PHOSPHORUS (P) IN FUNCTIONAL TEXTILESPHOSPHORUS (P) IN FUNCTIONAL TEXTILESN. HATAMLEH, M. PUELLES, A. ILGISONIS, M. PERALTA, M. BORINSKY

National Institute of Industrial Technology (INTI), chemical Center, Av. Gral. Paz 5445, B1650WABSan Martín, Buenos Aires, Argentina

hatamleh@inti.gob.ar

Today’s era is the one of modernization of the textile industry. Every sector of textile and every field related to textiles is developing with the advancements taking place. Smart textiles or functional textiles are one such field. Protective textiles refer to those textile products which have a functionality of giving protection from something in some or the other sense. These can be mosquito repelling or may be insect repelling and also may be anti bacterial and anti fungal. These may also be heat and cold resistant or with any other property. Fabrics treatments with β-Cyclodextrins (β-CD) have been studied for different applications as nanotechnologycal approaches to achieve functional textiles. Cyclodextrins are cyclic oligosaccharides which can form complexes with host molecules, acting as reservoir of functional agents. For example, if a mosquito repellent forms a complex with β-CD molecules, it could be gradually released, prolonging its effect and offering the possibility of reloading the β-CD once the repellent is released. So far, fabrics are immersed in an aqueous solution containing β-CD, citric acid (CA) and sodium hypophosphite (SHPI), and the evaluation of the total amount impregnated in the cotton weaves is done by gain in mass. However, the amount of β-CD bonded to the fabric is unknown. The objective of this work was to determine if the phosphorus (from SHPI) is retained due to the fabric treatment done, and if so, relates the amount of β-CD bound to the fabric with the phosphorus content.

ICP-OES Spectrometry has shown a successfully technique in the analysis of phosphorus in functional textiles.

Results for the axial and radial configuration were evaluated. The axial view gives lower detection limits and widest linear dynamic range.

It was chosen the wavelength with less spectral and chemical interference and higher sensitivity.

For the emission line selected it was obtained very good linearity in the analyzed range. Correlation coefficients for calibration curves were bigger than 0.9999.

It was obtained good precision and accuracy. These values are acceptable for the purpose.

Perkin-Elmer Optima 7300DV Optical Emission Spectrometer. Axial View, Nebulizer: Gem Type Cross-Flow, Spray Chamber: Scott-Type, 3 Replicates

Chem-Lab Monoelement Standard Solutions Plasma (HIQU) for calibration curve. Sample treatment: The cotton weaves were cut tiny and thoroughly mixed to improve sample

homogeneity. Then these tiny pieces were dried and a portion was digested completely to solution with H2SO4 (c), H2O2 30% and heating.

Matrix matching: calibration curves were made with monoelement standard solution with the same acid and hydrogen peroxide concentration than the samples.

Instrumental parameters were optimized. We chose the wavelenght 213.617 nm for having lower spectral interferences and increased sensitivity.

The precision and accuracy of the method was evaluated by adding an known amount of P.

Element Wavelength (nm) LOD (ppm) LOQCalibration Curve (ppm)

P213.617

(Atomic Line)0.03

0.1 ppm (en curva)0.005 % (en muestra)

2 –10

Sample Quantity of SHPI (g / 100 g) Quantity of P (g / 100 g) P measure (g / 100 g)

1 1.5 0.5 0.084

2 1.9 0.6 0.072

3 2.6 0.9 0.101

4 3.0 1.0 0.156

ConclusionsConclusions

ReferencesReferences

IntroductionIntroduction

ResultsResults

ExperimentalExperimental

[1] “Controlled release of mosquito repellents by cyclodextrins treated textiles”. Authors: Miró Specos, Zannoni, Topollan, Arata, Vivod, Garcia, Gutierrez, Voncina and Hermida. The International Istanbul Textile Congress 2013. Istanbul, Turkey.[2] “Citriodiol inclusion in β-Cyclodestrin treated polyester for mosquito repellent nets”. Authors: Topollan, Miró Specos, Arata, Zannoni and Hermida. 14th AUTEX World Textile Conference, Bursa, Turkey.[3] “Applications of maleic acid and sodium hypophosphite as durable press finishing agents for cotton”. Authors: Yang and Peng. AUTEX 2011 Conference. Mulhouse, France.[4] “Practical Inductively Coupled Plasma Spectroscopy”. J. R. Dean. England, 2005.[5] “Concepts, Instrumentation and techniques in Inductively Coupled Plasma Optical Emission Spectrometry”. C.B. Boss and K.J. Fredeen. Third Edition (USA, 2004).

Fig. 1: Cotton

WeavesFig. 1: Cotton

Weaves

Fig. 2: Cotton

Weaves

cut tiny

Table 1: Comparison of the quantity of SHPI (and the P equivalence) that contain the aqueous solution where the fabrics were immersed with the P retained due to the fabric treatment done.

Sample4

Nominal P (g / 100 g) P added (g / 100 g) Total P (g / 100 g)

I 0.165

0.1

0.253

II 0.154 0.251

III 0.149 0.253

IV 0.156 0.255

V 0.158 0.254

Average 0.156 0.253

SD 0.006 0.001

% RSD 3.7 0.6

% R 97

Table 2: Evaluation of the precision and accuracy of the method by adding an known amount of P.

AcknowledgmentAcknowledgment

We thank Lic. Valeria Zannoni and Dra. Laura Hermida from the Controlled Release System Laboratory (SLC), Chemical Center of the National Institute of Industrial Technology (INTI).

Fig. 3: Calibration Curve

Fig. 4: Perkin-Elmer Optima 7300DV

Optical Emission Spectrometer