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• W2996861330 endingPage "104462" @default.
• W2996861330 startingPage "104462" @default.
• W2996861330 abstract "Heparin-specific molecularly imprinted polymer (MIP) using a nano-layer of polydopamine was synthesized at the surface of zeolite Beta nanoparticles. The Brunauer–Emmett–Teller (BET) surface area of MIP is about 347.23 m2/g with a mean pore diameter of nearly 8 nm, while the corresponding features for the non-imprinted polymers (NIP) are 255.50 m2/g and 10.17 nm, respectively. The transmission electron microscope (TEM) results revealed that the thickness of the polydopamine shell in NIP is less than that of MIP. The static and selective sorption of heparin along with its sorption kinetics were investigated at physiological pH. The results demonstrated that the sorption isotherm of heparin using NIP follows the Langmuir isotherm model, suggesting the monolayer sorption. However, the Freundlich model presented a better description of heparin sorption by MIP, which indicates the presence of high-affinity binding sites and surface heterogeneity. The pseudo-second-order model demonstrated satisfactorily the kinetic data, indicating the secondary reaction of heparin with imprinting sites through chemical sorption. The selectivity of MIP was assessed using sodium alginate as a similar compound, providing imprinting factor and selectivity coefficient of ca. 10.37 and 9.66, respectively. Finally, the reusability of MIP was studied in three sequential sorption-desorption cycles. Interestingly, after 3 cycles, MIP did not exhibit a significant reduction in binding capacity." @default.
• W2996861330 created "2020-01-10" @default.
• W2996861330 creator A5005414255 @default.
• W2996861330 creator A5064199568 @default.
• W2996861330 creator A5084459276 @default.
• W2996861330 date "2020-02-01" @default.
• W2996861330 modified "2023-09-30" @default.
• W2996861330 title "Synthesis and sorption properties of heparin imprinted zeolite beta/polydopamine composite nanoparticles" @default.
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• W2996861330 doi "https://doi.org/10.1016/j.reactfunctpolym.2019.104462" @default.

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