Siloxane rubber shows attractive properties of high stability,elasticity and transparency.Besides,the regulation of its properties renders it widely used in many application fields.However,most of the reported perform...Siloxane rubber shows attractive properties of high stability,elasticity and transparency.Besides,the regulation of its properties renders it widely used in many application fields.However,most of the reported performance improvement methods of siloxane rubber focus on the change of chemical composition of siloxane rubber,including the design of molecular chain and the introduction of other compounds,etc.Such a strategy is still faced with many limitations in practical application.In this work,on the premise of not changing the chemical composition of siloxane rubber,we propose a facile solvothermal polymerization process to change the structure of cross-linking networks,so as to obtain the siloxane rubber with controllable mechanical properties.Compared to the normal curing method,we realized polydimethylsiloxane elastomer(PDMS)with maximum elongation of more than 3,000%(>10 times of normally cured one)and tensile modulus lower than 0.15 MPa(<1/10 of normally cured one).In addition to superior stretchability,it gains extra high softness,stickiness and sensitive response to organic solvents.Based on our solvothermal cured PDMS,its applications in oil collection and organic solvent sensor have been demonstrated.It is expected that this method can be readily utilized widely and shows great application potentials.展开更多
基金This work was supported by the National Natural Science Foundation of China(Nos.51732011,21431006,21761132008,81788101,and 11227901)the Foundation for Innovative Research Groups of the National Natural Science Foundation of China(No.21521001)+4 种基金Key Research Program of Frontier Sciences,CAS(No.QYZDJ-SSW-SLH036)the National Basic Research Program of China(No.2014CB931800)the Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS(No.2015HSC-UE007)the Fundamental Research Funds for the Central Universities(Nos.WK5290000001,WK2060000034,and WK6030000127)This work was partially carried out at the USTC Center for Micro and Nanoscale Research and Fabrication。
文摘Siloxane rubber shows attractive properties of high stability,elasticity and transparency.Besides,the regulation of its properties renders it widely used in many application fields.However,most of the reported performance improvement methods of siloxane rubber focus on the change of chemical composition of siloxane rubber,including the design of molecular chain and the introduction of other compounds,etc.Such a strategy is still faced with many limitations in practical application.In this work,on the premise of not changing the chemical composition of siloxane rubber,we propose a facile solvothermal polymerization process to change the structure of cross-linking networks,so as to obtain the siloxane rubber with controllable mechanical properties.Compared to the normal curing method,we realized polydimethylsiloxane elastomer(PDMS)with maximum elongation of more than 3,000%(>10 times of normally cured one)and tensile modulus lower than 0.15 MPa(<1/10 of normally cured one).In addition to superior stretchability,it gains extra high softness,stickiness and sensitive response to organic solvents.Based on our solvothermal cured PDMS,its applications in oil collection and organic solvent sensor have been demonstrated.It is expected that this method can be readily utilized widely and shows great application potentials.
