Preparation of Ultrahigh Molecular Weight Polyethylene/Graphene Nanocomposite In situ Polymerization via Spherical and Sandwich Structure Graphene/Sio2 Support
Abstract Reduced graphene oxide/SiO2 (RGO/SiO2) serving as a novel spherical support for Ziegler-Natta (Z-N) catalyst is reported. The surface and interior of the support has a porous architecture formed by RGO/SiO2 sandwich structure. The sandwich structure is like a brick wall coated with a graphe...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2018-04-01
|
| Series: | Nanoscale Research Letters |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s11671-018-2515-4 |
| _version_ | 1827885038156382208 |
|---|---|
| author | Enqi Su Wensheng Gao Xinjun Hu Caicai Zhang Bochao Zhu Junji Jia Anping Huang Yongxiao Bai |
| author_facet | Enqi Su Wensheng Gao Xinjun Hu Caicai Zhang Bochao Zhu Junji Jia Anping Huang Yongxiao Bai |
| author_sort | Enqi Su |
| collection | DOAJ |
| description | Abstract Reduced graphene oxide/SiO2 (RGO/SiO2) serving as a novel spherical support for Ziegler-Natta (Z-N) catalyst is reported. The surface and interior of the support has a porous architecture formed by RGO/SiO2 sandwich structure. The sandwich structure is like a brick wall coated with a graphene layer of concreted as skeleton which could withstand external pressures and endow the structure with higher support stabilities. After loading the Z-N catalyst, the active components anchor on the surface and internal pores of the supports. When the ethylene molecules meet the active centers, the molecular chains grow from the surface and internal catalytic sites in a regular and well-organized way. And the process of the nascent molecular chains filled in the sandwich structure polymerization could ensure the graphene disperse uniformly in the polymer matrix. Compared with traditional methods, the porous spherical graphene support of this strategy has far more advantages and could maintain an intrinsic graphene performance in the nanocomposites. |
| first_indexed | 2024-03-12T19:40:26Z |
| format | Article |
| id | doaj.art-7af9f8807801432d961875415bee6c06 |
| institution | Directory Open Access Journal |
| issn | 1931-7573 1556-276X |
| language | English |
| last_indexed | 2024-03-12T19:40:26Z |
| publishDate | 2018-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-7af9f8807801432d961875415bee6c062023-08-02T03:54:48ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2018-04-011311910.1186/s11671-018-2515-4Preparation of Ultrahigh Molecular Weight Polyethylene/Graphene Nanocomposite In situ Polymerization via Spherical and Sandwich Structure Graphene/Sio2 SupportEnqi Su0Wensheng Gao1Xinjun Hu2Caicai Zhang3Bochao Zhu4Junji Jia5Anping Huang6Yongxiao Bai7MOE Key Laboratory for Magnetism and Magnetic Materials, Key Laboratory of Special Function Materials and Structure Design of Ministry of Education, Institute of Material Science and Engineering, Lanzhou UniversityMOE Key Laboratory for Magnetism and Magnetic Materials, Key Laboratory of Special Function Materials and Structure Design of Ministry of Education, Institute of Material Science and Engineering, Lanzhou UniversityMOE Key Laboratory for Magnetism and Magnetic Materials, Key Laboratory of Special Function Materials and Structure Design of Ministry of Education, Institute of Material Science and Engineering, Lanzhou UniversityDepartment of Material Science and Engineering, University of FloridaLanzhou Petrochemical Research Center, PetrochinaLanzhou Petrochemical Research Center, PetrochinaLanzhou Petrochemical Research Center, PetrochinaMOE Key Laboratory for Magnetism and Magnetic Materials, Key Laboratory of Special Function Materials and Structure Design of Ministry of Education, Institute of Material Science and Engineering, Lanzhou UniversityAbstract Reduced graphene oxide/SiO2 (RGO/SiO2) serving as a novel spherical support for Ziegler-Natta (Z-N) catalyst is reported. The surface and interior of the support has a porous architecture formed by RGO/SiO2 sandwich structure. The sandwich structure is like a brick wall coated with a graphene layer of concreted as skeleton which could withstand external pressures and endow the structure with higher support stabilities. After loading the Z-N catalyst, the active components anchor on the surface and internal pores of the supports. When the ethylene molecules meet the active centers, the molecular chains grow from the surface and internal catalytic sites in a regular and well-organized way. And the process of the nascent molecular chains filled in the sandwich structure polymerization could ensure the graphene disperse uniformly in the polymer matrix. Compared with traditional methods, the porous spherical graphene support of this strategy has far more advantages and could maintain an intrinsic graphene performance in the nanocomposites.http://link.springer.com/article/10.1186/s11671-018-2515-4NanocompositesGraphenePolymer-matrix compositesElectrical properties |
| spellingShingle | Enqi Su Wensheng Gao Xinjun Hu Caicai Zhang Bochao Zhu Junji Jia Anping Huang Yongxiao Bai Preparation of Ultrahigh Molecular Weight Polyethylene/Graphene Nanocomposite In situ Polymerization via Spherical and Sandwich Structure Graphene/Sio2 Support Nanoscale Research Letters Nanocomposites Graphene Polymer-matrix composites Electrical properties |
| title | Preparation of Ultrahigh Molecular Weight Polyethylene/Graphene Nanocomposite In situ Polymerization via Spherical and Sandwich Structure Graphene/Sio2 Support |
| title_full | Preparation of Ultrahigh Molecular Weight Polyethylene/Graphene Nanocomposite In situ Polymerization via Spherical and Sandwich Structure Graphene/Sio2 Support |
| title_fullStr | Preparation of Ultrahigh Molecular Weight Polyethylene/Graphene Nanocomposite In situ Polymerization via Spherical and Sandwich Structure Graphene/Sio2 Support |
| title_full_unstemmed | Preparation of Ultrahigh Molecular Weight Polyethylene/Graphene Nanocomposite In situ Polymerization via Spherical and Sandwich Structure Graphene/Sio2 Support |
| title_short | Preparation of Ultrahigh Molecular Weight Polyethylene/Graphene Nanocomposite In situ Polymerization via Spherical and Sandwich Structure Graphene/Sio2 Support |
| title_sort | preparation of ultrahigh molecular weight polyethylene graphene nanocomposite in situ polymerization via spherical and sandwich structure graphene sio2 support |
| topic | Nanocomposites Graphene Polymer-matrix composites Electrical properties |
| url | http://link.springer.com/article/10.1186/s11671-018-2515-4 |
| work_keys_str_mv | AT enqisu preparationofultrahighmolecularweightpolyethylenegraphenenanocompositeinsitupolymerizationviasphericalandsandwichstructuregraphenesio2support AT wenshenggao preparationofultrahighmolecularweightpolyethylenegraphenenanocompositeinsitupolymerizationviasphericalandsandwichstructuregraphenesio2support AT xinjunhu preparationofultrahighmolecularweightpolyethylenegraphenenanocompositeinsitupolymerizationviasphericalandsandwichstructuregraphenesio2support AT caicaizhang preparationofultrahighmolecularweightpolyethylenegraphenenanocompositeinsitupolymerizationviasphericalandsandwichstructuregraphenesio2support AT bochaozhu preparationofultrahighmolecularweightpolyethylenegraphenenanocompositeinsitupolymerizationviasphericalandsandwichstructuregraphenesio2support AT junjijia preparationofultrahighmolecularweightpolyethylenegraphenenanocompositeinsitupolymerizationviasphericalandsandwichstructuregraphenesio2support AT anpinghuang preparationofultrahighmolecularweightpolyethylenegraphenenanocompositeinsitupolymerizationviasphericalandsandwichstructuregraphenesio2support AT yongxiaobai preparationofultrahighmolecularweightpolyethylenegraphenenanocompositeinsitupolymerizationviasphericalandsandwichstructuregraphenesio2support |