Influence of dielectric fluctuation on light-scattering properties of random copolymers in bulk

A highly transparent and thermally stable copolymer of 1-adamantyl methacrylate and styrene

“…Specifically, ideal random copolymers and alternating copolymers, whose heterogeneity sizes are expected to be small enough compared to the incident light wavelength, are highly transparent regardless of the refractive index of each component . Likewise, copolymers consisting of nearly identical refractive index materials also show little excess light scattering regardless of the sequence or order of the monomer units within the polymer chains . Here, the AdMA/St copolymer is a non‐ideal random copolymer and the refractive indices of the components are significantly different.…”

“…40 -43 Likewise, copolymers consisting of nearly identical refractive index materials also show little excess light scattering regardless of the sequence or order of the monomer units within the polymer chains. 25,44,45 Here, the AdMA/St copolymer is a non-ideal random copolymer and the refractive indices of the components are significantly different. However, the copolymerization system has an azeotropic point at AdMA/St = 55/45 mol% where the same effect as those for ideal random and alternating copolymers is obtained.…”