Polyhedral oligomeric butyl stannoxane cages (Sn-POSS) as oxidation-activated linear repairing units or crosslinking nano-building blocks, depending on structure of the polymer matrix
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F17%3A00475150" target="_blank" >RIV/61389013:_____/17:00475150 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.polymdegradstab.2017.05.019" target="_blank" >http://dx.doi.org/10.1016/j.polymdegradstab.2017.05.019</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.polymdegradstab.2017.05.019" target="_blank" >10.1016/j.polymdegradstab.2017.05.019</a>
Alternative languages
Result language
angličtina
Original language name
Polyhedral oligomeric butyl stannoxane cages (Sn-POSS) as oxidation-activated linear repairing units or crosslinking nano-building blocks, depending on structure of the polymer matrix
Original language description
The chemically active heavier POSS homolog, the n-butylstannoxane dodacamer cage, shows unusual stabilizing properties during an oxidizing treatment of organic-inorganic hybrid polymer materials, into which it is incorporated as nano-building block. In this work, we dispersed Sn_POSS in several matrixes, which mainly had all-carbon backbones (based on polystyrene, polyacrylates and polyethers). Sn_POSS concentration was varied, and it was incorporated either as non-functional cage (blending), or via covalent bonding as a large co-monomer. The stannoxane cages' reactivity in the different matrixes was compared, and the authors propose matrix-dependent mechanisms of the stabilizing effect of Sn_POSS, which make possible to predict the behavior of this cage in different polymers, if their degradation mechanism and eventual reactivity of pendant groups can be estimated. Under oxidizing conditions, the studied matrixes yielded either pendant radicals on (at first) intact chains, or terminal radicals on ends of fragmented chains, depending on the exact polymer structure. The stannoxane cages, if present, subsequently underwent either crosslinking, or chain-repair reactions (fragmented chains re-connection) with the radical sites of the matrix. Another reaction type, which yielded additional crosslinking in the hybrids, was observed in case that the polymer matrix contained suitable pendant functional groups, which were able to react with Sn_POSS after activation either by heat or by oxidation.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
<a href="/en/project/GA17-05007S" target="_blank" >GA17-05007S: Interplay between chemical and plasmon-induced processes in plasmonic metal nanoparticles-molecules hybrid systems</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Polymer Degradation and Stability
ISSN
0141-3910
e-ISSN
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Volume of the periodical
142
Issue of the periodical within the volume
August
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
20
Pages from-to
1-20
UT code for WoS article
000408183300001
EID of the result in the Scopus database
2-s2.0-85020036460