Structure of Plasma-Deposited Copolymer Films Prepared from Acrylic Acid and Styrene: Part II Variation of the Comonomer Ratio

被引：21

作者：

Fahmy, Alaa ^{[1
,2
]}

Mix, Renate ^{[1
]}

Schoenhals, Andreas ^{[1
]}

Friedrich, Joerg ^{[1
]}

机构：

[1] BAM Fed Inst Mat Res & Testing, D-12205 Berlin, Germany

[2] Al Azhar Univ, Fac Sci, Dept Chem, Cairo 11884, Egypt

来源：

PLASMA PROCESSES AND POLYMERS | 2013年 / 10卷 / 09期

关键词：

acrylic acid-styrene copolymer; bulk properties; dielectric properties; plasma polymerization; surface functionalization; FUNCTIONAL-GROUPS; POLYMERIZATION; DEPENDENCE; VISCOSITY; SURFACES;

D O I：

10.1002/ppap.201200110

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Copolymers of acrylic acid and styrene (AA/S) were prepared by pulsed plasma deposition technique. Their structure-property relationships were studied in dependence on the comonomer ratio. Both, the regularity of the structure and the composition of the thin copolymer films were investigated by bulk-sensitive (dielectric spectroscopy, FTIR, and differential scanning calorimetry) as well as surface-sensitive methods such as X-ray photoelectron spectroscopy (XPS). For an unambiguous identification of the functionality of the deposited films the COOH groups were estimated by derivatization with trifluoroethanol and subsequent XPS measurement as well as by the quantitative analysis of the FTIR data. As a result, the concentration of COOH groups on the surface and in the bulk is increasing with the fraction of AA in precursor mixture in a non-monotonous way but similar to the dependence obtained by conventional free radical polymerization.

引用

页码：750 / 760

页数：11

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