Facile preparation of super-hydrophilic poly(ethylene terephthalate) fabric using dilute sulfuric acid under microwave irradiation

Layer-by-Layer Assembly of Polyelectrolyte Multilayer onto PET Fabric for Highly Tunable Dyeing with Water Soluble Dyestuffs

“…It can be seen that the relative intensity of C=O band at 1714 cm −1 increased slightly for the PE multilayer-deposited PET fabrics, which possibly came from the –C=O stretching of dissociated carboxyl groups as a result of the PAA deposition onto PET fabrics. In addition, a peak at 1411 cm −1 was one of several assigned to an aromatic C–C stretching and –CH in-plane bending, a peak at 1097 cm −1 was assigned to C–O trans-vibration, and peaks at 1016 cm −1 and 875 cm −1 were assigned to aromatic =C–O bending and aromatic –CH in-plane bending, respectively [ 33 ].…”

Reactive Polymer-Functionalized Aligned Multiwalled Carbon Nanotube Bundles-Induced Porous Poly(ethylene terephthalate) Fibers

“…Figure shows the FTIR spectra of PET fibers with ACNTB and RP@ACNTB. PET fibers with and without ACNTB display the stretching vibration absorption peaks of −OH in adsorbed bound water, residual diethylene glycol, or carboxylic end groups at 3400–3700 cm –1 , CO at 1721 cm –1 , C–O–C at 1248 and 1090 cm –1 , C–O in primary alcohol at 1018 cm –1 , benzene ring at 1500 and 1450 cm –1 , and C–H at 2972 cm –1 . ,,− For PET/RP@ACNTB fibers, the FTIR spectrum not only shows all characteristic absorption peak of PET but also displays the stretching vibration absorption peaks of −NH 2 – and −NH– at 3260–3350 cm –1 and −CO–NH– at 1637 cm –1 , which indicate that function groups such as −NH–, −NH 2 –, and −CO–NH– have been introduced to PET fiber. It must be mentioned that PET contains a small number of compounds containing −OH or −COOH, which may react with −OCN/epoxy groups in RP@ACNTB during the spinning process of PET fiber (Figure S4).…”

“…Many efforts have been made to improve PET’s performance or develop new functions. For example, to enhance the hydrophilicity of PET fibers, hydrophilic groups such as −COOH, −OH, and −NH 2 have been introduced to the surfaces of PET fibers using enzymatic modification, electron beam grafting, laser treatment, annealing, and acidification, − but these methods may destroy the molecular structure of PET, resulting in the decrease of physical property. To improve the thermal stability of PET fibers, high heat-resistant fillers such as organo-modified clay, carbon nano tube (CNT), fumed silica, calcium carbonate, calcium silicate, and magnesium hydroxide have been added, − but investigation shows that in most cases, a poor interfacial interaction between PET matrix and filler appears, limiting the effective improvement in thermal properties of PET fibers.…”

An Effective Surface Modification of Polyester Fabrics for Improving the Interfacial Deposition of Polypyrrole Layer

“…It showed that the major structure of fibers was undamaged when original PET fabrics were modified with dilute H2SO4 and deposited with PPy layer. This was because only a small amount of H2SO4 was left in PET fibers during the modification process [30]. Fig.9 The X-ray diffraction patterns of the original, modified, PPy-deposited PET samples.…”