Synthesis and characterization of novel (amide–imide)-silica composites by the sol–gel process

Babooram, Keshwaree; Francis, Bejoy; Bissessur, Rabin; Narain, Ravin

doi:10.1016/j.compscitech.2007.10.012

Cited by 42 publications

(20 citation statements)

References 14 publications

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“…These macromolecules have excellent mechanical properties, high-temperature resistance, noteworthy oxidative stability and hydrogen bonding interaction, being a promising matrix candidate for hybrid materials [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Novel flame retardant zirconia-reinforced nanocomposites containing chlorinated poly(amide-imide): synthesis and morphology probe

Mallakpour

Zeraatpisheh

2013

Journal of Experimental Nanoscience

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In the present investigation, a thermally stable poly(amide-imide) (PAI) was synthesised from the polymerisation reaction of 4,4 0 -methylenebis(3-chloro-2,6-diethyl trimellitimidobenzene) as a chlorinated diacid with 4,4 0 -methylenebis (3-chloro-2,6-diethylaniline) using molten tetra-n-butylammonium bromide and triphenyl phosphite as a condensing agent and green media. This methodology offers enhancements for the synthesis of polymers with regard to yield of products, simplicity in operation, and green aspects by avoiding volatile solvents. From the chemical point of view, the chloride and ethylene groups impart to the polymer's chain increased solubility of obtained polymer in organic solvent. Then, the surface of zirconia nanoparticles (ZrO 2 -NPs) was modified with 3-aminopropyltriethoxylsilane as a coupling agent. The obtained polymer and inorganic metal oxide NPs were used to prepare PAI/ZrO 2 nanocomposites through ultrasonic irradiation. The formation of PAI was confirmed by 1 H-NMR, FT-IR spectroscopy, and elemental analysis. The obtained polymer was synthesised with good yield (90%) and moderate inherent viscosity (0.48 dL/g). The resulting NP filled composites were also characterised by FT-IR, XRD, FE-SEM, TEM and TGA. The TEM and FE-SEM results indicated a high dispersion level of the nanoscale inorganic particles in the polymer matrix. In this article, ZrO 2 -NPs are employed to improve flame retardancy of nanocomposites. TGA thermographs confirmed that the heat stability of the prepared NP-reinforced composites was improved in the presence of ZrO 2 nanocrystals.

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Section: Introductionmentioning

confidence: 99%

Novel flame retardant zirconia-reinforced nanocomposites containing chlorinated poly(amide-imide): synthesis and morphology probe

Mallakpour

Zeraatpisheh

2013

Journal of Experimental Nanoscience

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“…As a kind of thermoplastic resin, PAIs have been widely employed as adhesives, electronic and composite materials, fibers, and film materials [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of polyamide-imides based on the different chain length of amino acids in molten TBAB as a green media

Feng

Yang

et al. 2016

Green Processing and Synthesis

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As a green, safe and eco-friendly solvent, ionic liquids (ILs) have been widely used in organic syntheses. In this paper, polyamide-imides (PAIs) based on different chain length of amino acids were synthesized by two methods, i.e. in the presence of tetrabutyl ammonium bromide (TBAB) as IL and via conventional polycondensation. The obtained results have been compared. It was confirmed that by the polymerization method in the IL, the PAIs can get higher molecular weight and viscosity and better heat resistance and crystallinity after annealing treatment. All polymers showed higher tensile strength (122)(123)(124)(125)(126)(127)(128)(129)(130)(131)(132)(133)(134) and tensile modulus (2.4-3.0 GPa). Among them, the molecular weight of PAIs based on glycine was characterized by gel permeation chromatography.

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“…Therefore, poly(amide-imide)s have been synthesized to meet this need. Poly(amide-imide) (PAI) is a kind of thermoplastic resin containing both amide and heterocycle imide structures along the main chain of the polymer backbone, which possesses high temperature resistance, outstanding mechanical properties, excellent oxidative stability and hydrogen bonding interaction, [5][6][7][8][9][10][11][12] thus rendering the material even more efficient [13,14] . Another way of improving the mechanical, thermal, and chemical properties and resistance to hostile environments is by making their composites materials [15,16] .…”

Section: Introductionmentioning

confidence: 99%

Novel Sepiolite-based Poly(Amide-imide) Nanocomposites: Preparation and Properties

Abbasi

Mehdipour‐Ataei

2014

Polymer-Plastics Technology and Engineering

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Novel sepiolite-based poly(amide-imide) nanocomposites were prepared by in-situ polymerization via polycondensation of a diamine containing amide groups with hexafluoropropane dianhydride. The process involved dispersion of sepiolite in poly(amic acid) solution followed by thermal imidization to get ultimate nanocomposites. The morphology, thermal and mechanical performances of nanocomposites with various sepiolite contents were studied. Nanoparticles were homogenously dispersed throughout the matrix with 50-65 nm size range. Due to such dispersion, poly(amide-imide)-sepiolite nanocomposite films exhibited improvements on the thermal-mechanical properties. The best results arose from favorable miscibility between polymer and sepiolite in the nanocomposites when 3 wt.% nanoparticles were introduced into poly(amide-imide) matrix.

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Synthesis and characterization of novel (amide–imide)-silica composites by the sol–gel process

Cited by 42 publications

References 14 publications

Novel flame retardant zirconia-reinforced nanocomposites containing chlorinated poly(amide-imide): synthesis and morphology probe

Novel flame retardant zirconia-reinforced nanocomposites containing chlorinated poly(amide-imide): synthesis and morphology probe

Synthesis and characterization of polyamide-imides based on the different chain length of amino acids in molten TBAB as a green media

Novel Sepiolite-based Poly(Amide-imide) Nanocomposites: Preparation and Properties

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