An atomic force microscope (AFM) and tapping mode AFM study of the solvent-induced crystallization of polycarbonate thin films

Enhanced crystallization of bisphenol-A polycarbonate by nano-scale clays in the presence of supercritical carbon dioxide

“…8 correlate with the crystalline phase, and the darker regions are associated with the amorphous phase. Note that the crystal morphology is very different from those observed from solvent-induced [4,26] or even thermal-induced crystallization [27]. In those studies spherulitic structures and round-shaped patterns of 30-50 nm diameter in substructure of spherulite were observed.…”

Branched Crystalline Patterns Formed Around Poly(ethylene oxide) Dots in Humidity

“…But, in an ultrathin or thin film, a constrained geometry system, the properties of polymer chains, such as crystallinity, chain packing and orientation, are different from the bulk state. Atomic force microscopy (AFM) studies of thin polymer films have visualized the growth [1][2][3][4][5][6][7][8] and melting [7,9] of crystalline lamellae in spherulites and the lamellar growth in shishkebab structures, [10,11] and also given rise to some controversial topics in the field of existing polymer crystallization theories. [3] Branched crystalline patterns different from spherulite have been observed in ultrathin polymer films.…”

Preparation of Micron‐Sized Spherulitic Bisphenol A Polycarbonate Particles in Thin Films

“…The morphology of the three‐dimensional spherulitic particles shown in Figure 1 is quite different from the near‐planar (two‐dimensional) spherulitic morphology commonly observed in thermally annealed1, 21 or vapor‐induced crystallized films 22–24. The three‐dimensional morphology similar to Figure 1 was reported when a free standing and thick polycarbonate film (254 µm) was crystallized by SINC technique with acetone 25.…”