specifications of biodegradable restricted pcl and plla chains in biocompatible peg-b-pcl and peg-b-plla single crystals

Single crystals of double crystalline block copolymers of poly (ethylene glycol) (peg)-b-poly(ε- caprolactone) (pcl) and peg-b-poly(l-lactide) (plla) were grown from dilute solution in homo- and mixed-brush systems. crystallization behavior of biodegradable one end-restricted crystallizable pcl and plla chains in homoand mixed-brush nanostructures were investigated. the chemical and physical circumstances of crystallizable brushes were altered. the physical environment was adjusted by amorphism/crystallinity and rigidity/ flexibility of neighboring brushes. the chemical environment was manipulated by interaction and miscibility of various brushes. distinct single crystals were grown with mixed-brushes of amorphous-crystalline (polystyrene (ps), poly (methyl methacrylate) (pmma), pcl, plla, double crystalline (pcl/plla), and rod-crystalline polyaniline (pani)/pcl or plla. surrounding was only effective on hindrance or nucleation commencement of crystallization for crystallizable brushes and had no effect on crystallization features. novel three-layer fully single-crystalline nanostructures, whose characteristics were fixed via changing the crystallization temperature, were also developed. for long crystallizable tethers, crystallization increased both brush and substrate thicknesses.