Determination of the swelling ratio of poly(urea-urethane) microcapsules by single-particle light scattering

被引：22

作者：

Dobashi, T ^{[1
]}

Furukawa, T ^{[1
]}

Narita, T ^{[1
]}

Shimofure, S ^{[1
]}

机构：

[1] Gunma Univ, Fac Engn, Dept Biol & Chem Engn, Kiryu, Gumma 3768515, Japan

来源：

LANGMUIR | 2001年 / 17卷 / 15期

关键词：

D O I：

10.1021/la010063a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The thickness delta of microcapsules consisting of a dioctyl phthalate core and an outer poly(urea-urethane) membrane has been determined by means of single-particle light scattering and the freeze-fracture method in combination with electron microscopy as a function of the dioctyl phthalate/wall-forming triisocyanate monomer volume ratio phi. The thickness delta increased nonlinearly with decreasing phi. The swelling ratio of the membrane was determined to be 1.2 in the range phi < 3, which was explained by the relatively low plasticizing effect of dioctyl phthalate.

引用

页码：4525 / 4528

页数：4

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