Pyrene-1-butyric acid monoglycerides（as di-OH chain extender） was synthesized from pyrenebutyric acid and glycidyl ester，which was used to prepare an aqueous polyurethane dispersions containing fluorescent probe with FRRT function. The aqueous polyurethane dispersion with building in fluorescent probe and aqueous polyurethane dispersion without fluorescent probe were mixed to prepare a film，which was tested by steady-state fluorescence spectrum to calculate the FRET efficiency and trace the extent of interparticle polymer diffusion（IPD） in the film. Film formation process of aqueous polyurethane dispersion was studied by this technology and found that the partice size，film forming temperature and degree of crosslinking provided great influence on the IPD.
WANG Wu-Sheng
,
ZHANG Chi
. Study on Interparticle Polymer Chain Diffusion of Waterborne Polyurethane During Film Formation by FRET Technology[J]. Paint & Coatings Industry, 2019
, 49(10)
: 22
-30
.
DOI: 10.12020/j.issn.0253-4312.2019.10.22
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