Smart films based on bacterial cellulose nanofibers modified by conductive polypyrrole and zinc oxide nanoparticles

Pirsa, Sajad; Shamusi, Tohid; Kia, Ehsan Moghaddas

doi:10.1002/app.46617

Cited by 67 publications

(33 citation statements)

References 55 publications

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“…Increasing graphene concentration, surface resistivity values decreased. Consistent with a study where smart films were formed by coating with conductive polymers, the concentration of conductive material was found to be an important parameter affecting the electrical resistance and the electrical resistance decreased as the concentration increased . The highest surface resistivity value (2.53 × 10 4 Ω/sq) was obtained at 200 g/kg graphene concentration rate.…”

Section: Resultsmentioning

confidence: 84%

“…Consistent with a study where smart films were formed by coating with conductive polymers, the concentration of conductive material was found to be an important parameter affecting the electrical resistance and the electrical resistance decreased as the concentration increased. 32 The highest surface resistivity value (2.53 × 10 4 Ω/sq) was obtained at 200 g/kg graphene concentration rate. Similarly, in another study where polyester fibers were coated with conductive material by dip coating, electrical resistance values changed between 10 2 and 10 3 Ω.…”

Section: Electrical Resistivity Resultsmentioning

confidence: 88%

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Electrical resistivity and thermal conductivity properties of graphene‐coated woven fabrics

Manasoglu

Celen

Kanık

et al. 2019

J of Applied Polymer Sci

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In this study, it was aimed to develop electrically and thermal conductive textiles surfaces. Pretreated polyester fabrics were coated with nano graphene powders at different concentration rates (50, 100, and 200 g/kg) by knife over roll technique. Electrical resistivity, thermal conductivity, thickness and mass per unit area measurements, bending rigidity, and abrasion resistance tests of coated fabrics were performed. Surface resistivity measurements of coated fabrics were made according to ASTM D 257 standard with Keithley 8009 Resistivity Test Fixture. Surface electrical resistivity values of coated fabrics decreased with increasing concentration rates. Of note, 2.53 × 104 Ω/sq surface resistivity value was obtained at 200 g/kg graphene concentration rate. Thermal conductivity measurements of coated fabrics were made according to JIS R 2618 standard with Quick Thermal Conductivity Meter (QTM‐710). Thermal conductivity property of fabrics improved depending on graphene concentration. The highest thermal conductivity value (0.4243 W/mK) was obtained at 200 g/kg graphene concentration rate. One of the most important results of the study was that a maximum weight loss of 0.40% was observed in the abrasion resistance test even after 100 000 cycles. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48024.

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Section: Resultsmentioning

confidence: 84%

Section: Electrical Resistivity Resultsmentioning

confidence: 88%

Electrical resistivity and thermal conductivity properties of graphene‐coated woven fabrics

Manasoglu

Celen

Kanık

et al. 2019

J of Applied Polymer Sci

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“…Although the concept of smart packaging is different from active packaging, it can be said that smart packaging is used to control the efficiency of active packaging systems . The smart materials in food packaging have the ability to absorb oxygen that stops the growth of microbes and helps to maintain the quality of the food …”

Section: Introductionmentioning

confidence: 99%

Sesame Oil Oxidation Control by Active and Smart Packaging System Using Wheat Gluten/Chlorophyll Film to Increase Shelf Life and Detecting Expiration Date

Chavoshizadeh

Pirsa

Mohtarami

2020

Euro J Lipid Sci & Tech

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In this study, a smart biodegradable film based on wheat gluten modified with chlorophyll (WG/Ch) is presented. The effect of chlorophyll on the antioxidant activity and mechanical properties of WG/Ch film is studied. Scanning electron microscopy and Fourier‐transform infrared spectroscopy (FT‐IR) analyses are used to study the structure and chemical composition of gluten‐based films. The WG/Ch film is used in the packaging of sesame oil. The effect of WG/Ch film on increasing the shelf life and detecting expiration time of oil is studied. FT‐IR results show that weak interactions are created between gluten and chlorophyll. The antioxidant activity of the WG film is 60% and it increases to 85% by the addition of chlorophyll. The results show that with the increasing storage time of oil samples, oxidative indices are increased, but the WG/Ch film decreases the sesame oil oxidation significantly (almost in the all oxidative indices 50% decrease is observed). Practical Applications: The WG/Ch film is used in the packaging of sesame oil. The effect of WG/Ch film on the increasing of shelf life and detecting expiration time of oil is studied. By increasing storage time and oxidant, acidity, acid number, PA, and oil color change are increased, but the WG/Ch active film decreases the sesame oil oxidation significantly. Also, by examining the color properties of the active film, it is observed that with increasing storage time and oxidant percent, the color of the film is changed (from green to yellow), which can be used to estimate the oil expiration time. It should be mentioned that the film's color changes are visible to the naked eye.

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“…π‐conjugated molecules and polymers, as well as hybrid organic–inorganic materials are much investigated for tackling challenges in the domain of optoelectronic and photonic devices, including photovoltaics, flexible lighting and displays, and smart components …”

Section: Introductionmentioning

confidence: 99%

Template process for engineering the photoluminescence of PVK and PPV‐based nanowires

Mbarek

Garreau

Massuyeau

et al. 2019

J of Applied Polymer Sci

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Blends or stacking layers of two complementary materials are the dominant methods to get a strong donor-acceptor behavior for in-solution-processed thin film devices. These methods result in different local arrangement of the two species, a central point for tuning the donor-acceptor. In this work, it is proposed to organize a donor (poly[vinylcarbazole], PVK) and an acceptor (poly[para-phenylenevinylene], PPV) in a nanowire geometry. A two-step template process was used to fabricate coaxial nanowires with PPV and PVK alternatively as the core or the shell material, as shown by morphological characterization and micro-Raman spectroscopy study. The differences of the photoluminescence properties of these two types of coaxial nanowires compared with those of PVK-PPV blend nanowires and of pure PPV and PVK nanowires are discussed by considering the local polymer arrangement and the exciton diffusion length. Nano-sources, as well as nanostructured light emitting diodes, could take advantage of this 1D-like morphology for light emission control.

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Smart films based on bacterial cellulose nanofibers modified by conductive polypyrrole and zinc oxide nanoparticles

Cited by 67 publications

References 55 publications

Electrical resistivity and thermal conductivity properties of graphene‐coated woven fabrics

Electrical resistivity and thermal conductivity properties of graphene‐coated woven fabrics

Sesame Oil Oxidation Control by Active and Smart Packaging System Using Wheat Gluten/Chlorophyll Film to Increase Shelf Life and Detecting Expiration Date

Template process for engineering the photoluminescence of PVK and PPV‐based nanowires

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