Unexpected hydrophobic to hydrophilic transition of PET fabric treated in a deep eutectic solvent of choline chloride and oxalic acid

Zhang, Yanyan; Ying, Lili; Wang, Zongqian; Wang, Yong; Xu, Qingbo; Li, Changlong

doi:10.1016/j.polymer.2021.124246

Cited by 22 publications

(17 citation statements)

References 37 publications

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“…The superhydrophobic PET@HD@FD fabrics were prepared by sequentially dip-coating and curing PET fabrics in the SiO 2 @HD-POS and SiO 2 @FD-POS emulsions ( Figure 1 A). Once immersed in the acidic SiO 2 @HD-POS emulsion, the -OH groups on the surface of the PET microfibers could adsorb SiO 2 @HD-POS ( Rahman Bhuiyan et al., 2018 ; Tian et al., 2020 ; Zhang et al., 2021 ). The bonding between PET and SiO 2 @HD-POS was enhanced by curing at 140°C ( Hong et al., 2016 ; Kehrle et al., 2018 ).…”

Section: Resultsmentioning

confidence: 99%

Super pressure-resistant superhydrophobic fabrics with real self-cleaning performance

Tian

Chen

et al. 2022

iScience

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Section: Resultsmentioning

confidence: 99%

Super pressure-resistant superhydrophobic fabrics with real self-cleaning performance

Tian

Chen

et al. 2022

iScience

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“…Deep eutectic solvents (DESs) are a family of environmentally friendly solvents proposed by Abbott et al in 2003 . Such materials are composed of an ionic compound such as a quaternary ammonium salt and a molecular compound such as a polyol, which can replace traditional organic solvents and ionic liquids. − To date, DESs have gradually become an important choice in polymer solution processing and have been widely used in electrodeposition, extraction separation, catalytic reactions, nanomaterial preparation, and many other fields. , In terms of chemical fiber surface modification, our previous work confirmed that DESs have a dissolution etching effect on the surface of the polyester fiber, forming a super hydrophilic surface …”

Section: Introductionmentioning

confidence: 87%

“…The ChCl/ OA DES solvent was employed to carry out the surface reconstruction of the PLA filament, which was proven to have contributions to the hydrophilic wettability of polyethylene terephthalate (PET). 33 The preparation process diagram of the DES is illustrated in Figure 1a. The DES solvent with a transparent character was composed of ChCl and OA in a molar ratio of 1:1 and was fabricated by facile heating and churning.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…31,32 In terms of chemical fiber surface modification, our previous work confirmed that DESs have a dissolution etching effect on the surface of the polyester fiber, forming a super hydrophilic surface. 33 In this work, a novel surface reconstruction strategy employing a green ChCl/OA DES was demonstrated to improve the dyeing performances of a PLA filament. The DESmodified PLA filament (DES−PLA) was first fabricated.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The ChCl/OA DES was prepared according to our previous study. 33 In detail, to an Erlenmeyer flask were added ChCl and OA with a molar ratio of 1:1, and the mixture was stirred at 100 °C by a constant-temperature magnetic agitator. The solution was continuously stirred for 0.…”

Section: ■ Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Surface Reconstruction and Low-Temperature Dyeing Performances of a Poly(Lactic Acid) Filament Pretreated with a Choline Chloride and Oxalic Acid Deep Eutectic Solvent

Ying

Zhao

et al. 2022

Macromolecules

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Poly(lactic acid) (PLA) is considered the best candidate biobased material alternative to petroleum-based polyethylene terephthalate due to its renewability and biodegradability. However, the crucial dyeing issue of PLA filament limits its applications in the textile industry. Herein, a green deep eutectic solvent (DES) consisting of choline chloride and oxalic acid was employed for the surface reconstruction of the PLA filament. Owing to the synergistic contribution effect of physical etching and chemical modification from the DES, the surface roughness and chemical activity of the PLA filament improved significantly, thereby conferring potent low-temperature dyeing performances. The DESmodified PLA filament can achieve K/S value and dye uptake at 90 °C commensurate to those of the PLA filament at 110 °C with no decay on the dry and wet rubbing fastness. This work demonstrates a promising approach for the low-temperature dyeing of PLA filaments, enabling the practical applications of PLA filaments.

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Single‐catalyst reactions from depolymerization to repolymerization: Transformation of polyethylene terephthalate to polyisocyanurate foam with deep eutectic solvents

Lee

Jung

2022

J of Applied Polymer Sci

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Polyisocyanurate (PIR) has been used as a flame retardant insulation material because of its improved thermal insulation and flame-retarding effects due to its cyclic structure with an isocyanate trimer group. When a deep eutectic solvent (DES) is used as a catalyst, PET glycolysis produces bis(2-hydroxyethyl terephthalate) (BHET) and its derivatives. These recycled polyols react with isocyanate to form PIR foam (PIRF) in the presence of a physical blowing agent. DES-based glycolysis is a low-energy process with a relatively low temperature and short reaction time. In this study, a potassium-based DES system was applied for the sequential depolymerization and repolymerization of waste PET into PIRFs. Potassium-based DESs were used as hydrogen bond acceptors (HBAs), and ethylene glycol (EG), glycerol, and urea were used as hydrogen bond donors (HBDs). The PIRF was obtained through one-pot depolymerization and repolymerization with a single-catalyst DES system. All DES catalyst systems effectively decomposed PET; the PET conversion efficiency reached 95% after 2 h reaction. The recycled PIR was more thermally stable (approximately 26.9% limiting oxygen index (LOI) and approximately 68.8 W/g heat release rate (HRR)). This paper presents an environmentally friendly and robust upcycling process for the transformation of waste PET into PIRF.

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Unexpected hydrophobic to hydrophilic transition of PET fabric treated in a deep eutectic solvent of choline chloride and oxalic acid

Cited by 22 publications

References 37 publications

Super pressure-resistant superhydrophobic fabrics with real self-cleaning performance

Super pressure-resistant superhydrophobic fabrics with real self-cleaning performance

Surface Reconstruction and Low-Temperature Dyeing Performances of a Poly(Lactic Acid) Filament Pretreated with a Choline Chloride and Oxalic Acid Deep Eutectic Solvent

Single‐catalyst reactions from depolymerization to repolymerization: Transformation of polyethylene terephthalate to polyisocyanurate foam with deep eutectic solvents

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