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Natural multi-function additive for linear low-density polyethylene: Scutellarin baicalensis extractive

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Abstract

Scutellaria baicalensis (SBC) richly possess active ingredients to satisfy the conditions for functional applications. Herein, the active components of SBC are extracted and introduced into linear low-density polyethylene (LLDPE) to perform as functional additives. The thermal oxygen stability, processing stability, ultraviolet (UV) stability, flame retardancy and mechanical properties are comprehensively investigated. Compared with pure LLDPE, the oxidation induction time (OIT) of LLDPE incorporating SBC extractive (SBE) increased ca. 24 times. The combination of SBE and antioxidant 626 produce more superior antioxidant capacity (OIT of 99.7 min is achieved), revealing an outstanding synergistic effect. After UV irradiation, the carbonyl index variation of the LLDPE adding SBE is less than 50% of that of pure LLDPE. The TGA test showed that SBE was involved in the free radical elimination process. Moreover, the horizontal burning time increases by 37 s with the introduction of both SBE and antioxidant 626. Those results adequately manifest that SBE is a natural, high-performance multi-function additive for LLDPE. This study validly expands the multi-functional application of natural substances into polyolefins, which is a great benefit to the green development of polymer-based composites.

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Data availability

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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Funding

This work was supported by the Natural Science Foundation of Shandong Province (ZR2020LFG002, ZR2020QB023), the Foundation of 2019 Science and Technology Projects of Qingdao West Coast New District [grant number: 2019–18], and the Research Foundation of Qingdao Fusilin Chemical Science &Technology Co., Ltd. (FSL-RF 2019).

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  1. Chengchao Liu and Kun Sui contributed equally in this work.

Authors and Affiliations

  1. College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China

    Chengchao Liu, Kun Sui, Jiuhong Liu, Zhongwei Wang, Long Chen & Qing Yu

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  1. Chengchao Liu
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  2. Kun Sui
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Contributions

Chengchao Liu: Data curation (Lead); Formal analysis (Lead); Investigation (Equal); Writing - original draft (Lead). Kun Sui: Investigation (Equal); Writing - original draft (Equal). Jiuhong Liu: Data curation (Equal). Zhongwei Wang: Funding acquisition (Lead). Project administration (Lead). Long Chen: Writing – review & editing (Lead). Qing Yu: Funding acquisition (Lead). Writing - review & editing (Lead).

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Correspondence to Long Chen or Qing Yu.

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Liu, C., Sui, K., Liu, J. et al. Natural multi-function additive for linear low-density polyethylene: Scutellarin baicalensis extractive. J Polym Res 31, 56 (2024). https://doi.org/10.1007/s10965-024-03902-y

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