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Keynote Lecture: the Pyrolysis and Combustion of Cigarette Constituents

Date: 1987 (est.)
Length: 1 page
87630766
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Author
Cullis, C.F.
Type
ABST, ABSTRACT
Area
NORMAN,VELLO/FILES IN VISITOR OFFICE
Site
G56
Request
R1-037
Date Loaded
18 Dec 2001
Document File
87630735/87630795/Missing
87630736/87630794/RJR Burning Cigarette Conference 870426 - 870429 Winston-Salem, N.C.
Master ID
87630737/0793

Related Documents:
Author (Organization)
City Univ London
Litigation
Feda/Produced
Characteristic
EXTR, EXTRA
UCSF Legacy ID
rxj98c00

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Page 1: rxj98c00
Keynote Lecture: The Pyrolysis and Combustion of Cigarette Constituents Charles F. Cullis The City University London, England The mechanisms of the pyrolysis of polymeric materials generally are affected by various factors, including in particular the heating rate, the absence or presence of oxygen and the nature and concentration of any additives. This is especially true in the case of cellulose (an important constituent of tobacco and the predominant constituent of cigarette paper), where the precise kinetic relationships observed depend also on the physical condition of the sample and the nature and flow rate of the surrounding gaseous atmosphere. A description is therefore given of recent work an the pyrolysis and combustion of cellulose (both on its own and in contact with tobacco) under a wide range of experimental conditions designed to simulate as closely as possible those involved during the smoking of cigarettes. Special attention has been paid to the effects on the nature and distribution of the reaction products (particularly the carbon monoxide levels and tar and nicotine deliveries) of very high linear heating rates (up to 1200 deg s'1 and with final temperatures of up to 600-1300K), of the concentration of oxygen present and of a large number of inorganic salts and other additives.

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