N-aminophthalimide as a novel UV-stabilizer to promote physico-mechanical properties of high-density polyethylene (HDPE)
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Ahmed Abd Allah Haroun
Abstract
This study aimed to evaluate the efficacy of N-aminophthalimide (NAP) as a novel UV-stabilizer for high-density polyethylene (HDPE) in improving its physico-mechanical properties under UV exposure. NAP was synthesized by interaction between phthalimide and hydrazine hydrate. It was incorporated into HDPE with different weight ratios (1, 1.5, 2, and 3 %), and its performance was compared with Hostavin as a traditional UV stabilizer. The HDPE composites were exposed to UV irradiation for different periods (7 and 14 days) to evaluate their photodegradation behavior. Tensile strength, elongation at break were assessed before and after UV exposure. Also, oxidation induction time (OIT), melt flow rate (MFR), Vicat softening temperature were evaluated. Hostavin incorporation reduced tensile strength from 22.36 to 20.62 MPa at higher concentrations. It has been found that 3 % Hostavin, significantly improved elongation at break, increasing from 423 % to 1,170 %, suggesting enhanced flexibility. In contrast, NAP increased tensile strength to 22.9 MPa and moderately enhanced elongation but slightly declined at 3 % due to potential over-stabilization. Under UV exposure, retained tensile strength and elongation was improved with stabilizer content, which increasing tensile strength retention. The HDPE that containing NAP showed enhanced UV resistance and superior retention of mechanical properties compared to Hostavin.
Acknowledgments
The authors wish to express their sincere gratitude to the Chemistry Department at Ain Shams University, and Polymers and Pigments Department at National Research Centre for their generous support and invaluable resources, which were indispensable to the completion of this study.
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Research ethics: Not applicable.
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Informed consent: Not applicable.
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Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Use of Large Language Models, AI and Machine Learning Tools: None declared.
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Conflict of interest: The authors state no conflict of interest.
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Research funding: None declared.
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Data availability: Not applicable.
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© 2025 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Material Properties
- N-aminophthalimide as a novel UV-stabilizer to promote physico-mechanical properties of high-density polyethylene (HDPE)
- A novel double-layer nanofiber with gelatin–kaolin/polyvinylpyrrolidone–thrombin for rapid homeostasis
- Preparation and Assembly
- Preparation of ER/NR foamed composites with adjustable shape memory and oil adsorption properties
- Emerging trends in cryogelation: key factors influencing cryotropic gelation processes
- Preparation of chitosan/nano-copper sulfide/carrageenan bilayer film and its application in strawberry preservation
- A feasible chemo preventive approach involves the use of zinc-coated curcumin with a carrageenan matrix for improved stability, solubility, and bioavailability
- Engineering and Processing
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Articles in the same Issue
- Frontmatter
- Material Properties
- N-aminophthalimide as a novel UV-stabilizer to promote physico-mechanical properties of high-density polyethylene (HDPE)
- A novel double-layer nanofiber with gelatin–kaolin/polyvinylpyrrolidone–thrombin for rapid homeostasis
- Preparation and Assembly
- Preparation of ER/NR foamed composites with adjustable shape memory and oil adsorption properties
- Emerging trends in cryogelation: key factors influencing cryotropic gelation processes
- Preparation of chitosan/nano-copper sulfide/carrageenan bilayer film and its application in strawberry preservation
- A feasible chemo preventive approach involves the use of zinc-coated curcumin with a carrageenan matrix for improved stability, solubility, and bioavailability
- Engineering and Processing
- Controlling surface morphology of spin coated epoxy composites using the Marangoni instability
