Self-assembled structures in d8-polystyreneblock- polyisoprene/polystyrene blends in the weak segregation regime: SAXS and TEM study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F09%3A00326760" target="_blank" >RIV/61389013:_____/09:00326760 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Self-assembled structures in d8-polystyreneblock- polyisoprene/polystyrene blends in the weak segregation regime: SAXS and TEM study

Popis výsledku v původním jazyce

This paper reports an investigation of the microphase-separated morphology in blends of d-PS ?PI with homo-PS in the weak segregation regime. The parameter rM = MH/MC (where MH and MC are the weight-average molecular weights of the homopolymer and corresponding block copolymer chain) was selected to encompass all possible types of mutual homopolymer/block copolymer sizes. The PS block chains behave as a wet brush for rM < 1 The domain spacing D increases systematically with increasing concentration of homopolymer wP and increasing rM regardless of the implemented specific morphology, but the slope of the periodicity D versus wP relation is smaller than in the intermediate and strong segregation regimes. The parameters rM and 3/2N (where is the Flory-Huggins parameter and N the number of segments per chain) characterize the slope of the D versus wP relation in the weak and intermediate segregation regimes.

Název v anglickém jazyce

Self-assembled structures in d8-polystyreneblock- polyisoprene/polystyrene blends in the weak segregation regime: SAXS and TEM study

Popis výsledku anglicky

This paper reports an investigation of the microphase-separated morphology in blends of d-PS ?PI with homo-PS in the weak segregation regime. The parameter rM = MH/MC (where MH and MC are the weight-average molecular weights of the homopolymer and corresponding block copolymer chain) was selected to encompass all possible types of mutual homopolymer/block copolymer sizes. The PS block chains behave as a wet brush for rM < 1 The domain spacing D increases systematically with increasing concentration of homopolymer wP and increasing rM regardless of the implemented specific morphology, but the slope of the periodicity D versus wP relation is smaller than in the intermediate and strong segregation regimes. The parameters rM and 3/2N (where is the Flory-Huggins parameter and N the number of segments per chain) characterize the slope of the D versus wP relation in the weak and intermediate segregation regimes.

Druh

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

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

Polymer International

ISSN

0959-8103

e-ISSN

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Svazek periodika

58

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

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Kód UT WoS článku

000267728100007

EID výsledku v databázi Scopus

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