Pyrene lifetimes for monitoring polymer dissolution:: a fast transient fluorescence study

被引：27

作者：

Ugur, S ^{[1
]}

Pekcan, Ö ^{[1
]}

机构：

[1] Istanbul Tech Univ, Dept Phys, TR-80626 Istanbul, Turkey

来源：

POLYMER | 2000年 / 41卷 / 04期

关键词：

pyrene; poly(methyl methacrylate); fluorescence;

D O I：

10.1016/S0032-3861(99)00275-X

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Fast transient fluorescence technique (FTRT) was used to measure pyrene (4) Lifetimes during dissolution of glassy polymer, which is formed by free radical polymerization of methyl methacrylate (MMA), and Py was introduced during polymerization as a fluorescence probe to monitor swelling and dissolution. The dissolution process of poly(methyl methacrylate) (PMMA) glass was performed in chloroform (80%)-heptane (20%) mixture. Fluorescence lifetimes of Py from its decay traces were used to monitor the dissolution process. A model was derived for low quenching efficiencies for measuring mean lifetimes, [tau], of Py and it was observed that [tau] values decreased as the dissolution process proceeded. Desorption, D and mutual diffusion, D-m coefficients of Py molecules were measured during dissolution of PMMA and found to be around 1.19 x 10(-6) and 1.23 x 10(-6) cm(2) s(-1), respectively. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：1571 / 1575

页数：5

共 28 条

[11] PHOTOPOLYMERIZATION KINETICS AND MONOMER DIFFUSION IN POLYMER MATRIX [J].

KRONGAUZ, VV ;

YOHANNAN, RM .

POLYMER, 1990, 31 (06) :1130-1136

[12] REAL-TIME MONITORING OF DIFFUSION IN POLYMER-FILMS USING FLUORESCENT TRACER [J].

KRONGAUZ, VV ;

MOONEY, WF ;

PALMER, JW ;

PATRICIA, JJ .

JOURNAL OF APPLIED POLYMER SCIENCE, 1995, 56 (09) :1077-1083

[13] SOLVENT PENETRATION AND PHOTORESIST DISSOLUTION - A FLUORESCENCE QUENCHING AND INTERFEROMETRY STUDY [J].

LIMM, W ;

STANTON, D ;

DIMNIK, GP ;

WINNIK, MA ;

SMITH, BA .

JOURNAL OF APPLIED POLYMER SCIENCE, 1988, 35 (08) :2099-2116

[14] INSIGHTS INTO THE MECHANISM OF DIFFUSION OF SOME N,N-DIALKYLANILINES IN NATIVE LOW-DENSITY POLYETHYLENE FILMS USING A SIMPLE FLUORESCENCE TECHNIQUE [J].

LU, LD ;

WEISS, RG .

MACROMOLECULES, 1994, 27 (01) :219-225

[15] LASER INTERFEROMETRY FLUORESCENCE QUENCHING STUDY OF THE SOLVENT-SWOLLEN GEL LAYER OF THIN POLY(METHYL METHACRYLATE) FILMS UNDERGOING DISSOLUTION [J].

NIVAGGIOLI, T ;

WANG, F ;

WINNIK, MA .

JOURNAL OF PHYSICAL CHEMISTRY, 1992, 96 (18) :7462-7465

[16] FLUORESCENCE DEPOLARIZATION AND QUENCHING STUDIES OF ACENAPHTHALENE-LABELED POLY(ACRYLAMIDE) IN WATER [J].

PASCAL, P ;

DUHAMEL, J ;

WANG, YC ;

WINNIK, MA ;

ZHU, XX ;

MACDONALD, P ;

NAPPER, DH ;

GILBERT, RG .

POLYMER, 1993, 34 (06) :1134-1140

[17] FLUORESCENCE STUDIES OF POLYMER COLLOIDS .24. ENERGY-TRANSFER IN RESTRICTED DIMENSIONS - A NEW APPROACH TO LATEX MORPHOLOGY [J].

PEKCAN, O ;

EGAN, LS ;

WINNIK, MA ;

CROUCHER, MD .

MACROMOLECULES, 1990, 23 (08) :2210-2216

[18] LUMINESCENCE TECHNIQUES IN POLYMER COLLOIDS .1. ENERGY-TRANSFER STUDIES IN NON-AQUEOUS DISPERSIONS [J].

PEKCAN, O ;

WINNIK, MA ;

EGAN, L ;

CROUCHER, MD .

MACROMOLECULES, 1983, 16 (04) :699-702

[19] Real-time monitoring of swelling and dissolution of poly(methyl methacrylate) discs using fluorescence probes [J].

Pekcan, O ;

Ugur, S ;

Yilmaz, Y .

POLYMER, 1997, 38 (09) :2183-2189

[20]

Pekcan O, 1996, J APPL POLYM SCI, V60, P2105

← 1 2 3 →