Dual chain extension effect and antibacterial properties of biomolecules interleaved within LDH dispersed into PBS by in situ polymerization. Issue 9 (19th January 2018)

• Record Type: Journal Article
• Authors: Totaro, Grazia; Sisti, Laura; Celli, Annamaria; Aloisio, Irene; Di Gioia, Diana; Marek, Adam A.; Verney, Vincent; Leroux, Fabrice
• Is Part Of: Dalton transactions. Volume 47:Issue 9(2018)
• Page Start: 3155
• Page End: 3165
• Publication Date: 2018-01-19
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c7dt03914j
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : Nanocomposites based on poly(butylene succinate) and hydrotalcite-type anionic clays organo-modified with antibacterial biomolecules have been prepared by in situ polymerization. Abstract : Nanocomposites based on poly(butylene succinate) (PBS) and hydrotalcite-type anionic clays (HTs) organo-modified with biomolecules characterized by antibacterial and/or antioxidant activities, such asl -ascorbic acid (ASA), phloretic acid (HPP), l -tyrosine (TYR) andl -tryptophan (TRP), have been prepared by in situ polymerization. From XRD analysis and rheology experiments in a molten polymer state, intercalated HT hybrid platelets acting here as a hybrid filler are found to be well dispersed into polymers while providing a chain extension effect on PBS. Moreover, the molecules, when hosted within a HT interlayer gap, do preserve their pristine antibacterial activity, both in HT and in the resulting PBS composites. In particular, under the experimental conditions tested, HT/ASA and HT/TYR present the best combination of both properties (chain extension effect and antibacterial), especially versus E. coli as high as 90 and 97% of inhibition, respectively, using 2.5 wt% hybrid filler only. These findings open future applications for PBS associated with the hybrid HT filler as multifunctional materials in active packaging applications.