Article

Surface modification of polyester nonwoven fabrics by Al2O3 sol–gel coating

Journal of Coatings Technology and Research (Impact Factor: 1.28). 12/2009; 6(4):537-541. DOI: 10.1007/s11998-008-9157-x

ABSTRACT Nonwoven polyester (PET) fabrics have been extensively studied for various applications. However, the nonwoven PET fabrics
have poor wettability. In this work, nonwoven PET fabrics were impregnated in a stable and transparent alumina sol that was
prepared by the hydrolysis of aluminium isopropoxide using the sol–gel technique. The Al2O3 particles were coated on nonwoven PET fabrics after the rolling-drying process. The surface morphology of modified nonwoven
PET fabrics was characterized by scanning electronic microscopy (SEM) and atomic force microscopy (AFM). The SEM and AFM observations
revealed the formation of the Al2O3 particles on the fiber surface. The Al2O3 coating was also confirmed by Fourier transform infrared (FTIR). The mechanical properties of the coated nonwoven PET fabrics
were investigated using a tensile strength test, and the results showed that the mechanical properties were improved after
surface sol–gel coating. The effect of Al2O3 on the wetting behavior of the fabric was also significantly improved.

1 Follower
 · 
274 Views
  • Journal of the Textile Institute 12/2014; DOI:10.1080/00405000.2014.937559 · 0.77 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Carboxymethyl chitosan (CMCS) was prepared with a view to develop a multifunctional finish on saponified polyethylene terephthalate (PET) fabric. CMCS was synthesized by chemical reaction with chloroacetic acid, and its chemical structure was characterized by Fourier Transform Infrared Spectrum (FTIR) and nuclear magnetic resonance (NMR). CMCS was grafted on saponified PET fabric using 3-(3-dimethylaminopropyl)-1-ethylcarbodiimide hydrochloride (EDC)/N-hydroxysuccinimide (NHS) and polyethylenimine (PEI)/glutaraldehyde (GA) as cross-linking agent. FTIR, scanning electron microscope (SEM) and energy dispersive X-ray (EDX) analyses confirmed CMCS grafting on saponified PET fabric surface. TGA indicated saponification and CMCS grafting did not affect thermal property of PET fabric. The CMCS grafting greatly improved wettability, antistatic property of saponified PET fabric without harmful effect on their physico-mechanical properties.
    Carbohydrate Polymers 11/2014; 113:344–352. DOI:10.1016/j.carbpol.2014.06.088 · 3.92 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Al(OH)3 thin films were assembled on anionic polysulfonamide (PSA) fabrics by electrostatic self-assembly method to improve the mechanical, heat insulation, and flame retardant properties of PSA fabrics. PSA fabric surface was modified with a chemical reaction to build-up anionic charge known as anionization. Then a homogeneous Al(OH)3 film was deposited in the fiber interstices after the treatment of Al(OH)3 nanoparticles by electrostatic self-assemblies. The scanning electron microscopy (SEM) and X-ray powder diffraction (XRPD) were used to verify the presence of deposited Al(OH)3 thin films. Tensile strength, heat insulation, and flame retardancy of PSA fabrics were analyzed before and after the treatment of Al(OH)3 thin films. It was proved that the heat insulation and flame retardancy of PSA fabrics could be improved by Al(OH)3 films additive through electrostatic self-assembly process.
    Industrial & Engineering Chemistry Research 03/2013; 52(10):3607–3612. DOI:10.1021/ie302441r · 2.24 Impact Factor

Full-text (2 Sources)

Download
139 Downloads
Available from
Jun 2, 2014