Modification of PA/PU superfine non-woven fiber for “breath” property using collagen and vegetable tannins

Xu, Na; Wang, Xuechuan; Wang, Lezhi; Zheng, Yonggui; Zhang, Fengjie; Guo, Peng

doi:10.1177/1528083718808786

Cited by 6 publications

(3 citation statements)

References 26 publications

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“…The adsorption method is given priority due to its low cost, easy operation and fast response, which is widely regarded as an effective choice for treating OSs-bearing wastewater (Benally et al 2019;Li et al 2019b;Wu et al 2017). Moreover, the traditional adsorption materials, such as activated carbon (Piai et al 2019), sugar cane bagasse (Tahir et al 2016), vegetable fibers (Xu et al 2019), sawdust bed (Gao et al 2018;Khasri and Ahmad 2018), vermiculite (Akemoto et al 2021;Moraes et al 2019), etc. have been put in practical use already.…”

Section: Introductionmentioning

confidence: 99%

Bamboo charcoal fused with polyurethane foam for efficiently removing organic solvents from wastewater: experimental and simulation

Wang

Zhao

et al. 2022

Biochar

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The development of a multifunctional oil adsorbing material which could effectively and quickly separate oily wastewater is one of the focuses in water environment restoration. In this study, bamboo charcoal (BC) was used as an improver to modify polyurethane (PU) foam. The results of scanning electron microscope (SEM) and Fourier-transform infrared spectroscopy (FTIR) revealed that the addition of BC could effectively improve the mechanical properties of PU. The adsorption data exhibited that the BC-loaded PU (BC/PU) foam composites effectively removed seven organic solvents (OSs, including octane, petroleum ether, soybean oil, chlorobenzene, 1,2-dichloroethane, n-hexane, cyclohexane), and the maximum adsorption capacity of BC/PU was 23.6 g g−1 when BC content was 5%. The order of pseudo-second-order kinetic constants and maximum adsorption capacity of seven OSs was octane < petroleum ether < soybean oil < chlorobenzene < 1, 2-dichloroethane < cyclohexane < n-hexane. Based on the experimental data and density functional theory (DFT) simulation, the adsorption mechanism of OSs on BC/PU-5 was discussed. The EHOMO and μ of OSs calculated by DFT were highly correlated with absorption affinity (K2, Qe and Qmax). Hence, the contribution of OSs to the adsorption efficiency of BC/PU-5 may be mainly due to electron donor–acceptor (EDA) interaction and non-hydrophobic interaction. In addition, the adsorption capacity did not change significantly after repeated recycling 5 times. Overall, the prepared BC/PU foam composites could be used as a potential candidate for separating OSs in engineering applications. Graphical Abstract

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Section: Introductionmentioning

confidence: 99%

Bamboo charcoal fused with polyurethane foam for efficiently removing organic solvents from wastewater: experimental and simulation

Wang

Zhao

et al. 2022

Biochar

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“…The sample moisture absorption was characterized based on the liquid wicking rate (LWR). 34 A sample was suspended vertically and then immersed in water until the sample bottom reached a water depth of 15 mm. Finally, the time taken for the liquid level to rise by a height of 30 mm was recorded.…”

Section: Sulfhydrylation Of Polyamide Fiber Nonwoven Materialmentioning

confidence: 99%

Construction of Collagen Methacrylamide Microspheres to Modify Nonwoven Polyamide Fibers Based on Click Chemistry

Xu¹,

Xing²,

Wang³

2021

ACS Appl. Polym. Mater.

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Using waste leather collagen, collagen microspheres with “–CHCH2” (CMAs) were prepared using the emulsification cross-linking method and then incorporated into a nonwoven polyamide fiber material with the “thiol–ene” click chemistry method to obtain modified nonwoven polyamide fibers (PA-CMAs). Experiments showed that for a CMA concentration of 6 wt %, initiator concentration of 0.008 wt %, and irradiation time of 5 h, the grafting rate can reach 25.83%. Scanning electron microscope (SEM) and X-ray photoelectron spectrometer (XPS) are used to confirm the successful grafting of CMAs onto nonwoven PA materials. The stability and fastness test was used to show that PA-CMAs have good stability with acid, alkali, organic solvent resistance, and rubbing resistance. The contrast test indicated that the moisture absorption and permeability of PA-CMAs were better than those of nonwoven polyamide/polyurethane (PA/PU), which is a synthetic leather-based material considered as one of the mainstream products. In addition, PA-CMAs maintained the original softness and elastoplasticity of PA.

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“…It has many properties and advantages of natural leather and is superior to natural leather in terms of mechanical strength, chemical resistance, homogeneity of quality, and adaptability to automated cutting and processing. However, compared to natural leather, its moisture absorption and permeability properties are poor and stifling to wear, so its moisture absorption and permeability properties need to be improved. − When analyzed structurally, the hydrophilic groups on the polyamide (PA) fibers and polyurethane filler in the base material are few and cannot match the number of hydrophilic groups on the collagen fibers in natural leather, which is one of the main reasons for the poor moisture absorption and permeability of the microfiber synthetic leather.…”

Section: Introductionmentioning

confidence: 99%

Construction of a Novel Substrate of Unfigured Islands-in-Sea Microfiber Synthetic Leather Based on Waste Collagen

Tao

Wang

et al. 2021

ACS Omega

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This study is to introduce waste collagen into an unfigured islands-in-sea microfiber nonwoven material, replacing the polyurethane impregnation section of the traditional manufacturing process with the collagen impregnation process. The modified collagen was first impregnated in polyamide/lowdensity polyethylene (PA/LDPE) fiber nonwoven to form a film. Then the low-density polyethylene component was extracted and dissolved in toluene, resulting in a collagen-based microfiber nonwoven substrate. Waste collagen was first modified to introduce CC into the molecular chain to obtain vinyl collagen (CMA), and then the following film formation conditions for CMA were studied: 73% degree of substitution (DS), 3 h cross-linking time, and 0.005−0.01 wt % initiator concentration. Then, the preparation of CMA-PA/LDPE and toluene extraction processes were investigated. The optimum toluene extraction conditions were obtained as an extraction temperature of 85 °C and an extraction time of 110 min. The properties of the nonwoven materials were compared before (CMA-PA/LDPE) and after (PA-CMA) extraction. It was found that the homogeneity, tensile strength, and static moisture permeability of the PA-CMA materials prepared by CMA with 50 and 73% DS were all superior to those of PA/ LDPE. In particular, the static moisture permeability of PA-CMA (691.6 mg/10 cm 2 •24 h) increased by 36.2% compared to the microfiber synthetic leather substrate currently in the market. Using scanning electron microscopy (SEM), the continuity of a film of PA-CMA with 73% DS was observed to be better and the fibers were differentiated and relatively tighter fiber-to-fiber gap. The studied novel green process can eliminate the large amount of dimethylformamide (DMF) pollution caused by the current solventbased polyurethane impregnation process.

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Modification of PA/PU superfine non-woven fiber for “breath” property using collagen and vegetable tannins

Cited by 6 publications

References 26 publications

Bamboo charcoal fused with polyurethane foam for efficiently removing organic solvents from wastewater: experimental and simulation

Bamboo charcoal fused with polyurethane foam for efficiently removing organic solvents from wastewater: experimental and simulation

Construction of Collagen Methacrylamide Microspheres to Modify Nonwoven Polyamide Fibers Based on Click Chemistry

Construction of a Novel Substrate of Unfigured Islands-in-Sea Microfiber Synthetic Leather Based on Waste Collagen

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