Use of dihydromyricetin as antioxidant for polypropylene stabilization

Xin, Mingliang; Ma, Yujie; Lin, Weihong; Xu, Kai; Chen, Mingcai

doi:10.1007/s10973-015-4504-5

Cited by 22 publications

(20 citation statements)

References 24 publications

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“…The compound is very similar to quercetin, but it is colorless and has a lower melting temperature. According to our knowledge only two attempts were made to use DHM as a stabilizer in polymers and both were done by the same group [24,25]. Chen et al added DHM to polyethylene [24] and polypropylene [25] at 2000 ppm and without any secondary antioxidant.…”

Section: Introductionmentioning

confidence: 99%

Melt stabilization of polyethylene with dihydromyricetin, a natural antioxidant

Kirschweng

Bencze

Sárközi

et al. 2016

Polymer Degradation and Stability

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Experiments have been carried out to compare the stabilization effect of two flavonoid type natural antioxidants, dihydromyricetin (DHM) and quercetin (Q) in polyethylene (PE). Additive concentrations changed between 0 and 500 ppm in several steps and 1000 ppm Sandostab PEPQ phosphorus containing secondary stabilizer was also added to each compound. Both antioxidants are very efficient stabilizers for PE, sufficient melt stability was achieved already at 50 ppm DHM content. At small concentrations dihydromyricetin proved to be more efficient melt stabilizer and it protected the secondary antioxidant better than quercetin. In spite of its better efficiency in melt stabilization, polymers containing DHM had the same residual stability as those prepared with quercetin. Accordingly, the larger efficiency does not result from the larger number of active phenolic hydroxyls in the molecule, but from interactions with the phosphorous secondary stabilizer that is stronger or at least different for DHM than quercetin. In spite that DHM is a white powder, it gave the polymer a brownish color which became deeper with increasing number of extrusions and additive content. Nevertheless, both natural antioxidants can be used efficiently for the stabilization of polymers in applications in which color is of secondary importance.

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Section: Introductionmentioning

confidence: 99%

Melt stabilization of polyethylene with dihydromyricetin, a natural antioxidant

Kirschweng

Bencze

Sárközi

et al. 2016

Polymer Degradation and Stability

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show abstract

“…Quite a few of natural compounds derived from plants have been used as stabilizer for foods [3][4]5,6] and polymer. [7][8][9][10][11][12][13][14][15][16][17][18][19] Lignin that comes from cell walls of woods and grasses is a natural macromolecule polyphenol. PE mixed with a mass of lignin exhibited preferable thermooxidative stability and processing stability.…”

Section: Introductionmentioning

confidence: 99%

“…[7] α-Tocopherol and dihydromyricetin are more effective processing stabilizer in PE and thermal stabilizer in PP and PE than synthetic phenolic antioxidant Irganox 1,010, respectively. [8][9][10] Huimin Xia and Hui Gao contributed equally to this work.…”

Section: Introductionmentioning

confidence: 99%

Puerarin, an efficient natural stabilizer for both polyethylene and polypropylene

Xia

Gao

Sun

et al. 2020

J of Applied Polymer Sci

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Puerarin, a natural compound, was used as multifunctional protector for polyethylene (PE) and polypropylene (PP). Firstly, puerarin and tetrakis(2,4‐di‐tert‐butylphenol)[1,1‐biphenyl]‐4,4′‐diylbisphosphite (PEPQ) could protect PE and PP against thermos‐oxidative degradation: after modification, the oxidation induction time (OIT) of increased ca. 4,160% (PE‐P1200‐P sample) and 130% (PP‐P1200‐P sample); the carbonyl index (CI) obtained through accelerated aging decreased ca. 58% (PE‐P1200‐P sample). Secondly, it is excited to find that puerarin and PEPQ could pretect PE agianst photooxidative degradation: CI value decreased ca. 35% after modification. Thridly, the coorperation of puerarin and PEPQ was also benefit for the processing stability: the change of melt flow rate (MFR) between first and fifth extrusions decreased ca. 83% (PE‐P1200‐P sample) and 99% (PP‐P1200‐P sample). Forthly, puerarin and PEPQ could still protect PE against degradation after five extrusions: the loss of tensile strength and elongation at break decreased ca. 96% and 95% after modification. Finally, the interaction of puerarin with PEPQ was discussed and the role of puerarin in protecting polyolefins was proposed.

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“…Because of its polyaromatic structure lignin also stabilizes polymers in some extent as proved by several studies both in polyethylene and in polypropylene indeed [9][10][11]. Flavonoids, like quercetin or dihydromyricetin are very efficient antioxidants and some of them are used already in food [12], but attempts are made to apply them in polymers as well [13][14][15][16]. The number of potential natural compounds which might be used as antioxidant in polyolefins is very large and only several of them have been studied in stabilization experiments up to now.…”

Section: Introductionmentioning

confidence: 99%

Long term stabilization of PE by the controlled release of a natural antioxidant from halloysite nanotubes

Hári

Sárközi

Földes

et al. 2018

Polymer Degradation and Stability

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A natural antioxidant, quercetin, was adsorbed on the surface of halloysite nanotubes in various amounts to prepare a controlled release device. The combined additive was added to polyethylene providing antioxidant levels of 250, 500, 750 and 1000 ppm. All polymer samples contained 1000 ppm Sandostab PEPQ phosphonite secondary antioxidant as well. The stabilizing efficiency of quercetin was determined in processing experiments and by accelerated ageing. Quercetin proved to be a very efficient stabilizer of polyethylene. The use of the halloysite nanotube support resulted in more homogeneous dispersion and facilitated the dissolution of the compound in the polymer. Because of the high energy of halloysite surface, the stabilizer adhered to it very strongly and did not dissolve in polyethylene below a critical concentration. The melt stabilization efficiency of quercetin did not decrease in the presence of the halloysite support. The efficiency of long term stabilization decreased somewhat, but halloysite nanotubes pretreated with the stabilizer possessed a controlled release function, ageing was slower in their presence than with separately dispersed components or in the absence of the halloysite.

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Use of dihydromyricetin as antioxidant for polypropylene stabilization

Cited by 22 publications

References 24 publications

Melt stabilization of polyethylene with dihydromyricetin, a natural antioxidant

Melt stabilization of polyethylene with dihydromyricetin, a natural antioxidant

Puerarin, an efficient natural stabilizer for both polyethylene and polypropylene

Long term stabilization of PE by the controlled release of a natural antioxidant from halloysite nanotubes

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