Advances in the science and technology of paints, inks and related coatings: 2006

Holme, I.

doi:10.1007/bf02765587

Cited by 13 publications

(7 citation statements)

References 92 publications

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“…Hyperbranched polymers have potential uses in bio‐applications357 and surface coatings,358–360 and have been synthesized via conventional free radical copolymerization of monomers with difunctional monomers (used as cross‐linker) in the presence of thiols361–363 or in the presence of cobalt chain transfer (CCT) agents 364. The emergence of controlled radical polymerizations, such as ATRP, RAFT and NMP, has significantly extended the synthetic scope for generating hyperbranched structures, with improved control over the branching process as well as the overall molecular weight of the branched chains.…”

Section: Synthesis Of Well‐control Polymer Architecture Using Raft Pomentioning

confidence: 99%

Characterization and electrical properties of methyl‐2‐hydroxyethyl cellulose doped with erbium nitrate salt

El‐Kader

Said

El-Naggar

et al. 2006

J of Applied Polymer Sci

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X-ray diffraction, infrared (IR), and electrical properties for pure and Er (NO 3 ) 3 -doped methyl-2-hydroxyethyl cellulose (MHEC) with concentrations of 0.5, 1, 2, 5, 7, and 10 wt % were studied. X-ray analysis indicates that the addition of Er (NO 3 ) 3 , which is a crystalline material, to MHEC at concentrations 10 and 13 wt % leads to the formation of crystalline phases in the amorphous polymeric matrix. The appearance of the bending mode n 2 and the combination mode (n 1 þ n 4 ) of Er (NO 3 ) 3 in the IR spectra of composite samples indicates the coordination of nitro group in the chains of MHEC. From the I-V characteristics, it was found that the charge transport mechanism in MHEC appears to be essentially space charge limited conduction, while the predominant mechanism in the composite samples is Poole-Frenkel. Values of both drift mobility (m) and the charge carrier density (n) has been reported. The temperature dependence conductivity data has been analyzed in terms of the Arrhenius and Mott's variable range hopping models. Different Mott's parameters such as the density of states, N(E F ), hopping distance (R), and average hopping energy (W) have been evaluated.

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Section: Synthesis Of Well‐control Polymer Architecture Using Raft Pomentioning

confidence: 99%

Characterization and electrical properties of methyl‐2‐hydroxyethyl cellulose doped with erbium nitrate salt

El‐Kader

Said

El-Naggar

et al. 2006

J of Applied Polymer Sci

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“…Methods to examine the mechanical properties in a macro scale are well-known and well in use, e.g., thermal mechanical analysis (TMA) and dynamic mechanical analysis (DMA). , But in recent years material characterization in the nano scale gained in importance. On one hand applications have been increasingly minimized, and materials are actually implemented in this scale. − On the other hand highly specialized materials are solely obtainable as colloids or thin films. − Therefore, measuring techniques have to be developed in order to characterize materials in the same scale as they are deployed or available. In order to increase the resolution, atomic force microscopy (AFM) , and nanoindenter are applied to this task.…”

Section: Introductionmentioning

confidence: 99%

Nanomechanical Properties of Mechanical Double-Layers: A Novel Semiempirical Analysis

Cappella

Silbernagl

2007

Langmuir

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Force-displacement curves have been acquired with a commercial atomic force microscope on a thin film of poly(n-butyl methacrylate) on glass substrates. The film thickness is nonuniform, ranging in the measured area from 0 to 30 nm, and gives the possibility to survey the so-called "mechanical double-layer" topic, i.e., the influence of the substrate on the mechanical properties of the film in dependence of the film thickness. The stiffness and the deformation for each force-distance curve were determined and related to the film thickness. We were able to estimate the resolution of the film thickness that can be achieved by means of force-distance curves. By exploiting the data acquired in the present and in a previous experiment, a novel semiempirical approach to describe the mechanical properties of a mechanical double-layer is introduced. The mathematical model, with which deformation-force curves can be described, permits to calculate the Young's moduli of film and substrate in agreement with literature values and to determine the film thickness in agreement with the topography.

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“…It is well known that the properties of alkyd resins depend, in great extent, on the type of vegetable oil used [6]; soybean oil, castor oil, linseed oil, tung oil and tall oil the most common vegetable oil being used [3][4][5]. Indeed, the criterion of choice for the raw materials to produce the alkyd resin depends upon the desired properties for the final product, on the availability and on the economic viability.…”

Section: Introductionmentioning

confidence: 99%

“…As well described in some recent reviews available in the literature [3][4][5], there are several protocols to prepare alkyd resins and two different methods are usually used: (i) alcoholysis of the vegetable oil using a polyol followed by esterification of the generated free OH groups with a polyacid; (ii) direct esterification of fatty-acids with polyols and polyacids.…”

Section: Introductionmentioning

confidence: 99%

The use of crude tall oil as feed-stock for alkyd resins

et al. 2008

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The synthesis of modified alkyd resins using a crude tall oil with a content of rosin acids of 39.8 % is described. This material has the composition of fatty acids close to soybean oil, has low cost and is widely available being a forest product industrial residue. The synthetic route includes the reaction of tall oil and maleic anhydride, in the presence of the catalyst (LiOH), followed by polyesterification reaction steps, resulting in an alkyd resin with interesting properties. The acid value (AN) and viscosity were used to follow the reaction, and it appears to be dependent upon the polyalcohol used in the polyesterification step. A period of 15 hours was needed to yield a tack-free coating.

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Advances in the science and technology of paints, inks and related coatings: 2006

Cited by 13 publications

References 92 publications

Characterization and electrical properties of methyl‐2‐hydroxyethyl cellulose doped with erbium nitrate salt

Characterization and electrical properties of methyl‐2‐hydroxyethyl cellulose doped with erbium nitrate salt

Nanomechanical Properties of Mechanical Double-Layers: A Novel Semiempirical Analysis

The use of crude tall oil as feed-stock for alkyd resins

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