ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Haibin Zhao,Xuerui Zang,Yuanyuan Shen,Ming Tan,Peng Wang,Jiajia Wu
High transparency and durable antifouling surfaces are crucial for Marine applications. However, achieving a long-lasting marine coating that combines both antifouling properties and high transmittance remains a significant challenge. In this study, we present a novel high-adhesion, self-healing Slippery Liquid-Infused Porous Surface (SLIPS) antifouling coating with a unique three-arm structure, designed from a poly(dimethylsiloxane) supramolecular polymer, inspired by the design of natural spider webs. This structure leverages multistrength dynamic hydrogen bonds, including a quadruple hydrogen bond motif, the 2-ureido-4-pyrimidinone (UPy) unit. The three-arm structure enhances adhesion by providing additional binding sites, which facilitate interactions with interfacial groups through the dynamic rearrangement of UPy units. Importantly, the coating exhibits enhanced chain mobility due to the placement of UPy units on the side chains, resulting in a self-healing efficiency of 80% after 24 h in underwater environments. This performance is substantially higher than that of coatings with UPy units in the main chain, which achieve only 30% efficiency. Furthermore, the prepared coating not only exhibited improved transparency (∼93.9%) but also demonstrated flexibility, antifouling properties, and resistance to biological contamination. The design strategy presents a promising solution for manufacturing multifunctional materials with tailored features and intricate structures. These materials demonstrate strong self-cleaning and antifouling properties, suitable for use in harsh conditions, including applications like self-cleaning windows and optical sensor protection.
研究领域:
材料科学
·
海洋生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Omega
·
2018
·
IF 0
Jingcheng Liu,Jiancheng Cao,Zhen Zhou,Ren Liu,Yan Yuan,Xiaoya Liu
Two series of ultraviolet (UV)-cured self-healing polyurethane (PU) oligomers were synthesized through a prepolymer process from isophorone diisocyanate (IPDI) or 1,6-hexamethylene diisocyanate (HDI), polycarbonate diol (PCDL) of varying molecular weight (500, 1000, and 2000 Da), and chemically modified cyclotriphosphazene as hard cores were introduced. The synthesized oligomers contained rigid aromatic rings as “hard cores” and long fatty chains as “flexible arms”. Nuclear magnetic resonance spectrometer (H NMR) and Fourier transform infrared spectroscopy were used to characterize the structures of the oligomers. In addition, the UV-cured self-healing PU coatings were prepared by designing some coating formulations with the PU oligomers. The self-healing properties and mechanical properties of the UV-cured coatings were investigated. The results revealed that the coatings had self-healing properties based on hydrogen bonds. As the molecular weight of PCDL decreased, the coatings exhibited increased hardness, tensile strength, and glass transition temperature. Furthermore, the coatings exhibited excellent thermostability. The results proved the application prospects of the self-healing coatings with high repair efficiency and excellent mechanical properties.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
PubMed
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
·
2023
·Vol. 33
·期 7
·075007
·
IF 2.3
Jianqiang Han,Weihua Sun
Front-side releasing suspended structures made using bulk micromachining processes have the advantages of simplifying vacuum or hermetic packaging processes and reducing squeeze-film damping. This paper studies the effect of doping concentration on the etching rate (ER) of the (111) plane. The experimental results show that increasing the boron doping concentration (but to less than the self-stop etching concentration) significantly increases the ER of the (111) plane and the ER ratio of the (111) and (100) planes. This phenomenon is used to speed up the undercutting and release <110> oriented clamped–clamped beams, which can be used as piezoresistive sensitive elements. The etching depth when the microbeams have just been released and the silicon wedges under single beams, double beams and triple beams disappear is deduced and verified by experiments. This has a certain guiding significance for designing piezoresistive sensors.
研究领域:
微机电系统
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半导体工艺
·
传感器技术
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2018
·Vol. 135
·期 21
·46312
·
IF 1.901
Yangyang Zhao,Fuwei Nian,Hao Pang,Jianheng Huang,Hongwei Zhao,Kun Wang,Bing Liao
Star-shaped superplasticizers, which incorporated polyol ester with unsaturated bond at their cores and bore comb-type structures as their arms were synthesized via esterification-copolymerization in aqueous phase from pentaerythritol, acrylic acid (AA), and isopentenyl oxy poly(ethylene glycol ether) (TPEG). The monomer ratios of AA and TPEG were varied and comonomer sodium methallyl sulfonate (SMAS) bearing short side chains was added to regulate the arm structure of star-shaped polycarboxylate superplasticizers (SPCEs). The effects of the SPCEs on cement paste were investigated and the cement dispersion as well as early hydration mechanism were explored. As a main result, SPCEs with SMAS and certain molar ratios for anchoring groups and PEO side-chains in their arm structure exhibited good paste dispersion and fluidity retention, which also delayed the early hydration process and prolonged both the initial and the final setting time. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 46312.
研究领域:
材料科学
·
土木工程
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产品关联
DOI
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 28
·15604-15612
·
IF 2.936
Na Xu,Xiaobei Huang,Guangfu Yin,Meijiao Bu,Ximing Pu,Xianchun Chen,Xiaoming Liao,Zhongbing Huang
In contrast with traditional chemotherapy, controlled drug delivery systems provide many advantages. Herein, a thermosensitive star polymer pompon with a core–arm structure was synthesized using a grafting-on method as a thermo-responsive controlled release drug carrier. Single-chain cyclized/knotted poly tetra(ethylene glycol) diacrylate (polyTEGDA) was used as the hydrophobic core, and thermosensitive linear poly(N-isopropylacrylamide-co-N-methylolacrylamide) (poly(NIPAM-co-NMA)) was selected as the hydrophilic arm. Below or above its lower critical solution temperature (LCST), the linear poly(NIPAM-co-NMA) grafted onto the polyTEGDA core adopted a stretched or curled status, respectively, then the drug could be loaded in or extruded out. The LCST of star polyTEGDA-b-poly(NIPAM-co-NMA) was adjusted to slightly above body temperature (37 °C). The antitumor drug doxorubicin (DOX) was successfully loaded into the pompons with a high loading capacity of 19.45%. The cumulative release of DOX from loaded pompons in vitro for 72 hours was 71% and 20.7% at 42 °C and 37 °C, respectively, indicating that the excellent temperature-controlled release characteristics result from the unique thermo-responsive extrusion effect. Moreover, DOX loaded polyTEGDA-b-poly(NIPAM-co-NMA) pompons achieved better antitumor ability against ovarian carcinoma SKOV3 cells at 42 °C compared with that at 37 °C. These results suggest that star polyTEGDA-b-poly(NIPAM-co-NMA) pompons have considerable promise as thermo-responsive controlled drug delivery carriers.
研究领域:
生物材料学
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药物递送系统
·
肿瘤治疗
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Coatings Technology and Research
·
2018
·Vol. 16
·期 1
·179-188
·
IF 1.619
Yuan Yan,Chen Miao,Zhou Qiaohua,Liu Ren
Multiarm cardanol-based oligomers with a cyclotriphosphazene core were prepared through a nucleophilic substitution reaction; the structures of oligomers were fully characterized and confirmed through Fourier transfer infrared spectrometry, 1 H nuclear magnetic resonance (NMR), 31 P NMR, and gel permeation chromatography. The designed multiarm bio-based acrylates (AECC) were successfully prepared by epoxidizing the unsaturated aliphatic chain of cardanol segments with m -chloroperoxybenzoic acid and acrylating epoxy groups. The synthesized oligomers contain rigid phosphazene/benzene rings as “hard cores” and long aliphatic chains as “flexible shells.” Compared with commercial hyperbranched polyurethane acrylate (CN2302) and acrylated epoxidized soybean oil, cured AECC coatings and films exhibited not only greater hardness, excellent adhesion, higher glass transition temperatures, and excellent mechanical properties but also good thermal stability and biodegradability. We successfully obtained a high-performance UV-curing resin that has a high biorenewable material content and can meet basic daily requirements.
研究领域:
材料科学
·
化学工程
·
可再生资源利用
✓ 已验证
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2024
·Vol. 171
·期 5
·053507
·
IF 3.1
Wenzheng Wu,Xiaojie Tang,Jing Wang,Chenghan Zhao
With the rapid development of electronics, additive manufacturing of complex three-dimensional microscale metal and alloy structures has emerged as one of the future directions for advanced technologies. In this study, a localized electrochemical deposition technique was developed which enables the fabrication of microscale three-dimensional metal structures in an ambient environment. Notably, we investigated the effects of voltage, initial electrode gap, and electrolyte composition on the deposition of Cu-Ni alloy. Furthermore, we successfully fabricated Cu-Ni equiatomic micro-columns, providing possibilities for the micro/nanoscale fabrication of commercial K-Monel copper. Finally, based on these foundations, we successfully shaped overhanging structures with various angles as well as an "H" structure using a rotating cathode substrate, demonstrating their potential in the fabrication of Cu-Ni alloy micro components.
研究领域:
材料科学
·
电化学
·
微制造
·
增材制造
✓ 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）