Regulating the Characteristic Networks of Biodegradable Poly(l‑malic acid-ε-caprolactone) Shape-Memory Materials: From Plastics to Elastomers

IF 5.4 2区化学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Biomacromolecules Pub Date : 2025-04-14 DOI:10.1021/acs.biomac.5c00163

Jing Song , Jiali Jiao , Chenguang Jiang , Yaxin Qiu , Defeng Wu

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Abstract

Developing new biodegradable polyesters with well-defined structures is of interest. We reported an attractive two-component aliphatic polyester-based thermoset, which was prepared via the esterification of biomass-derived l-malic acid oligomers and three-arm poly(ε-caprolactone) (3a-PCL) triols. The chemical network formed via the ester bonding and physical network caused by the crystallization of a 3a-PCL arm chain coexist in the thermoset, and the competition of the two characteristic networks leads to a negative correlation between the degree of covalent cross-linking and the degree of crystallization; thereby, the mechanical state of the thermosets can be easily tuned: from the plastic to elastomer state. Moreover, the crystallization temperature and melting point of the thermosets range in 30 °C ∼ 50 °C and −7 °C ∼ 18 °C, respectively, which are favorable for shape morphing as the thermosets are used as shape-memory materials. This work also provides valuable information about tailoring the mechanical and thermal properties of star-shaped polyester-based thermosets.

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调节可生物降解聚l-苹果酸-ε-己内酯形状记忆材料的特征网络：从塑料到弹性体。

开发具有明确结构的新型可生物降解聚酯是人们感兴趣的。我们报道了一种具有吸引力的双组分脂肪族聚酯基热固性材料，该材料是由生物质衍生的l-苹果酸低聚物和三臂聚（ε-己内酯）（3 - pcl）三醇酯化制备的。通过酯键形成的化学网络与3a-PCL臂链结晶形成的物理网络在热固性材料中共存，两种特征网络的竞争导致共价交联度与结晶度呈负相关关系；因此，热固性材料的力学状态可以很容易地调整：从塑料状态到弹性体状态。此外，热固性材料的结晶温度和熔点分别为30°C ~ 50°C和-7°C ~ 18°C，这有利于形状变形，因为热固性材料被用作形状记忆材料。这项工作还提供了有关定制星形聚酯基热固性材料的机械和热性能的宝贵信息。

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文献相关原料

公司名称

产品信息

阿拉丁

stannous isooctanoate

阿拉丁

ε-caprolactone

阿拉丁

LMA

来源期刊

Biomacromolecules 化学-高分子科学

CiteScore

10.60

自引率

4.80%

发文量

417

审稿时长

1.6 months

期刊介绍： Biomacromolecules is a leading forum for the dissemination of cutting-edge research at the interface of polymer science and biology. Submissions to Biomacromolecules should contain strong elements of innovation in terms of macromolecular design, synthesis and characterization, or in the application of polymer materials to biology and medicine. Topics covered by Biomacromolecules include, but are not exclusively limited to: sustainable polymers, polymers based on natural and renewable resources, degradable polymers, polymer conjugates, polymeric drugs, polymers in biocatalysis, biomacromolecular assembly, biomimetic polymers, polymer-biomineral hybrids, biomimetic-polymer processing, polymer recycling, bioactive polymer surfaces, original polymer design for biomedical applications such as immunotherapy, drug delivery, gene delivery, antimicrobial applications, diagnostic imaging and biosensing, polymers in tissue engineering and regenerative medicine, polymeric scaffolds and hydrogels for cell culture and delivery.