Abstract
In this study, a macroinitiator of β-CD-ONa was prepared by a substitution reaction of β-cyclodextrin (β-CD) with sodium (Na). The macroinitiator was then used in the ring-opening polymerization of octamethylcyclotetrasiloxane (D4) to obtain a star polymer, in which β-CD is the core and polysiloxane is the arm. FTIR, NMR, TGA, CA, etc., were used to characterize the structure and properties of star polymers. The results indicated that there were four polysiloxane arms attached to each β-CD core, and the star polymer had good thermal stability. With the increase in D4 monomer dosage, the hydrophobicity of the star polymer slightly improved, but the reaction time had no significant effect on hydrophobicity. When the star polymer was coated onto polyethylene terephthalate membrane, the transmittance increased from 87.6% to 92.8%, and the haze did not change significantly. Furthermore, the surface of star polymer porous membranes was prepared by the static breath-figure method using n-hexane as solvent at 30 °C. The results showed uniform pore distribution and increased hydrophobicity.
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Acknowledgements
The research is especially grateful for the sponsored by Support Program (Industrial) of Changzhou Science and Technology (CE20170029), Jiangsu Province Graduate Cultivation Innovation Project, Double ‘Ten Hundred and Thousand’ Project of Wujin District Science and Technology Bureau, the Top-notch Academic Programs Project of Jiangsu Higher Education Institutions (TAPP), the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), Jiangsu Chenguang Paint Co., Ltd., Changzhou, Jiangsu and Shenzhen Basic Research Project (JCYJ20170818114324998).
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Chen, Y., Chen, J., Li, J. et al. Synthesis and characterization of β-cyclodextrin centered polysiloxane star polymers. Polym. Bull. 78, 2993–3008 (2021). https://doi.org/10.1007/s00289-020-03243-y
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DOI: https://doi.org/10.1007/s00289-020-03243-y