Effect of plasticizer-polymer compatibility on the response characteristics of optical thin CO2 and O2 sensing films

被引：28

作者：

Mills, A ^{[1
]}

Lepre, A ^{[1
]}

Wild, L ^{[1
]}

机构：

[1] Univ Wales Swansea, Dept Chem, Swansea SA2 8PP, W Glam, Wales

来源：

ANALYTICA CHIMICA ACTA | 1998年 / 362卷 / 2-3期

关键词：

D O I：

10.1016/S0003-2670(98)00051-8

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A homologous family of dialkyl phthalates has been used to investigate the effect of plasticizer/polymer compatibility on the response characteristics of transparent, plastic, thin optical gas sensing films for CO2 and oxygen. Plasticizer/polymer compatibilities were determined through the value of the difference in solubility parameter, i.e. Delta delta, for the plasticizer and polymer with a Delta delta value of zero indicating high compatibility. A strong correlation was found between plasticizer/polymer compatibility and sensitivity in phenol red/ethyl cellulose CO2-sensitive films and this relationship extended to CO2-sensitive films based on other polymers such as polystyrene and poly(methyl methacrylate). It extended also to optical O-2-sensitive films implying that the relationship is general for thin-film optical sensors. Other results from the CO2-sensitive films in different polymers indicated that the film sensitivity is largely independent of the polymer matrix regardless of its inherent gas permeability, when a sufficient quantity of compatible plasticizer is present. (C) 1998 Elsevier Science B.V.

引用

页码：193 / 202

页数：10

共 24 条

[11]

Mills A, 1996, P SOC PHOTO-OPT INS, V2631, P100

[12] Thin plastic film colorimetric sensors for carbon dioxide: Effect of plasticizer on response [J].

Mills, A ;

Monaf, L .

ANALYST, 1996, 121 (04) :535-540

[13]

MILLS A, 1992, ANAL CHEM, V64, P1382

[14]

MILLS A, 1997, SENSOR ACTUAT B-CHEM, V38, P419

[15]

PIRIG YN, 1994, RUSS J APPL CHEM+, V66, P691

[16]

RAEMER DB, 1991, Patent No. 5005572

[17]

SEITZ WR, 1988, CRC CR REV ANAL CHEM, V19, P135, DOI 10.1080/10408348808542810

[18]

SEYMOUR RB, 1992, POLYM CHEM INTRO, P394

[19] A LIFETIME-BASED OPTICAL CO2 GAS SENSOR WITH BLUE OR RED EXCITATION AND STOKES OR ANTI-STOKES DETECTION [J].

SIPIOR, J ;

BAMBOT, S ;

ROMAULD, M ;

CARTER, GM ;

LAKOWICZ, JR ;

RAO, G .

ANALYTICAL BIOCHEMISTRY, 1995, 227 (02) :309-318

[20]

SMALL PA, 1953, J APPL CHEM, V3, P71

← 1 2 3 →