用不同的聚合物系统合成和评估新型可持续抗氧化剂
Agathe Mouren1, Eric Pollet1, Luc Avérous1
1BioTeam/ICPEES ECPM, UMR CNRS 7515, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg CEDEX 2, France.
Polymers
|February 10, 2024
概括
可持续的酸被修改成持久的抗氧化剂. 这些环保抗氧化剂的性能与聚合物稳定中的传统选择相美,为行业提供了更绿色的替代方案.
科学领域:
- 聚合物科学与工程 聚合物科学与工程
- 材料化学 材料化学
- 可持续化学 可持续化学
背景情况:
- 抗氧化剂对于防止加工和使用过程中聚合物氧化和降解至关重要.
- 传统的抗氧化剂通常来自化石燃料,这促使人们寻找可持续的替代品.
- 酸为生物基抗氧化剂开发提供了一个有前途的来源.
研究的目的:
- 合成和评估从可持续的酸中提取的新型抗氧化剂.
- 为了比较这些新型抗氧化剂的疗效与生物基 (白醇) 和化石基 (Irganox 1076) 的基准.
- 评估这些抗氧化剂在不同条件下的不同聚合物矩阵中的性能.
主要方法:
- 通过化对酸 (4-基酸,3,4-二基酸) 的化学改性.
- 热塑性聚烯 (聚烯/聚乙烯混合物) 和热塑性聚氨与合成抗氧化剂的配方.
- 使用各种分析技术和加速衰老协议评估抗氧化剂效率.
- 对聚合物属性的监测,包括颜色稳定性和降解耐受性.
主要成果:
- 合成的酸衍生物表现出显著的抗氧化活性.
- 性能因聚合物矩阵和抗氧化剂结构而异.
- 新型抗氧化剂的稳定效果与传统抗氧化剂 (如Irganox 1076.) 相似.
- 在含有新抗氧化剂的配方中,颜色稳定性得到维持.
结论:
- 来自酸的环保抗氧化剂可以在聚合物稳定方面实现高性能.
- 这些可持续的选择为传统抗氧化剂提供了可行的替代品,其效率取决于特定的聚合物矩阵.
- 该研究强调了生物基分子在创造高性能,可持续的聚合物材料方面的潜力.
更多相关视频
07:42Author Spotlight: Development and Characterization of Eco-Friendly Lignin-Based Microparticles for Enhanced Delivery of Bioflavonoids
Published on: March 1, 2024
736
07:05Author Spotlight: Eco-Friendly Extraction of Bioactive Compounds Using Polyol-Based Microwave-Assisted Techniques
Published on: August 23, 2024
1.6K
相关概念视频
Polymers
35.7K
The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
35.7K
Anionic Chain-Growth Polymerization: Overview
2.1K
The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
2.1K
Radical Chain-Growth Polymerization: Overview
2.4K
Chain-growth or addition polymerization is successive addition reactions of monomers with a polymer chain. In radical chain-growth polymerization, the reaction proceeds via a free-radical intermediate. The free radical is formed from radical initiators, which spontaneously generate free radicals by homolytic fission. Organic peroxides (such as dibenzoyl peroxide, as shown in Figure 1) or azo compounds are popular radical initiators. A low concentration ratio of radical initiator to monomer is...
2.4K
Olefin Metathesis Polymerization: Overview
2.1K
Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on their double bonds between two olefins in the presence of a catalyst is known as the olefin metathesis reaction. The use of metathesis reaction for polymer synthesis is called olefin metathesis polymerization.
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists...
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists...
2.1K
