生物降解维尼尔共聚合物的合成是通过从自动化基环开放聚合物中强制执行正规序列分布
Mengyuan Wen1, WeiNian Wong1, Tanja Junkers1
1Polymer Reaction Design Group, School of Chemistry, Monash University 17 Rainforest Walk Clayton VIC 3800 Australia tanja.junkers@monash.edu.
Chemical science
|September 26, 2025
概括
这项研究引入了半批合聚的贝叶斯优化方法,有效控制单体料,以防止成分漂移. 这种普遍适用的技术不需要先前的动力数据,使得精确的聚合物序列分布控制.
科学领域:
- 聚合物化学 聚合物化学
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
背景情况:
- 同聚合物经常遭受由于不同的单体反应率的组成漂移.
- 这种偏移导致不均的聚合物特性,并限制了材料设计.
- 现有的方法需要大量的动力数据或特定系统的模型.
研究的目的:
- 开发一种普遍适用的方法来控制共聚化中的组合漂移.
- 为了能够精确调节聚合物序列分布,而无需事先的动力学知识.
- 证明创建统计均和定制组合流动的方法.
主要方法:
- 在半批量共聚化过程中,对单体料的连续贝叶斯优化.
- 在没有预先存在的动力模型的情况下在线监测反应.
- 适用于各种共聚合物系统,包括烯酸盐,甲烯酸盐,烯,以及激光环开放共聚化.
主要成果:
- 它成功地抵制了多种多重聚合物的组成漂移,实现了完美统计和均的分布.
- 证明了对聚合物序列分布的精确控制.
- 通过通过控制漂移进行具有挑战性的共聚合,展示了完全可降解材料的合成.
- 允许在需求时创建非自然组成的漂流.
结论:
- 开发的贝叶斯优化方法提供了一个一般的,无模型的方法来控制共聚合物组成的漂移.
- 这种技术有助于设计具有量身定制性质的先进聚合物,并为可持续材料开辟了道路.
- 该方法的多功能性扩展到创建定制的聚合物架构,而不仅仅是简单的漂移校正.
相关概念视频
Radical Chain-Growth Polymerization: Mechanism
3.4K
The radical chain-growth polymerization mechanism consists of three steps: initiation, propagation, and termination of polymerization. The polymerization initiates when a free radical generated from the radical initiator adds to the unsaturated bond in the monomer. The unpaired electron of the free radical and one π electron in the unsaturated bond creates a σ bond between the free radical and the monomer. As a result, the other π electron in the unsaturated bond converts this species into...
3.4K
Free-Radical Chain Reaction and Polymerization of Alkenes
9.4K
The conversion of alkenes to macromolecules called polymers is a reaction of high commercial importance. The structure of the polymer is defined by a repeating unit, while the terminal groups are considered insignificant. The average degree of polymerization represents the number of repeating units in the polymer molecule and is denoted by the subscript n.
9.4K
Radical Chain-Growth Polymerization: Chain Branching
2.4K
The skeletal structure of polymers synthesized via radical polymerization is always branched. For example, the polymerization of ethylene by radical polymerization results in a low-density grade of polyethylene with a heavily branched skeletal structure. Here, the radical site abstracts hydrogen from the growing chain, and the radical site shifts from the end (a primary carbon center) to anywhere within the growing chain (a secondary carbon center). Consequently, the part of the chain from the...
2.4K
Radical Chain-Growth Polymerization: Overview
3.1K
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...
3.1K
Olefin Metathesis Polymerization: Ring-Opening Metathesis Polymerization (ROMP)
3.1K
Ring-opening metathesis polymerization or ROMP involves strained cycloalkenes as starting materials. The mechanism of ROMP proceeds by reacting cycloalkene with Grubbs catalyst to give metallacyclobutane intermediate which undergoes a ring-opening reaction to form new carbene. The new carbene reacts with another molecule of cycloalkene. Repetition of these steps leads to the formation of an unsaturated open-chain polymer product. All these steps are reversible, however, relieving the ring...
3.1K
Ziegler–Natta Chain-Growth Polymerization: Overview
3.9K
Ziegler–Natta polymerization is another form of addition or chain‐growth polymerization used for synthesizing linear polymers over branched polymers. The catalyst used for polymerization is the Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, who developed it in 1953. This catalyst is an organometallic complex of titanium tetrachloride and triethyl aluminum, with the active form of the catalyst being an alkyl titanium compound. Using the Ziegler–Natta...
3.9K


