TY - GEN
T1 - Rheological and morphological characterization of triblock copolymer (PEO-PPO-PEO)-clay gel in aqueous solution
AU - Jun, Jiang
AU - Chunhua, Li
AU - Rafailovich, Miriam H.
AU - Sokolov, Jonathan C.
PY - 2005
Y1 - 2005
N2 - Thermal gelation and structure properties of high concentration triblock copolymer poly (ethylene oxiclc)99-poly(propylene oxidc)69-poly(ethylene oxide)99 (Pluronic F127)-clay aqueous solutions were characterized by Rheological measurements and scanning electron microscopy (SEM). The sol-gel transition temperature, as well as the viscosity of the F127 solution was found to depend both on the concentration of polymer and clay filler. In all cases, Pluronic F127 gels are pseudoplastic, showing the shear-thinning behavior, Above the gel transition, the viscosity of the solutions increased with increasing the clay concentration. The corresponding macrostructure of the gels was studied by lyophilizing thick samples and scanning them with a scanning electron microscope (SEM). A well-ordered network of porosity was observed as a function of polymer concentration and orientation.
AB - Thermal gelation and structure properties of high concentration triblock copolymer poly (ethylene oxiclc)99-poly(propylene oxidc)69-poly(ethylene oxide)99 (Pluronic F127)-clay aqueous solutions were characterized by Rheological measurements and scanning electron microscopy (SEM). The sol-gel transition temperature, as well as the viscosity of the F127 solution was found to depend both on the concentration of polymer and clay filler. In all cases, Pluronic F127 gels are pseudoplastic, showing the shear-thinning behavior, Above the gel transition, the viscosity of the solutions increased with increasing the clay concentration. The corresponding macrostructure of the gels was studied by lyophilizing thick samples and scanning them with a scanning electron microscope (SEM). A well-ordered network of porosity was observed as a function of polymer concentration and orientation.
UR - https://www.scopus.com/pages/publications/34249983149
M3 - Conference contribution
SN - 1558998535
SN - 9781558998537
T3 - Materials Research Society Symposium Proceedings
SP - 55
EP - 59
BT - Mechanical Behavior of Biological and Biomimetic Materials
T2 - 2005 MRS Fall Meeting
Y2 - 28 November 2005 through 2 December 2005
ER -