Properties of hydrophobic polymer melts tethered to the water surface as determined with in situ X-ray reflectivity

被引：23

作者：

Baltes, H

Schwendler, M

Helm, CA

Heger, R

Goedel, WA

机构：

[1] MAX PLANCK INST KOLLOID & GRENZFLACHENFORSCH,D-12489 BERLIN,GERMANY

[2] UNIV MAINZ,INST PHYS CHEM,D-55099 MAINZ,GERMANY

[3] UNIV SAARLAND,FACHRICHTUNG STRUKTURFORSCH,D-66041 SAARBRUCKEN,GERMANY

来源：

MACROMOLECULES | 1997年 / 30卷 / 21期

关键词：

D O I：

10.1021/ma970232r

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Insoluble monolayers of hydrophobic polymers with low glass transition temperature (perfluoropolyethers, polyisoprenes) and a single ionic head group (carboxylic acid, sulfonate) have been characterized at the air/water interface via X-ray reflectivity measurements. The films are considerably thicker (30-420 Angstrom) than conventional Langmuir monolayers of low molecular weight substances or polymers with surface active repeat units. The thickness is inversely proportional to the area per head group and is in accordance with a model assuming a solvent-free hydrophobic layer of the same density as the bulk material.

引用

页码：6633 / 6639

页数：7