A ONE-STEP SURFACE MODIFICATION PROCEDURE TO PEG-GRAFTED NANO-TITANIA

郭朝霞

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A ONE-STEP SURFACE MODIFICATION PROCEDURE TO PEG-GRAFTED NANO-TITANIA

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- A ONE-STEP SURFACE MODIFICATION PROCEDURE TO PEG-GRAFTED NANO-TITANIA
- A ONE-STEP SURFACE MODIFICATION PROCEDURE TO PEG-GRAFTED NANO-TITANIA
- 高分子科学（英文版） 2007年第3期页码：291-296
- Affiliations：
  
  1.   Institute of Polymer Science and Engineering Department of Chemical Engineering
  2.   School of Materials Science and Engineering
  3.   Tsinghua University
  4.   Beijing 100084
  5.   China
- Author bio：
- Funds：
- DOI：
  中图分类号： O614.411
- 纸质出版：2007
- Accepted：
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[1]郭朝霞.A ONE-STEP SURFACE MODIFICATION PROCEDURE TO PEG-GRAFTED NANO-TITANIA[J].Chinese Journal of Polymer Science,2007(03):291-296.

A ONE-STEP SURFACE MODIFICATION PROCEDURE TO PEG-GRAFTED NANO-TITANIA[J]. 2007, (3): 291-296.
[1]郭朝霞.A ONE-STEP SURFACE MODIFICATION PROCEDURE TO PEG-GRAFTED NANO-TITANIA[J].Chinese Journal of Polymer Science,2007(03):291-296. DOI：

A ONE-STEP SURFACE MODIFICATION PROCEDURE TO PEG-GRAFTED NANO-TITANIA[J]. 2007, (3): 291-296. DOI：

摘要

<正>PEG （Polyethylene Glycol）-grafted nano-titania has been obtained in a one-step procedure using hexamethylene diisocyanate as the coupling agent and dibutyltin dilaurate as the catalyst in toluene at 80℃and characterized qualitatively by FTTR and quantitatively by elemental analysis and thermogravimetric analysis. A comparison of nano-titania with two other commonly used inorganic nanoparticles

nano-silica and nano-alumina

is made

revealing that reactivity order is nano-silica > nano-alumina > nano-titania in view of PEG grafting. Possible mechanism of PEG grafting is also discussed.

Abstract

PEG （Polyethylene Glycol）-grafted nano-titania has been obtained in a one-step procedure using hexamethylene diisocyanate as the coupling agent and dibutyltin dilaurate as the catalyst in toluene at 80℃and characterized qualitatively by FTTR and quantitatively by elemental analysis and thermogravimetric analysis. A comparison of nano-titania with two other commonly used inorganic nanoparticles

nano-silica and nano-alumina

is made

revealing that reactivity order is nano-silica > nano-alumina > nano-titania in view of PEG grafting. Possible mechanism of PEG grafting is also discussed.

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