Effect of the polymer type and experimental parameters on chemiluminescence curves of selected materials

被引:21
作者
Matisová-Rychlá, L [1 ]
Rychly, J [1 ]
Slovák, K [1 ]
机构
[1] Slovak Acad Sci, Inst Polymer, Bratislava 84236, Slovakia
关键词
chemiluminescence; thermal oxidation; degradation; polyolefins; polyamides; polysaccharides;
D O I
10.1016/S0141-3910(03)00181-2
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Oxidation of a series of common polymers and some low-molecular mass compounds has been examined by chemiluminescence. An oxidation test involving temperature ramp experiments in oxygen in the temperature range 40 - 220 degreesC has been used, enabling us to compare the oxidizability of different materials over a large temperature interval from the viewpoint of their chemiluminescence intensity and to discuss the observed discrepancies. According to this approach polymers can be divided into three groups. In the first, there are strongly luminescent polymers like polyolefins, polyamides, etc., in the second, medium luminescent polymers like cellulose, poly (2,6-dimethyl-1,4-phenylene oxide), etc., and in the third, weakly luminescent polymers like polystyrene, poly(methyl methacrylate), poly(ethylene terephthalate), etc. Different mechanisms of initiation may be seen in different temperature regions of polymer oxidation from the chemiluminescence intensity-temperature run depending on the polymer quality and on the physical state of the polymer matrix. The temperature coefficient of the chemiluminescence increase, as derived from the corresponding Arrhenius' graphs is usually rather low below the T-g of the polymer (around 40-60 kJ/mol) while at high temperatures it reflects the oxidation of the polymer matrix (around 100-150 kJ/mol or more). Any previous oxidation of the polymer may affect the chemiluminescence intensity-temperature run significantly. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码:173 / 180
页数:8
相关论文
共 21 条
[1]  
Blakey I, 2001, THESIS QUEENSLAND U
[2]   HETEROGENEOUS AND HOMOGENEOUS KINETIC ANALYSES OF THE THERMAL-OXIDATION OF POLYPROPYLENE [J].
CELINA, M ;
GEORGE, GA .
POLYMER DEGRADATION AND STABILITY, 1995, 50 (01) :89-99
[3]   Oxidation fronts in polypropylene as studied by imaging chemiluminescence [J].
Eriksson, P ;
Reitberger, T ;
Ahlblad, G ;
Stenberg, B .
POLYMER DEGRADATION AND STABILITY, 2001, 73 (01) :177-183
[4]   The influence of polymer type, stabilizers and sample geometry on the relationship between chemiluminescence and oxygen uptake [J].
Gijsman, P ;
Verdun, F .
POLYMER DEGRADATION AND STABILITY, 2001, 74 (03) :533-542
[5]   EFFECT OF SOME EXPERIMENTAL PARAMETERS ON THE OXYLUMINESCENCE CURVES OF SELECTED MATERIALS [J].
HSUEH, CH ;
WENDLANDT, WW .
THERMOCHIMICA ACTA, 1986, 99 :37-42
[6]  
KOHLER DR, 1998, POLYM DEGRAD STABIL, V68, P239
[7]   Chemiluminescence from thermal oxidation of poly (2,6-dimethyl-1,4-phenylene oxide) [J].
Matisová-Rychlá, L ;
Rychlsty, J ;
George, GA .
POLYMER DEGRADATION AND STABILITY, 2002, 75 (02) :385-396
[8]   SLOW LUMINESCENCE EMISSION FROM POLYMERS WITH A HYPERBOLIC DECAY LAW - A SURVEY OF COMMERCIAL MATERIALS WITH AN APPARATUS OF WIDE APERTURE [J].
MENDENHALL, GD ;
AGARWAL, HK .
JOURNAL OF APPLIED POLYMER SCIENCE, 1987, 33 (04) :1259-1274
[9]   Chemiluminescence from oxidized polypropylene during temperature cycling [J].
Rychly, J ;
Matisová-Rychlá, L ;
Jurcák, D .
POLYMER DEGRADATION AND STABILITY, 2000, 68 (02) :239-246
[10]   Chemiluminescence from paper I.: Kinetic analysis of thermal oxidation of cellulose [J].
Rychly, J ;
Strlic, M ;
Matisova-Rychlá, L ;
Kolar, J .
POLYMER DEGRADATION AND STABILITY, 2002, 78 (02) :357-367