The effect of long-term natural aging on the iPB-1 structure and the II – I phase transformation rate

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F21%3A63526194" target="_blank" >RIV/70883521:28610/21:63526194 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/70883521:28110/21:63526194 RIV/61989592:15310/21:73602300

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0141391020303669" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0141391020303669</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.polymdegradstab.2020.109437" target="_blank" >10.1016/j.polymdegradstab.2020.109437</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The effect of long-term natural aging on the iPB-1 structure and the II – I phase transformation rate

Popis výsledku v původním jazyce

The long-term natural aging of isotactic polybutene-1 samples of different molecular weight has shown that the transformation rate from the initial phase II to the stable phase I significantly decreased after natural aging, ranging from 0 to 17 years. It was found that the total crystallinity decreased with aging time and a small amount of phase II remained untransformed for at least 17 years. The transformation rate of a lower molecular weight sample, DP 0400, was higher than the PB 0110 sample, even after repeated polymer melting of aged samples and their new melt crystallization. The major phenomenon of the iPB-1 aging is the change in a ratio of methyl/methylene functional groups; possibly because of a side chain splitting that reduces the geometric regularity of the molecular chain and consecutively slows down the proceeding phase transformation.

Název v anglickém jazyce

The effect of long-term natural aging on the iPB-1 structure and the II – I phase transformation rate

Popis výsledku anglicky

The long-term natural aging of isotactic polybutene-1 samples of different molecular weight has shown that the transformation rate from the initial phase II to the stable phase I significantly decreased after natural aging, ranging from 0 to 17 years. It was found that the total crystallinity decreased with aging time and a small amount of phase II remained untransformed for at least 17 years. The transformation rate of a lower molecular weight sample, DP 0400, was higher than the PB 0110 sample, even after repeated polymer melting of aged samples and their new melt crystallization. The major phenomenon of the iPB-1 aging is the change in a ratio of methyl/methylene functional groups; possibly because of a side chain splitting that reduces the geometric regularity of the molecular chain and consecutively slows down the proceeding phase transformation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

<a href="/cs/project/LTAUSA19066" target="_blank" >LTAUSA19066: Studium polymerních memristorů založených na metakrylátových polymerech s karbazolovými bočními skupinami</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Polymer Degradation and Stability

ISSN

0141-3910

e-ISSN

—

Svazek periodika

183

Číslo periodika v rámci svazku

Neuveden

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

—

Kód UT WoS článku

000614146200033

EID výsledku v databázi Scopus

2-s2.0-85097105381