Impact of Molecular Architecture on Dynamics of Miktoarm
Star Copolymers
Version 2 2018-07-13, 17:57
Version 1 2018-07-13, 17:48
Posted on 2018-07-13 - 17:57
Broadband dielectric spectroscopy
(BDS) is used to probe the chain and segmental dynamics of A2B2 and AB2 miktoarm star copolymers based on
polystyrene (PS, A block) and polyisoprene (PI, B block) that display
lamellar morphologies as determined using small-angle X-ray scattering
(SAXS). While no changes in the distribution of PI segmental relaxation
times are observed with variation of the molecular architecture, an
unexpected increase in the normalized PI chain relaxation intensity
is realized for AB2 miktoarm star copolymers as well as
a change in the distribution of chain relaxation rates as compared
to A2B2 and AB diblock copolymer systems. This
result is attributed to asymmetry in the molecular architecture near
the junction point, which affects the osmotic constraint of the tethered
PI chains within the interfacial region of the lamellae. The results
highlight the importance of macromolecular design on fundamental chain
dynamics in phase-separated thermoplastic elastomers.
CITE THIS COLLECTION
DataCite
3 Biotech
3D Printing in Medicine
3D Research
3D-Printed Materials and Systems
4OR
AAPG Bulletin
AAPS Open
AAPS PharmSciTech
Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg
ABI Technik (German)
Academic Medicine
Academic Pediatrics
Academic Psychiatry
Academic Questions
Academy of Management Discoveries
Academy of Management Journal
Academy of Management Learning and Education
Academy of Management Perspectives
Academy of Management Proceedings
Academy of Management Review
Kinsey, Thomas; Mapesa, Emmanuel Urandu; Wang, Weiyu; Hong, Kunlun; Mays, Jimmy; Kilbey, S. Michael; et al. (2018). Impact of Molecular Architecture on Dynamics of Miktoarm
Star Copolymers. ACS Publications. Collection. https://doi.org/10.1021/acs.macromol.8b00624
or
Select your citation style and then place your mouse over the citation text to select it.
SHARE
Usage metrics
Read the peer-reviewed publication
AUTHORS (7)
TK
Thomas Kinsey
EM
Emmanuel Urandu Mapesa
WW
Weiyu Wang
KH
Kunlun Hong
JM
Jimmy Mays
SK
S. Michael Kilbey
JS
Joshua Sangoro
KEYWORDS
PI chain relaxation intensityMiktoarm Star Copolymers Broadband dielectric spectroscopychain relaxation ratesPSjunction pointdisplay lamellar morphologies2 B 2relaxation timesSAXSMolecular ArchitectureBDSB blockAB diblock copolymer systemschain dynamicsAB 2 miktoarm star copolymersPI chainssmall-angle X-ray