Thermal oxidation products and kinetics of polyethylene composites

被引：105

作者：

Yang, Rui ^{[1
]}

Liu, Ying ^{[1
]}

Yu, Jian ^{[1
]}

Wang, Kunhua ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Chem Engn, Inst Polymer Sci & Engn, Beijing 100084, Peoples R China

来源：

POLYMER DEGRADATION AND STABILITY | 2006年 / 91卷 / 08期

关键词：

polyethylene composite; thermal oxidation; inorganic filler; product; kinetics;

D O I：

10.1016/j.polymdegradstab.2005.12.013

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The thermal oxidation behavior of high-density polyethylene (HDPE) composites was investigated at 60 degrees C, 90 degrees C and 110 degrees C, using Fourier transform infrared (FTIR) spectroscopy and thermogravimetric analysis (TGA). The inorganic fillers do not modify the thermal oxidation mechanisms of HDPE. However, they have great effects on the thermal oxidation kinetics-both the activation energy and the pre-exponential factor increase. That means that although the addition of inorganic fillers retards the onset of thermal oxidation of HDPE, once the oxidation begins, it proceeds much faster than that of HDPE. Stability evaluation of HDPE composites by TGA was not consistent with the result by FTIR. The inorganic fillers influence the oxidation products and their distribution greatly. HDPE/STC and HDPE/mica oxidations were delineated by large amount of carbonyl formation, especially esters and ketones, while HDPE/wollastonite and HDPE/diatomite showed minimum carbonyl formation. In HDPE composites, there is a good relation between the carboxylic formation and the carbonyl index. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：1651 / 1657

页数：7

共 19 条

[1] Molecular weight changes and polymeric matrix changes correlated with the formation of degradation products in biodegraded polyethylene [J].

Albertsson, AC ;

Erlandsson, B ;

Hakkarainen, M ;

Karlsson, S .

JOURNAL OF ENVIRONMENTAL POLYMER DEGRADATION, 1998, 6 (04) :187-195

[2] Comparison of various thermal and photoageing conditions on the oxidation of titanium dioxide pigmented linear low density polyethylene films [J].

Allen, NS ;

Katami, H .

POLYMER DEGRADATION AND STABILITY, 1996, 52 (03) :311-320

[3] A chemiluminescence study of micron and nanoparticle titanium dioxide: effect on the thermal stability of metallocene polyethylene [J].

Corrales, T ;

Peinado, C ;

Allen, NS ;

Edge, M ;

Sandoval, G ;

Catalina, F .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2003, 156 (1-3) :151-160

[4] Thereto-oxidative degradation of linear low density poly(ethylene) in the presence of carbon black: a kinetic approach [J].

Goldberg, VM ;

Kolesnikova, NN ;

Paverman, NG ;

Kavun, SM ;

Stott, PE ;

Gelbin, ME .

POLYMER DEGRADATION AND STABILITY, 2001, 74 (02) :371-385

[5] Re-examination of the thermal oxidation reactions of polymers - 2. Thermal oxidation of polyethylene [J].

Gugumus, F .

POLYMER DEGRADATION AND STABILITY, 2002, 76 (02) :329-340

[6] Re-examination of the thermal oxidation reactions of polymers 3. Various reactions in polyethylene and polypropylene [J].

Gugumus, F .

POLYMER DEGRADATION AND STABILITY, 2002, 77 (01) :147-155

[7] Loss of Chimassorb 944 from LDPE and identification of additive degradation products after exposure to water, air and compost [J].

Haider, N ;

Karlsson, S .

POLYMER DEGRADATION AND STABILITY, 2001, 74 (01) :103-112

[8] Kinetic approach on stabilization of LDPE in the presence of carnosic acid and related compounds. I. Thermal investigation [J].

Jipa, S ;

Zaharescu, T ;

Setnescu, R ;

Gorghiu, LM ;

Dumitrescu, C ;

Santos, C ;

Silva, AM ;

Gigante, B .

JOURNAL OF APPLIED POLYMER SCIENCE, 2005, 95 (06) :1571-1577

[9] Effect of the thermo-oxidation and natural weather on the structure, morphology, and properties of unstabilized and HALS-stabilized LDPE films [J].

Kaci, M ;

Cimmino, S ;

Di Lorenzo, ML ;

Silvestre, C ;

Sadoun, T .

JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY, 1999, A36 (02) :253-274

[10] Chemical and morphological changes of environmentally degradable polyethylene films exposed to thermo-oxidation [J].

Khabbaz, F ;

Albertsson, AC ;

Karlsson, S .

POLYMER DEGRADATION AND STABILITY, 1999, 63 (01) :127-138

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