Polysiloxane with fullerene moiety and its platinum complex have been prepared from (C\-2H\-5O)\-2CH\-3SiCH\-2CH\-2CH\-2NHCH\-2CH\-2NH\-2 via polymerization with (C\-2H\-6SiO)\-4 in the presence of (CH\-3)\-4NOH, foll...Polysiloxane with fullerene moiety and its platinum complex have been prepared from (C\-2H\-5O)\-2CH\-3SiCH\-2CH\-2CH\-2NHCH\-2CH\-2NH\-2 via polymerization with (C\-2H\-6SiO)\-4 in the presence of (CH\-3)\-4NOH, followed by the reaction with C 60 , then the complex reacting with potassium chloroplatinite in acetone under argon atmosphere. The Pt complex is an effective catalyst for hydrosilylation of olefin with triethoxysilane. It is found that the regioselectivity increases remarkably by the introduction C 60 moiety.展开更多
The calixarene crosslinked polysiloxanes were obtained by crosslinked (N-(β-aminoethyl)aminopropyl) modified silicon oil with 1,3-diglycidyl(calix[4]arene.)Their structures were characterized by infrared spectra and ...The calixarene crosslinked polysiloxanes were obtained by crosslinked (N-(β-aminoethyl)aminopropyl) modified silicon oil with 1,3-diglycidyl(calix[4]arene.)Their structures were characterized by infrared spectra and scanning electron microscopy.The thermal degradation behaviour of the calixarene crosslinked polysiloxanes with various content of calixarene under a nitrogen atmosphere was investigated by using thermogravimetry(TG),it showed that all the crosslinked polysiloxanes exhibited two-stage decomposition,the first decomposition peak was at about 391℃ and the second was at about 520℃,the ratio of the two fastest weight loss rates was varied with the content of calixarene.Under our experimental conditions,the calixarene crosslinked polysiloxane with 3% content of calixarene had the lowest rate of degradation during the first stage of decomposition.The thermal stability of calixarene crosslinked polysiloxanes was enhanced compared with that of (N-(β-aminoethyl)aminopropyl) modified silicon oil and 1,3-bis(2′,3′-epoxypropoxy)benzene crosslinked polysiloxane.展开更多
文摘Polysiloxane with fullerene moiety and its platinum complex have been prepared from (C\-2H\-5O)\-2CH\-3SiCH\-2CH\-2CH\-2NHCH\-2CH\-2NH\-2 via polymerization with (C\-2H\-6SiO)\-4 in the presence of (CH\-3)\-4NOH, followed by the reaction with C 60 , then the complex reacting with potassium chloroplatinite in acetone under argon atmosphere. The Pt complex is an effective catalyst for hydrosilylation of olefin with triethoxysilane. It is found that the regioselectivity increases remarkably by the introduction C 60 moiety.
文摘The calixarene crosslinked polysiloxanes were obtained by crosslinked (N-(β-aminoethyl)aminopropyl) modified silicon oil with 1,3-diglycidyl(calix[4]arene.)Their structures were characterized by infrared spectra and scanning electron microscopy.The thermal degradation behaviour of the calixarene crosslinked polysiloxanes with various content of calixarene under a nitrogen atmosphere was investigated by using thermogravimetry(TG),it showed that all the crosslinked polysiloxanes exhibited two-stage decomposition,the first decomposition peak was at about 391℃ and the second was at about 520℃,the ratio of the two fastest weight loss rates was varied with the content of calixarene.Under our experimental conditions,the calixarene crosslinked polysiloxane with 3% content of calixarene had the lowest rate of degradation during the first stage of decomposition.The thermal stability of calixarene crosslinked polysiloxanes was enhanced compared with that of (N-(β-aminoethyl)aminopropyl) modified silicon oil and 1,3-bis(2′,3′-epoxypropoxy)benzene crosslinked polysiloxane.
