通过纤维素纳米纤维提高印刷蚕丝纤维素-聚缩水甘油醚甲基丙烯酸酯复合水凝胶的再现性和抗压强度

IF 0.7 4区 材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Strength of Materials Pub Date : 2024-02-28 DOI:10.1007/s11223-024-00610-2
L. Rova, M. Saito, H. Kurita, T. Kanno, A. Gallet-Pandellé, F. Narita
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引用次数: 0

摘要

蚕丝纤维素(SF)是一种天然聚合物,具有极佳的生物相容性和机械性能,人体降解性适中,因此是再生医学的理想候选材料。蚕丝纤维素和聚乙二醇甲基丙烯酸酯(PEGDMA)(一种生物相容性聚合物)的复合材料作为再生医学支架材料备受关注。据作者所知,SF-PEGDMA 复合水凝胶迄今为止尚未使用光学制造方法制造过,其降解过程中的抗压性能变化也尚未研究过。此外,SF-PEGDMA 水凝胶中还添加了纤维素纳米纤维(CNF),这是一种源于植物的纳米材料,具有优异的机械性能和生物相容性。利用数字光处理技术对 SF-PEGDMA 复合水凝胶进行了三维打印。所获得的水凝胶在纯水或磷酸盐缓冲溶液中储存的抗压强度暂时上升,4 天后下降。但 7 天后,强度下降到与不含 CNF 的试样相似的水平。在成型性测试中,模型的再现性随光照强度和 CNF 浓度的变化而变化。
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Reproducibility and Compressive Strength Enhancement of Printed Silk Fibroin–Polyethylene Glycidyl Methacrylate Composite Hydrogels Via Cellulose Nanofibers

Silk fibroin (SF) is a natural polymer with excellent biocompatibility and mechanical properties and moderate human body degradability, making SF an interesting candidate for regenerative medicine. Composite materials of SF and polyethylene glycidyl methacrylate (PEGDMA), a biocompatible polymer, attract attention as scaffold materials for regenerative medicine. To the authors’ knowledge, SF–PEGDMA composite hydrogels have thus far not been manufactured using optical fabrication methods, and the change in their compressive properties during their degradation has not been studied. In addition, cellulose nanofiber (CNF), a plant-derived nanomaterial with excellent mechanical properties and biocompatibility, was added to the SF–PEGDMA hydrogels to enhance their mechanical properties. SF–PEGDMA composite hydrogels were three-dimensionally printed using digital light processing. The compressive strength of the obtained hydrogels stored in pure water or phosphate buffer solution temporarily increased and decreased after 4 days. However, after 7 days, the strength decreased to a level similar to that of the specimens which did not contain CNF. In the formability tests, the reproducibility of the model changed with the intensity of the light and the CNF concentration.

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来源期刊
Strength of Materials
Strength of Materials MATERIALS SCIENCE, CHARACTERIZATION & TESTING-
CiteScore
1.20
自引率
14.30%
发文量
89
审稿时长
6-12 weeks
期刊介绍: Strength of Materials focuses on the strength of materials and structural components subjected to different types of force and thermal loadings, the limiting strength criteria of structures, and the theory of strength of structures. Consideration is given to actual operating conditions, problems of crack resistance and theories of failure, the theory of oscillations of real mechanical systems, and calculations of the stress-strain state of structural components.
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