Size control of aromatic polyamide hollow spheres prepared by reaction-induced phase separation

被引：3
|
作者：
Nakayama, Hirofumi [1 ]
Adachi, Naoto [1 ]
Atarashi, Hironori [1 ]
Uchida, Tetsuya [2 ]
Yamazaki, Shinichi [1 ]
Kimura, Kunio [1 ]
机构：
[1] Okayama Univ, Grad Sch Environm & Life Sci, Kita Ku, 3-1-1 Tsushima naka, Okayama 7008530, Japan
[2] Okayama Univ, Grad Sch Nat Sci & Technol, Kita Ku, 3-1-1 Tsushima naka, Okayama 7008530, Japan
来源：
POLYMER | 2017年 / 111卷
关键词：
Morphology; Porous materials; Polyamides; Phase behavior; Polycondensation; SELF-ORGANIZING POLYCONDENSATION; POROUS POLYIMIDE NANOPARTICLES; POLY(P-OXYCINNAMOYL) MICROSPHERES; REPRECIPITATION METHOD; PARTICLES; SHELL; FABRICATION;
D O I：
10.1016/j.polymer.2017.01.060
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Size control of the poly (1,4-phenylene-5-hydroxyisophthalamide) hollow spheres was examined by tuning the polymerization condition, focusing on concentration, temperature and solvent. Higher concentration lowered the diameter owing to the higher degree of super-saturation for nucleation. Temperature drop during the polymerization just before the nucleation was so effective to make the diameter smaller. Moreover, the diameter was susceptive to the solubility of oligomers in the solvent, and higher content of liquid paraffin in the aromatic solvent lowered the solubility, resulting in the decrease in the diameter. Based on these results, the combination of the temperature drop and the solvent effect was the most desirable to prepare the smallest hollow spheres, and the diameter of hollow spheres could be controlled from 4.4 to 0.7 mu m. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：239 / 243
页数：5
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