INTERACTION BETWEEN POLY （ETHYLENE OXIDE） AND SILICA NANOPARTICLES IN DILUTE SOLUTIONS

A mixed system that includes poly（ethylene oxide） （PEO） and silica （SiO2） nanoparticles is prepared using two mixing methods. The interaction between PEO and the SiO2 nanoparticles in the dilute basic solution is investigated using the dynamic tight scattering （DLS） and isothermal titration calorime...

Full description

Saved in:
Bibliographic Details
Published in高分子科学：英文版 no. 9; pp. 1290 - 1298
Main Author Da-peng Wang Mu-quan Yang Zhi-xin Dong Shu-qin Bo Xiang-ling Ji
Format Journal Article
LanguageEnglish
Published 2013
Subjects
PEO
SiO2纳米粒子
二氧化硅纳米粒子
混合系统
稀溶液
纳米SiO2
纳米粒子悬浮液
聚氧化乙烯
Online AccessGet full text

Cover

More Information
Summary:A mixed system that includes poly（ethylene oxide） （PEO） and silica （SiO2） nanoparticles is prepared using two mixing methods. The interaction between PEO and the SiO2 nanoparticles in the dilute basic solution is investigated using the dynamic tight scattering （DLS） and isothermal titration calorimetry （ITC） techniques. The DLS results show qualitatively that SiO2 nanoparticles interact with both random coils and aggregates of PEO through hydrogen bonding, and PEO-SiO2 complexes are formed. The degree of disaggregation of aggregates of PEO is readily adjusted by changing the concentration of SiO2 nanoparticle suspensions. Moreover, the ITC results also certify quantitatively the interaction between PEO and SiO2 nanoparticle, and give the evidence of formation of PEO-SiO2 complex.
Bibliography:PEO; SiO2 nanoparticles; Hydrogen bonding; Disaggregation; Mixing method; Depletion interaction.
A mixed system that includes poly（ethylene oxide） （PEO） and silica （SiO2） nanoparticles is prepared using two mixing methods. The interaction between PEO and the SiO2 nanoparticles in the dilute basic solution is investigated using the dynamic tight scattering （DLS） and isothermal titration calorimetry （ITC） techniques. The DLS results show qualitatively that SiO2 nanoparticles interact with both random coils and aggregates of PEO through hydrogen bonding, and PEO-SiO2 complexes are formed. The degree of disaggregation of aggregates of PEO is readily adjusted by changing the concentration of SiO2 nanoparticle suspensions. Moreover, the ITC results also certify quantitatively the interaction between PEO and SiO2 nanoparticle, and give the evidence of formation of PEO-SiO2 complex.
11-2015/O6
ISSN:0256-7679
1439-6203