Modification of chitosan-Fe3O4microspheres with isophorone diisocyanate and formation of polyurethane/mchitosan-Fe3O4antimicrobial polymer

Song, Mengmeng; Xie, Jingang; Fu, Heqing

doi:10.1080/00914037.2017.1376197

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…However, the shape of the nanocomposite film did not change (Figure D). This was because x Fe 3 O 4 –2 x Al(OH) 3 with amino functionalization provided a large number of crosslinking nodes to make the polyurethane film more dense . On the other hand, it was also because of the well‐known advantages of ATH, such as flame retardant, smoke suppression, and no drips.…”

Section: Resultsmentioning

confidence: 99%

Bisphosphoric modified amino functional [xFe₃O₄–2xAl(OH)₃]/waterborne polyurethane nanocomposite with superparamagnetism and flame retardancy

Yang

2019

Polymers for Advanced Techs

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Based on the strong adsorption of the diphosphate group to Fe and Al ions, first, the Fe 3 O 4 and Al (OH) 3 nanoparticles were modified by alendronate sodium (ALN), and organic phosphorus coated nanoparticles (Fe 3 O 4 -ALN and Al (OH) 3 -ALN) with the active group ─NH 2 were prepared. Novel [xFe 3 O 4 -2xAl(OH) 3 ]/waterborne polyurethane nanocomposite with superparamagnetism and excellent flame retardancy were prepared by in situ polymerization. The experimental results showed that when the content of Fe 3 O 4 -ALN increased, the M s increased. And the saturation magnetization reached 14.35 emu/g when the Fe 3 O 4 -ALN content was 10 wt%. The nanoparticle network formed by Fe 3 O 4 and Al (OH) 3 can prevent the melting deformation of waterborne polyurethane (WPU) composite film and reduce the burning area. And the dual physical protective layer formed by nanoparticle network and char layer can prevent the combustible gas contacting with oxygen and giving off combustion heat, which effectively reduced the heat and smoke gas release. When the content of xFe 3 O 4 -2xAl(OH) 3 was 20 wt%, the oxygen index of the composite was 28.4%, and the flame retardancy of nanocomposite was classified as V-0 rating in the UL-94 test. KEYWORDS flame retardancy, magnetic properties, waterborne polyurethane, xFe 3 O 4 -2xAl(OH) 3

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Section: Resultsmentioning

confidence: 99%

Bisphosphoric modified amino functional [xFe₃O₄–2xAl(OH)₃]/waterborne polyurethane nanocomposite with superparamagnetism and flame retardancy

Yang

2019

Polymers for Advanced Techs

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Preparation of novel hydrophobic magnetic Fe₃O₄/waterborne polyurethane nanocomposites

Yang

2019

J of Applied Polymer Sci

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Magnetic Fe3O4/waterborne polyurethane nanocomposites were synthesized based on waterborne polyurethane (WPU) and amino‐functionalized Fe3O4 by in situ polymerization. The Fe3O4 nanoparticle was found to be uniformly distributed in Fe3O4/WPU nanocomposites with linear or crosslinked structure. In addition, the formation mechanism and magnetic conduction mechanism of stable inorganic–organic nanocomposites were discussed. The experimental results showed that the thermal stability, magnetic, and mechanical properties of magnetic Fe3O4/waterborne polyurethane nanocomposites were improved by amino functionalized Fe3O4. Furthermore, the defoaming property of the emulsion and the hydrophobic property of magnetic Fe3O4/waterborne polyurethane nanocomposites were improved by the 1‐hexadecanol‐terminated prepolymer. What more, polycaprolactone (PCL)‐based Fe3O4/WPU nanocomposites have excellent mechanical properties (The tensile strength is over 30 MPa, the elongation rate is above 300%.) and magnetic properties. Magnetic Fe3O4/waterborne polyurethane nanocomposites will be used in the field of hydrophobic and microwave absorbent materials. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48546.

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Tough and stretchable Fe3O4/MoS2/PAni composite hydrogels with conductive and magnetic properties

Zhong

Yang

et al. 2020

Composites Part B: Engineering

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Modification of chitosan-Fe₃O₄microspheres with isophorone diisocyanate and formation of polyurethane/mchitosan-Fe₃O₄antimicrobial polymer

Cited by 3 publications

References 21 publications

Bisphosphoric modified amino functional [xFe₃O₄–2xAl(OH)₃]/waterborne polyurethane nanocomposite with superparamagnetism and flame retardancy

Bisphosphoric modified amino functional [xFe₃O₄–2xAl(OH)₃]/waterborne polyurethane nanocomposite with superparamagnetism and flame retardancy

Preparation of novel hydrophobic magnetic Fe₃O₄/waterborne polyurethane nanocomposites

Tough and stretchable Fe3O4/MoS2/PAni composite hydrogels with conductive and magnetic properties

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Modification of chitosan-Fe3O4microspheres with isophorone diisocyanate and formation of polyurethane/mchitosan-Fe3O4antimicrobial polymer

Cited by 3 publications

References 21 publications

Bisphosphoric modified amino functional [xFe3O4–2xAl(OH)3]/waterborne polyurethane nanocomposite with superparamagnetism and flame retardancy

Bisphosphoric modified amino functional [xFe3O4–2xAl(OH)3]/waterborne polyurethane nanocomposite with superparamagnetism and flame retardancy

Preparation of novel hydrophobic magnetic Fe3O4/waterborne polyurethane nanocomposites

Tough and stretchable Fe3O4/MoS2/PAni composite hydrogels with conductive and magnetic properties

Contact Info

Product

Resources

About

Modification of chitosan-Fe₃O₄microspheres with isophorone diisocyanate and formation of polyurethane/mchitosan-Fe₃O₄antimicrobial polymer

Bisphosphoric modified amino functional [xFe₃O₄–2xAl(OH)₃]/waterborne polyurethane nanocomposite with superparamagnetism and flame retardancy

Bisphosphoric modified amino functional [xFe₃O₄–2xAl(OH)₃]/waterborne polyurethane nanocomposite with superparamagnetism and flame retardancy

Preparation of novel hydrophobic magnetic Fe₃O₄/waterborne polyurethane nanocomposites