Exfoliation of montmorillonite and related properties of clay/polymer nanocomposites

Zhu, Ting; Zhou, Chun Hui; Kabwe, Freeman Bwalya; Wu, Qi; Li, Chun Sheng; Zhang, Jun Rui

doi:10.1016/j.clay.2018.12.006

Cited by 281 publications

(127 citation statements)

References 173 publications

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“…Numerous studies have shown that the introduction of nanoclay into a polymeric matrix can provide a wide range of property enhancements, such as increased composite stiffness and strength, enhanced gas barrier properties, improved flam retardancy, and reduced smoke generation compared to the virgin polymer and conventional composites. These improvements are obtained at significantly lower loading level than those of traditional fillers (Cui et al, 2015;Guo et al, 2018;Istrate and Chen, 2018;Liu et al, 2012;Zhu et al, 2019).…”

Section: Introductionmentioning

confidence: 90%

PVC - clay nanocomposites: Preparation, mechanical and thermal properties

Sadak

El-Komy

Motawie

et al. 2019

Journal of Scientific Research in Science

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Poly (vinyl chloride) (PVC) nanocomposite have been prepared via solution technique. The nanocomposite structure based on the used modifier type and content was characterized with (XRD), (TEM) and (FTIR) spectroscopy. The results indicate the interaction of PVC into the clay layers giving an exfoliated PVC nanocomposites. FTIR data of the composites did not show any remarkable change in PVC. The influence of the modifier content (i.e. 1, 2, 3, 4, 5, and 6 wt %) and type on the PVC was tested through physico-mechanical properties and thermal stability. The study demonstrated improved mechanical properties and thermal stability for the PVC/ carboxylated salts (3 wt %) composites compared with those of octadecyl amine (ODA) at the same loading. PVC/clay-ODA composite had worse thermal stability than that of unfilled PVC. Incorporation adipate acid salt (3%) results in a significant improvement of the thermal stability of PVC at 800 o C.

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Section: Introductionmentioning

confidence: 90%

PVC - clay nanocomposites: Preparation, mechanical and thermal properties

Sadak

El-Komy

Motawie

et al. 2019

Journal of Scientific Research in Science

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“…The commonly used techniques for clay dispersion are mechanical stirring, ultrasonication, high shear mixing, ball milling, high pressure mixing, and the slurry process. From the literature reviewed, it shows that mechanical stirring alone is not efficient enough to prepare high performance nanocomposites [7,14,15]. High shear mixing [16] or ultrasonication [17] is often employed in the mixing process to enhance the dispersion of the nanoclay.…”

mentioning

confidence: 99%

The Effect of Bi-Functionalized MMT on Morphology, Thermal Stability, Dynamic Mechanical, and Tensile Properties of Epoxy/Organoclay Nanocomposites

Chee

Jawaid

2019

Polymers

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In this work, the optimum filler loading to prepare epoxy/organoclay nanocomposites by the in-situ polymerization method was studied. Bi-functionalized montmorillonite at different filler loading (0.5, 1.0, 2.0, 4.0 wt %) was dispersed in epoxy resin by using a high shear speed homogenizer. The effect on morphology, thermal, dynamic mechanical, and tensile properties of the epoxy/organoclay nanocomposites were studied in this work. Wide-angle X-ray scattering (WAXS) and field emission scanning electron microscope (FESEM) studies revealed that possible intercalated structures were obtained in epoxy/organoclay nanocomposites. Thermogravimetric analysis (TGA) shows that epoxy/organoclay nanocomposites exhibit higher thermal stability at the maximum and final decomposition temperature, as well as higher char content, compared to pristine epoxy. The dynamic mechanical analysis (DMA) indicate that storage modulus (E′), loss modulus (E″), cross-link density and glass transition temperature (Tg) of the nanocomposites were improved with organoclay loading up to 1 wt %. Beyond this loading limit, the deterioration of properties was observed. A similar trend was also observed on tensile strength and modulus. We concluded from this study that organoclay loading up to 1 wt % is suitable for further study to fabricate hybrid nanocomposites for various applications.

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“…MMT was extensively used as filler for preparing polymer/MMT nanocomposites due to their unique properties like nanometer scale thickness and high aspect ratio [3,4]. MMT is a 2:1 phyllosilicate mineral with two tetrahedral silica sheets that sandwich a central alumina octahedral sheet [5]. The effective dispersion of MMT filler into the polymer matrix is a key factor in determining the final properties of the polymer/MMT nanocomposites.…”

Section: Introductionmentioning

confidence: 99%