Microcellular Foaming of Layered Double Hydroxide-Polymer Nanocomposites (Record no. 47519)

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control field MX-MdCICY
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20250625153920.0
040 ## - CATALOGING SOURCE
Transcribing agency CICY
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-13319
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245 10 - TITLE STATEMENT
Title Microcellular Foaming of Layered Double Hydroxide-Polymer Nanocomposites
490 0# - SERIES STATEMENT
Volume/sequential designation Ind. Eng. Chem. Res., 50(9), p.5239-5247, 2011
520 3# - SUMMARY, ETC.
Summary, etc. Microcellular foams of polystyrene (PS), poly(styrene-co-acrylonitrile)(SAN), and poly(methyl methacrylate)(PMMA)having organically modified layered double hydroxides (LDH)were prepared using a high-pressure CO2 dissolution foaming process and characterized both structurally and thermo-mechanically. The saturation concentration of CO2 was found to increase with the incorporation of LDH nanoparticles into the PMMA, while the opposite effect was observed in the PS and SAN nanocomposites with respect to the pure polymers. The CO2 desorption diffusion coefficient substantially decreased in the nanocomposites comparatively to the respective pure polymers. The incorporation of hydrotalcite (HT)into the polymers and subsequent foaming resulted in foams with finer and more isotropic cellular structures, related to a cell nucleation effect promoted by the particles. No significant differences were found among the several foamed nanocomposites. Both PS and SAN nanocomposite foams displayed higher glass transition temperatures than the respective unfilled ones, related to a higher amount of residual CO2 in the last, favoring plasticization. The contrary effect was observed inPMMA, attributed to a combined plasticizing effect promoted by the higher affinity of PMMA for CO2 and greater interaction with the organically modified HT platelets. Although no significant differences were found among the several nanocomposite foams and respective unfilled counterparts, the incorporation of HT limited the reduction observed in the specific storage moduli with foaming, related to a finer cellular structure induced by the HT particles.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Martínez, A.B.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Realinho, V.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Antunes, M.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Maspoch, M.L.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Velasco, J.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1D99obBg0g0-R6vSpEFhUCs_gPZRGpwwn/view?usp=drivesdk">https://drive.google.com/file/d/1D99obBg0g0-R6vSpEFhUCs_gPZRGpwwn/view?usp=drivesdk</a>
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Source of classification or shelving scheme Clasificación local
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-13319 25.06.2025 25.06.2025 Documentos solicitados