Alfalfa/Lucerne (Medicago sativa) as a Source of Functional Bioadditives for Elastomeric Natural Rubber Composites DOI Open Access
Justyna Miedzianowska, Marcin Masłowski, Krzysztof Strzelec

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(23), P. 3444 - 3444

Published: Dec. 9, 2024

This study explores the impact of three bioadditives derived from Alfalfa-biomass, bio-ashes, and lyophilisates-on natural rubber composites, with a primary focus on anti-aging properties lyophilisates. Composite samples were prepared by incorporating these into analyzed using various characterization techniques to evaluate mechanical, thermal, aging, surface properties. The results highlight promising effects lyophilisates, significantly enhancing aging resistance rubber. factor was closest unity among all systems. Biomass bio-ashes also examined, offering insights their influence tensile strength, viscoelasticity, wettability. strength values almost 50% higher than those reference sample (8.5 MPa). provides detailed understanding interactions between rubber, showcasing potential enhance elastomer performance. These findings underscore viability Alfalfa-based as sustainable options for improving properties, significant implications industrial applications.

Language: Английский

Quantum Simulations of Radiation Damage in a Molecular Polyethylene Analog DOI Creative Commons

Nathaniel Troup,

Matthew P. Kroonblawd, Davide Donadio

et al.

Macromolecular Rapid Communications, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 22, 2024

Abstract An atomic‐level understanding of radiation‐induced damage in simple polymers like polyethylene is essential for determining how these chemical changes can alter the physical and mechanical properties important technological materials such as plastics. Ensembles quantum simulations radiation a analog are performed using Density Functional Tight Binding method to help bind its radiolysis subsequent degradation function dose. Chemical products categorized with graph theory approach, occurrence rates unsaturated carbon bond formation, crosslinking, cycle chain scission reactions, out‐gassing computed. Statistical correlations between product pairs show significant products, though decrease increasing atom recoil energy. The results present relatively descriptors possible indications network rearrangements middle range excitation energies. Ultimately, work provides computational framework coupling nonequilibrium chemistry potential macro‐scale that aid interpretation future experiments on plastic materials.

Language: Английский

Citations

2

Broken Chain Self-Reconnection Strategy Enables Radiation Ultraresistance of Polyurethane DOI
Jiading Wang, Shaoyun Guo, Xianlong Zhang

et al.

Macromolecules, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 29, 2024

High-energy radiation could accelerate the deterioration of polymer properties, greatly increase risk equipment failure, and reduce polymer's service life. Inhibition macromolecular chemical changes in polymers is core design concept for conventional resistance. Herein, we report a novel strategy that turns reaction into repair effect self-reconnection broken chains, thereby improving resistance polyurethane (PU) concretely; polybutadiene (PB) segments are evenly introduced PU with poly(propylene glycol) (PG) to prepare containing PB PG (PBG-PU). During irradiation, radical addition coupling reactions PBG-PU allow molecular chain be reconnected, thus continually repairing damage on PBG-PU. Therefore, elastomers still maintain about 70% strength minimal alterations creep properties recovery rates after 300 KGy radiation, while ordinary have completely lost their original properties. The combination modification method hard segment can even boost more than three times, showing excellent stability. also used stability ultrastructure material during high-dose gamma ray great adjustability. This demonstrates enormous potential achieving long-term application nuclear industry, space mission, medicine fields.

Language: Английский

Citations

2

Degradation of Low-Density Polyethylene Greenhouse Film Aged in Contact with Agrochemicals DOI Creative Commons
Caterina Picuno,

Zoe Godosi,

Gabriella Santagata

et al.

Applied Sciences, Journal Year: 2024, Volume and Issue: 14(23), P. 10809 - 10809

Published: Nov. 22, 2024

Plasticulture is a technique widely affirmed throughout Europe and the rest of world that employs plastic material for protecting agricultural cultivations, e.g., soil mulching, low/middle tunnel covering, greenhouse farming. Because their effects on sustainability production, these materials present serious environmental drawbacks. Even if recycling consolidated technical solution, several obstacles hinder mechanical film used in plasticulture. Mostly, degradation its characteristics, due to aging simultaneous contamination with agrochemicals fighting plant disease ensuring crop health, plays major hampering role. In paper, results laboratory tests PE-LD artificially aged different lengths time treated two (fungicide anti-aphid), are presented. The resulted considerable reduction properties usage phase even samples underwent twofold spraying, slower degradative kinetics were observed. conclusion, based also measured changes Carbonyl Index value, it doubtful this would be included process.

Language: Английский

Citations

1

Alfalfa/Lucerne (Medicago sativa) as a Source of Functional Bioadditives for Elastomeric Natural Rubber Composites DOI Open Access
Justyna Miedzianowska, Marcin Masłowski, Krzysztof Strzelec

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(23), P. 3444 - 3444

Published: Dec. 9, 2024

This study explores the impact of three bioadditives derived from Alfalfa-biomass, bio-ashes, and lyophilisates-on natural rubber composites, with a primary focus on anti-aging properties lyophilisates. Composite samples were prepared by incorporating these into analyzed using various characterization techniques to evaluate mechanical, thermal, aging, surface properties. The results highlight promising effects lyophilisates, significantly enhancing aging resistance rubber. factor was closest unity among all systems. Biomass bio-ashes also examined, offering insights their influence tensile strength, viscoelasticity, wettability. strength values almost 50% higher than those reference sample (8.5 MPa). provides detailed understanding interactions between rubber, showcasing potential enhance elastomer performance. These findings underscore viability Alfalfa-based as sustainable options for improving properties, significant implications industrial applications.

Language: Английский

Citations

0