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首页> 外文期刊>Journal of Applied Polymer Science >Hydrolysis of poly(hydroxybutyrate-co-hydroxyvalerate) nanoparticles
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Hydrolysis of poly(hydroxybutyrate-co-hydroxyvalerate) nanoparticles

机译：聚（羟基丁酸酯-共羟基戊酸酯）纳米颗粒的水解

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摘要

Poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) is a natural polyester known for its biocompatibility and biodegradability. The hydrolysis of PHBV nanoparticles (90-150 nm) and microparticles (33-58 μm) was investigated. Particles were formulated from preformed polymer(s) by miniemulsification/ solvent evaporation technique to obtain nanoparticles or by emulsification/ solvent evaporation technique to obtain microparticles. The morphology of the nanoparticles was studied by Field Emission Gun-Scanning Electron Microscopy (FEG-SEM). The kinetics of PHBV degradation was followed by gel permeation chromatography. After storage of PHBV nanoparticles for 25 days at 37 °C, the M_n and M_w of PHBV was reduced up to 85 and 80%, respectively. PHBV nanoparticles stored at 4 °C presented a much lower molecular weight reduction.
机译：聚（羟基丁酸酯-共羟基戊酸酯）（PHBV）是一种天然聚酯，以其生物相容性和生物降解性而闻名。研究了PHBV纳米颗粒（90-150 nm）和微粒（33-58μm）的水解。通过预乳化/溶剂蒸发技术从预制的聚合物中配制颗粒以获得纳米颗粒，或通过乳化/溶剂蒸发技术获得微粒。通过场发射枪扫描电子显微镜（FEG-SEM）研究了纳米颗粒的形态。用凝胶渗透色谱法跟踪PHBV降解的动力学。将PHBV纳米粒子在37°C下保存25天后，PHBV的M_n和M_w分别降低至85％和80％。储存在4°C的PHBV纳米颗粒的分子量降低幅度要低得多。

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