Enzyme Catalyzed Synthesis of Water Soluble Mesalazine Oligomers and Evaluation of their Efficiency in Polypropylene Stabilization

Bi̇li̇ci̇, Ali̇; Çogal, Yunus; Geçibesler, İbrahim Halil; Kaya, İsmet

doi:10.1134/s1560090421060051

Cited by 2 publications

(1 citation statement)

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“…Therefore, it is used to prepare polymer antioxidants. Bilici and co-workers reported an oxidative polymerization reaction induced by horseradish peroxidase (HRP) for the preparation of novel polyaniline derivatives (PHCA) and 5-aminosalicylic acid. , The results of the antioxidant potential measurement indicate that PHCA possesses a good DPPH free radical scavenging capability and excellent metal ion chelating ability. However, 5-aminosalicylic acid exhibits only moderate antioxidant capability and fails to chelate metal ions.…”

Section: Enhancement Of Molecular Weightmentioning

confidence: 99%

Antimigration Polypropylene Antioxidants: A Review

Li,

Zhang,

Jiang

et al. 2024

Ind. Eng. Chem. Res.

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Hindered phenolic antioxidants have been extensively recognized and applied to boost the heat resistance and oxidative aging performance of poly(propylene) (PP) composites. Low-molecular-weight antioxidants are easy to volatilize, migrate, and be extracted from PP or PP-based products, which can directly reduce the antithermal oxidative aging effect of PP and its composites, and it can contaminate food or drugs under its packaging. The design of an efficient and durable antioxidant with antimigration performance has drawn the attention of researchers. Currently, three main approaches are explored: (I) enhancement of molecular weight, that is, high molecular weight of antioxidants can stimulate the structure stability and the resistance toward migration; (II) inorganic immobilization, which involves immobilizing the antioxidants on inorganic substrate to enhance the dispersion and the antimigration performance; and (III) intercalation-mediated assembly, which involved intercalating low-molecular-weight antioxidants into the interlayer region of a layered host to boost antimigration performance based on the host–guest interaction.

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Section: Enhancement Of Molecular Weightmentioning

confidence: 99%