Equilibrium and non-equilibrium states in the compatibilization of PS/PB blends by means of styrene-butadiene block copolymers

• Autorzy: Hlavatá D. , Horák Z. , Hromádková J.
• Konferencja: Modyfikacja polimerów. 15 Konferencja naukowa. 19-21.09.2001 ; Świeradów Zdrój, Polska
• Języki publikacji: EN

Abstrakty

EN

Localization of styrene-butadiene block copolymers (BC) in both quenched and slowly cooled polystyrene (PS)/polybutadiene (PB) (4/1) blends was studied by means of small-angle X-ray scattering and transmission electron microscopy. Two types of BCs were used: (a) molecular weight of the styrene blocks is 10 000, i.e. below the critical molecular weight of styrene necessary for the entanglement formation (-18 000), (b) molecular weight of the styrene blocks is 40 000, i.e. it sufficiently exceeds this value. It has been shown that both types of the BCs used are in quickly cooled samples moleculary dispersed at the interface with an exception of 40S-60B-40S-60B-40S. In slowly cooled samples with addition of BCs with "short" styrene blocks, these BCs are released from the PS/PB interface, in contrast to the BCs having "long" styrene blocks.

Słowa kluczowe

EN

polymer blends; polystyrene; polybutadiene; block copolymers; small-angle X-ray scattering; tranmission electron microscopy

PL

mieszanka polimerów; polistyren; polibutadien; polimery blokowe

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Prace Naukowe Instytutu Technologii Organicznej i Tworzyw Sztucznych Politechniki Wrocławskiej. Konferencje
• Rocznik: 2001
• Tom: Vol. 50, nr 23
• Strony: 327--330
• Opis fizyczny: Bibliogr. 7 poz., il.

Twórcy

autor

Hlavatá D.

autor

Horák Z.

autor

Hromádková J.

• Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq.2, 162 06 Prague 6