The Experts below are selected from a list of 165 Experts worldwide ranked by ideXlab platform
Alirio E Rodrigues - One of the best experts on this subject based on the ideXlab platform.
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Aroma-Loaded Microcapsules with Antibacterial Activity for Eco-Friendly Textile Application: Synthesis, Characterization, Release, and Green Grafting
Industrial & Engineering Chemistry Research, 2017Co-Authors: Asma Sharkawy, Isabel Fernandes, Maria Filomena Barreiro, Alirio E Rodrigues, Tamer ShoeibAbstract:Fragrant and antimicrobial properties were conferred to cotton fabrics following microencapsulation using green materials. Limonene and vanillin microcapsules were produced by complex coacervation using chitosan/gum Arabic as shell materials and tannic acid as hardening agent. The effect of two emulsifiers; Span 85 and polyglycerol polyricinoleate (PGPR), on the encapsulation efficiency (EE%), microcapsule’s size and morphology, and cumulative release profiles was studied. The mean diameter of the produced microcapsules ranged between 10.4 and 39.0 μm, whereas EE% was found to be between 90.4% and 100%. The use of Span 85 resulted in mononuclear morphology while PGPR gave rise to polynuclear structures, regardless of the core material (vanillin or limonene). The obtained microcapsules demonstrated a sustained release pattern; namely the total cumulative release of the active agents after 7 days at 37 ± 1 °C was 75%, 52% and 19.4% for the polynuclear limonene microcapsules, the mononuclear limonene microca...
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Characterization and evaluation of commercial fragrance microcapsules for Textile Application
Journal of The Textile Institute, 2011Co-Authors: Carla Sofia Nogueira Rodrigues Teixeira, Maria Filomena Barreiro, Isabel Martins, Vera G. Mata, Alirio E RodriguesAbstract:In this paper, some commercial microcapsule samples, containing different fragrances used for Textile Application purposes, were characterized and evaluated. Microcapsule samples were evaluated in terms of particle size, morphology, shell material composition, and fragrance intensity. The effectiveness of the Textile impregnation and its durability were assessed. The selection of samples used in each study was made in order to the specific goals of characterization and evaluation of microcapsules. Lemon_Bayer, Lemon_Focor, Lemon_Horquim, Strawberry_Horquim, and Jasmine_Focor samples were used to study the morphology and particle size distribution, and it was observed that microcapsules have a spherical shape with size between 2 and 6 m. The chemical composition of Lavender_Horquim, Mints_Horquim, Eucaliptus_Focor, and Apple_Focor samples was checked/ confirmed and was based on melamine copolymers including melamine-formaldehyde ones. Lemon_Horquim microcapsules were impregnated on Textile substrates, and ...
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scentfashion microencapsulated perfumes for Textile Application
Chemical Engineering Journal, 2009Co-Authors: Sofia N. Rodrigues, Isabel Fernandes, Maria Filomena Barreiro, Isabel Martins, Vera G. Mata, Paula Gomes, Alirio E RodriguesAbstract:Abstract This work is a contribution to the introduction of emergent technologies in the Textile sector, namely the microencapsulation of fragrances and its Application to obtain added-value products. Interfacial polymerization was used to produce polyurethane/urea (PUU) microcapsules with a perfume for industrial Application on Textile substrate having in view man suits production. The extent of reaction of PUU microcapsules formation was followed by Fourier transform infrared spectroscopy. Size distribution and morphology of the produced microcapsules were studied using particle size analysis, optical microscopy and scanning electron microscopy. Impregnation on Textile substrates was tested both at laboratory level and at industrial scale. The fragrance release from Textile substrates was measured with headspace chromatography. The content of microcapsules was released with light abrasion to simulate day-to-day wear, and fabrics impregnated at laboratory scale have survived to 9000 abrasion cycles. Microcapsules have continued to release aroma up to five dry cleaning washing cycles.
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Microencapsulation of limonene for Textile Application
Industrial and Engineering Chemistry Research, 2008Co-Authors: Sofia N. Rodrigues, Victor Garcia Mata, Filomena Barreiro, Isabel Fernandes, I. M. Martins, Alirio E RodriguesAbstract:Polyurethane-urea microcapsules with limonene oil as the active agent were produced by interfacial polymerization, and their suitability for Textile Applications was studied. Experimental conditions for the Textile substrates impregnation were based on industrial requirements and set up at laboratory scale using a minifoulard. The success of the polymerization reaction leading to the formation of the polyurethane-urea shell was checked by Fourier transform infrared spectroscopy. Particle size distributions and morphology of the microcapsules were studied using a particle size analyzer (Coulter LS230), optical microscopy, and scanning electron microscopy. The effectiveness of the Textiles impregnation and the durability of the impregnation effect were evaluated by scanning electron microscopy and by headspace/GC/FID. Under the present research, a product was developed and its performance, in regard to industrial requirements, was successfully tested.
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Microencapsulation of limonen oil for Textile Application
2008Co-Authors: Sofia N. Rodrigues, Isabel Fernandes, Vera G. Mata, M.f. Barreiro, Alirio E RodriguesAbstract:Project SCENTFASHION, contract ADI/2004/M2.3/0015POCI funded by Agencia de Inovacao(AdI) in the framework of POCI 2010-Medida 2.3-IDEIA.
Isabel Fernandes - One of the best experts on this subject based on the ideXlab platform.
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Aroma-Loaded Microcapsules with Antibacterial Activity for Eco-Friendly Textile Application: Synthesis, Characterization, Release, and Green Grafting
Industrial & Engineering Chemistry Research, 2017Co-Authors: Asma Sharkawy, Isabel Fernandes, Maria Filomena Barreiro, Alirio E Rodrigues, Tamer ShoeibAbstract:Fragrant and antimicrobial properties were conferred to cotton fabrics following microencapsulation using green materials. Limonene and vanillin microcapsules were produced by complex coacervation using chitosan/gum Arabic as shell materials and tannic acid as hardening agent. The effect of two emulsifiers; Span 85 and polyglycerol polyricinoleate (PGPR), on the encapsulation efficiency (EE%), microcapsule’s size and morphology, and cumulative release profiles was studied. The mean diameter of the produced microcapsules ranged between 10.4 and 39.0 μm, whereas EE% was found to be between 90.4% and 100%. The use of Span 85 resulted in mononuclear morphology while PGPR gave rise to polynuclear structures, regardless of the core material (vanillin or limonene). The obtained microcapsules demonstrated a sustained release pattern; namely the total cumulative release of the active agents after 7 days at 37 ± 1 °C was 75%, 52% and 19.4% for the polynuclear limonene microcapsules, the mononuclear limonene microca...
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scentfashion microencapsulated perfumes for Textile Application
Chemical Engineering Journal, 2009Co-Authors: Sofia N. Rodrigues, Isabel Fernandes, Maria Filomena Barreiro, Isabel Martins, Vera G. Mata, Paula Gomes, Alirio E RodriguesAbstract:Abstract This work is a contribution to the introduction of emergent technologies in the Textile sector, namely the microencapsulation of fragrances and its Application to obtain added-value products. Interfacial polymerization was used to produce polyurethane/urea (PUU) microcapsules with a perfume for industrial Application on Textile substrate having in view man suits production. The extent of reaction of PUU microcapsules formation was followed by Fourier transform infrared spectroscopy. Size distribution and morphology of the produced microcapsules were studied using particle size analysis, optical microscopy and scanning electron microscopy. Impregnation on Textile substrates was tested both at laboratory level and at industrial scale. The fragrance release from Textile substrates was measured with headspace chromatography. The content of microcapsules was released with light abrasion to simulate day-to-day wear, and fabrics impregnated at laboratory scale have survived to 9000 abrasion cycles. Microcapsules have continued to release aroma up to five dry cleaning washing cycles.
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Microencapsulation of limonene for Textile Application
Industrial and Engineering Chemistry Research, 2008Co-Authors: Sofia N. Rodrigues, Victor Garcia Mata, Filomena Barreiro, Isabel Fernandes, I. M. Martins, Alirio E RodriguesAbstract:Polyurethane-urea microcapsules with limonene oil as the active agent were produced by interfacial polymerization, and their suitability for Textile Applications was studied. Experimental conditions for the Textile substrates impregnation were based on industrial requirements and set up at laboratory scale using a minifoulard. The success of the polymerization reaction leading to the formation of the polyurethane-urea shell was checked by Fourier transform infrared spectroscopy. Particle size distributions and morphology of the microcapsules were studied using a particle size analyzer (Coulter LS230), optical microscopy, and scanning electron microscopy. The effectiveness of the Textiles impregnation and the durability of the impregnation effect were evaluated by scanning electron microscopy and by headspace/GC/FID. Under the present research, a product was developed and its performance, in regard to industrial requirements, was successfully tested.
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Microencapsulation of limonen oil for Textile Application
2008Co-Authors: Sofia N. Rodrigues, Isabel Fernandes, Vera G. Mata, M.f. Barreiro, Alirio E RodriguesAbstract:Project SCENTFASHION, contract ADI/2004/M2.3/0015POCI funded by Agencia de Inovacao(AdI) in the framework of POCI 2010-Medida 2.3-IDEIA.
Rehman Muhammad Hassan - One of the best experts on this subject based on the ideXlab platform.
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Optimization of MEMS piezo-electric sensor for smart Textile Application / Muhammad Hassan Rehman
2018Co-Authors: Rehman Muhammad HassanAbstract:MEMS piezoelectric cantilever based sensor for smart Textile Application are useful to monitoring a various physiological parameter. Especially blood pressure necessary to measure which treat critical conditions like hypotension and hypertension and it can cause heart failures and attacks, strokes, dizziness and shock. Blood pressure is measured in millimeter of mercury(mmHg) units. During each heart beat blood pressure varies between systolic (maximum) and diastolic (minimum). Hence direct measure of heart beat can be considered as the determination of the blood pressure. Normal human systolic pressure is 120mmHg and diastolic pressure is 80mmHg. For blood pressure monitoring Application, health care industry combines smart shirt with compatible sensors which are required to operate in the range of 50mmHg-180mmHg. MEMS piezoelectric cantilever based sensors are widely in blood pressure measurement because it provides higher sensitivity to pressure, tunable sensitivity, simple structure and micro in size. In this research project, a U-shaped MEMS piezoelectric cantilever based sensor is designed and demonstrated using COMSOL Multiphysics software. Result obtained from the simulation is the deflection of the U-shaped cantilever when normal diastolic pressure 80mmHg is applied. Among other piezoelectric material Lead Zirconate Titanate (PZT-5H) as a sensing layer of U-shaped cantilever gives better sensitivity at diastolic condition (80mmHg) showing displacement and electric potential of 11.456μm and 2.0523V which is 41.40 higher than rectangle shaped cantilever. For the conclusion, a piezoelectric MEMS cantilever based sensor is successfully designed, simulated and optimized. Optimization parameter had also been performed at different length of cantilever which shows that longer gives greater deflection at diastolic condition and improves the sensitivity of sensor due to the uniform distribution of stress throughout the surface of cantilever. While by using U-shaped of cantilever the size of the cantilever reduces and gives better performance as compare to rectangle shaped cantilever.
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optimization of mems piezo electric sensor for smart Textile Application muhammad hassan rehman
2018Co-Authors: Rehman Muhammad HassanAbstract:MEMS piezoelectric cantilever based sensor for smart Textile Application are useful to monitoring a various physiological parameter. Especially blood pressure necessary to measure which treat critical conditions like hypotension and hypertension and it can cause heart failures and attacks, strokes, dizziness and shock. Blood pressure is measured in millimeter of mercury(mmHg) units. During each heart beat blood pressure varies between systolic (maximum) and diastolic (minimum). Hence direct measure of heart beat can be considered as the determination of the blood pressure. Normal human systolic pressure is 120mmHg and diastolic pressure is 80mmHg. For blood pressure monitoring Application, health care industry combines smart shirt with compatible sensors which are required to operate in the range of 50mmHg-180mmHg. MEMS piezoelectric cantilever based sensors are widely in blood pressure measurement because it provides higher sensitivity to pressure, tunable sensitivity, simple structure and micro in size. In this research project, a U-shaped MEMS piezoelectric cantilever based sensor is designed and demonstrated using COMSOL Multiphysics software. Result obtained from the simulation is the deflection of the U-shaped cantilever when normal diastolic pressure 80mmHg is applied. Among other piezoelectric material Lead Zirconate Titanate (PZT-5H) as a sensing layer of U-shaped cantilever gives better sensitivity at diastolic condition (80mmHg) showing displacement and electric potential of 11.456μm and 2.0523V which is 41.40 higher than rectangle shaped cantilever. For the conclusion, a piezoelectric MEMS cantilever based sensor is successfully designed, simulated and optimized. Optimization parameter had also been performed at different length of cantilever which shows that longer gives greater deflection at diastolic condition and improves the sensitivity of sensor due to the uniform distribution of stress throughout the surface of cantilever. While by using U-shaped of cantilever the size of the cantilever reduces and gives better performance as compare to rectangle shaped cantilever.
Sofia N. Rodrigues - One of the best experts on this subject based on the ideXlab platform.
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scentfashion microencapsulated perfumes for Textile Application
Chemical Engineering Journal, 2009Co-Authors: Sofia N. Rodrigues, Isabel Fernandes, Maria Filomena Barreiro, Isabel Martins, Vera G. Mata, Paula Gomes, Alirio E RodriguesAbstract:Abstract This work is a contribution to the introduction of emergent technologies in the Textile sector, namely the microencapsulation of fragrances and its Application to obtain added-value products. Interfacial polymerization was used to produce polyurethane/urea (PUU) microcapsules with a perfume for industrial Application on Textile substrate having in view man suits production. The extent of reaction of PUU microcapsules formation was followed by Fourier transform infrared spectroscopy. Size distribution and morphology of the produced microcapsules were studied using particle size analysis, optical microscopy and scanning electron microscopy. Impregnation on Textile substrates was tested both at laboratory level and at industrial scale. The fragrance release from Textile substrates was measured with headspace chromatography. The content of microcapsules was released with light abrasion to simulate day-to-day wear, and fabrics impregnated at laboratory scale have survived to 9000 abrasion cycles. Microcapsules have continued to release aroma up to five dry cleaning washing cycles.
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Microencapsulation of limonene for Textile Application
Industrial and Engineering Chemistry Research, 2008Co-Authors: Sofia N. Rodrigues, Victor Garcia Mata, Filomena Barreiro, Isabel Fernandes, I. M. Martins, Alirio E RodriguesAbstract:Polyurethane-urea microcapsules with limonene oil as the active agent were produced by interfacial polymerization, and their suitability for Textile Applications was studied. Experimental conditions for the Textile substrates impregnation were based on industrial requirements and set up at laboratory scale using a minifoulard. The success of the polymerization reaction leading to the formation of the polyurethane-urea shell was checked by Fourier transform infrared spectroscopy. Particle size distributions and morphology of the microcapsules were studied using a particle size analyzer (Coulter LS230), optical microscopy, and scanning electron microscopy. The effectiveness of the Textiles impregnation and the durability of the impregnation effect were evaluated by scanning electron microscopy and by headspace/GC/FID. Under the present research, a product was developed and its performance, in regard to industrial requirements, was successfully tested.
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Microencapsulation of limonen oil for Textile Application
2008Co-Authors: Sofia N. Rodrigues, Isabel Fernandes, Vera G. Mata, M.f. Barreiro, Alirio E RodriguesAbstract:Project SCENTFASHION, contract ADI/2004/M2.3/0015POCI funded by Agencia de Inovacao(AdI) in the framework of POCI 2010-Medida 2.3-IDEIA.
Gautam Basu - One of the best experts on this subject based on the ideXlab platform.
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exploration of future prospects of indian pineapple leaf an agro waste for Textile Application
Journal of Cleaner Production, 2017Co-Authors: Dipshika Hazarika, Seiko Jose, Nabaneeta Gogoi, Gautam BasuAbstract:Abstract Pineapple leaf fibre of certain varieties is widely used in Philippines for making apparels. In Indian subcontinent, pineapple leaves are wasted after harvesting the fruit, because of technology gap exists in the efficient extraction and lack of knowledge of subsequent processes for value addition to the fibre. Agricultural practices and seed varieties used in Indian subcontinent is also widely different from those of Philippines. An attempt has been made to extract and soften pineapple leaf fibre by decortication of leaves followed by water retting. The retting time was optimized at 7 days. The retted fibres were then degummed and bleached for better processibility and aesthetic look. The physio-chemical properties of fibres were analysed for its different uses. The degummed and bleached fibres were then successfully converted into Textile quality thread of 90 tex through suitable mechanical processing system. Mechanical properties of thread were found to be suitable to make sustainable novelty fabrics for apparel.