Comparative non-isothermal kinetic analysis of thermal degradation of poly(vinyl chloride) prepared by living and conventional free radical polymerization methods

被引：21

作者：

Simoes, P. N. ^{[1
]}

Coelho, Jorge F. J. ^{[1
]}

Goncalves, Pedro M. F. O. ^{[2
]}

Gil, M. H. ^{[1
]}

机构：

[1] Univ Coimbra, Dept Chem Engn, P-3030790 Coimbra, Portugal

[2] Cires SA Companhia Ind Resinas Sintet, P-3864752 Samoqueiro Avanca, Estarreja, Portugal

来源：

EUROPEAN POLYMER JOURNAL | 2009年 / 45卷 / 07期

关键词：

Poly(vinyl chloride) (PVC); Living radical polymerization (LRP); Thermal decomposition; Non-isothermal kinetic analysis; METHACRYLATE) BLOCK-COPOLYMERS; VARIABLE ACTIVATION-ENERGY; VINYL-CHLORIDE; ALPHA; OMEGA-DI(IODO)POLY(VINYL CHLORIDE); VACUUM PYROLYSIS; PVC; WATER; DECOMPOSITION; PARAMETERS; IODOFORM;

D O I：

10.1016/j.eurpolymj.2009.04.021

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Non-isothermal kinetics of the thermal degradation of poly(vinyl chloride) (PVC) prepared by a living radical polymerization (LRP) method was performed and compared with the results obtained from PVC prepared by the conventional free-radical process (FRP). Both differential and integral isoconversional methods were applied for determining the apparent activation energy of the dehydrochlorination stage. This study made clear noticeable differences in the thermal degradation of the PVC samples under analysis. The newly synthesized LRP-PVC material has a better thermal stability and presents substantial differences in the macroscopic kinetics of the dehydrochlorination process compared with conventional FRP-PVC. These differences were assessed in quantitative terms on the basis of the kinetic triplet [E-a, A, f(alpha)]. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1949 / 1959

页数：11

共 71 条

[1] Thermal degradation of light-cured dimethacrylate resins - Part I. Isoconversional kinetic analysis [J].

Achilias, Dimitris S. ;

Karabela, Maria M. ;

Sideridou, Irini D. .

THERMOCHIMICA ACTA, 2008, 472 (1-2) :74-83

[2] Thermal degradation studies in poly(vinyl chloride)/poly(methyl methacrylate) blends [J].

Ahmad, Z. ;

Al-Awadi, N. A. ;

Al-Sagheer, F. .

POLYMER DEGRADATION AND STABILITY, 2008, 93 (02) :456-465

[3] Kinetic and chemical studies of polymer cross-linking using thermal gravimetry and hyphenated methods. Degradation of polyvinylchloride [J].

Anthony, GM .

POLYMER DEGRADATION AND STABILITY, 1999, 64 (03) :353-357

[4] Granulation, Phase Change, and Microstructure - Kinetics of Phase Change. III [J].

Avrami, M .

JOURNAL OF CHEMICAL PHYSICS, 1941, 9 (02) :177-184

[5] A COMPARISON OF VARIOUS ISOTHERMAL THERMOGRAVIMETRIC METHODS APPLIED TO THE DEGRADATION OF PVC [J].

BASAN, S ;

GUVEN, O .

THERMOCHIMICA ACTA, 1986, 106 :169-178

[6] Computational aspects of kinetic analysis Part A: The ICTAC kinetics project-data, methods and results [J].

Brown, ME ;

Maciejewski, M ;

Vyazovkin, S ;

Nomen, R ;

Sempere, J ;

Burnham, A ;

Opfermann, J ;

Strey, R ;

Anderson, HL ;

Kemmler, A ;

Keuleers, R ;

Janssens, J ;

Desseyn, HO ;

Li, CR ;

Tang, TB ;

Roduit, B ;

Malek, J ;

Mitsuhashi, T .

THERMOCHIMICA ACTA, 2000, 355 (1-2) :125-143

[7] The use of the IKP method for evaluating the kinetic parameters and the conversion function of the thermal dehydrochlorination of PVC from non-isothermal data [J].

Budrugeac, P ;

Segal, E ;

Pérez-Maqueda, LA ;

Criado, JM .

POLYMER DEGRADATION AND STABILITY, 2004, 84 (02) :311-320

[8] NONISOTHERMAL KINETICS OF REACTIONS WHOSE ACTIVATION-ENERGY DEPENDS ON THE DEGREE OF CONVERSION [J].

BUDRUGEAC, P ;

SEGAL, E .

THERMOCHIMICA ACTA, 1995, 260 :75-85

[9]

COELHO J, 2006, THESIS U COIMBRA

[10] Characterization of suspension poly(vinyl chloride) resins and narrow polystyrene standards by size exclusion chromatography with multiple detectors:: Online right angle laser-light scattering and differential viscometric detectors [J].

Coelho, JFJ ;

Gonçalves, PMFO ;

Miranda, D ;

Gil, MH .

EUROPEAN POLYMER JOURNAL, 2006, 42 (04) :751-763

← 1 2 3 4 5 6 7 8 →