The fabrication and self-flocculation effect of hybrid TiO2 nanoparticles grafted with poly(N-isopropylacrylamide) at ambient temperature via surface-initiated atom transfer radical polymerization

Gong, Zongqiang; Tang, Dewei; Guo, Yudi

doi:10.1039/c2jm32168h

Cited by 41 publications

(26 citation statements)

References 31 publications

(29 reference statements)

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“…Amino‐functionalized SBA‐15 (SBA‐NH 2 ) was prepared via a reaction between the surface silicon hydroxyl groups of SBA‐15 and APTES in an ethanol medium. Subsequently, an amide reaction between SBA‐NH 2 and BMBP was facilitated to fabricate 2‐bromoisobutyrate‐functionalized SBA‐15 (SBA‐Br) with the catalysis of pyridine . The detailed steps are given in the Supporting Information.…”

Section: Methodsmentioning

confidence: 99%

“…Amino-functionalized SBA-15 (SBA-NH 2 ) was prepared via a reaction between the surface silicon hydroxyl groups of SBA-15 and APTES in an ethanol medium. Subsequently, an amide reaction between SBA-NH 2 and BMBP was facilitated to 37 The detailed steps are given in the Supporting Information. Finally, the SBA-g-P(PEGMA) was synthesized via the SI-ATRP process.…”

Section: Synthesis Of Sba-g-p(pegma)mentioning

confidence: 99%

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Development of a high‐performance polysulfone hybrid ultrafiltration membrane using hydrophilic polymer‐functionalized mesoporous SBA − 15 as filler

Wang

et al. 2019

J of Applied Polymer Sci

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A novel polysulfone hybrid ultrafiltration membrane was developed by blending hydrophilic poly[poly(ethylene glycol) methyl ether methacrylate] [P(PEGMA)] grafted mesoporous SBA‐15 [SBA‐g‐P(PEGMA)] as filler. The hydrophilic SBA‐g‐P(PEGMA) fillers were synthesized via surface‐initiated atom transfer radical polymerization. The effects of the SBA‐g‐P(PEGMA) fillers on the prepared hybrid membranes were systematically investigated. Compared with pristine SBA‐15 fillers, SBA‐g‐P(PEGMA) fillers contributed to higher hydrophilicity and a more developed pore structure in the hybrid membranes. Specifically, SBA‐15 grafted with a moderate P(PEGMA) molecular weight could better preserve the valid open‐ended filler pore structure in the membrane matrix, thus facilitating membrane permeability. The pure water flux of the as‐prepared polysulfone (PSF)/SBA‐g‐P(PEGMA) membrane was three times that of the PSF/SBA‐15 membrane (271.7 L m−2 h−1 vs. 88.2 L m−2 h−1) with similar membrane selectivity. Moreover, the PSF/SBA‐g‐P(PEGMA) membranes showed improved antifouling property. This work paves the way for developing high‐performance hybrid membranes by blending of hydrophilic polymer‐functionalized mesoporous fillers in the future. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47353.

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Section: Methodsmentioning

confidence: 99%

Section: Synthesis Of Sba-g-p(pegma)mentioning

confidence: 99%

Development of a high‐performance polysulfone hybrid ultrafiltration membrane using hydrophilic polymer‐functionalized mesoporous SBA − 15 as filler

Wang

et al. 2019

J of Applied Polymer Sci

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“…SI-ATRP at present work supplied an effective grafting method for polymers with different functional on the surface of the inorganic phase, without sacrificing its original properties. 38 Furthermore, the software of XSPEAK 4.1 was employed to fit the C1s peak of ZnO NRs-PNIPAM (as shown in Fig. 5).…”

Section: Materials Characterizationmentioning

confidence: 99%

Temperature-responsive zinc oxide nanorods arrays grafted with poly(N-isopropylacrylamide) via SI-ATRP

Qian

Tang

et al. 2015

RSC Adv.

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Well fabricated ZnO nanorods (ZnO NRs) arrays with preferred-orientation that grown on pre-deposited ZnO seed layers substrate were selected to graft thermo-responsive polymers of poly(N-isopropylacrylamide) (PNIPAM) by surfaceinitiated atom transfer radical polymerization (SI-ATRP). As a controlled/"living" radical polymerization, SI-ATRP could endow the systems with the characteristics of the grafted PNIPAM, meanwhile, with the maintaining of the properties of ZnO nanorods. The structures of ZnO and the grafted polymer with the relative high molecular weights (Mn, 24300) and narrow molecular weight distributions (Mw/Mn, 1.19) that determined by GPC detection, were characterized by XRD and FT-IR. The graft amount of PNIPAM on ZnO nanorods and the interactions between the two components were determined by TG and XPS, respectively. The relative thin layers of PNIPAM (~15 nm) formed around NRs via SI-ATRP method were observed by SEM. And the temperature-sensitivity of the grafted nanorods were proved by the contact angles measurements. Furthermore, photodegradation of Rhodamine B (Rh-B) by the grafted nanorods revealed that ZnO NRs-PNIPAM exhibited photocatalysis and temperature responsibility characteristics, indicating the significant potential applications with tunable responsiveness by changing the environmental conditions.

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“…erefore, in order to detect the microrheology behaviors of PNIPAM microgel suspension, the tracer probe should be a pseudo-PNIPAM particle, i.e., the probe surface may be grafted with a layer of PNIPAM which behaves like those PNIPAM microgels in the suspension. To this purpose, we have synthesized silica (SiO 2 ) particle with uniform diameter via Stöber's route [29,30] and grafted PNIPAM chains on the surface of them via atomic transfer radical polymerization (ATRP) [31]. We use FTIR to characterize the surface chemistry and use tunneling electron microscopy (TEM) and dynamic laser light scattering (DLS) to identify the size and morphology of the SiO 2 particle before and after grafting.…”

Section: Introductionmentioning

confidence: 99%

Colloidal Probes of PNIPAM-Grafted SiO₂ in Studying the Microrheology of Thermally Sensitive Microgel Suspensions

Shang

Gao

et al. 2020

Advances in Polymer Technology

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The complex rheology and the phase behavior of thermally sensitive poly(N-isopropylacrylamide) (PNIPAM) microgels have been investigated in both the swollen and collapsed states by using microrheology. To avoid the interactions between the tracer probes and the PNIPAM microgels, such as the adsorption or the depletion effect, the probes of silica (SiO2) particles have been grafted with PNIPAM chains (SiO2-PNIPAM) and characterized with Fourier transform infrared spectroscopy (FTIR). The successful preparation of SiO2-PNIPAM has also been proved by the investigation of the particle size and morphology with dynamic light scattering (DLS) and transmission electron microscope (TEM) below and beyond the phase transition temperature of PNIPAM. The microrheology of the PNIPAM microgel suspension has been investigated by using the prepared SiO2-PNIPAM particles as microrheological probes, and the results show that the diffusive coefficient of the probes in the swollen state is one-fifth of that in the collapsed state, and the viscosity of the PNIPAM microgel suspension in the swollen state is four times higher than that in the collapsed state, indicating SiO2-PNIPAM is a good probe in the microrheological study of PNIPAM microgel suspensions.

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The fabrication and self-flocculation effect of hybrid TiO2 nanoparticles grafted with poly(N-isopropylacrylamide) at ambient temperature via surface-initiated atom transfer radical polymerization

Cited by 41 publications

References 31 publications

Development of a high‐performance polysulfone hybrid ultrafiltration membrane using hydrophilic polymer‐functionalized mesoporous SBA − 15 as filler

Development of a high‐performance polysulfone hybrid ultrafiltration membrane using hydrophilic polymer‐functionalized mesoporous SBA − 15 as filler

Temperature-responsive zinc oxide nanorods arrays grafted with poly(N-isopropylacrylamide) via SI-ATRP

Colloidal Probes of PNIPAM-Grafted SiO₂ in Studying the Microrheology of Thermally Sensitive Microgel Suspensions

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The fabrication and self-flocculation effect of hybrid TiO2 nanoparticles grafted with poly(N-isopropylacrylamide) at ambient temperature via surface-initiated atom transfer radical polymerization

Cited by 41 publications

References 31 publications

Development of a high‐performance polysulfone hybrid ultrafiltration membrane using hydrophilic polymer‐functionalized mesoporous SBA − 15 as filler

Development of a high‐performance polysulfone hybrid ultrafiltration membrane using hydrophilic polymer‐functionalized mesoporous SBA − 15 as filler

Temperature-responsive zinc oxide nanorods arrays grafted with poly(N-isopropylacrylamide) via SI-ATRP

Colloidal Probes of PNIPAM-Grafted SiO2 in Studying the Microrheology of Thermally Sensitive Microgel Suspensions

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Product

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Colloidal Probes of PNIPAM-Grafted SiO₂ in Studying the Microrheology of Thermally Sensitive Microgel Suspensions