Compatibilization of inorganic particles for polymeric nanocomposites. Optimization of the size and the compatibility of ZnO particles

Khrenov, Victor; Schwager, F.; Klapper, Markus; Koch, M.; Müllen, Kläus

doi:10.1007/s00289-006-0721-1

Cited by 30 publications

(17 citation statements)

References 30 publications

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“…Many inorganic nanoparticles enhance the thermal stability of PMMA, when MMA is polymerized in their presence [54]. The addition of nano ZnO also thermally stabilizes the PMMA matrix [37,54,55]. The DTG curve of pure PMMA ( Figure 6) shows three degradation peaks at 270, 330 and 370°C, which can be explained by the degradation of pure PMMA studied in nitrogen atmosphere [56].…”

Section: Results and Discussion 31 Synthesis Of Nano Znomentioning

confidence: 97%

“…For that reason the particle surface needs to be hydrophobically modified. In most cases various organic ligands are used for modification, such as: alkyl silanes, oligomeric silicones, alkyl phosphonic or fatty acids as well as various statistical and block copolymers [33][34][35][36][37]. By in-situ bulk polymerization of MMA in the presence of ZnO nanoparticles, transparent ZnO/PMMA nanocomposites with a high concentration of ZnO have already been prepared [38][39][40][41][42][43].…”

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confidence: 99%

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Polyol mediated nano size zinc oxide and nanocomposites with poly(methyl methacrylate)

Anžlovar¹,

Kogej²,

Orel³

et al. 2011

Express Polym. Lett.

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Abstract. Organophilic nano ZnO particles have been synthesized in various diols (ethylene glycol -EG, 1,2 propane diol -PD, 1,4 butane diol -BD and tetra(ethylene glycol) -TEG) in the presence of p-toluenesulfonic acid, p-TsOH, as an end capping agent. The addition of p-TsOH reduces the ZnO particle size and increases its crystallite size. With increasing diol main chain length the ZnO particle size increases (EG (32 nm) < PD (33 nm) < BD (72 nm) < TEG (86 nm)). Using the assynthesized and unmodified ZnO nanocomposites with poly(methyl methacrylate), PMMA, matrix have been prepared by the in-situ bulk polymerization of methyl methacrylate, MMA. The addition of surface modifiers is avoided which is an advantage for the application since they can influence other properties of the material. ZnO particles, especially those with smaller particle sizes (EG -32 nm, PD -33 nm) showed enhanced effect on the thermal stability of PMMA, ultraviolet, UV, absorption and transparency for visible light. Transparent materials with high UV absorption and with enhanced resistance to sunlight were obtained by optimizing the nanocomposite preparation procedure using ZnO particles of about 30 nm size in concentrations between 0.05 and 0.1 wt%. The reported nanocomposite preparation procedure is compatible with the industrial process of PMMA sheet production.

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Section: Results and Discussion 31 Synthesis Of Nano Znomentioning

confidence: 97%

mentioning

confidence: 99%

Polyol mediated nano size zinc oxide and nanocomposites with poly(methyl methacrylate)

Anžlovar¹,

Kogej²,

Orel³

et al. 2011

Express Polym. Lett.

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“…The synthesis of hydrophobized particles via an inverse emulsion technique has been reported for dense metal oxide, sulfides, carbonates and also metal nanoparticles. [24,26,27] More complex inorganic materials such as barium-and strontium based-perovskites and core-shell ZnO-SiO 2 nanoparticles are also accessible. As the post-hydrophobization of already existing particles will remain a challenge, the present approach offers a very fast and efficient method for obtaining functionalized nanoparticles.…”

Section: Reagentmentioning

confidence: 99%

“…The first approach (method 1) describes the use of statistical amphiphilic copolymers as surfactants in the preparation of inorganic nanoparticles in an inverse emulsion process. [24][25][26][27] This process offers a broad variety of nanosized inorganic particles, as metal oxides, chalcogenides, carbonates or free metals can be prepared from a saturated salt solution by a precipitation process. Furthermore, more complex inorganic-organic nanoparticles are accessible by this process, such as core-multiple-shell (ZnO-SiO 2 -polymer particles) or perovskite-based particles.…”

Section: Introductionmentioning

confidence: 99%

Complex Inorganic/Organic Core‐Shell Particles by an Inverse Emulsion Technique

Schmidtke

Stelzig

Geidel

et al. 2010

Macromolecular Symposia

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Summary: Two synthetic approaches to modify the surface of inorganic particles are presented. In the first approach the inorganic particles are prepared in-situ in a confined space in inverse emulsions. The used amphiphilic statistical copolymers act not only as emulsifiers, but they also hydrophobize the remaining inorganic particles after the precipitation. This approach represents a versatile method to obtain various inorganic nanoparticles as well as more complex inorganic materials like coremultiple shell and perovskite-based nanoparticles. The second procedure uses preformed inorganic particles, as an aqueous dispersion, to modify them with surface active amphiphilic copolymers in a multicomponent solvent system. This method turns out to be a simple but highly efficient method to modify preformed inorganic nanoparticles. The particles are characterized by SEM, TEM and dynamic light scattering. The modified inorganic nanoparticles are suitable to be homogenously incorporated into a polymer matrix to form transparent nanocomposite materials.

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“…126 155 Čestice cink oksida sintetisane su u prisustvu kopolimera etilheksil metakrilata i funkcionalizovanog dimetilaminoetil metakrilata tako što je polimer rastvoren u toluenu a posle su u rastvor dodati vodeni rastvor prekursora, cink acetata, i rastvor natrijum hidroksida potreban za taloženje cink oksida. 156 Čestice silicijum-dioksida sintetisane su u PMMA matrici dodavanjem rastvora prekursora, tetraetoksi silana, u rastvor PMMA funkcionalizovanog trietoksisilan grupama u tetrahidrofuranu. 157 Čestice TiO 2 su sintetisane u PMMA matrici tako što su posle određenog vremena, u toku reakcije polimerizacije metil metakrilata i 3-(tri-metoksisilil)-propil metakrilata inicirane benzoil peroksidom, u reakcionu smešu dodavani rastvori tetra-butoksi-titanata ili tetra-(izo-propoksi)-titanata.…”

Section: Dobijanje Polimernih Nanokompozitaunclassified

Preparation of nanocomposites based on thermoplastic polymers and influence of titanium and iron oxides nanoparticles on their properties

Džunuzović¹

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Compatibilization of inorganic particles for polymeric nanocomposites. Optimization of the size and the compatibility of ZnO particles

Cited by 30 publications

References 30 publications

Polyol mediated nano size zinc oxide and nanocomposites with poly(methyl methacrylate)

Polyol mediated nano size zinc oxide and nanocomposites with poly(methyl methacrylate)

Complex Inorganic/Organic Core‐Shell Particles by an Inverse Emulsion Technique

Preparation of nanocomposites based on thermoplastic polymers and influence of titanium and iron oxides nanoparticles on their properties

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