Preparation of poly(γ-benzyl-L-glutamate) microspheres by the precipitation polymerization

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作者：
Department of Chemical Engineering, Chungbuk University, Cheongju 360-763, Chungbuk, Korea, Republic of [1 ]
不详 [2 ]
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Polym J | / 10卷 / 809-812期
关键词：
Composition effects - Initiators (chemical) - Molecular weight - Monomers - Particle size analysis - Polymerization - Polystyrenes - Precipitation (chemical);
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摘要：
Poly(γ-benzyl-L-glutamate) microspheres were prepared from γ-benzyl-L-glutamate N-carboxy-α-amino acid by precipitation polymerization in polystyrene solution. The effect of the polystyrene concentration, characteristics of solvents and weight ratio of polystyrene/monomer and monomer/initiator was investigated. The particle size of the microspheres was decreased with increasing the concentration of polystyrene and increased with increasing the weight ratio of polystyrene/monomer. It was found that the microspheres are distributed and uniformly spherical particles, but are slightly elongated shape. Particle size and average molecular weight of the microspheres were distributed in the region of 0.75-1.48 μm, 2.7-3.4×104 respectively.
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