Simulations of Structure and Morphology in Photoreactive Polymer Blends under Multibeam Irradiation.

ABSTRACT: We present a theoretical study of the organization of photoreactive polymer blends under irradiation by multiple arrays of intersecting optical beams. In a simulated medium possessing an integrated intensity-dependent refractive index, optical beams undergo self-focusing and reduced divergence. A corresponding intensity-dependent increase in molecular weight induces polymer blend instability and consequent phase separation, whereby the medium can evolve into an intersecting waveguide lattice structure, comprising high refractive index cylindrical cores and a surrounding low refractive index medium (cladding). We conduct simulations for two propagation angles and a range of thermodynamic, kinetic, and polymer blend parameters to establish correlations to structure and morphology. We show th

SUBMITTER: Ding N 

PROVIDER: S-EPMC9037196 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature