2011
DOI: 10.1021/jp106699u
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Characterizing Mesh Size Distributions (MSDs) in Thermosetting Materials Using a High-Pressure System

Abstract: The thermoporosimetry method was adapted to determine the mesh size distribution of an acrylate thermoset clearcoat. This goal was achieved by increasing the solvent rate transfer by increasing the pressure and temperature. A comparison of the results obtained using this approach with those obtained by DMA (dynamic mechanical analysis) underlined the accuracy of thermoporosimetry in characterizing the macromolecular architecture of thermosets. The thermoporosimetry method was also used to analyze the effects o… Show more

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Cited by 3 publications
(5 citation statements)
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“…The relationship between E * and the cross-linking density may be extrapolated for sufficiently thick films and small values of d . For a cross-linked polymer, the cross-linking density influences the modulus of the film, as described in eq where M c is the number-average molar mass of the chain lengths between cross-links, ρ is the bulk density of polymer, T is temperature, and R is the gas constant. , As M c decreases, E * increases, which indicates that the polymer becomes stiffer as the cross-link density increases.…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…The relationship between E * and the cross-linking density may be extrapolated for sufficiently thick films and small values of d . For a cross-linked polymer, the cross-linking density influences the modulus of the film, as described in eq where M c is the number-average molar mass of the chain lengths between cross-links, ρ is the bulk density of polymer, T is temperature, and R is the gas constant. , As M c decreases, E * increases, which indicates that the polymer becomes stiffer as the cross-link density increases.…”
Section: Methodsmentioning
confidence: 99%
“…where M c is the number-average molar mass of the chain lengths between cross-links, ρ is the bulk density of polymer, T is temperature, and R is the gas constant. 37,38 As M c decreases, E* increases, which indicates that the polymer becomes stiffer as the cross-link density increases.…”
Section: ■ Introductionmentioning
confidence: 99%
“…The most common techniques to study network structures have been by far: swelling measurements [24][25][26], rheological analysis [8] and dynamic mechanical analysis [27] among others. From these methods, it is possible to obtain data such as number of moles of crosslinks per unit of volume and the average molar mass between junctions.…”
Section: Network Structure (Thermoporosimetry)mentioning
confidence: 99%
“…k and b are calibration constants that depend on the instrument sensitivity, sample mass and heating rate [27]. Due to the pore size independence of these constants, their knowledge is not crucial to express the size distribution of the studied systems.…”
Section: Network Structure (Thermoporosimetry)mentioning
confidence: 99%
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