Morphology and phase transitions in styrene-butadiene-styrene triblock copolymer grafted with polyhedral oligomeric silsesquioxanes

Daniel B. Drazkowski, Andre Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Symmetrie triblock copolymer of styrene-butadiene-styrene (SBS) was grafted with varying amounts of polyhedral oligomeric silsesquioxane (POSS) with different organic moieties. The POSS, R′R7Si8O 12, was designed to contain a single silane functional group, R', which was used to graft onto the dangling 1,2 butadienes in the midbutadiene block, while the other seven identical organic group, R7, interact with styrene end-blocks at different level. Morphology and phase transitions of these POSS-modified SBS triblock copolymers were investigated using time-resolved small angle X-ray scattering and rheological methods. It was observed for isobutyl moiety POSS (iBu-POSS), appears to show a high affinity to stay in the butadiene domain. While phenyl moiety POSS (Ph-POSS), due to its preference with styrene blocks, the driving force to reduce enthalpy comes at expense of the entropy to remain in butadiene domain, leading to a qualitative change at the interface of phase separated domains.

LanguageEnglish (US)
Title of host publication2007 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2007, Technical Proceedings
Pages56-59
Number of pages4
Volume2
StatePublished - 2007
Event2007 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2007 - Santa Clara, CA, United States
Duration: May 20 2007May 24 2007

Other

Other2007 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2007
CountryUnited States
CitySanta Clara, CA
Period5/20/075/24/07

Profile

Butadiene
Block copolymers
Styrene
Phase transitions
X ray scattering
Silanes
Grafts
Functional groups
Enthalpy
Entropy

Keywords

  • Block copolymers
  • Order-disorder transition
  • Order-Order transition
  • POSS
  • SAXS

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Drazkowski, D. B., & Lee, A. (2007). Morphology and phase transitions in styrene-butadiene-styrene triblock copolymer grafted with polyhedral oligomeric silsesquioxanes. In 2007 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2007, Technical Proceedings (Vol. 2, pp. 56-59)

Morphology and phase transitions in styrene-butadiene-styrene triblock copolymer grafted with polyhedral oligomeric silsesquioxanes. / Drazkowski, Daniel B.; Lee, Andre.

2007 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2007, Technical Proceedings. Vol. 2 2007. p. 56-59.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Drazkowski, DB & Lee, A 2007, Morphology and phase transitions in styrene-butadiene-styrene triblock copolymer grafted with polyhedral oligomeric silsesquioxanes. in 2007 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2007, Technical Proceedings. vol. 2, pp. 56-59, 2007 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2007, Santa Clara, CA, United States, 5/20/07.
Drazkowski DB, Lee A. Morphology and phase transitions in styrene-butadiene-styrene triblock copolymer grafted with polyhedral oligomeric silsesquioxanes. In 2007 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2007, Technical Proceedings. Vol. 2. 2007. p. 56-59.
Drazkowski, Daniel B. ; Lee, Andre. / Morphology and phase transitions in styrene-butadiene-styrene triblock copolymer grafted with polyhedral oligomeric silsesquioxanes. 2007 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2007, Technical Proceedings. Vol. 2 2007. pp. 56-59
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