Abstract
Poly(ethyleneterephthalate) (PET) is a multi-purpose and widely used synthetic polymer in many industrial fields because of its remarkable advantages such as low cost, light weight, high toughness and resistance to chemicals, and high abrasion resistance. However, PET suffers from poor dyeability due to its non-polar nature, benzene ring structure as well as high crystallinity. In this study, PET fabrics were firstly treated with an alkaline solution to produce carboxylic acid functional groups on the surface of the PET fabric, and then was modified by polyelectrolyte polymer through the electrostatic layer-by-layer self-assembly technology. The polyelectrolyte multilayer-deposited PET fabric was characterized using scanning electron microscopy SEM, contact angle, Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS). The dyeability of PET fabrics before and after surface modification was systematically investigated. It showed that the dye-uptake of the polyelectrolyte multilayer-deposited PET fabric has been enhanced compared to that of the pristine PET fabric. In addition, its dyeability is strongly dependent on the surface property of the polyelectrolyte multilayer-deposited PET fabric and the properties of dyestuffs.
Highlights
As a main component of polyester, poly(ethyleneterephthalate) (PET) has been widely used in household, packaging, construction and textile industries because of its desirable properties such as low cost, light weight, high toughness, resistance to chemicals, and high abrasion resistance [1,2,3].In particular, PET ‘polyester’ fibers have gained growing attention in textile industry due to its numerous advantages including abundance of raw materials, lower cost as opposed to natural textiles and the possibility of recycling [4,5]
To the best of our knowledge, this is the first report related to the surface modification of PET fabrics using the LbL assembly approach and this study presents a systematic investigation of dyeability of LbL-modified PET fabrics to water soluble dyestuffs
We have successfully developed a facile approach to producing hydrophilic PET
Summary
PET ‘polyester’ fibers have gained growing attention in textile industry due to its numerous advantages including abundance of raw materials, lower cost as opposed to natural textiles and the possibility of recycling [4,5]. Dyeing PET with disperse dyes is usually carried out at high temperature (above 100 ◦ C) and high pressure, where dispersed dye particles in aqueous solution is transferred from bulk solution to the fiber surface, and diffused from the surface into the interior of the fiber. During this process, solvents and carriers are widely used as a means of accelerating
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