DIBUTYLTIN DILAURATE-CATALYZED DIISOCYANATE COUPLING—GRAFTING OF POLY(ETHYLENE GLYCOL) ONTO NANO-SILICA SURFACE THROUGH A ONE-STEP PROCEDURE

Bin Wang; Jian Yu; Zhao-xia Guo

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DIBUTYLTIN DILAURATE-CATALYZED DIISOCYANATE COUPLING—GRAFTING OF POLY(ETHYLENE GLYCOL) ONTO NANO-SILICA SURFACE THROUGH A ONE-STEP PROCEDURE

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- DIBUTYLTIN DILAURATE-CATALYZED DIISOCYANATE COUPLING—GRAFTING OF POLY(ETHYLENE GLYCOL) ONTO NANO-SILICA SURFACE THROUGH A ONE-STEP PROCEDURE
- DIBUTYLTIN DILAURATE-CATALYZED DIISOCYANATE COUPLING—GRAFTING OF POLY(ETHYLENE GLYCOL) ONTO NANO-SILICA SURFACE THROUGH A ONE-STEP PROCEDURE
- 高分子科学（英文版） 2005年23卷第4期页码：379-385
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- 纸质出版：2005-07-20
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Bin Wang, Jian Yu, Zhao-xia Guo. DIBUTYLTIN DILAURATE-CATALYZED DIISOCYANATE COUPLING—GRAFTING OF POLY(ETHYLENE GLYCOL) ONTO NANO-SILICA SURFACE THROUGH A ONE-STEP PROCEDURE[J]. 高分子科学（英文版）, 2005,23(4):379-385.

Bin Wang, Jian Yu, Zhao-xia Guo. DIBUTYLTIN DILAURATE-CATALYZED DIISOCYANATE COUPLING—GRAFTING OF POLY(ETHYLENE GLYCOL) ONTO NANO-SILICA SURFACE THROUGH A ONE-STEP PROCEDURE[J]. 2005, 23(4): 379-385.
Bin Wang, Jian Yu, Zhao-xia Guo. DIBUTYLTIN DILAURATE-CATALYZED DIISOCYANATE COUPLING—GRAFTING OF POLY(ETHYLENE GLYCOL) ONTO NANO-SILICA SURFACE THROUGH A ONE-STEP PROCEDURE[J]. 高分子科学（英文版）, 2005,23(4):379-385. DOI：

Bin Wang, Jian Yu, Zhao-xia Guo. DIBUTYLTIN DILAURATE-CATALYZED DIISOCYANATE COUPLING—GRAFTING OF POLY(ETHYLENE GLYCOL) ONTO NANO-SILICA SURFACE THROUGH A ONE-STEP PROCEDURE[J]. 2005, 23(4): 379-385. DOI：

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.

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

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