Preparation of fine particles of poly(N-vinyl-2-pyrrolidone-co-2-methylene-1,3-dioxepane) using supercritical antisolvent

被引：20

作者：

Choi, Sungwoo

Lee, Kangmin

Kwon, Soyoung

Kim, Hwayong

机构：

[1] Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 151744, South Korea

[2] Seoul Natl Univ, Inst Chem Proc, Seoul 151744, South Korea

来源：

JOURNAL OF SUPERCRITICAL FLUIDS | 2006年 / 37卷 / 03期

关键词：

aerosol solvent extraction system; N-vinyl-2-pyrrolidone; 2-methylene-1,3-dioxepane; supercritical carbon dioxide;

D O I：

10.1016/j.supflu.2005.11.023

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Fine particles of poly(N-vinyl-2-pyrrolidone-co-2-methylene-1,3-dioxepane) (poly(NVP-co-MDOP)) were produced by means of aerosol solvent extraction system (ASES). Dichloromethane (DCM) was used as solvent and supercritical carbon dioxide was used as antisolvent. Mean diameter of obtained polymer particles ranged from 0.18 to 0.26 mu m. The effects of temperature, pressure and solution flow rate on the particle size were investigated. And the relation of particle size and initial drop size was also considered. The size and morphology of particles were investigated by scanning electron microscope. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：287 / 291

页数：5

共 24 条

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