Search Results - "MCKENNA, G. B"

Rheological Measurements of the Thermoviscoelastic Response of Ultrathin Polymer Films by O'Connell, P. A, McKenna, G. B

“…Measurement of the thermoviscoelastic behavior of glass-forming liquids in the nanometer size range offers the possibility of increased understanding of the…”
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The measurement of mechanical properties of glycerol, m-toluidine, and sucrose benzoate under consideration of corrected rheometer compliance: an in-depth study and review by Hutcheson, S A, McKenna, G B

“…Determination of the mechanical response of materials can be fraught with error if rheometer compliance is not properly taken into account. The resulting…”
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Nanosphere embedding into polymer surfaces : A viscoelastic contact mechanics analysis by HUTCHESON, S. A, MCKENNA, G. B

“…Teichroeb and Forrest [Phys. Rev. Lett. 91, 016104 (2003)] image gold nanosphere embedment into a polystyrene surface and imply the existence of a liquid…”
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Dynamic shear modulus of glycerol: corrections due to instrument compliance by Schröter, K, Hutcheson, S A, Shi, X, Mandanici, A, McKenna, G B

“…A recent article by Shi et al. [J. Chem. Phys.123, 174507 (2005)] reports results from mechanical measurements on three simple inorganic glass formers:…”
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Dramatic stiffening of ultrathin polymer films in the rubbery regime by O'CONNELL, P. A, MCKENNA, G. B

“…Recently, we (P.A. O'Connell, G.B. McKenna, Science 307, 1760 (2005)) introduced a novel nano-bubble inflation method to measure the absolute creep compliance…”
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Large deformation response of polycarbonate: Time-temperature, time-aging time, and time-strain superposition by O'Connell, P. A., McKenna, G. B.

“…Data are presented from tests of the stress relaxation response of a polycarbonate under torsional deformations. Tests were performed on samples over a range…”
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Structural Recovery in a Model Epoxy:  Comparison of Responses after Temperature and Relative Humidity Jumps by Zheng, Y, McKenna, G. B

“…One cause of long-term dimensional changes in glassy polymers is the gradual evolution of the viscoelastic behavior through aging processes in the glassy…”
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Ten (or more) years of dynamics in confinement: Perspectives for 2010 by McKenna, G.B.

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Physical aging of an epoxy subsequent to relative humidity jumps through the glass concentration by Zheng, Y., Priestley, R. D., McKenna, G. B.

“…In our previous work, we showed that the structural recovery responses of an epoxy after relative humidity (RH)‐jumps through the glass concentration have…”
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Commentary on rheology of polymers in narrow gaps by MCKENNA, G. B

“…Without abstract…”
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Rubber modeling using uniaxial test data by Bradley, G. L., Chang, P.C., Mckenna, G. B.

“…Accurate modeling of large rubber deformations is now possible with finite‐element codes. Many of these codes have certain strain‐energy functions built‐in,…”
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Modeling the evolution of the dynamic mechanical properties of a commercial epoxy during cure after gelation by Simon, Sindee L., Mckenna, Gregory B., Sindt, Olivier

“…The cure kinetics for a commercial epoxy have been established and the influence of the degree of cure on the glass transition determined. Time‐temperature and…”
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Comment on The properties of free polymer surfaces and their influence on the glass transition temperature of thin polystyrene films by J.S. Sharp, J.H. Teichroeb and J.A. Forrest by HUTCHESON, S. A, MCKENNA, G. B

“…Sharp, Teichroeb and Forrest [J.S. Sharp, J.H. Teichroeb, J.A. Forrest, Eur. Phys. J. E 15, 473 (2004)] recently published a viscoelastic contact mechanics…”
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Status of our understanding of dynamics in confinement: perspectives from Confit 2003 by McKenna, G B

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A comparison of three different methods for measuring both normal stress differences of viscoelastic liquids in torsional rheometers by Alcoutlabi, Mataz, Baek, S. G., Magda, J. J., Shi, Xiangfu, Hutcheson, S. A., McKenna, G. B.

“…A novel pressure sensor plate (normal stress sensor (NSS) from RheoSense, Inc.) was adapted to an Advanced Rheometrics Expansion System rheometer in order to…”
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A novel nano-bubble inflation method for determining the viscoelastic properties of ultrathin polymer films by O'connell, P. A., McKenna, G. B.

“…We describe a novel experimental technique for measuring the absolute creep compliance of ultrathin polymer films. The method is based on the classical bubble…”
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Finite step rate corrections in stress relaxation experiments: A comparison of two methods by FLORY, A, MCKENNA, G. B

“…The material response after the application of a constant strain rate ramp, followed, at time t1, by a constant strain differs from the response to an ideal…”
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Enthalpy recovery of a glass-forming liquid constrained in a nanoporous matrix: negative pressure effects by Simon, S L, Park, J-Y, McKenna, G B

“…The T(g) of organic liquids confined to nanoporous matrices and that of thin polymer films can decrease dramatically from the bulk value. One possible…”
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The non-linear viscoelastic response of polycarbonate in torsion: An investigation of time-temperature and time-strain superposition by O'CONNELL, P. A, MCKENNA, G. B

“…Data are presented from torsional stress relaxation experiments on a commercial polycarbonate. Tests were performed on samples over a range of torsional…”
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Mechanical response of a simple molecular glass former in the glass transition region by Mandanici, A., Shi, X., Hutcheson, S.A., McKenna, G.B., Cutroni, M., Giambò, S.

“…Dynamic shear modulus measurements have been performed on a simple glass forming liquid, m-toluidine, as a function of frequency at low temperatures, down to…”
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