Salt-induced changes in triblock polyampholyte hydrogels: computer simulations and rheological, structural, and dynamic characterization

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F15%3A00451593" target="_blank" >RIV/61389013:_____/15:00451593 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1021/acs.macromol.5b01746" target="_blank" >http://dx.doi.org/10.1021/acs.macromol.5b01746</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.macromol.5b01746" target="_blank" >10.1021/acs.macromol.5b01746</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Salt-induced changes in triblock polyampholyte hydrogels: computer simulations and rheological, structural, and dynamic characterization

Popis výsledku v původním jazyce

We investigate the influence of ionic strength on the structural properties of stimuli-responsive hydrogels from triblock polyampholytes PAA-b-P2VP-b-PAA (PAA and P2VP are negatively charged poly(acrylic acid) and positively charged poly(2-vinylpyridine)). In our previous studies, we found that the transition behavior depends on the charge asymmetry which is controlled by pH and which alters the degree of ionization of the two types of blocks [Dyakonova Macromolecules 2014, 47, 7561]. The same triblockpolyampholyte, but with chemically quaternized P2VP (QP2VP) instead of P2VP as the middle block, is highly positively charged, independently of pH. In the present investigation, PAA-b-P2VP-b-PAA at pH 3 and PAA-b-PQ2VP-b-PAA at pH 5 were chosen to investigate the influence of the ionic strength on the micellar network morphology by adding NaCl at concentrations in the physiological range. Computer simulations of the latter system show that salt addition results in the formation of larger

Název v anglickém jazyce

Salt-induced changes in triblock polyampholyte hydrogels: computer simulations and rheological, structural, and dynamic characterization

Popis výsledku anglicky

We investigate the influence of ionic strength on the structural properties of stimuli-responsive hydrogels from triblock polyampholytes PAA-b-P2VP-b-PAA (PAA and P2VP are negatively charged poly(acrylic acid) and positively charged poly(2-vinylpyridine)). In our previous studies, we found that the transition behavior depends on the charge asymmetry which is controlled by pH and which alters the degree of ionization of the two types of blocks [Dyakonova Macromolecules 2014, 47, 7561]. The same triblockpolyampholyte, but with chemically quaternized P2VP (QP2VP) instead of P2VP as the middle block, is highly positively charged, independently of pH. In the present investigation, PAA-b-P2VP-b-PAA at pH 3 and PAA-b-PQ2VP-b-PAA at pH 5 were chosen to investigate the influence of the ionic strength on the micellar network morphology by adding NaCl at concentrations in the physiological range. Computer simulations of the latter system show that salt addition results in the formation of larger

Druh

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

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

—

Projekt

<a href="/cs/project/GC15-10527J" target="_blank" >GC15-10527J: Sférický „kůň ve vakuu“, anebo použitelné micely? Chování a tvar nanočástic – protirakovinných nosičů léčiv ve skutečném prostředí krve.</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 periodika

Macromolecules

ISSN

0024-9297

e-ISSN

—

Svazek periodika

48

Číslo periodika v rámci svazku

22

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

8177-8189

Kód UT WoS článku

000365463900014

EID výsledku v databázi Scopus

2-s2.0-84948162813