Nanostructure matrix interactions in methacrylate composites

Mohomed, K.; Gerasimov, Timofey G.; Abourahma, Heba; Zaworotko, Michael J.; Harmon, Julie P.

doi:10.1016/j.msea.2005.03.115

Cited by 14 publications

(24 citation statements)

References 19 publications

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“…In order to improve POF optical efficiency, research and processing are being developed in the direction of nanocomposite POF doped with dyes, and fluorescent or phosphorescent nanopowder. 6 The optical properties of nano-sized phosphors are significantly improved in comparison to bulk materials (stronger luminescence emission and modified radiative lifetime). [7][8][9][10][11][12][13][14][15][16][17][18][19][20] Poly(methyl methacrylate), PMMA, nanocomposites containing Y 2 O 3 doped with rare earths (RE) ions have been investigated and it was suggest that doped Y 2 O 3 nanocrystals embedded in PMMA would have potential for various photonic applications, including laser systems and optical communication devices.…”

Section: Introductionmentioning

confidence: 99%

PMMA-Y2O3 (Eu3+) nanocomposites: Optical and mechanical properties

Musbah¹,

Radojević²,

Borna³

et al. 2011

JSCS

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The results of a study related to the processing and characterization of poly(methyl methacrylate) (PMMA)-Y 2 O 3 (Eu 3+ ) nanocomposites are presented herein. The nanocomposite samples were prepared using a laboratory mixing molder with different contents of Eu-ion doped Y 2 O 3 nanophosphor powder. The influence of particle content on the optical and dynamic mechanical properties of the nanocomposites was investigated. The intensity of the luminescence emission spectra increased as the nanophosphor content in the composite increased. The results of dynamic mechanical analysis revealed that the storage modulus, loss modulus and glass transition temperature (T g ) of the polymer composites increased with increasing content of the nanophosphor powder. The microhardness data also confirmed that the hardness number increased with nanoparticles concentration in the PMMA nanocomposites. The obtained results revealed a relatively linear relationship between T g and the Vickers hardness.

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Section: Introductionmentioning

confidence: 99%

PMMA-Y2O3 (Eu3+) nanocomposites: Optical and mechanical properties

Musbah¹,

Radojević²,

Borna³

et al. 2011

JSCS

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“…In the studies where PEMA was used as a matrix, the nanocomposites of montmorillonite [25], dibenzylidene sorbitol/colloidal silica [26], and FeCl 3 [27] were prepared using the solution intercalation method. As to the studies related to PHEMA nanocomposites, (DMSO)(MeOH)-Cu 2 (benzene-1,3-dicarboxylate-5-OH) 2 I 12 [28] in polymerization medium, silica [29] and TiO 2 [30] in sol-gel process and silica [29] in direct mixing were used as fillers.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of sepiolite‐poly(ethyl methacrylate) and poly(2‐hydroxyethyl methacrylate) nanocomposites

2008

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Poly(ethyl methacrylate) (PEMA) and poly(2-hydroxyethyl methacrylate) (PHEMA) nanocomposites with sepiolite in pristine and silylated form were prepared using the solution intercalation method and characterized by the measurements of XRD, TEM, FTIR-ATR, TG/DTG, and DSC. The TEM analysis indicated that the volume fraction of fibers in sepiolite decreased and the fiber bundles dispersed in PEMA and PHEMA at a nanometer scale. These results regarding TEM micrographs were in agreement with the data obtained by XRD. The increase in thermal stability of nanocomposites of PEMA is higher than that of PHEMA according to the data obtained from TG curves. The DTG analysis revealed that sepiolite/modified sepiolite caused some changes, as confirmed by FTIR in the thermal degradation mechanism of the polymers. T g temperatures of PEMA and PHEMA usually increased upon the addition of sepiolite/modified sepiolite. In addition, modification of sepiolite with 3-APTS had a slight influence on thermal properties of the nanocomposites.

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“…These values are similar to those of known NHC-metal complexes 42 – 49 . In [( S ) -L 2 H 2 ] · ( PF 6 ) 2 and complexes 1 – 3 , the intra-molecular π-π interactions between naphthalene rings and benzimidazole (or imidazole) rings are observed 56 , 57 (Table S2 ). In complexes 1 – 3 , one oxygen atom in each ligand participates in coordination with Hg(II) ion, and each of the molecules contains one 11-membered ring and one 6-membered ring.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and structural studies of N-heterocyclic carbene Ag(I) and Hg(II) complexes and recognition of dihydrogen phosphate anion

Liu

Zhao

et al. 2017

Sci Rep

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Bis-benzimidazolium salt (S)-2,2′-bis[2″-(N-Et-benzimidazoliumyl)ethoxy]-1,1′-binaphthyl hexafluorophosphate [(S)-L1H2]·(PF6)2 and bis-imidazolium salts (S)-2,2′-bis[2″-(N-R-imidazoliumyl)ethoxy]-1,1′-binaphthyl hexafluorophosphate [(S)-L2H2]·(PF6)2 and [(S)-L3H2]·(PF6)2 (R = ethyl or benzyl), as well as their five N-heterocyclic carbene Hg(II) and Ag(I) complexes such as [(S)-L1Hg(HgBr4)] (1), [(S)-L2Hg(HgBr4)] (2), [(S)-L2Hg(HgI4)] (3), {[(S)-L2Ag](PF6)}n (4) and [(S)-L3Ag](PF6) (5) have been prepared and characterized. Each of complexes 1–3 consists of two rings (one 6-membered ring and one 11-membered ring), in which the oxygen atom in the ligand participates in coordination with Hg(II) ion. In complex 4, 1D helical polymeric chain is formed via biscarbene ligand (S)-L2 and Ag(I) ion. A 15-membered macrometallocycle is constructed through a ligand (S)-L3 and a Ag(I) ion in complex 5. Additionally, the selective recognition of H2PO4 − using complex 5 as a receptor was investigated on the basis of fluorescence and UV/vis spectroscopic titrations. The results indicate that complex 5 can distinguish effectively H2PO4 − from other anions.

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Nanostructure matrix interactions in methacrylate composites

Cited by 14 publications

References 19 publications

PMMA-Y2O3 (Eu3+) nanocomposites: Optical and mechanical properties

PMMA-Y2O3 (Eu3+) nanocomposites: Optical and mechanical properties

Preparation and characterization of sepiolite‐poly(ethyl methacrylate) and poly(2‐hydroxyethyl methacrylate) nanocomposites

Synthesis and structural studies of N-heterocyclic carbene Ag(I) and Hg(II) complexes and recognition of dihydrogen phosphate anion

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