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Study of Thermal Behaviour of a Fabric Coated with Nanocomposites
K. Abid,
S. Dhouib,
F. Sakli
Issue:
Volume 3, Issue 4-1, July 2015
Pages:
1-6
Received:
10 November 2014
Accepted:
12 November 2014
Published:
22 November 2014
DOI:
10.11648/j.nano.s.2015030401.11
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Abstract: In this paper, the thermal insulation of coated fabric by nanocomposites has been studied. In fact, a resin/clay mixture was deposited on a 100 % cotton fabric and tested using a PASOD device for measuring the adiathermic power. The enhancement of fabric thermal insulation was noticed by calculating the difference in temperature between the inside and the outside of fabric. The innovation of this work is that the used clay is a Tunisian natural one which is simply a mixture of several sorts of clays (kaolinite, dolomite, calcite, illite, and quartz) and which has the advantage to be so cheap. Moreover, high clay percentages of 4,17 % to 37,8 % were applied to perform nanocomposites with, which never have been tried before. This clay has been cleaned, purified, dried, and steered with different resins which are actually used in the textile field for several applications such as comfort, elasticity or impermeability. It has been concluded that the increasing quantity of clay enhance significantly the thermal insulation of a 400 g/m2 sergey fabric 100% cotton. The mathematical equation has proved to be effective in predicting the fabric thermal resistance, simply by knowing the adiathermic power value. In fact, the measure of the thermal resistance demands a long time to be evaluated, but the adiathermic power can be evaluated by a concise operation which lasts only 15 min. This good agreement between these values has been demonstrated by mathematical formulas linking the clay percentage, coating, nanocomposite deposited quantities, and the used resin. The result of theses computations indicates that clay application in nanocomposites proved its importance because the thermal insulation properties of the fabric are really enhanced according to the clay percentage in the coating. The average of this enhancement is about 20 to 30 % and this is upon the used resin, the deposited quantity, and the clay percentage present in the nanocomposite.
Abstract: In this paper, the thermal insulation of coated fabric by nanocomposites has been studied. In fact, a resin/clay mixture was deposited on a 100 % cotton fabric and tested using a PASOD device for measuring the adiathermic power. The enhancement of fabric thermal insulation was noticed by calculating the difference in temperature between the inside ...
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Enhancement of Rigidity and Thermal Performances of Fabrics Through the Addition of Nanoadditifs
K. Abid,
A. Elamri,
S. Dhouib,
F. Sakli
Issue:
Volume 3, Issue 4-1, July 2015
Pages:
7-10
Received:
4 February 2015
Accepted:
5 February 2015
Published:
14 February 2015
DOI:
10.11648/j.nano.s.2015030401.12
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Abstract: In this study, the nanocomposites have been synthesized with the natural Tunisian clay which has the advantage of being cheap. In fact, it is composed of many kinds of clay (Kaolinite, Dolomite, calcite, Illite and Quartz). This clay has been cleaned, purified, dried and mixed with different resins currently used in many textile applications such as comfort, elasticity, impermeability … etc. The samples have been examined under MEB in order to identify them and ensure the formation of nanocomposites. The mixture resin/clay has been deposit on a 100% cotton fabric (400 g/m2) and tested on adiathermic power (AP%) measuring equipment. The parameter of thermal isolation of coated fabrics has been calculated through the difference in temperature between the interior and the exterior of the fabric in focus. It has been noticed that the increase in clay quantity improves significantly the thermal characteristics of the coated fabrics. The rigidity of the fabrics has also increased in terms of clay quantity, this proves that this new kind of fabric must be used in specific domains that compile their isolating characteristics and their increasing rigidity with the rate of clay inserted.
Abstract: In this study, the nanocomposites have been synthesized with the natural Tunisian clay which has the advantage of being cheap. In fact, it is composed of many kinds of clay (Kaolinite, Dolomite, calcite, Illite and Quartz). This clay has been cleaned, purified, dried and mixed with different resins currently used in many textile applications such a...
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Characterization of Recycled/ Virgin PET Polymers and their Composites
A. Elamri,
K. Abid,
O. Harzallah,
A. Lallam
Issue:
Volume 3, Issue 4-1, July 2015
Pages:
11-16
Received:
5 February 2015
Accepted:
10 February 2015
Published:
5 March 2015
DOI:
10.11648/j.nano.s.2015030401.13
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Abstract: In this investigation two Poly (Ethylene Terephthalate) (PET) polymers obtained from mineral water bottle and a virgin PET polymer were characterised by viscosimetry, differential scanning calorimetry (DSC) and rheology. Virgin PET showed better rheological and viscosimetric properties compared to recycled PET polymers. In order to improve properties when reprocessed at high temperatures, recycled polymers were blended with the virgin one. Rheological and thermal properties of extruded recycled/virgin (PET-V/R) composites showed a good rheological and thermal compatibility and stability compared to extruded pure recycled polymers.
Abstract: In this investigation two Poly (Ethylene Terephthalate) (PET) polymers obtained from mineral water bottle and a virgin PET polymer were characterised by viscosimetry, differential scanning calorimetry (DSC) and rheology. Virgin PET showed better rheological and viscosimetric properties compared to recycled PET polymers. In order to improve properti...
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Morphological and Mechanical Properties of Nanoclay Coated Fabric
A. Elamri,
K. Abid,
S. Dhouib,
F. Sakli
Issue:
Volume 3, Issue 4-1, July 2015
Pages:
17-24
Received:
25 February 2015
Accepted:
25 February 2015
Published:
5 March 2015
DOI:
10.11648/j.nano.s.2015030401.14
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Abstract: In this paper we report the morphological and mechanical characteristics of textile fabric coated with nanoclay composites. There has been an increasing consideration in nanotechnology during the present decade due to its enormous potential in applying and creating novel materials for enhanced properties and applications. Many studies were carried out in improving the textiles and clothing properties and performances by applying nanocomposites. In this work, nanocomposites were prepared from mixtures of resin/clay with various percentages of clay. The obtained coatings were then deposited on a cotton fabric. Morphology and properties of nanocomposites’ coated fabric were measured by DRX, scanning electron microscopy (SEM) and mechanical tests. The results showed that when observing the multilayers on SEM images, it can be deduced that nanocomposites using classical clay could be synthesized if they are added to PU and PAC resins. Also, the mechanical performances of fabric is globally increased versus the amount of clay for the two used resins. The maximum clay percentage to enhance the mechanical performance of a fabric is between 4 percent and 5 percent. As a matter of fact, the use of important amounts superior to 5 percent does not bring any better results.
Abstract: In this paper we report the morphological and mechanical characteristics of textile fabric coated with nanoclay composites. There has been an increasing consideration in nanotechnology during the present decade due to its enormous potential in applying and creating novel materials for enhanced properties and applications. Many studies were carried ...
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Polypropylene Biomaterial Grafted with Cyclodextrins and BTCA Acid as Crosslinking Agent
Chiraz Ammar,
Yassine El Ghoul,
Ahmida El Achari
Issue:
Volume 3, Issue 4-1, July 2015
Pages:
25-30
Received:
25 March 2015
Accepted:
25 March 2015
Published:
8 April 2015
DOI:
10.11648/j.nano.s.2015030401.15
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Abstract: This study describes the use of cyclodextrin (CDs) as a finishing agent of polypropylene biomaterial (PP) by means of 1,2,3,4-butanetetracarboxylic acid (BTCA) as crosslinking agent. Grafting happened by the formation of a crosslinked polymer formed between BTCA and CDs. This polymer physically adhered to the fibers network and was resistant to hot water washings. We study the influence of parameters involved in this specific textile processing. These parameters include the curing conditions (temperature, time) and also the nature of the reactants which are 1,2,3,4-butanetetracarboxylic acid (BTCA), citric acid (CTR) and polyacrylic acid (PAA), applied as crosslinking agents. Modified PP fibers were then characterized by evaluating the contact angle with a polar liquid and by studying the hysteresis of damping of PP fibers (Cahn balance) with various grafting rates. Infrared spectroscopy (ATR) and morphological (SEM) studies displayed the presence of the crosslinked CD polymer that coated the fibers, and permitted to evaluate the chemical heterogeneity of the grafted surfaces. A mechanical characterization of the PP fabrics grafted with various proportions of CDs was accomplished, by traction via a tensile-test. Finally a topographic study of PP grafted surfaces was approached by atomic force microscopy (AFM) which permitted to evaluate the roughness and the chemical heterogeneity of the grafted surfaces.
Abstract: This study describes the use of cyclodextrin (CDs) as a finishing agent of polypropylene biomaterial (PP) by means of 1,2,3,4-butanetetracarboxylic acid (BTCA) as crosslinking agent. Grafting happened by the formation of a crosslinked polymer formed between BTCA and CDs. This polymer physically adhered to the fibers network and was resistant to hot...
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