A COMPARATIVE STUDY OF ROLES PLAYED BY ALUMINUM TRIBROMIDE AND ALUMINUM ACETYLACETONATE ON THE THERMAL DEGRADATION OF PMMA BY SIMULTANEOUS THERMOANALYTICAL TECHNIQUES

M. Arshad, K. Masud, M. Arif, S. Rahman, Z. H. Chohan, M. Arif, A. H. Qureshi, A. Saeed, U. Salma, M. S. Awan

Abstract


Blends of poly(methyl methacrylate) (PMMA) were prepared with aluminum tribromide (AlBr3) and aluminum
acetylacetonate (Al(acac)3)in definite ratios. Thermal studies (TG-DTG-DTA) of polymer and blends with both additives
were carried out in inert atmosphere to investigate the mode of degradation and the effects of stability/destability on
either component. The addition of compounds in polymer resulted early decompositions. The intermediates formed
during decomposition were also identified. The possible explanation of the thermal degradation reactions is advanced
on the basis of results gathered. The apparent activation energy (Eo) and order of reaction (n) of the pyrolitic reactions
were determined by Horowitz and Metzger method from the corresponding TG curves.


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References


N. Grassie, M. A. M Diab and A. Scotney,

Polym. Degrad. Stabili., 18, No. 2 (1987)

H. Nanbu, Y. Sakuma, Y. Ishihara, T.

Takesue and T. Ikemura, Polym. Degrad.

Stabili., 19, No. 1 (1987)61.

M. Tabata, O. Watanabe and J. Sohma,

Polym. Degrad. Stabili., 3, No. 6 (1981)443.

J. A. Chandrasiri and C. A. Wilkie, Polym.

Degrad. Stabili., 45, No. 1 (1994)91.

J. A. Chandrasiri, D. E. Roberts and C. A.

Wilkie, Polym. Degrad. Stabili., 45, No. 1

(1994)97.

I. C. McNeill, M. Zulfiqar and C. Urie, Polym.

Degrad. Stabili., 9, No. 4 (1984)239.

I. C. McNeill and R. C. McGuiness, Polym.

Degrad. Stabili., 9, No. 3 (1984)167.

C. M. Pratt, S. Barton, E. McGonigle, M.

Kishi and P. J. S. Foot, Polym. Degrad.

Stabili., 91 (2006)2315.

J. Song, Ch. H. Fischer and W. Schnabel,

Polym. Degrad. Stabili., 36, No. 3 (1992)261.

H. Yoshida, J. Therm. Anal. Cal., 49 (1997)

S. M. Dakka, J. Therm. Anal. Cal., 73 (2003)

S. M. Dakka, J. Therm. Anal. Cal., 75 (2004)

H. H. G. Jellineck and M. D. Luh, J. Phys.

Chem., 70 (1966) 3672.

I. C. McNeill and R. C. McGuiness, Polym.

Degrad. Stabili., 9, No. 4 (1984)209.

I.C. McNeill and J.J. Liggat, Polym. Degrad.

Stabili., 37, No. 1 (1992)25.

J. A. Chandrasiri and C. A. Wilkie, Polym.

Degrad. Stabili., 45, No. 1 (1994)83.

T. C. Chang and K. H. Wu., Polym.

Degrad.Stabili., 57, No. 3 (1997)325.

S. Zulfiqar and K.Masud, Polym.

Degrad.Stabili., 70 (2000)229.

H. H. Horowitz and G. Metzger, Anal. Chem.,

(1963)1464.

J. A. Riddick, W. B. Bunger and T. K.

Sakano, Organic Solvents: “Physical

Properties and Methods of Purification”,

John-Wiley and Sons, New York (1986).

G. Brauer (ed.): Handbook of Preparative

Inorganic Chemistry, Vol. 1, 2nd edition,

Acad. Press Inc., New York (1963) p. 834,

J. W. Robinson (ed): CRC Handbook of

Spectroscopy, Vol. II, CRC press, Inc. USA

(1974).

H. A. Szymanski and R. E. Erikson (ed):

Infrared Band Handbook, Vol. 1 and 2, 2nd

edition, IFI/Plenum, New York (1970).


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