Preparation, characterization and gas separation properties of nanocomposite materials based on novel silane functionalizing polyimide bearing pendent naphthyl units and ZnO nanoparticles

Dinari, Mohammad; Ahmadizadegan, Hashem

doi:10.1039/c4ra13190h

Cited by 17 publications

(16 citation statements)

References 40 publications

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“…Aromatic polyimides are considered as one of the most significant modules of high performance polymers with a wide variety of applications from engineering plastics in aerospace industries to membranes in gas separation due to their exceptional mechanical strength and thermal stability, good electrical and optical properties as well as chemical resistance to many solvents [33], [34]. PIs bearing trifluoromethyl group (–CF 3 ) substituent have drawn much attention because of significant enhancements in the polymer properties.…”

Section: Introductionmentioning

confidence: 99%

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

Ahmadizadegan

2017

Journal of Colloid and Interface Science

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Section: Introductionmentioning

confidence: 99%

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

Ahmadizadegan

2017

Journal of Colloid and Interface Science

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“…5-Methyl- N , N -bis(4-nitrophenyl)naphthalen-1-amine was synthesized according to the authors’ prior work; 40 6.30 mmol of 5-methylnaphthalen-1-amine, 12.60 mmol of 4-fluoronitrobenzene, 19 mmol of cesium fluoride, and 15 mL of dimethylsulfoxide (DMSO) were placed into a 50 mL three-neckround-bottom flask. The mixture was heated while stirring at 110°C for 8 h under nitrogen atmosphere.…”

Section: Experimental Phase Of the Studymentioning

confidence: 99%

Structural, thermal and mechanical properties of polymer nanocomposites based on organosoluble polyimide with naphthyl pendent group and layered double hydroxide

Dinari

Rajabi

2016

High Performance Polymers

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In this study, a soluble aromatic polyimide (PI) with naphthyl pendent group was initially synthesized by the reaction of pyromellitic dianhydride (PMDA) with 5-methyl- N,N-bis(4-nitrophenyl)naphthalen-1-amine. Then, via co-precipitation reaction of zinc nitrate hexahydrate and chromium nitrate nonahydrate, Zn/Cr-layered double hydroxide (LDH) was synthesized using hydrothermal techniques. Finally, different novel nanocomposites (NCs) based on PI and Zn/Cr-LDH (1, 2, 4 wt%) were produced through in situ polymerization. The resulting materials were characterized by Fourier transform infrared spectroscopy, X-ray powder diffraction, thermogravimetry analysis (TGA), field emission scanning electron microscopy, transmission electron microscopy, and mechanical testing. According to the TGA results, the prepared NCs showed high thermal stability at higher temperature due to the good dispersion and homogeneity of Zn/Cr-LDH in polymeric matrix. Consequently, the mechanical properties of the synthesized NCs were enhanced by the incorporation of 2 wt% Zn/Cr-LDH in the polymer matrix.

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“…It was shown that surface modification of nanoparticles improves their dispersibility in a polymer matrix and enhances dielectric properties of the films. In the work [ 12 ], the end –Si(OH) 3 groups were attached to the polymer to increase its compatibility with inorganic particles. Additionally, it was shown that inorganic nanoparticles can regulate structure of polyimide membranes, which influence the selectivity of membranes in separation applications [ 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Structure of Composite Based on Polyheteroarylene Matrix and ZrO2 Nanostars Investigated by Quantitative Nanomechanical Mapping

et al. 2017

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It is known that structure of the interface between inorganic nanoparticles and polymers significantly influences properties of a polymer-inorganic composite. At the same time, amount of experimental researches on the structure and properties of material near the inorganic-polymer interface is low. In this work, we report for the first time the investigation of nanomechanical properties and maps of adhesion of material near the inorganic-polymer interface for the polyheteroarylene nanocomposites based on semi-crystalline poly[4,4 -bis (4"-aminophenoxy)diphenyl]imide 1,3-bis (3 ,4-dicarboxyphenoxy) benzene, modified by ZrO 2 nanostars. Experiments were conducted using quantitative nanomechanical mapping (QNM) mode of atomic force microscopy (AFM) at the surface areas where holes were formed after falling out of inorganic particles. It was found that adhesion of AFM cantilever to the polymer surface is higher inside the hole than outside. This can be attributed to the presence of polar groups near ZrO 2 nanoparticle. QNM measurements revealed that polymer matrix has increased rigidity in the vicinity of the nanoparticles. Influence of ZrO 2 nanoparticles on the structure and thermal properties of semi-crystalline polyheteroarylene matrix was studied with wide-angle X-ray scattering, scanning electron microscopy, and differential scanning calorimetry.

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Preparation, characterization and gas separation properties of nanocomposite materials based on novel silane functionalizing polyimide bearing pendent naphthyl units and ZnO nanoparticles

Abstract: Nanocomposites of polyimide with silane end group and ZnO nanoparticles with good thermal and mechanical properties were prepared and were used for gas separation.

Cited by 17 publications

References 40 publications

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

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

Structural, thermal and mechanical properties of polymer nanocomposites based on organosoluble polyimide with naphthyl pendent group and layered double hydroxide

Structure of Composite Based on Polyheteroarylene Matrix and ZrO2 Nanostars Investigated by Quantitative Nanomechanical Mapping

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