The glass transition of organic liquids confined to small pores Export

@article{jackson91, abstract = {The glass-transition temperatures, Tg, of organic liquids confined to small pores were studied by differential scanning calorimetry (DSC). The Tg was measured as a function of pore size in controlled pore glasses (CPG) having pore diameters in the range of 40-730 A. The surface of the glass was treated with hexamethyldisilazane to promote wetting by the organic liquids studied (o-terphenyl and benzyl alcohol). Glasses formed in the pores had a lower Tg than in the bulk and the reduction in Tg increased as the pore size decreased. For example, the depression of the glass transition temperature, [Delta]Tg, of benzyl alcohol in 40 A and 85 A pores was 7.2 K and 3.1 K, respectively. The magnitude of [Delta]Tg also depends on the material; e.g. for o-terphenyl in the 85 A pores, [Delta]Tg was 8.8 K versus 3.1 K for benzyl alcohol. In general, it was noted that [Delta]Tg was considerably less than for the depression of the crystalline melting point, [Delta]Tm, studied in related work. For example, for benzyl alcohol in the 85 A pores, [Delta]Tm was \~{} 25 K and [Delta]Tg was \~{} 3 K.}, author = {Jackson, Catheryn L. and McKenna, Gregory B.}, citeulike-article-id = {1702027}, citeulike-linkout-0 = {http://dx.doi.org/10.1016/0022-3093(91)90305-P}, citeulike-linkout-1 = {http://linkinghub.elsevier.com/retrieve/pii/0022-3093(91)90305-P}, citeulike-linkout-2 = {http://www.sciencedirect.com/science/article/B6TXM-48K85ST-BJ/2/5a50a5b16a95c920ca471e6824bf5aad}, day = {11}, doi = {10.1016/0022-3093(91)90305-P}, journal = {Journal of Non-Crystalline Solids}, keywords = {classic, confinement, goldman}, month = {June}, number = {Part 1}, pages = {221--224}, posted-at = {2007-09-27 17:39:25}, priority = {2}, title = {The glass transition of organic liquids confined to small pores}, url = {http://dx.doi.org/10.1016/0022-3093(91)90305-P}, volume = {131-133}, year = {1991} }

TY - JOUR ID - jackson91 L3 - citeulike-article-id:1702027 N2 - The glass-transition temperatures, Tg, of organic liquids confined to small pores were studied by differential scanning calorimetry (DSC). The Tg was measured as a function of pore size in controlled pore glasses (CPG) having pore diameters in the range of 40-730 A. The surface of the glass was treated with hexamethyldisilazane to promote wetting by the organic liquids studied (o-terphenyl and benzyl alcohol). Glasses formed in the pores had a lower Tg than in the bulk and the reduction in Tg increased as the pore size decreased. For example, the depression of the glass transition temperature, [Delta]Tg, of benzyl alcohol in 40 A and 85 A pores was 7.2 K and 3.1 K, respectively. The magnitude of [Delta]Tg also depends on the material; e.g. for o-terphenyl in the 85 A pores, [Delta]Tg was 8.8 K versus 3.1 K for benzyl alcohol. In general, it was noted that [Delta]Tg was considerably less than for the depression of the crystalline melting point, [Delta]Tm, studied in related work. For example, for benzyl alcohol in the 85 A pores, [Delta]Tm was ~ 25 K and [Delta]Tg was ~ 3 K. IS - Part 1 JF - Journal of Non-Crystalline Solids EP - 224 TI - The glass transition of organic liquids confined to small pores VL - 131-133 SP - 221 KW - classic KW - confinement KW - goldman AU - Jackson, Catheryn AU - McKenna, Gregory PY - 1991/06/11/ UR - http://dx.doi.org/10.1016/0022-3093(91)90305-P ER -