Yoon, JT Jo, WH Lee, MS Ko, MB 2024-01-21T13:03:57Z 2024-01-21T13:03:57Z 2021-09-05 2001-01 0032-3861 https://pubs.kist.re.kr/handle/201004/140818 The effect of polar comonomers introduced into polystyrene (PS) chains on the melt intercalation into organosilicate is investigated in terms of shear and annealing time. In the case, where the interaction between polymers and silicate layers is relatively weak, e.g. PS/organosilicate hybrids, it is difficult for the polymer chains to diffuse into interlayers of organosilicate and the hybrids are unstable under shear. For hybrids in which the interaction is enhanced by incorporating polar comonomers, e.g. acrylonitrile (AN) and methylvinyl oxzoline (OZ), their structures are stable even after a long mixing time. However, they do not show an exfoliated structure under the mixing conditions used in this study. The interaction between the comonomer and the silicate surface is investigated indirectly via both X-ray diffractional and FTIR spectral analyses. It is concluded that the structural stability of polymer/organosilicate hybrids is very dependent on the relative magnitude of the interactions between polymers, organic modifiers, and silicate layers. (C) 2000 Elsevier Science Ltd. All rights reserved. English ELSEVIER SCI LTD MODIFIED LAYERED SILICATES POLYPROPYLENE-CLAY HYBRIDS POLYMER MELT MECHANICAL-PROPERTIES NANOSTRUCTURES POLYSTYRENE MODEL Effects of comonomers and shear on the melt intercalation of styrenics/clay nanocomposites Article 10.1016/S0032-3861(00)00333-5 1 POLYMER, v.42, no.1, pp.329 - 336 POLYMER 42 1 329 336 scie scopus 000089548700036 2-s2.0-0034307158 Polymer Science Polymer Science Article MODIFIED LAYERED SILICATES POLYPROPYLENE-CLAY HYBRIDS POLYMER MELT MECHANICAL-PROPERTIES NANOSTRUCTURES POLYSTYRENE MODEL clay intercalation exfoliation