| DIBUTYLTIN DILAURATE-CATALYZED DIISOCYANATE COUPLING—GRAFTING OF POLY(ETHYLENE GLYCOL) ONTO NANO-SILICA SURFACE THROUGH A ONE-STEP PROCEDURE |
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| 作者姓名： | BinWang JianYu Zhao-xiaGuo |
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| 作者单位： | InstituteofPolymerScienceandEngineering,DepartmentofChemicalEngineering,SchoolofMaterialsScienceandEngineering,TsinghuaUniversity,Beijing100084,China |
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| 摘 要： | Grafting polymer glycols onto nano-silica surface through one-step procedure was investigated. The major characteristic of this procedure is that all the materials and reagents (silica, PEG, TDI, DBTDL, solvent) required for grafting were added simultaneously into the reaction vessel. TDI and DBTDL were used as coupling agent and catalyst, respectively.The products were characterized by FTIR, TGA, elemental analyses and TEM, giving evidence for successful grafting of PEG. Possible mechanism of this grafting was studied and two grafting processes were proposed. The process through which the grafting proceeds depends on the reaction temperature. Effect of molecular weight of PEG on grafting was also investigated.
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| 关 键 词： | 纳米材料 硅 一步法 甲苯二异氰酸酯 接枝共聚 乙烯 乙二醇 甘油二丁酸酯 |
| 收稿时间： | 2004-06-18 |
| 修稿时间： | 2004-08-01 |
DIBUTYLTIN DILAURATE-CATALYZED DIISOCYANATE COUPLING—GRAFTING OF POLY(ETHYLENE GLYCOL) ONTO NANO-SILICA SURFACE THROUGH A ONE-STEP PROCEDURE |
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| BinWang JianYu Zhao-xiaGuo.DIBUTYLTIN DILAURATE-CATALYZED DIISOCYANATE COUPLING—GRAFTING OF POLY(ETHYLENE GLYCOL) ONTO NANO-SILICA SURFACE THROUGH A ONE-STEP PROCEDURE[J].Chinese Journal of Polymer Science,2005,0(4):379-385. |
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| Authors: | Bin Wang Jian Yu Zhao-xia Guo |
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| Institution: | Institute of Polymer Science and Engineering, Department of Chemical Engineering, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | Grafting polymer glycols onto nano-silica surface through one-step procedure was investigated.The major characteristic of this procedure is that all the materials and reagents(silica,PEG,TDI,DBTDL,solvent)required for grafting were added simultaneously into the reaction vessel.TDI and DBTDL were used as coupling agent and catalyst,respectively. The products were characterized by FTIR,TGA,elemental analyses and TEM,giving evidence for successful grafting of PEG.Possible mechanism of this grafting was studied and two grafting processes were proposed.The process through which the grafting proceeds depends on the reaction temperature.Effect of molecular weight of PEG on grafting was also investigated. |
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| Keywords: | Silica PEG Toluene diisocyanate Grafting |
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