Small
·
2024
·
IF 13
Pengpeng Lu,Xin Li,Jingyang Xu,Yong Fan,Jiyu Sun,Yunhong Liang,Limei Tian,Weihua Ming,Luquan Ren,Jie Zhao
The flexible protective coatings and substrates frequently exhibit unstable bonding in industrial applications. For strong interfacial adhesion of heterogeneous materials and long-lasting adhesion of flexible protective coatings even in harsh corrosive environments. Inspired by the interdigitated structures in Phloeodes diabolicus elytra, a straightforward magnetic molding technique is employed to create an interlocking microarray for reinforced heterogeneous assembly. Benefiting from this bio-inspired microarrays, the interlocking polydimethylsiloxane (PDMS) coating recorded a 270% improvement in tensile adhesion and a 520% increase in shear resistance, approaching the tensile limitation of PDMS. The elastic polyurethane-polyamide (PUPI) coating equipped with interlocking structures demonstrated a robust adhesion strength exceeding 10.8 MPa and is nearly unaffected by the corrosion immersion. In sharp contrast, its unmodified counterpart exhibited low initial adhesion and maintain ≈20% of its adhesion strength after 30 d of immersion. PUPI coating integrated with microarrays exhibits superior resistance to corrosion (30 d, |Z| 0.01HZ ≈10 10 Ω cm 2 , R ct ≈10 8 Ω cm 2 ), cavitation and long-term adhesion retention. These interlocking designs can also be adapted to curved surfaces by 3D printing and enhances heterogeneous assembly of non-bonded materials like polyvinylidene fluoride (PTFE) and PDMS. This bio-inspired interlocking structures offers a solution for durably bonding incompatible interfaces across varied engineering applications.
研究领域:
材料科学
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仿生学
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表面工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2012
·
IF 2.103
Xiang-Dong Liu,De-Kun Sheng,Xiu-Mei Gao,Tong-Bing Li,Yu-Ming Yang
A facile and highly efficient method for adhesion improvement of PET/TPU laminates was introduced. A considerable improvement in adhesion was achieved by treating PET fabric with isocyanate (MDI) in toluene solution. Compared with unmodified ones, the maximal peel strength reaches to 2.27 kN/m (up to three times). The fabrics were also treated with NaOH and CDT (corona discharge treatment) and the results were compared respectively. It is considered that the improvement mainly depends on the strengthening of chemical bonding and mechanical interlocking between the fiber and the adhesive matrix. As the difference directly affects the effective transference of the stress (tension force) from matrix to fiber. The failure surface of PET fiber was severely destroyed which could be examined by scanning electron microscopy (SEM).
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2020
·Vol. 8
·期 6
·1482-1488
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IF 5.958
Xiao Liu,Zhihua Song,Zhiqiang Li,Huanrong Li
Although there has been much recent exploration of tough hydrogel adhesion, luminescent hydrogel adhesion thus far has rarely been explored, limiting its further application. Herein, we report an approach to achieve adhesion enhancement via the synergistic effect of metal–ligand coordination and supramolecular host–guest interactions in luminescent hydrogels. Upon the addition of a stitching solution containing a lanthanide (Ln) complex and azobenzene⊂α-cyclodextrin inclusion complex, the adhesion energy between Ln-containing hydrogels greatly increases to 220 J m−2. Our results demonstrate a new strategy to achieve luminescent hydrogel tough adhesion without affecting the hydrogel luminescence behavior.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Bio-Design and Manufacturing
·
2022
·Vol. 5
·期 2
·233-248
·
IF 5.887
Su Tingshu,Zheng Ao,Cao Lingyan,Peng Lingjie,Wang Xiao,Wang Jie,Xin Xianzhen,Jiang Xinquan
Following dental implantation, the characteristic bacterial milieu of the oral cavity may lead to peri-implant inflammation, which can negatively impact osseointegration and cause implant failure. To improve soft tissue sealing around the implant, enhance osseointegration, and improve implant success rates, this paper proposes a composite multifunctional coating (PHG) prepared using gelatin and polydopamine/hydroxyapatite nanoparticles, investigates the effects of this novel coating on cell adhesion, proliferation, antibacterial activity, osteogenic differentiation, and evaluates its immune-related properties. The PHG coating was proved to have satisfactory hydrophilicity and wettability for cell attachment. Furthermore, it improved the expression of adhesion-related genes and proteins in human gingival fibroblasts, indicating its adhesion-promoting effect. Additionally, bone marrow mesenchymal stem cells exhibited strong osteogenic differentiation potential and mineralization on PHG-coated surfaces. Notably, the PHG coating exhibited antibacterial activity against Streptococcus mutans , as well as anti-inflammatory effects, potentially via the regulation of macrophages. Therefore, the proposed PHG coating may promote soft tissue sealing and bone bonding, providing a potential strategy for the surface modification of dental implants.
研究领域:
牙科学
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生物材料
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组织工程
·
免疫学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）