ABA and BAB Triblock Copolymers Based on 2-Methyl-2-oxazoline and 2-n-Propyl-2-oxazoline: Synthesis and Thermoresponsive Behavior in Water

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F17%3A63516640" target="_blank" >RIV/70883521:28610/17:63516640 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/macp.201700031" target="_blank" >http://dx.doi.org/10.1002/macp.201700031</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/macp.201700031" target="_blank" >10.1002/macp.201700031</a>

Jazyk výsledku

angličtina

Název v původním jazyce

ABA and BAB Triblock Copolymers Based on 2-Methyl-2-oxazoline and 2-n-Propyl-2-oxazoline: Synthesis and Thermoresponsive Behavior in Water

Popis výsledku v původním jazyce

Inspired by the well-known amphiphilic block copolymer platform known as Pluronics or poloxamers, a small library of ABA and BAB triblock copolymers comprising hydrophilic 2-methyl-2-oxazoline (A) and thermoresponsive 2-n-propyl-2-oxazoline (B) is synthesized. These novel copolymers exhibit temperature-induced self-assembly in aqueous solution. The formation and size of aggregates depend on the polymer structure, temperature, and concentration. The BAB copolymers tend to agglomerate in water, with the cloud point temperature depending on the length of poly(2-n-propyl-2-oxazoline) chain. On the other hand, ABA copolymers form smaller aggregates with hydrodynamic radius from 25 to 150 nm. The dependence of viscosity and viscoelastic properties on the temperature is also studied. While several Pluronic block copolymers are known to form thermoreversible hydrogels in the concentration range 20–30 wt%, thermogelation is not observed for any of the investigated poly(2-oxazoline)s at the investigated temperature range from 10 to 50 °C. (Figure presented.).

Název v anglickém jazyce

ABA and BAB Triblock Copolymers Based on 2-Methyl-2-oxazoline and 2-n-Propyl-2-oxazoline: Synthesis and Thermoresponsive Behavior in Water

Popis výsledku anglicky

Inspired by the well-known amphiphilic block copolymer platform known as Pluronics or poloxamers, a small library of ABA and BAB triblock copolymers comprising hydrophilic 2-methyl-2-oxazoline (A) and thermoresponsive 2-n-propyl-2-oxazoline (B) is synthesized. These novel copolymers exhibit temperature-induced self-assembly in aqueous solution. The formation and size of aggregates depend on the polymer structure, temperature, and concentration. The BAB copolymers tend to agglomerate in water, with the cloud point temperature depending on the length of poly(2-n-propyl-2-oxazoline) chain. On the other hand, ABA copolymers form smaller aggregates with hydrodynamic radius from 25 to 150 nm. The dependence of viscosity and viscoelastic properties on the temperature is also studied. While several Pluronic block copolymers are known to form thermoreversible hydrogels in the concentration range 20–30 wt%, thermogelation is not observed for any of the investigated poly(2-oxazoline)s at the investigated temperature range from 10 to 50 °C. (Figure presented.).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

<a href="/cs/project/LO1504" target="_blank" >LO1504: Centrum polymerních systémů plus</a><br>

Návaznosti

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

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Macromolecular chemistry and Physics

ISSN

1022-1352

e-ISSN

—

Svazek periodika

218

Číslo periodika v rámci svazku

13

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

12

Strana od-do

—

Kód UT WoS článku

000404903000011

EID výsledku v databázi Scopus

2-s2.0-85018806665