A NOVEL GAS SENSOR FROM POLYMER-GRAFTED CARBON BLACK: EFFECTS OF POLYMER, CRYSTALLINE ORGANIC COMPOUND, AND CARBON BLACK ON ELECTRIC RESPONSE TO TETRAHYDROFURAN VAPOR
A NOVEL GAS SENSOR FROM POLYMER-GRAFTED CARBON BLACK: EFFECTS OF POLYMER, CRYSTALLINE ORGANIC COMPOUND, AND CARBON BLACK ON ELECTRIC RESPONSE TO TETRAHYDROFURAN VAPOR
复制标题
聚合物接枝炭黑的新型气体传感器：聚合物、结晶有机化合物和炭黑对四氢呋喃蒸气电响应的影响
DOI：
10.1081/ma-100103356
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
N. Tsubokawa
中科院分区：
文献类型：
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作者：
Jinhua Chen;N. Tsubokawa
研究了聚乙烯(PE)/聚乙烯接枝炭黑（CB） （CB-g-PE）、N，N'-二环己基碳二亚胺(DCC)/CB-g-PE和PE/DCC/CB-g-PE三种复合材料对四氢呋喃蒸气的电阻响应。为了改善复合材料中炭黑的相容性，将PE接枝到炭黑表面。三种复合材料中，DCC/CB-g-PE对THF气相的响应性最为敏感，但复合膜的强度太弱，无法实际应用。相反，PE/CB-g-PE的响应性和灵敏度太低，不能在许多领域得到应用。然而，通过添加DCC的改性，响应性大大提高，灵敏度明显高于PE/CB-g-PE。研究了复合材料中CB-g-PE和DCC含量对THF蒸汽响应性的影响。结果表明，复合材料对THF蒸汽的电阻响应性是由其晶体结构的变化引起的。提出了一个晶体模型来解释复合材料对溶剂蒸汽的反应。
The responsiveness of electric resistance of three types of composites, polyethylene (PE)/PE-grafted carbon black (CB) (CB-g-PE), N,N'-dicyclohexylcarbodiimide (DCC)/CB-g-PE and PE/DCC/CB-g-PE, to THF vapor was investigated. To modify the CB compatibility in the composite, PE was grafted onto a CB surface. Although responsiveness of composite DCC/CB-g-PE was the most sensitive to THF vapor among the three composites, the composite film is too weak to be of practical use. On the contrary, the responsiveness and the sensitivity of PE/CB-g-PE were too low to be used in many fields. However, through modification by the addition of DCC, responsiveness was greatly improved, and the sensitivity was considerably higher than that of PE/CB-g-PE. The effects of CB-g-PE and DCC content in the composites on the responsiveness to THF vapor was studied in detail. It was found that the responsiveness of electric resistance to THF vapor was caused by the change of the crystalline structure of the composite. A crystalline model was proposed to explain the response of the composite to solvent vapor.