期刊
DYES AND PIGMENTS
卷 172, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2019.107791
关键词
Force microscopy; Polymeric dispersant; Disperse dye; Dispersibility
资金
- Ministry of Trade, Industry and Energy, Republic of Korea [10078335, 20000628]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10078335, 20000628] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In this study, we propose a dye-monomer interaction force measurement technique based on atomic force microscopy (AFM) to predict the performance of polymeric dispersants. Cantilevers modified with functional monomers such as styrene, N-butyl acrylate (BA), and 2-(N-phthalimido)ethyl methacrylate (PEMA) were used to characterize the interaction force between these functional monomers and a target dye (Disperse Blue 359). The interaction forces of each monomer-styrene, BA, and PEMA-with Disperse Blue 359 were measured as 10.75 nN, 7.06 nN, and 21.31 nN, respectively, and their trend was consistent with dipole-moment values obtained from density function theory (DFT) calculations (p(styrene) = 0.0001, mu(PEMA) = 2.3158, mu(Disperse Blue 359) = 3.0368). We synthesized a series of model polymers containing specific functional monomers (CoPS10, CoBA, CoPPEMAs) with similar molecular weights, molecular-weight distributions, and acid contents and compared their actual performance with that predicted from interaction force measurement data. The results were well correlated with the interaction force measurement data. The effect of the PEMA content on dye dispersion stability was also investigated; the results indicated that both the PEMA content and the type of dye-interacting group greatly influenced the characteristics of the dispersion.
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