of clay improves the debundling of MWCNTs and releases the segmental motion of polymer chains. The clay does not affect the crystallization behavior of PP, but the nucleation is enhanced strongly by the MWCNTs. Dielectric measurements reveal that the presence of clay affects the molecular mobility of PP at the amorphous phase. The DSC results imply that around 80 C a cold crystallization process occur in the PP phase which has a significant impact on the dielectric segmental relaxation process and gives rise to the appearance of an additional process, the so called "interfacial" relaxation process. This new relaxation process in the threephase composites was attributed to an interfacial polarization process due to blocking of charge carriers at polymer/clay interfaces. POLYM. COMPOS., 37:2756-2769, 2016

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Improving the Polypropylene-Clay Composite Using Carbon Nanotubes as Secondary Filler

Cited by 15 publications

References 10 publications

Enhancing the Mechanical Properties of Cross-Linked Rubber-Toughened Nanocomposites via Electron Beam Irradiation

Enhancing the Mechanical Properties of Cross-Linked Rubber-Toughened Nanocomposites via Electron Beam Irradiation

Ultrasonic-assisted synthesis and characterization of layered double hydroxides intercalated with bioactive N,N′-(pyromellitoyl)-bis-l-α-amino acids

Rheology, crystallization behavior, and dielectric study on molecular dynamics of polypropylene composites with multiwalled carbon nanotubes and clay

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