Two-dimensional phase transition of styrene adsolubilized in cetyltrimethylammonium bromide admicelles on mica

Effect of Oxygen and Initiator Solubility on Admicellar Polymerization of Styrene on Silica Surfaces

“…Karlsson et al reported that the utilization of a hydrophobic initiator at an M/I value of ∼9 for the 24-hour deoxygenated admicellar polymerization of methyl methacrylate on aluminum pigments resulted in a fourfold increase in weight loss compared to a system using a hydrophilic initiator under the same conditions [37]. However, it is important to note that the study by Karlsson et al used a higher initial concentration of monomer (280 mM) compared to the present study (4.6 mM), which may have led to the formation of monomer droplets, either in solution or phase separated in the admicelle [43]. Interestingly, in our studies, the apparent conversion was similar for comparable M/I values regardless of the initiator solubility ( Figure 5) and followed the expected trend of conversion decreasing at six hours as the M/I value increases.…”

Localized In situ Polymerization on Graphene Surfaces for Stabilized Graphene Dispersions

“…and Marquez et al 50,60 , who observed polymerization on graphite surfaces. For completeness, more results on the AFM performed on the nylon-coated surfactant-stabilized graphene are provided in the supplementary information (Fig.…”

“…Prior work has shown that the polymer usually gets deposited on the substrate in the form of 'patches' or islands. AFM measurements on mica and graphite surfaces reveal that the polymer film formation is indeed discontinuous 47,51,59,60 . In case of the AFM images of our polymer-stabilized graphene, we observe an irregular deposition of the polymer on the graphene surface.…”

Quiescent bilayers at the mica–water interface

“…One of the most utilized model hydrophilic surface in related fundamental studies is muscovite mica (formula unit KAl 2 (Si 3 Al)O 10 (OH) 2 ). Due to its easily achievable molecular smoothness, mica is an ideal substrate for AFM, [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] surface force apparatus SFA [18][19][20][21][22][23][24][25][26][27][28][29][30] and electron microscopy (EM) 31 measurements. Among the most extensively studied cationic surfactants are the C n TABs and their adsorption at solid-liquid interface has been characterized in detail by many experimental techniques, including AFM, 2,3,6À14,16,17,32,33 SFA, [21][22][23][24][25]27,34,35 neutron reectivity (NR), 33,[37][38][39][40] optical reectivity (OR), 32,[41]…”

“…Below T K , they found that C 16 TAB formed at layer which was 2.4 nm in thickness on mica, indicative of interdigitated surfactant chains. However, above T K , C 16 TAB was initially found to form cylindrical aggregates, which gradually transformed into at structures 4.3 nm thick over a period of $17 h.…”