RETRACTED: Surface modification of TiO2 nanoparticles with biodegradable nanocellolose and synthesis of novel polyimide/cellulose/TiO2 membrane

Ahmadizadegan, Hashem

doi:10.1016/j.jcis.2016.11.043

Cited by 42 publications

(8 citation statements)

References 49 publications

(49 reference statements)

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“…Although this equation was not originally developed for additive containing polymers, it can be used to estimate the LOI values of composite materials. This equation has been used for LOI determination in several studies in the literature 12,55–58 . Materials with a LOI value below 20.95% can easily burn in air.…”

Section: Resultsmentioning

confidence: 99%

Improving the flame retardancy and mechanical properties of epoxy composites using flame retardants with red mud waste

Kusakli

Kocaman

Ceyhan

et al. 2020

J of Applied Polymer Sci

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In this study, a novel flame retardant ammonium tetrafluoroborate (ATFB) was successfully synthesized using boric acid (H 3 BO 3) and ammonium hydrogen difluoride (NH 4 HF 2) as the reactants. In addition to ATFB, aluminum hydroxide (Al(OH) 3) was used as a flame retardant and red mud (RM) waste was used as a filler to prepare epoxy composite materials with enhanced flammability properties. The appropriate ratio of RM:ATFB:Al(OH) 3 both in terms of combustion and mechanical properties was found to be 15:10:5 wt%. The tensile strength of the composite in this ratio was obtained as 112 MPa, while the neat ER was 46 MPa. The burnout of the composite with the appropriate RM:ATFB:Al(OH) 3 ratio decreased in the first 10 seconds, and extinguished in 32 seconds. Moreover, the burned area of this composite was the smallest among all the others. The experimental and estimated LOI values for this composite was found as 26 and 29, respectively.

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Section: Resultsmentioning

confidence: 99%

Improving the flame retardancy and mechanical properties of epoxy composites using flame retardants with red mud waste

Kusakli

Kocaman

Ceyhan

et al. 2020

J of Applied Polymer Sci

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“…It should be noted that membranes needed to be pre‐pressed or pre‐heated for about 1 h before all experiments. The gas permeability (P) is calculated based on the following Equation (): 41

P_{i} goodbreak= \frac{Q_{i} \cdot normall}{italicΔP \cdot A}

where P i is the permeability of the tested gas (Barrer); Q i is the flow rate of the permeate gas passing through the membrane and measured by a bubble flow meter (cm 3 /s); is the effective membrane thickness (cm); A is the effective membrane area (cm 2 ); △P is the trans‐membrane pressure (MPa). In general, gas permeability is expressed by Barrer unit.

1 italicBarrer goodbreak= 10^{- 10} \frac{{cm}^{- 3} ((), STP) \cdot italiccm}{{cm}^{- 2} \cdot s \cdot italiccmHg}

The ideal gas selectivity of CO 2 and N 2 can be determined by: Equation ()

α goodbreak= \frac{P_{{CO}_{2}}}{P_{N_{2}}}

…”

Section: Methodsmentioning

confidence: 99%

Preparation ofAl₂O₃/PDA/Pebax membrane modified by (C₃NH₂MIm)(PF₆) for improvingCO₂separation performance

Yan

Liu

et al. 2022

J of Applied Polymer Sci

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Mixed matrix membranes (MMMs) are currently the focus of research due to their possible high separation performance in separating CO 2 process. However, inorganic nanomaterials are easy to agglomerate so as to affect CO 2 separation performance. In order to overcome the agglomeration of nanomaterials in MMMs, a new filler, Al 2 O 3 /PDA-TIL, was prepared, in which ionic liquid (TIL) was introduced on the surface of nano-Al 2 O 3 by TIL grafting polydopamine coated on aluminum oxide. And a new type of Al 2 O 3 /PDA-TIL/ Pebax MMMs membrane was prepared by the blend of new fillers and Pebax.The properties of MMMs prepared were characterized by SEM, FTIR, XRD, XPS, etc. Results showed that TIL had reacted with PDA to form Schiff base structure, indicating that TIL had been successfully grafted onto PDA coated on Al 2 O 3 . As a result, TIL on the surface Al 2 O 3 successfully reduced the agglomeration of Al successfully reduced the agglomeration of Al 2 O 3 in the membrane and improved the separation of CO 2 . The gas permeability test results showed that the CO 2 permeability of MMMs increased from 60.69 Barrer to 101.12 Barrer, and the CO 2 /N 2 selectivity increased from 49.34 to 79 at 30 C and 0.1 MPa. Therefore, Al 2 O 3 /PDA-TIL/Pebax membrane has a good application prospect in CO 2 separation process.

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“…These properties render the synthesized bionanocomposites suitable for applications in drug delivery devices, biosensors and organic electroconductive materials [232]. Moreover, novel bionanocomposites were developed by Ahmadizadegan et al consisting of polyimide/cellulose/TiO 2 (PI/BNCs) using inexpensive ultrasonic irradiation process [233].…”

Section: Substrates For Bionanocompositesmentioning

confidence: 99%

Recent Advances in Biodegradable Polymers

Dhamaniya¹,

Gupta²,

Kakatkar³

2018

J. Res. Updates Polym. Sci.

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Biodegradable polymers are important as an alternative to conventional non-degradable polymers for sustainable eco-system. The recent trends indicate that the new developments in biodegradable polymers focus on novel polymer systems that can cater the need of biomedical and packaging applications in-terms of performance and economics. The new interest is rapidly moving toward reducing carbon footprint through utilization of carbon dioxide and developing new methods of manufacturing such as 3D printing for specific purposes. This review focus on the present state-of-art and recent developments in biodegradable polymers covering their sources, synthetic methodologies, salient properties, degradation patterns, polymer blends and nanocomposites. As well as biodegradable polymers as a 3D printing material and the use of carbon dioxide as a renewable raw material for biomedical and packaging applications.

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RETRACTED: Surface modification of TiO2 nanoparticles with biodegradable nanocellolose and synthesis of novel polyimide/cellulose/TiO2 membrane

Abstract: Graphical abstract

Cited by 42 publications

References 49 publications

Improving the flame retardancy and mechanical properties of epoxy composites using flame retardants with red mud waste

Improving the flame retardancy and mechanical properties of epoxy composites using flame retardants with red mud waste

Preparation ofAl₂O₃/PDA/Pebax membrane modified by (C₃NH₂MIm)(PF₆) for improvingCO₂separation performance

Recent Advances in Biodegradable Polymers

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RETRACTED: Surface modification of TiO2 nanoparticles with biodegradable nanocellolose and synthesis of novel polyimide/cellulose/TiO2 membrane

Abstract: Graphical abstract

Cited by 42 publications

References 49 publications

Improving the flame retardancy and mechanical properties of epoxy composites using flame retardants with red mud waste

Improving the flame retardancy and mechanical properties of epoxy composites using flame retardants with red mud waste

Preparation ofAl2O3/PDA/Pebax membrane modified by (C3NH2MIm)(PF6) for improvingCO2separation performance

Recent Advances in Biodegradable Polymers

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Preparation ofAl₂O₃/PDA/Pebax membrane modified by (C₃NH₂MIm)(PF₆) for improvingCO₂separation performance