Abstract
Porous poly(γ-methyl L-glutamate) spherical particles underwent transition α-helix-to-β-structure in the main chain as a result of heat treatment in water or methanol. The particles obtained maintained their sphericity and characteristic porosity after the heat treatment, while the transition increased insolubility against organic solvents. The amount of β-structure depended on the temperature. The transition in water included hydrolysis of the residual carbomethoxy groups. Adsorption capacity of the particles for cytochrome C depended remarkably on the content of β-structure as well as the amount of carboxyl groups produced.
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