Preparation of UV-curable intercalated/exfoliated epoxide/acrylateclays nanocomposite resins

Wang, Yu-Young; Hsieh, Tsung−Eong

doi:10.1007/s10853-006-0623-5

Cited by 16 publications

(6 citation statements)

References 24 publications

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“…In the hybrid photopolymers, acrylate monomers and silicone–epoxy resins polymerize through free radicals and cationic polymerization mechanism, respectively. This is a very common way to generate interpenetrating polymer network (IPN) structure . IPN is a special type of polymer blends in which each kind of polymer forms a network .…”

Section: Resultsmentioning

confidence: 99%

Silicone–Epoxy‐Based Hybrid Photopolymers for 3D Printing

Zhao

et al. 2018

Macro Chemistry & Physics

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In the present research, a type of cycloaliphatic silicone–epoxy resin is synthesized and then compounded with acrylates as well as photoinitiators to obtain hybrid photopolymers. The photocuring rate of the hybrid photopolymers, the morphology, thermal and mechanical properties of the cured samples with different silicone–epoxy/acrylate ratios are studied in detail. Scanning electron microscopy images prove that interpenetrating polymer network structure is formed. To improve the mechanical properties, diglycidyl ether of bisphenol A is added and finally a type of hybrid photopolymer suitable for stereolithography 3D printing is obtained. Fourier‐transform infrared spectroscopy and photo‐differential scanning calorimeter measurements show that the hybrid photopolymer has a high curing rate, while thermal property tests prove that the cured sample has high thermal stability. Mechanical property tests show that the cured samples have a tensile strength of 40.3 MPa with a break elongation of 6.7%. The objects printed with the hybrid photopolymer exhibit high resolution and dimension accuracy.

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Section: Resultsmentioning

confidence: 99%

Silicone–Epoxy‐Based Hybrid Photopolymers for 3D Printing

Zhao

et al. 2018

Macro Chemistry & Physics

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“…Thermogravimetric analysis was used to estimate the quantity of surfactants incorporated in monomorillonite clay and consequently the efficiency of cation exchange reaction. On the basis of CEC value, the degree of modification (X) was calculated according to the following equation:

X = \frac{true[residual weight before modification true] - [residual weight after modification]}{molar weight of surfacant} . \frac{1000}{C E C} . 100

…”

Section: Resultsmentioning

confidence: 99%

Synergistic effect of organoclay fillers based on fluorinated surfmers for preparation of polystyrene nanocomposites

Benbayer

Besbes

Givenchy

et al. 2015

J of Applied Polymer Sci

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International audienceNovel fluorinated reactive surfactants were used for the organic modification of monmorillonite clays. These organoclays were used for the preparation of polystyrene−clay nanocomposites by in-situ free radical polymerization. Reference systems based on hydrocarbon homologous surfmer and nonpolymerizable surfactants were also used to deduce the effect of the fluorine moiety and the polymerizable function on the morphology and thermal stability of the prepared nanocomposites. Different structural parameters of the surfactants were investigated and modulated for the clay modification including: the nature of surfactant (surfmer/classical surfactant, fluorinated, or hydrocarbonated), the length of the fluorinated chain as well as the length of the hydrocarbon spacers linking the ammonium head to the fluorine chain or the polymerizable acrylic function. Wide angle-X-ray scattering (WAXD), thermogravimetric analysis (TGA), and electronic microcopies (TEM and SEM) were used to establish a structure-morphology, thermal properties relationships, and to highlight the key parameters governing the exfoliation process

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“…As already shown by the FT-IR analysis, the fluorinated clay minerals contain nearly no water, while the pristine montmorillonite has a water content of about 6.5 wt%. It is possible to estimate the degree of modification achieved according to the following formula: {[(residual weight before modification) À (residual weight after modification)] Ä (molar weight of surfactant)} Â (1000 Ä CEC) Â 100 [21]; in the case of the Masurf the value is 38% given the length of the R f chain as 18 C atoms, while in the case of the PFPEsurf about 34% of modification was obtained.…”

Section: Modification Of the Sodium Montmorillonitementioning

confidence: 99%

“…There are different ways to estimate and predict the compatibility of two phases using thermodynamics: a simple approach is based on the solubility parameters d and was recently applied to UVcured composites [21]. The solubility parameter is the square root of the cohesive energy density (energy of vaporization per unit volume): calculations based on group contributions are proposed for polymers as it is not possible to obtain directly the energy of vaporization per unit volume.…”

Section: Preparation Of Coatingsmentioning

confidence: 99%