Effect of temperature on self-assembly of amphiphilic block-gradient copolymers of styrene and acrylic acid

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F15%3A00442233" target="_blank" >RIV/61389013:_____/15:00442233 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/masy.201400174" target="_blank" >http://dx.doi.org/10.1002/masy.201400174</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/masy.201400174" target="_blank" >10.1002/masy.201400174</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of temperature on self-assembly of amphiphilic block-gradient copolymers of styrene and acrylic acid

Popis výsledku v původním jazyce

The effect of temperature on self-assembly of a novel type of amphiphilic ionic copolymers comprising a hydrophilic poly(acrylic acid) PAA block and an amphiphilic poly(acrylic acid)-grad-poly(styrene) PAA-grad-PS copolymer block has been studied by Small Angle Neutron and Dynamic Light Scattering (SANS, DLS). The polymers have been synthesized using direct Nitroxide-Mediated Polymerization (NMP) as described elsewhere and proved to be capable of formation of the equilibrium (dynamic) micelles responsive to variations in pH and ionic strength of the solution. We have demonstrated that an increase in temperature from 20 to 80?°C has almost no influence if the assembly occurs at pH similar to 6 in a wide range of salt concentration. Under these conditions stable micelle aggregates are formed. At pH similar to 6.9 virtually no aggregation occurs at any temperature in salt-free solution, whereas at 1?M salt concentration we observed an appearance of the correlation peak in the scattering c

Název v anglickém jazyce

Effect of temperature on self-assembly of amphiphilic block-gradient copolymers of styrene and acrylic acid

Popis výsledku anglicky

The effect of temperature on self-assembly of a novel type of amphiphilic ionic copolymers comprising a hydrophilic poly(acrylic acid) PAA block and an amphiphilic poly(acrylic acid)-grad-poly(styrene) PAA-grad-PS copolymer block has been studied by Small Angle Neutron and Dynamic Light Scattering (SANS, DLS). The polymers have been synthesized using direct Nitroxide-Mediated Polymerization (NMP) as described elsewhere and proved to be capable of formation of the equilibrium (dynamic) micelles responsive to variations in pH and ionic strength of the solution. We have demonstrated that an increase in temperature from 20 to 80?°C has almost no influence if the assembly occurs at pH similar to 6 in a wide range of salt concentration. Under these conditions stable micelle aggregates are formed. At pH similar to 6.9 virtually no aggregation occurs at any temperature in salt-free solution, whereas at 1?M salt concentration we observed an appearance of the correlation peak in the scattering c

Druh

D - Stať ve sborníku

CEP obor

CC - Organická chemie

OECD FORD obor

—

Projekt

<a href="/cs/project/LH14292" target="_blank" >LH14292: Vzájemná interakce citlivosti polymerů ke změnám teploty a pH: jak ji využít při tvorbě nanočástic pro biolékařské aplikace?</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

Macromolecular Symposia

ISBN

—

ISSN

1022-1360

e-ISSN

—

Počet stran výsledku

8

Strana od-do

25-32

Název nakladatele

WILEY-VCH Verlag GmbH

Místo vydání

Weinheim

Místo konání akce

St. Petersburg

Datum konání akce

2. 6. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000349819900004