Dibutyl phtalate

There is considerable interest in the design of biosensors for drugs of abuse (cocaine, heroin, morphine, etc.), as well as for prescription pharmaceutical compounds (see 267,325, and 326 for reviews). Typically these sensors are of the liquid membrane type, containing an organic compound reactive to the drug. A cocaine sensor, for example, consists of a PVC membrane plasticized with dibutyl phtalate, and containing tetraphenylborate as the active substance. A strychnine sensor uses a liquid membrane electrode based on ion pairs of strychnine with picrolonate or tetrakis (3-methylpheny)borate. 

DDT, dibromochloromethane, dibutyl phtalate, 1,2-dichloroethane, 1,1-dichlro-diethyl phtalate, di-n-butylphtalate, 2,4-dinitrophenol, 1,2-diphenylhydrazine ... 

Practically, structure determination of fillers is obtained by a very simple and easy method dibutyl phtalate absorption (DBPA) [44]. This method consists of filling up the voids in and between aggregates with DBP, which is a viscous liquid. Historically, the DPB volume was determined by making a solid pellet of carbon black and DBP with a spoon. Now, this delicate measurement is made automatically with a couple-monitored Banbury, in which a well-... 

High dibutyl phtalate absorption of FW200 showed that this carbon black had a large amount of free spaces between the aggregates (Table 2). Macromolecules of elastomers can be trapped in this pores or voids of the aggregates which increases the reinforcing effect of the filler. 

Let us consider a given mass Mcb of a carbon black at the end point of the so-called "crushed" dibutyl phtalate adsorption test (ASTM D-3493 see Section 4.1.3 above). At this stage, all the aggregates of the CB sample are likely exhibiting the most compact arrangement in a DBF matrix and, with respect to the overall volume of the DBF + CB mixture, the filler volume fraction is maximum and can be assessed from ... 

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