化学可回收和可调节的多聚烯类多重聚合物共聚合物粘合剂
Yucheng Zhao1, Ethan C Quinn1, Megan E Battson2
1Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA.
Angewandte Chemie (International ed. in English)
|September 8, 2025
概括
从化学上可回收的热粘合剂是从多块共聚合物开发出来的. 这些新型粘合剂具有可调节的特性,易于解,处女质量的再生,提高了多层产品的可持续性.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 可持续化学 可持续化学
背景情况:
- 热粘合剂,如聚乙烯-联合乙酸 (EVA) 和聚氨对于多层产品至关重要,但由于化学可回收性和解锁性不佳,造成了回收挑战.
- 目前的粘合剂使废物管理复杂化,并阻碍了包装和建筑领域循环经济模式的发展.
研究的目的:
- 开发可调节,化学可回收的热粘合剂,基于类似聚烯类的多块共聚合物.
- 研究这些新型材料的粘合性能和可回收性的结构性质关系.
主要方法:
- 合成的多块共聚合物,具有可控的结晶硬块,无形软块和不同的含量.
- 描述了粘合性能,包括粘合强度 (高达6.80 MPa),并评估了解和化学回收过程.
- 证明了这些粘合剂在多层薄膜结构中的应用.
主要成果:
- 通过调节共聚合物成分来实现调节性粘合特性,从而产生明显高于传统EVA的强度.
- 成功证明了粘合剂的易于解,回收和化学回收,产生处女质量的材料.
- 建立了一个模块化粘合平台,可以从低到高范围调节粘合.
结论:
- 开发的多块共聚合物为传统热粘合剂提供了可持续的替代品,使化学可回收和重复使用成为可能.
- 该平台提供了一种多功能解决方案,用于设计各种应用的高性能粘合剂,以量身定制的特性.
- 该研究强调了先进聚合物设计的潜力,以应对材料行业的关键回收挑战.
相关概念视频
00:53Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)
2.2K
Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
2.2K
01:24Characteristics and Nomenclature of Copolymers
3.2K
Copolymers are the products obtained from the polymerization of multiple monomer species. So, in a polymer chain itself, there can be multiple repeating units that come from different monomers. The process of synthesizing a polymer from different monomer species is called copolymerization. When two monomers are involved, the polymer is known as a bipolymer. Polymers with three and four monomers are termed terpolymers and quaterpolymers, respectively. Figure 1 depicts the copolymerization of...
3.2K
01:20Types of Step-Growth Polymers: Polyesters
2.5K
The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the polymer...
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the polymer...
2.5K
01:13Olefin Metathesis Polymerization: Overview
2.5K
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 of a...
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists of a...
2.5K
01:20Anionic Chain-Growth Polymerization: Overview
2.6K
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,...
2.6K
01:14Polymer Classification: Architecture
3.7K
Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...
3.7K