Structure of liquid and glassy methanol confined in cylindrical pores

Details Structure of liquid and glassy methanol confined in cylindrical pores Structure of liquid and glassy methanol confined in cylindrical pores

2004-03-12

arxiv.org/abs/cond-mat/0403325v1

Physics

Condensed Matter

Soft Condensed Matter

version March 12 2004

Scientific paper

10.1063/1.1762872

We present a neutron scattering analysis of the density and the static structure factor of confined methanol at various temperatures. Confinement is performed in the cylindrical pores of MCM-41 silicates with pore diameters D=24 angstrom and D=35 angstrom. A change of the thermal expansivity of confined methanol at low temperature is the signature of a glass transition, which occurs at higher temperature for the smallest pore. This is an evidence of a surface induced slowing down of the dynamics of the fluid. The structure factor presents a systematic evolution with the pore diameter, which has been analyzed in terms of excluded volume effects and fluid-matrix cross-correlation. Conversely to the case of Van der Waals fluids, it shows that stronger fluid-matrix correlations must be invoked most probably in relation with the H-bonding character of both methanol and silicate surface.

Affiliated with

Also associated with

No associations

Rating

Structure of liquid and glassy methanol confined in cylindrical pores does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Structure of liquid and glassy methanol confined in cylindrical pores, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Structure of liquid and glassy methanol confined in cylindrical pores will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-161291