Preparation and physical properties of polypyrrole/zeolite composites

Tarmizi, Emma Ziezie Mohd; Baqiah, Hussein; Talib, Zainal Abidin; Kamari, Halimah Mohamed

doi:10.1016/j.rinp.2018.09.043

Cited by 21 publications

(6 citation statements)

References 38 publications

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“…They can be compiled using oxidation or reduction reaction (doping process) [40]. Among different conducting polymers, polypyrrole (PPy) has attracted researchers' attention as an adsorbent for its outstanding properties such as high conductivity, non-toxicity, easy prepa-ration methods, electrical and thermal stability, strong mechanical properties, availability at an industrial scale, and remarkable capacity for heavy metals adsorption from water effluents [41][42][43][44]. Thus, these remarkable properties granted polypyrrole many prospective applications in electronic and electrochromic devices, supercapacitors, corrosion protection, and fabrication of membranes with good separation and antifouling properties [45][46][47].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a Novel (PVDF/MWCNT/Polypyrrole) Antifouling High Flux Ultrafiltration Membrane for Crude Oil Wastewater Treatment

et al. 2022

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The present work deals with the fabrication of novel poly(vinylidene fluoride) (PVDF)/Multi-wall Carbon Nanotubes (MWCNT)/Polypyrrole (PPy) ultrafiltration membrane by phase inversion technique for the removal of crude oil from refinery wastewater. In situ polymerization of pyrrole with different concentrations of MWCNT ranging from 0.025 wt.% to 0.3 wt.% in PVDF prepared solutions. Measurement of permeability, porosity, contact angle, tensile strength, zeta potential, rejection studies and morphological characterization by scanning electron microscopy (SEM) were conducted. The results showed that membrane with (0.05% MWCNT) concentration had the highest permeability flux (850 LMH/bar), about 17 folds improvement of permeability compared to pristine PVDF membrane. Moreover, membrane rejection of crude oil reached about 99.9%. The excellent performance of this nanocomposite membrane suggests that novel PVDF modification with polypyrrole had a considerable effect on permeability with high potential for use in the treatment of oily wastewater in the refinery industry.

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Section: Introductionmentioning

confidence: 99%

Fabrication of a Novel (PVDF/MWCNT/Polypyrrole) Antifouling High Flux Ultrafiltration Membrane for Crude Oil Wastewater Treatment

et al. 2022

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“…Negatively charged zeolite platform enhanced by natural polymers and other nutrients for optimum crop performance. Adapted from[74,75].…”

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confidence: 99%

The Role of Nanotechnology in the Fortification of Plant Nutrients and Improvement of Crop Production

et al. 2019

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Nutrient deficiency in food crops is seriously affecting human health, especially those in the rural areas, and nanotechnology may become the most sustainable approach to alleviating this challenge. There are several ways of fortifying the nutrients in food such as dietary diversification, use of drugs and industrial fortification. However, the affordability and sustainability of these methods have not been completely achieved. Plants absorb nutrients from fertilizers, but most conventional fertilizers have low nutrient use and uptake efficiency. Nanofertilizers are, therefore, engineered to be target oriented and not easily lost. This review surveys the effects of the addition of macro- and nanonutrients to soil, the interaction, and the absorption capability of the plants, the environmental effect and food content of the nutrients. Most reports were obtained from recent works, and they show that plants nutrients could be enriched by applying nanoparticulate nutrients, which are easily absorbed by the plant. Although there are some toxicity issues associated with the use of nanoparticles in crop, biologically synthesized nanoparticles may be preferred for agricultural purposes. This would circumvent the concerns associated with toxicity, in addition to being pollution free. This report, therefore, offers more understanding on the application of nanotechnology in biofortification of plant nutrients and the future possibilities offered by this practice. It also highlights some of the ills associated with the introduction of nanomaterials into the soil for crop’s improvement.

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“…This leads to the conclusion that zeolite particles are incorporated into the amorphous polymer matrix. 23 The semi-quantitative analysis of the zeolite analytic peak was applied to calculate the weight fraction of zeolite (w f ) in the LDPE/NaA zeolite composites (Table 1). It can be seen that the weight fraction of zeolite in the samples corresponds very well with the zeolite feed composition.…”

Section: Resultsmentioning

confidence: 99%

“…With an increase of weight fraction of zeolite in the composites, both LDPE and NaA zeolite peaks slightly shift towards higher 2 θ . This leads to the conclusion that zeolite particles are incorporated into the amorphous polymer matrix 23 …”

Section: Resultsmentioning

confidence: 99%

Thermal and dielectric properties of low‐density polyethylene/NaA zeolite composites

Marinković

Popović

Jovanović

et al. 2021

Polymer International

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The effect of the weight fraction of NaA zeolite on thermal properties (specific heat capacity, thermal diffusivity, thermal conductivity) and dielectric properties (electrical conductivity, real and imaginary electric permittivity) of composites based on low-density polyethylene (LDPE) and NaA zeolite is examined. Composite samples containing from 5 to 30 wt% zeolite are prepared using the compression molding technique. The degree of dispersion and the weight fraction of filler in the LDPE/NaA zeolite composites are determined using X-ray diffraction. A linear decrease in the values of the specific heat capacity with an increase in the weight fraction of zeolite is observed using differential scanning calorimetry. The laser flash method is used to determine the thermal diffusivity of the composites. An increase in effective thermal diffusivity and abrupt increase in the range from 15 to 20 wt% of zeolite are established. It is demonstrated that effective thermal conductivity increases with an increase in the weight fraction of zeolite, and an abrupt increase in the range from 15 to 20 wt% is observed. Dielectric spectroscopy measurements are performed to determine the real and imaginary parts of permittivity. An increase of real and imaginary parts of permittivity of LDPE/NaA zeolite composites, with increasing weight fraction of zeolite, is established. Two relaxation peaks of the imaginary parts of permittivity of LDPE/NaA zeolite composites are detected. An increase of electrical conductivity with increasing weight fraction of zeolite and abrupt increase in the range 15 to 20 wt% are noticed.

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Preparation and physical properties of polypyrrole/zeolite composites

Cited by 21 publications

References 38 publications

Fabrication of a Novel (PVDF/MWCNT/Polypyrrole) Antifouling High Flux Ultrafiltration Membrane for Crude Oil Wastewater Treatment

Fabrication of a Novel (PVDF/MWCNT/Polypyrrole) Antifouling High Flux Ultrafiltration Membrane for Crude Oil Wastewater Treatment

The Role of Nanotechnology in the Fortification of Plant Nutrients and Improvement of Crop Production

Thermal and dielectric properties of low‐density polyethylene/NaA zeolite composites

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