Title: ORGANIC VAPOUR SENSOR FROM CARBON BLACK FILLED AMORPHOUS POLYMER COMPOSITE: EFFECTS OF PROCESSING, CARBON FIBRES AND IRRADIATION
Page Range: p.213-221
Author(s): Xian Ming Dong; Ruo Wen Fu; Ming Qui Zhang; Bing Zhang; Min Zhi Rong
File size: 209K
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Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 13
Issue No: No. 3
Abstract
Carbon black filled polybutyl methacrylate composites for use as organic vapour sensors were fabricated by polymerisation filling. It was found that the composites have a wide synthesis window, giving composite materials with high gas sensitivity under different conditions. In comparison with composites made by solution mixing, these composites made by polymerisation filling were shown to have a much higher responsivity to organic vapours because of the superior distribution of the filler particles. The addition of a third component, vapour-grown carbon fibres and the post-treatment of the composites by gamma-irradiation is claimed to have proven effective in enhancing response stability. This paper focuses on the effects of synthesis conditions such as reaction time, reaction temperature and initiator content, on the number-average molecular weight of the resultant polymer matrix, and the electrical responsivity of the resultant composites against organic vapours. Also evaluated, were the inclusion of the vapour-grown carbon fibres and the irradiation treatment. 20 refs.
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