Tailor-made zwitterionic polyurethane coatings: microstructure, mechanical property and their antimicrobial performance

Wang, Chunhua; Ma, Chunfeng; Mu, Changdao; Lin, Wei

doi:10.1039/c7ra04379a

Cited by 53 publications

(25 citation statements)

References 35 publications

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“…As shown in Fig. 2, the vibration peak of hydroxyl groups from HPQS disappears, and the vibration peak of N − H group at 3315 cm − 1 along with the vibration peak of C=O group at 1725 cm − 1 of polyurethane [25] occurs in FT-IR spectrum of WPU-20, demonstrating the incorporation of QPS into WPU. Moreover, the occurrence of new peaks observed in the spectrum of WPU-20, i.e.…”

Section: Resultsmentioning

confidence: 90%

A facile preparation of a novel non-leaching antimicrobial waterborne polyurethane leather coating functionalized by quaternary phosphonium salt

Wang

et al. 2020

J Leather Sci Eng

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The aim of this research is to develop a novel non-leaching antimicrobial waterborne polyurethane (WPU) leather coating material with covalently attached quaternary phosphonium salt (QPS). The structure of the QPS-bearing WPU has been identified, and their thermal stability, mechanical property, and antimicrobial performance have been investigated. The results reveal that the incorporation of QPS slightly reduces the thermal stability of WPU material but would not affects its usability as leather coating. Despite the presence of hydrophobic benzene in QPS structure, the strong hydration of its cationic groups leads to the increased surface contact angle (SCA) and water absorption rate (WAR) of the films, suggesting that the water resistance of the films needs to be improved for the purpose of leather coatings. Antibacterial tests demonstrate that when the QPS content is 20 wt%, QPS-bearing WPU shows effective antimicrobial activity against bacteria. The WPU containing QPS prepared in this study is a non-leaching antimicrobial material and has great potential application as leather coating.

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Section: Resultsmentioning

confidence: 90%

A facile preparation of a novel non-leaching antimicrobial waterborne polyurethane leather coating functionalized by quaternary phosphonium salt

Wang

et al. 2020

J Leather Sci Eng

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“…Additionally, all the nanocomposites with different amounts of MSiO 2 show a diffraction peak at about 20 • as a result of the presence of small crystalline structures and partial ordered arrangement of PU chain segments. Flexible and linear polyether chains of PEG and the symmetric structure of HMDI can be resulted in crystalline structures [39][40][41]. The peak intensity of nanocomposites is lower in comparison with CPUA and it decreases with increasing MSiO 2 content, which confirms the existence of a strong interaction among PUA and MSiO 2 in the cured nanocomposites [42].…”

Section: Resultsmentioning

confidence: 99%

Preparation of polyurethane-acrylate and silica nanoparticle hybrid composites by a free radical network formation method

2019

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In this study, hybrid composites of polyurethane-acrylate (PUA) and silica nanoparticle were prepared by a radical method. For this aim, silica nanoparticles were chemically functionalized with 3-methacryloxypropyltrimethoxysilane. Polyurethane was synthesized and then modified with 2-hydroxyethyl methacrylate to yield PUA. Then, different amounts of modified-silica were used to prepare PUA composites by the addition of an ethylene glycol dimethacrylate crosslinker. Fourier-transform infrared spectroscopy confirmed the successful functionalization of silica nanoparticles and the preparation of PUA. Structural investigation of the functionalized-nanoparticles and also nanocomposites was carried out using X-ray diffraction and electron microscopy. According to the thermal gravimetric analysis results, char residue of HSiO 2 is 86.6%, which decreases to 81.3% in the case of MSiO 2 as a result of its modifier degradation content of 5.3%. PUAS5 shows main decomposition temperatures of 396.5 and 454.9 • C and also char content of 5.7% at 700 • C. The high amount of MSiO 2 can also be resulted in higher degree of crosslinking and therefore higher thermal stabilities and char residue.

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“…Furthermore, the reactants of PMDA, PEG, and HMDI are crystallizable because of aromatic rings, flexible and linear polyether chain, and also symmetric structure, respectively. Therefore, they can cause formation of short range crystalline domains in amorphous phase of PU hybrid network .…”

Section: Resultsmentioning

confidence: 99%

Preparation of carbon nanotube and polyurethane‐imide hybrid composites by sol–gel reaction

2018

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Polyurethane (PU) and carbon nanotube (CNT) hybrid composites with improved thermal stability were prepared by sol–gel reaction. Here, pyromellitic dianhydride (PMDA) and butanediol (BD) were used as two different chain extenders and the products were end‐functionalized with (3‐aminopropyl) triethoxysilane (APTES) to obtain PUI and PUBD, respectively. By incorporation of 3‐(trimethoxysilyl)propyl methacrylate (MPS)‐functionalized CNT and PU samples into the silica/siloxane network, two different hybrid composites were obtained and compared in degradation temperature and char residues. Fourier‐transform infrared (FT‐IR) spectroscopy and thermogravimetric analysis (TGA) confirmed successful modification of CNT with MPS. Absence of FT‐IR band of isocyanate groups confirms successful reaction of APTES with isocyanate groups in both PUBD and PUI. According to TGA results, the PUI hybrid composites with 4 wt% of CNTS showed char contents of 22.5%. Addition of 4 wt% of CNTS into the PUBD hybrid resulted in char residue of 21.2%. Therefore, the hybrid composites formed from PMDA showed higher degradation temperature and char residues. X‐ray diffraction showed an amorphous peak for crosslinked PU at near 2θ = 21.7°. The tubular structure of CNTS was confirmed by scanning and transmission electron microscopies. POLYM. COMPOS., 40:E1903–E1909, 2019. © 2018 Society of Plastics Engineers

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Tailor-made zwitterionic polyurethane coatings: microstructure, mechanical property and their antimicrobial performance

Abstract: Introduction of zwitterions into polyurethane markedly increases micro-phase separation and tensile property, and endow the surfaces with anti-mold adhesion performance.

Cited by 53 publications

References 35 publications

A facile preparation of a novel non-leaching antimicrobial waterborne polyurethane leather coating functionalized by quaternary phosphonium salt

A facile preparation of a novel non-leaching antimicrobial waterborne polyurethane leather coating functionalized by quaternary phosphonium salt

Preparation of polyurethane-acrylate and silica nanoparticle hybrid composites by a free radical network formation method

Preparation of carbon nanotube and polyurethane‐imide hybrid composites by sol–gel reaction

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