THERMOGRAVIMETRIC ANALYSIS OF ETHYLENE VINYL-ACETATE COPOLYMERS WITH FOURIER-TRANSFORM INFRARED-ANALYSIS OF THE PYROLYSIS PRODUCTS

被引：44

作者：

MAURIN, MB ^{[1
]}

DITTERT, LW ^{[1
]}

HUSSAIN, AA ^{[1
]}

机构：

[1] UNIV KENTUCKY,COLL PHARM,DEPT PHARMACEUT & PHARMACEUT ANAL,LEXINGTON,KY 40536

来源：

THERMOCHIMICA ACTA | 1991年 / 186卷 / 01期

关键词：

D O I：

10.1016/0040-6031(91)87026-S

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Ethylene-vinyl acetate (EVAc) copolymers were examined using thermogravimetric analysis (TGA). The method permitted rapid and reproducible determination of the vinyl acetate content of the copolymer. The weight loss profile for low density polyethylene, i.e., ethylene-vinyl acetate with a 0% vinyl acetate content, showed a single-step decomposition from 460 to 560-degrees-C that accounts for 100% of the observed weight loss of the sample. The heating of ethylene-vinyl acetate with vinyl acetate contents from 9 to 40% resulted in a two-step decomposition in the ranges 360-450-degrees-C and 450-550-degrees-C A TGA-Fourier transform infrared spectrometer (FTIR) coupled system permitted the identification of the pyrolytic products in the effluent gas as acetic acid for the first-step product, and a mixture of 1-butene, carbon dioxide, ethylene, methane, and carbon monoxide.

引用

页码：97 / 102

页数：6

共 8 条

[1]

AKAHO E, 1979, THESIS U KENTUCKY LE

[2]

ARMALY MF, 1973, S OCULAR THERPAY, P80

[3]

Gale RM, 1986, US Patent, Patent No. [4615699, 4,615,699]

[4]

HIGUCHI T, 1975, Patent No. 3903880

[5] MECHANISM OF DIFFUSION OF COMPOUNDS THROUGH ETHYLENE VINYL-ACETATE COPOLYMERS .1. KINETICS OF DIFFUSION OF 1-CHLORO-4-NITROBEZENE, 3,4-DIMETHYLPHENOL AND 4-HEXYLRESORCINOL [J].

KAGAYAMA, A ;

MUSTAFA, R ;

AKAHO, E ;

KHAWAM, N ;

TRUELOVE, J ;

HUSSAIN, A .

INTERNATIONAL JOURNAL OF PHARMACEUTICS, 1984, 18 (03) :247-258

[6]

Madorsky S. L., 1964, THERMAL DEGRADATION

[7]

OHSAWA Z, 1972, KOBUNSHI KAGAKU, V29, P10

[8]

1988, ESTRADERM PACKAGE IN

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