Curcuma Longa-Based Green and Sustainable Antioxidants for Biopolymers DOI
Mohammad Abdul Sattar

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(17), С. 6494 - 6508

Опубликована: Апрель 12, 2024

Unsaturated biopolymers (e.g., natural rubber (NR)) are highly vulnerable to thermo-oxidative degradation, which causes premature failure of NR products. As an indispensable antioxidant globally, 6PPD (N-(1,3-dimethyl butyl)-N′-phenyl-p-phenylenediamine) is employed retard the aging NR. Unluckily, and 6PPD-quinone (an oxidative product 6PPD) harmful aquatic human life and, thus, obviously merit their replacement with sustainable safer antioxidants for environmental protection. This study explored use curcumin NR-based polymer nanocomposites (PNCs). The combined experimental, molecular dynamics (MD), quantum mechanics (QM) simulations implemented analyze effect isomeric forms on protective mechanism, stability, solubility, dispersibility, diffusion in matrix. results revealed that both scavenged free radical preferentially via a hydrogen atom transfer mechanism. computed transition state energies show curcumin's enolic form (i.e., Curcumin (E)) interacts ROO. (peroxy) radicals lower barrier energy compared could protect from aging. MD have shown interfacial interactions at NR-curcumin interface resulted stronger binding energies, thus improving solubility dispersibility mean square displacement than 6PPD. While migration necessary replenish concentrations tire surface, higher rate may cause physical loss decrease service NR-PNCs. Overall, NR-PNCs loaded exhibited improved resistance viscoelastic performance PNCs made Thus, as safe antioxidant, open essential avenue toward substantial pollution abatement accumulated waste products making "Greener NR-PNCs.″

Язык: Английский

P-phenylenediamine antioxidants and their quinone derivatives: A review of their environmental occurrence, accessibility, potential toxicity, and human exposure DOI

Yuting Liang,

Feng Zhu, Jie Li

и другие.

The Science of The Total Environment, Год журнала: 2024, Номер 948, С. 174449 - 174449

Опубликована: Июль 3, 2024

Язык: Английский

Процитировано

18

Environmental fate of tire-rubber related pollutants 6PPD and 6PPD-Q: A review DOI
Stanley Chukwuemeka Ihenetu, Qiao Xu, Zulqarnain Haider Khan

и другие.

Environmental Research, Год журнала: 2024, Номер 258, С. 119492 - 119492

Опубликована: Июнь 25, 2024

Язык: Английский

Процитировано

17

Spatiotemporal variation of 6PPD and 6PPDQ in dust and soil from e-waste recycling areas DOI
Zhuxia Zhang,

Chenxu Dai,

Siyan Chen

и другие.

The Science of The Total Environment, Год журнала: 2024, Номер 923, С. 171495 - 171495

Опубликована: Март 5, 2024

Язык: Английский

Процитировано

14

Occurrence and Oxidation Kinetics of Antioxidant p-Phenylenediamines and Their Quinones in Recycled Rubber Particles from Artificial Turf DOI
Feng Zhao, Jingzhi Yao, Xinyu Liu

и другие.

Environmental Science & Technology Letters, Год журнала: 2024, Номер 11(4), С. 335 - 341

Опубликована: Март 25, 2024

N,N′-Substituted p-phenylenediamines (PPDs) are widely utilized as rubber antioxidants and emitted into the environment with their transformation products (TPs) including highly toxic 6PPD-quinone. However, occurrence of PPDs TPs in inconspicuous oxidation kinetics under natural aging conditions remains unclear. Herein, we performed a field survey these compounds crumb rubbers from 40 school artificial turfs. Twelve were frequently detected particles, dominated by well-known N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine (6PPD) N-isopropyl-N′-phenyl-1,4-phenylenediamine (IPPD), well PPD-Qs. One pristine material was chosen to simulate process examine kinetics. The concentrations all powder decreased > 50% within 4 days aging, much faster than that suggesting size effect on oxidation. Different had distinct degrees both simulated experiments. Besides ozone, found high temperature could induce significantly decay particles UV exposure. In sum, our investigations reveal PPD-Qs is ubiquitous chemically specific turf, which be affected particle key factors controlling

Язык: Английский

Процитировано

13

Effects of environmental concentrations of 6PPD and its quinone metabolite on the growth and reproduction of freshwater cladoceran DOI

Chaoli Shi,

Fusen Wu,

Zirui Zhao

и другие.

The Science of The Total Environment, Год журнала: 2024, Номер 948, С. 175018 - 175018

Опубликована: Июль 24, 2024

Язык: Английский

Процитировано

12

Navigating the environmental dynamics, toxicity to aquatic organisms and human associated risks of an emerging tire wear contaminant 6PPD-quinone DOI
Syed Shabi Ul Hassan Kazmi, Qiao Xu, Muhammad Tayyab

и другие.

Environmental Pollution, Год журнала: 2024, Номер 356, С. 124313 - 124313

Опубликована: Июнь 3, 2024

Язык: Английский

Процитировано

11

Tire-derived contaminants 6PPD and 6PPD-Q: Analysis, sample handling, and reconnaissance of United States stream exposures DOI Creative Commons
Rachael F. Lane, Kelly L. Smalling, Paul M. Bradley

и другие.

Chemosphere, Год журнала: 2024, Номер 363, С. 142830 - 142830

Опубликована: Июль 11, 2024

The environmental ubiquity of tire and road wear particles (TRWP) underscores the need to understand occurrence, persistence, effects tire-related chemicals in aquatic ecosystems. One such chemical is 6PPD-quinone (6PPD-Q), a transformation product antioxidant 6PPD. In urban stormwater runoff 6PPD-Q can exceed acute toxicity thresholds for several salmonid species being implicated significant coho salmon losses Pacific Northwest. There critical prevalence across watersheds identify habitats heavily affected by TRWPs. We conducted reconnaissance 6PPD surface waters United States from sites (N = 94) with varying land use (urban, agricultural, forested) streamflow better stream exposures. A rapid, low-volume direct-inject, liquid chromatography mass spectrometry method was developed quantitation screening Laboratory holding times, bottle material, headspace, filter materials were investigated inform best practices sampling analysis. Glass bottles PTFE-lined caps minimized sorption borosilicate glass fiber filters provided highest recovery. stable at least 5 months pure laboratory solutions 75 days °C minimal headspace water stormwaters. Results also indicated samples be frozen extend times. not detected any 526 analyzed there no detections agricultural or forested sites. frequently (57%, N 90) impacted (45%, 276) concentrations ranging 0.002 0.29 μg/L. concentrations, above lethal level salmon, occurred during events. This highlights importance capturing episodic events areas near ecologically relevant habitat nursery grounds sensitive species.

Язык: Английский

Процитировано

11

Reactive Oxygen Species and Chromophoric Dissolved Organic Matter Drive the Aquatic Photochemical Pathways and Photoproducts of 6PPD-quinone under Simulated High-Latitude Conditions DOI
Zachary C. Redman,

Jessica L. Begley,

Isabel Hillestad

и другие.

Environmental Science & Technology, Год журнала: 2023, Номер 57(49), С. 20813 - 20821

Опубликована: Ноя. 30, 2023

The photochemical degradation pathways of 6PPD-quinone (6PPDQ, 6PPD-Q), a toxic transformation product the tire antiozonant 6PPD, were determined under simulated sunlight conditions typical high-latitude surface waters. Direct resulted in 6PPDQ half-lives ranging from 17.5 h at 20 °C to no observable over 48 4 °C. Sensitization excited triplet-state using Cs

Язык: Английский

Процитировано

22

Aromatic amine antioxidants (AAs) and p-phenylenediamines-quinones (PPD-Qs) in e-waste recycling industry park: Occupational exposure and liver X receptors (LXRs) disruption potential DOI Creative Commons
Shaohan Zhang, Zhipeng Cheng,

Yuhao Cao

и другие.

Environment International, Год журнала: 2024, Номер 186, С. 108609 - 108609

Опубликована: Апрель 1, 2024

Recently, evidence of aromatic amine antioxidants (AAs) existence in the dust electronic waste (e-waste) dismantling area has been exposed. However, there is limited studies investigating occupational exposure and toxicity associated with AAs their transformation products (p-phenylenediamines-quinones, i.e., PPD-Qs). In this study, 115 42 hand wipe samples collected from an e-waste recycling industrial park central China were analyzed for 19 6 PPD-Qs. Notably, median concentration ∑6PPD-Qs (1,110 ng/g 1,970 ng/m2) was significantly higher (p < 0.05, Mann-Whitney U test) than that ∑6PPDs (147 34.0 wipes. Among detected analytes, 4-phenylaminodiphenylamine quinone (DPPD-Q) (median: 781 ng/g) 1,4-Bis(2-naphthylamino) benzene (DNPD-Q) 156 ng/g), particularly prominent, which first area. Occupational assessments nuclear receptor interference ability, conducted through estimated daily intake (EDI) molecular docking analysis, respectively, indicated significant to PPD-Qs suggested prioritized Liver X receptors (LXRs) disruption potential PPDs The study provides considerable levels e-waste-related underscores importance assessing effects.

Язык: Английский

Процитировано

9

Unveiling the environmental impact of tire wear particles and the associated contaminants: A Comprehensive review of environmental and health risk DOI Creative Commons

Thodhal Yoganandham Suman,

Kang Daeho,

Jang Heewon

и другие.

Journal of Hazardous Materials, Год журнала: 2024, Номер 480, С. 136155 - 136155

Опубликована: Окт. 15, 2024

Язык: Английский

Процитировано

8