TY - GEN
T1 - Viscoelasticity of polymer/oligomer athermal blends
AU - Zheng, Wei
AU - McKenna, Gregory B.
AU - Simon, Sindee L.
PY - 2010
Y1 - 2010
N2 - The viscoelastic properties of poly(α-methyl styrene), its hexamer, and their athermal blends at various concentrations are studied. Master curves for the dynamic shear responses, G' and G", are successfully constructed for both the pure materials and the blends, indicating the validity of the time-temperature superposition principle. The shift factors used to construct the master curves show weaker dependence in the blends. The segmental dynamics appear unchanged by concentration, which is different from the calorimetric studies where mixtures show obviously broadened glass transitions and depressed enthalpy overshoots.
AB - The viscoelastic properties of poly(α-methyl styrene), its hexamer, and their athermal blends at various concentrations are studied. Master curves for the dynamic shear responses, G' and G", are successfully constructed for both the pure materials and the blends, indicating the validity of the time-temperature superposition principle. The shift factors used to construct the master curves show weaker dependence in the blends. The segmental dynamics appear unchanged by concentration, which is different from the calorimetric studies where mixtures show obviously broadened glass transitions and depressed enthalpy overshoots.
UR - http://www.scopus.com/inward/record.url?scp=77956904901&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:77956904901
SN - 9781617386602
T3 - Annual Technical Conference - ANTEC, Conference Proceedings
SP - 1901
EP - 1904
BT - 68th Annual Technical Conference of the Society of Plastics Engineers 2010, ANTEC 2010
T2 - 68th Annual Technical Conference of the Society of Plastics Engineers 2010, ANTEC 2010
Y2 - 16 May 2010 through 20 May 2010
ER -