MIPs logo MIPdatabase      Use this space
Custom Search
Reference type: Journal
Authors: Casarin F, Dourado CS, Sousa LS, Grassi MT, Dias ACB
Article Title: Optimized Synthesis of Molecularly Imprinted Hybrid Polymer by Factorial Design for Selective Caffeine Extraction in Surface Water.
Publication date: 2021
Journal: Journal of the Brazilian Chemical Society
Volume: 32
Issue: (9)
Page numbers: 1789-1801.
DOI: 10.21577/0103-5053.20210070
Alternative URL: https://www.scielo.br/j/jbchs/a/w9NWmh5mZZNbQqbGRG8vbkk/?lang=en#

Abstract: A hybrid imprinted polymer (HMIP) was synthetized via sol-gel technique in aqueous solution for caffeine separation from environmental waters samples. The optimal conditions of synthesis were stablished by application of a 23 full factorial experimental design with three factors: ratio of functional monomer and cross-linker reagent, and acid or basic catalyst (HCl or NH4OH). The HMIP obtained with the factorial designs was 22.5 times more selective for caffeine than control polymer, with an adsorption mechanism of pseudo-second order with two sorption sites. The maximum equilibrium adsorption capacity was 1.91 mg g-1 that was maintained until ten cycles of reuse, indicating their excellent stability. The material was 21 times more selective for caffeine than for its analogous molecules (theophylline and theobromine). HMIP was applied in solid phase extraction (SPE) procedure and caffeine extraction of surface water had good recoveries (93.0%). These results demonstrated that the factorial experimental design resulted in an efficient and selective sorbent for caffeine with a reduction of number of synthesis and problems of trial-and-error protocol as well as reagents consumption decrease.
Template and target information: caffeine
Author keywords: molecularly imprinted polymer, factorial experimental design, hybrid synthesis, caffeine, water


  Eat, sleep, imprint, repeat shirt  SMI logo mug    Shirt featuring the template Caffeine

Molecules Special Issue call      Appeal for information






 

Join the Society for Molecular Imprinting
Logo of the Society for Molecular Imprinting

New items RSS feed
new items RSS feed  View latest updates

Sign-up for e-mail updates:
Choose between receiving an occasional newsletter or more frequent e-mail alerts.
Click here to go to the sign-up page.


Is your name elemental or peptidic? Enter your name and find out by clicking either of the buttons below!
Other products you may like:
view listings for MIP books on eBay:



Mickey Mouse 90th Anniversary banner