Synthesis and Characterization of Tris (nonyl) Phenyl Phosphite and Interfacial Study with Karanja Oil in Acetonitrile Solution

Mane, Suyash; Thorat, Bhaskar N.; Sawant, Manohar R.

doi:10.1080/01932691.2011.567150

Cited by 3 publications

(1 citation statement)

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“…As a result, phosphites, which replaced the sulfur ester antioxidants as secondary antioxidants, were used widely in polymers. In the complex antioxidant systems composed of phosphites and phenol, the increase in the water resistance of phosphites is a key point in maintaining or increasing the synergistic effect of phosphites with phenol . More and more research scholars have shown interest in the improvement of the water resistance of phosphites .…”

Section: Introductionmentioning

confidence: 99%

Antioxidation and mechanism of phosphites including the free phenolic hydroxyl group in polypropylene

Meng

Jiang

Xin

et al. 2017

J of Applied Polymer Sci

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Inhibiting the degradation of polypropylene (PP) in melt processing and usage is an important issue in the plastic industry. It is becoming more and more urgent to increase the antioxidation of phosphites alone while maintaining the water resistance. In this study, one phosphite antioxidant, named bis-2,2 0 -methyl-4,6-di-tert-butylphenyl phosphite (BM46TBPP), which contains a waterresistant inner ring and a free phenolic hydroxyl group together, was synthesized. Then, antioxidation in PP was characterized with multiple extrusions and oxidation induction times (OITs). Finally, the hydrogen-donating ability of this antioxidant was tested with 2,2-diphenyl-1-picrylhydrazyl radical colorimetry to explain the antioxidation mechanism. The results show that the phosphite BM46TBPP displays better antioxidation than tris(2,4-di-tert-butylphenyl) phosphite (Irgafos 168) in melt processing and OIT testing. Furthermore, the priority of this antioxidant was more obvious when it was used in the presence of oxygen, so the antioxidant even made the PP stabilized by it alone show a longer OIT value than the PP stabilized by the complex system including Irgafos 168 and 2,4-di-tert-butylphenol because there was a free phenolic hydroxyl group in the BM46TBPP antioxidant molecule and the hydroxyl group made the antioxidant show intermolecular synergistic antioxidation through hydrogen donation to radicals. V C 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44696.

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Section: Introductionmentioning

confidence: 99%