Fabrication of (PVA-PAA) Blend-Extracts of Plants Bio-Composites and Studying Their Structural, Electrical and Optical Properties for Humidity Sensors Applications

We have synthesized a nanocomposite of a new type as a humidity sensor and studied its electric and optical properties. The carboxymethyl cellulose-starch-copper oxide nanocomposite is prepared with different concentrations of copper oxide nanoparticles. The DC electric conductivity of the carboxymethyl cellulose-starch-copper oxide system was tested at room temperature. The results show that the DC conductivity of the blend increases with the copper oxide concentration. The optical properties of the nanocomposite are measured in the range of wavelengths (220-800) nm. The results show that the absorbance of the blend increases with the concentration of copper oxide nanoparticles, whereas the energy band gap decreases. With the purpose to use the system as a humidity sensor, its electric capacitance was measured on different samples in the range of humidity (40-90) RH%. The experimental results have shown that the carboxymethyl cellulose-starch-copper oxide nanocomposite has a higher sensivity in the humidity range (60-90) RH%.

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“…The absorption coefficient of (CMC-starch-CuO) nanocomposites is determined by the relation [12] = 2.303 ,…”

Section: Methodsmentioning

confidence: 99%

Development of a New Humidity Sensor Based on (Carboxymethyl Cellulose–Starch) Blend with Copper Oxide Nanoparticles

Hadi

Hashim

2017

Ukr. J. Phys.

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“…(PVA-PEO) blend chains, which in turn makes the polymer chains more flexible and hence enhances the A.C electrical conductivity [26]. Also, the increase in conductivity with increase the additive concentration may be attributed to increase the charge carriers numbers in polymer blend [27][28][29][30][31][32][33][34][35].…”

Section: Methodsmentioning

confidence: 99%

Structural, Dielectric and Optical properties for (Polyvinyl Alcohol–Polyethylene Oxide- Manganese Oxide) Nanocomposites

Hashim¹,

Habeeb

Jebur³

2019

Egypt. J. Chem.

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“…Figure 2 shows the spectral dependence of the absorbance of the (PS-Cr 2 O 3/ ZnCoFe 2 O 4 ) composites with different concentrations of salt. The absorbance is very large in the UV-region; this decay becomes relatively slower in the visible and near infrared regions, this attributed to the absorbance of polymers in the UV-region [23][24][25][26][27][28]. Figure 3 shows that transmittance spectrum as a function of wavelength for (PS-Cr 2 O 3 / ZnCoFe 2 O 4 ) nanocomposite.…”

Section: The Absorbance and Transmittancementioning

confidence: 99%

Structural and Optical Properties of Novel (PS-Cr2O3/ ZnCoFe2O4) Nanocomposites For UV and Microwave Shielding

Habeeb

Hashim²,

Hayder

2019

Egypt. J. Chem.

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Fabrication of (PVA-PAA) Blend-Extracts of Plants Bio-Composites and Studying Their Structural, Electrical and Optical Properties for Humidity Sensors Applications

Cited by 54 publications

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Development of a New Humidity Sensor Based on (Carboxymethyl Cellulose–Starch) Blend with Copper Oxide Nanoparticles

Development of a New Humidity Sensor Based on (Carboxymethyl Cellulose–Starch) Blend with Copper Oxide Nanoparticles

Structural, Dielectric and Optical properties for (Polyvinyl Alcohol–Polyethylene Oxide- Manganese Oxide) Nanocomposites

Structural and Optical Properties of Novel (PS-Cr2O3/ ZnCoFe2O4) Nanocomposites For UV and Microwave Shielding

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