THERMAL DECOMPOSITION OF COPOLYMERS OF METHYL METHACRYLATE AND ALKYL METHACRYLATES OBTAINED FROM A CSTR

Shin BS; Seul SD

Korean Journal of Chemical Engineering, Vol.11, No.2, 74-80, April, 1994

Thermal decomposition of the copolymers of methyl methacrylate (MMA) with ethyl methacrylate (EMA) or n-butyl methacrylate (BMA) were investigated. The copolymers were obtained in a continuous stirred tank reactor (CSTR) using toluene and benzoyl peroxide, as solvent and initiator, respectively, at 80℃. The volume was 1.2 litters and residence time was 3 hours. The thermal decomposition followed the second order kinetics for both MMA/EMA and MMA/BMA copolymers, which were almost in accordance with the order of copolymerization in a CSTR. The activation energies of thermal decomposition were in the ranges of 32-37kcal/mol and 27-37 kcal/mole for MMA/EMA and MMA/BMA copolymers, respectively and a good additivity rule was observed against each composition for both copolymers. The thermogravimetric trace curve agreed well with the theoretical calculation.

[References]

Ogorkiewicz RH, ICL Ltd.: Engineering Properties of Thermoplastics, Wiley-Interscience, New York, p. 215 (1970)
Ray WH, Laurence RL, Polymerization Reactor Engineering in Chemical Reactor Theory, Amundson, N.R. and Lapidus, Eds., Prentice-Hall, Englewood Cliffs, NJ (1977)
Hamer JW, Akramov TA, Ray WH, Chem. Eng. Sci., 36, 1897 (1981)
Das S, Rodriguez F, J. Appl. Polym. Sci., 32, 5981 (1986)
Das S, Rodriguez F, J. Appl. Polym. Sci., 39, 1309 (1990)
Wittmer P, Macromol. Chem., 3, 129 (1979)
Shin BS, Seul SD, J. Chem. Eng., 10, 1 (1993)
Kissinger HE, Anal. Chem., 21, 1702 (1957)
Freeman ES, Carroll B, J. Polym. Sci., 62, 394 (1963)
Friedman HL, J. Polym. Sci. C: Polym. Lett., 6, 183 (1963)
Anderson DA, Freeman ES, J. Polym. Sci., 54, 253 (1961)
Ozawa T, Bull. Chem. Soc. Jpn., 38, 1881 (1965)
Doyle CD, J. Appl. Polym. Sci., 5, 285 (1961)
Duval C, Anal. Chim. Acta, 31, 301 (1964)
Newkirk AE, Anal. Chem., 32, 1558 (1960)
Lukaszewski GM, Redfern JP, Lab. Pract., 10, 469 (1961)
Calahorra E, Cortazar M, Guzuman GM, J. Polym. Sci., 23, 257 (1985)

[Referenced By]

[1] Ogorkiewicz RH, ICL Ltd.: Engineering Properties of Thermoplastics, Wiley-Interscience, New York, p. 215 (1970)

[2] Ray WH, Laurence RL, Polymerization Reactor Engineering in Chemical Reactor Theory, Amundson, N.R. and Lapidus, Eds., Prentice-Hall, Englewood Cliffs, NJ (1977)

[3] Hamer JW, Akramov TA, Ray WH, Chem. Eng. Sci., 36, 1897 (1981)

[4] Das S, Rodriguez F, J. Appl. Polym. Sci., 32, 5981 (1986)

[5] Das S, Rodriguez F, J. Appl. Polym. Sci., 39, 1309 (1990)

[6] Wittmer P, Macromol. Chem., 3, 129 (1979)

[7] Shin BS, Seul SD, J. Chem. Eng., 10, 1 (1993)

[8] Kissinger HE, Anal. Chem., 21, 1702 (1957)

[9] Freeman ES, Carroll B, J. Polym. Sci., 62, 394 (1963)

[10] Friedman HL, J. Polym. Sci. C: Polym. Lett., 6, 183 (1963)

[11] Anderson DA, Freeman ES, J. Polym. Sci., 54, 253 (1961)

[12] Ozawa T, Bull. Chem. Soc. Jpn., 38, 1881 (1965)

[13] Doyle CD, J. Appl. Polym. Sci., 5, 285 (1961)

[14] Duval C, Anal. Chim. Acta, 31, 301 (1964)

[15] Newkirk AE, Anal. Chem., 32, 1558 (1960)

[16] Lukaszewski GM, Redfern JP, Lab. Pract., 10, 469 (1961)

[17] Calahorra E, Cortazar M, Guzuman GM, J. Polym. Sci., 23, 257 (1985)