Various nano-silica particles affecting dyeability of poly(ethylene terephthalate)/silica nanocomposite films

Gashti, Mazeyar Parvinzadeh; Moradian, Siamak; Rashidi, Abosaeed; Yazdanshenas, Mohammad Esmail

doi:10.1007/s12221-013-0743-x

Cited by 26 publications

(9 citation statements)

References 71 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Another reason can be the increase in the micro‐Brownian motion of the polymeric chains due to the plasticizing effect by the hydrophobic nanoparticles 3 . The decrease in the modulus after application of the SNP in the polymer matrix has also been reported in other studies 18,41 . Furthermore, the storage modulus in the glassy region is higher for the SLPUF1 than the SLPUF0.5 and SLPUF0.1 samples, which is due to the stiffness of solid nanoparticles 45 …”

Section: Resultssupporting

confidence: 52%

“…These results indicated higher degradation stability for the SLPUF samples. SNP can act as physical crosslink points with a high melting point so that, they cause the heat insulation and limit the movement of long molecular chain in the PU 34,40,41 . Enhancement of thermal stability in the PUFs has also been reported following incorporation of the SNP 18,41 …”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of microstructure, thermal, and mechanical properties of the green lignin‐based polyurethane/hydrophobic silica nanocomposite foam

Mohammadpour

Sadeghi

2020

J of Applied Polymer Sci

View full text Add to dashboard Cite

In the present study, lignin‐based polyurethane foam (LPUF) and hydrophobic silica LPUF (SLPUF) were synthesized using different concentrations of silica nanoparticles (SNP). The effect of SNP on the structure and properties of SLPUF samples was investigated and compared with LPUF through the scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT‐IR), thermogravimetric analysis (TGA), dynamic mechanical thermal analysis (DMTA), and compressive tests. The FT‐IR results showed changes in the H bonding interactions between the structures of SLPUF samples. Moreover, the SEM results indicated a decrease in the cell size of SLPUF samples. Incorporation of SNP improved the thermal stability of SLPUF samples while the compressive strength of SLPUF samples decreased in comparison with LPUF. Furthermore, the DMTA results revealed a decrease in the glass transition temperature from 90°C (LPUF) to around 52°C (SLPUF samples). This means that applying the hydrophobic SNP changes the foam type from a rigid foam to soft one. Therefore, significant changes were observed in the physical–chemical properties of the SLPUF samples compared to the LPUF.

show abstract

Section: Resultssupporting

confidence: 52%

Section: Resultsmentioning

confidence: 99%

Evaluation of microstructure, thermal, and mechanical properties of the green lignin‐based polyurethane/hydrophobic silica nanocomposite foam

Mohammadpour

Sadeghi

2020

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…A good dispersion of layered silicates in PU elastomer nanocomposites has been found to improve mechanical properties, thermal stability, gas barrier properties and flame retardancy, etc. Although several studies have reported on the dyeing of clay or layered‐silicate nanocomposites of polypropylene , polyethylene terephthalate (PET) , polyamide 6 , polylactic acid (PLA) and PU , there is almost no literature reporting on the dyeing of PU/clay in filament form. Therefore, in the current study PU filaments have been modified by the incorporation of nanoclay to increase their dyeability with acid dye, basic dye and reactive dye.…”

Section: Introductionmentioning

confidence: 99%

Studies on the dyeability and dyeing mechanism of polyurethane/clay nanocomposite filaments with acid, basic and reactive dyes

Reddy

Joshi

Adak

et al. 2018

Coloration Technology

View full text Add to dashboard Cite

Polyurethane/clay nanocomposite (PUCN) filaments were spun by the dry‐jet‐wet spinning method. To prepare the PUCN filaments, 0.25, 0.50 and 1% of nanoclay on the weight of polyurethane were incorporated in the polyurethane dope. The interaction between clay and polyurethane was analysed by attenuated total reflectance–Fourier Transform‐infrared (ATR‐FTIR) spectroscopy. The structure and morphology of the PUCN filaments were analysed by wide‐angle X‐ray diffraction (WAXD) and transmission electron microscopy (TEM). Both the neat polyurethane and the PUCN filaments were dyed with different acid, basic and reactive dyes. The neat polyurethane filaments exhibited poor dyeability with all three classes of dyes. By contrast, the PUCN filaments showed a significantly higher dye uptake with all of the dyes used. Furthermore, the dye uptake increased significantly as the percentage of clay in the filaments increased, as indicated by the increase in the K/S values of the dyed filaments. The dyeing mechanism with all three dyes, as well as the increased dyeability of the PUNC filaments in comparison to those of the neat polyurethane filaments, was discussed.

show abstract

“…10 To eliminate the environmental impact, works have been done on dyeing cotton at a neutral pH condition 11−13 or by low add-on technology controlling the wet-pick up. 14 Novel methods, such as chemical grafting of the disperse dye onto polyacrylonitrile, 15 dyeing of nylon 6 with extracted natural dyes from waste leaves, 16 computational and experimental assessment on corona discharge surface ionization of poly(ethylene terephthalate) (PET), 17 and dyeing of PET with various nanosilica particles, 18 have also been investigated.…”

Section: Introductionmentioning

confidence: 99%

Reverse Micellar Dyeing of Cotton Fiber with Reactive Dyes: A Study of the Effect of Water pH and Hardness

Tang¹,

Lee²,

Wang³

et al. 2019

ACS Omega

View full text Add to dashboard Cite

Effects of hardness and the pH value of water in a water pool on PEG-based nonionic surfactant dyeing of cotton fiber with reactive dyes in a heptane reverse micelle system were investigated in terms of the color yield, reflectance, CIE L * a * b * value, and unlevelness. Results reveal that the effect of the water-pool pH value on the color yield and reflectance are more significant than the effect of hardness in the water pool. The dyed fabrics under an alkaline water-pool condition obtain a lower color yield and higher reflectance percentage than those under acidic and nearly neutral conditions. The increase of hardness in a water pool has higher influence on unlevelness of dyed samples than the increase or decrease of the pH value in a water pool. The changes in hardness and the pH value in a water pool did not result in a significant change in CIE L * a * b * values of dyed specimens, and no chromatic change was found in dyed fabrics. Excellent washing fastness results of the dyed fabrics, guaranteeing adequate removal of unfixed dyes, assure accuracy of the results in a spectrophotometric measurement.

show abstract

Various nano-silica particles affecting dyeability of poly(ethylene terephthalate)/silica nanocomposite films

Cited by 26 publications

References 71 publications

Evaluation of microstructure, thermal, and mechanical properties of the green lignin‐based polyurethane/hydrophobic silica nanocomposite foam

Evaluation of microstructure, thermal, and mechanical properties of the green lignin‐based polyurethane/hydrophobic silica nanocomposite foam

Studies on the dyeability and dyeing mechanism of polyurethane/clay nanocomposite filaments with acid, basic and reactive dyes

Reverse Micellar Dyeing of Cotton Fiber with Reactive Dyes: A Study of the Effect of Water pH and Hardness

Contact Info

Product

Resources

About