Biodegradable polyester nanocomposites: the effect of structure on mechanical and degradation behavior

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F11%3A00366920" target="_blank" >RIV/61389013:_____/11:00366920 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.eurpolymj.2011.09.005" target="_blank" >http://dx.doi.org/10.1016/j.eurpolymj.2011.09.005</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.eurpolymj.2011.09.005" target="_blank" >10.1016/j.eurpolymj.2011.09.005</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Biodegradable polyester nanocomposites: the effect of structure on mechanical and degradation behavior

Popis výsledku v původním jazyce

The study describes the effect of the layered silicate content and its dispersion on the mechanical and degradation behavior of poly(.epsilon.-caprolactone) (PCL) nanocomposites. Two nanocomposite systems were compared: intercalated and exfoliated nanocomposites. They were prepared by melt-compounding of PCL with in situ polymerized silicate masterbatches or an organophilized montmorillonite. It has been shown that stiffness enhancement is predominantly caused by the dispersed inorganic phase but it isalso supported by the contribution of the low-molecular-weight PCL fraction, which comes from the masterbatch, to the total degree of crystallinity. In contrast, the increase in the yield stress is driven mainly by the present low-molecular-weight PCL fraction with higher crystallinity. The degradation behavior reflects both the presence of the layered silicate as well as the low-molecular-weight PCL fraction. Their presence accelerates the degradation in the phosphate buffer at 37 °C.

Název v anglickém jazyce

Biodegradable polyester nanocomposites: the effect of structure on mechanical and degradation behavior

Popis výsledku anglicky

The study describes the effect of the layered silicate content and its dispersion on the mechanical and degradation behavior of poly(.epsilon.-caprolactone) (PCL) nanocomposites. Two nanocomposite systems were compared: intercalated and exfoliated nanocomposites. They were prepared by melt-compounding of PCL with in situ polymerized silicate masterbatches or an organophilized montmorillonite. It has been shown that stiffness enhancement is predominantly caused by the dispersed inorganic phase but it isalso supported by the contribution of the low-molecular-weight PCL fraction, which comes from the masterbatch, to the total degree of crystallinity. In contrast, the increase in the yield stress is driven mainly by the present low-molecular-weight PCL fraction with higher crystallinity. The degradation behavior reflects both the presence of the layered silicate as well as the low-molecular-weight PCL fraction. Their presence accelerates the degradation in the phosphate buffer at 37 °C.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JI - Kompositní materiály

OECD FORD obor

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Projekt

<a href="/cs/project/KJB200500601" target="_blank" >KJB200500601: Mikromechanismy a nanomechanismy deformace a porušování polymerních nanokompozitů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

European Polymer Journal

ISSN

0014-3057

e-ISSN

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Svazek periodika

47

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

2197-2207

Kód UT WoS článku

000298204500003

EID výsledku v databázi Scopus

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