EFFECT OF VARIOUS ALCOHOLS AND REACTION TIME ON THE PROPERTIES OF HYDROXYL TERMINATED NATURAL RUBBER SYNTHESIZED VIA OXIDATIVE DEGRADATION

The oxidative degradation of deproteinized natural rubber (DPNR) using cobalt bis(acetyl acetonate) in the presence of different alcohols and various reaction time; followed by reduction with sodium borohydride (NaBH4) for the synthesis of hydroxyl terminated liquid natural rubbers (HTNRs) was carried out.The synthesis of HTNRs from natural rubber

O comércio eletrônico ainda não está consolidado em várias regiões do Brasil, como no caso de supermercados via Internet no nordeste do país.Esta pesquisa buscou compreender os possíveis motivos, racionais ou emotivos, por estes fracassos.Um estudo de caso do "M

Expert systems are intelligent computer programs which use knowledge and inference procedures to solve problems.Their help in some areas is a final one, Microbial Biocontrol Strategies for Ambrosia Beetles and Their Associated Phytopathogenic Fungi because for solving some problems a lot of intellectual effort should be made but inference procedure