Synthesis and characterization of carbosilane dendrimer-sodium montmorillonite clay nanocomposites. Experimental and theoretical studies

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13440%2F16%3A43887644" target="_blank" >RIV/44555601:13440/16:43887644 - isvavai.cz</a>

Alternative codes found

RIV/67985858:_____/16:00467743 RIV/61989592:15310/16:33161587 RIV/00216275:25310/16:39901864

Result on the web

<a href="http://dx.doi.org/10.1039/c6ra04442e" target="_blank" >http://dx.doi.org/10.1039/c6ra04442e</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c6ra04442e" target="_blank" >10.1039/c6ra04442e</a>

Result language

angličtina

Original language name

Synthesis and characterization of carbosilane dendrimer-sodium montmorillonite clay nanocomposites. Experimental and theoretical studies

Original language description

Novel organic/inorganic hybridmaterials with carbosilane fillerswere developed. New carbosilane dendrimers of the first (Dm1) and second (Dm2) generations bearing four and eight cationic ammonium groups on their periphery were synthesized first. Their structure was elucidated by NMR spectroscopy and ESI-HRMS whereas their thermal stability was confirmed by TGA. Both dendrimers were used as organic components in the preparation of organoclays. A series of nanocomposites Dm1Mt and Dm2Mt with varied contents of dendrimers were prepared and characterized by a wide variety of analytical techniques. The analytical data show that the structure of organoclays and the ability of dendrimers to effectively interact with montmorillonite are strongly affected by their generation. Both species Dm1 and Dm2 intercalated into the interlayer space of montmorillonite increase correspondingly the basal spacing of Mt. In contrast to Dm2, increased loadings of Dm1 in suspension during the intercalation process have a negligible effect on dspacing in the studied concentration range, as confirmed by XRD analysis. Besides unmodified Mt we also studied the interactions of dendrimers with plasma treated Mt and the results are presented. Computer modelling based mainly on Molecular Dynamics has shown the non-linear dependence of the d-spacing on the amount of dendrimers in the interlayer space within the studied dendrimer/montmorillonite mass ratio interval. The filling capacity of plasma unmodified montmorillonite with respect to both dendrimers was estimated using a combination of experimental and theoretical results.

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JI - Composite materials

OECD FORD branch

—

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

RSC Advances

ISSN

2046-2069

e-ISSN

—

Volume of the periodical

2016

Issue of the periodical within the volume

6

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

43356-43366

UT code for WoS article

000375611100069

EID of the result in the Scopus database

—