INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Ximing Yuan,Ruohong Bian,Yan Lyu,Cheng Li,Xiaona Li,Jing Luo,Jiongjiong Li
Tannin-based adhesives have demonstrated promise in decreasing dependence on petrochemical resources linked to formaldehyde-based resins. However, current tannin-based adhesives face challenges due to the incorporation of expensive or toxic reagents such as isocyanate, epoxy, and formaldehyde, as well as the inability to be recycled. This study presents a simple and eco-friendly approach for producing a tannic acid-based recyclable adhesive (TA-BVB) by employing tannic acid and 1,4-butanediol divinyl ether through acetal reactions. The resulting adhesive can be cured at a low temperature of 70℃ and demonstrated high bonding strength on wood and aluminum sheets, measuring 4.45 MPa and 5.44 MPa, respectively. Notably, the adhesive maintained its adhesion strength even under harsh conditions, including high temperatures (100℃), liquid nitrogen (-196℃), and exposure to various solvents. Moreover, the adhesive showcased excellent reusability, retaining over 100 % and 86 % of bonding strength after the first and second rounds of hot pressing, respectively. This adhesive can be repaired using infrared laser irradiation and displayed remarkable mold resistance. This research underscores the potential of tannic acid in developing environmentally friendly, high-performance, recyclable adhesives with versatile applications.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2024
·
IF 5.3
Zhongying Xu,Xuewen Cao,Junyi Jiang,Xuerui Zang,Pengshen Wang,Haopeng Zhang,Michal Slaný,Jiang Bian
Addressing the urgent need to mitigate pipeline obstruction caused by natural gas hydrate adhesion we present a novel approach utilizing a spin coating/spray coating technique to develop an effective anti-adhesion coating. Drawing inspiration from the three-layer structure of cat claws, this coating was meticulously characterized alongside modified nanoparticles using XRD , XPS, SEM , and AFM. Assessment of cyclopentane hydrate adhesion employed micromechanical force technique, while the stability of the coating underwent rigorous scrutiny through sand washing tests. Additionally, the proportion of the buffer layer was fine-tuned using Abaqus finite element simulation software. Furthermore, electrochemical methods were employed to evaluate the coating's corrosion resistance . Moreover, we propose a molecular dynamics model for the developed TBPC coating, dissecting its anti-adhesion and anti-corrosion properties. Comparative analysis revealed a remarkable 99.2 % reduction in adhesion force compared to the bare steel surface of X65. Following a 70-day immersion in a 3.5 wt% NaCl solution, the impedance value was measured at 5.5 × 10 6 Ω·cm 2 . Notably, the coating exhibited exceptional superhydrophobic characteristics, with a contact angle of 166.4° and a rolling angle of 6.9° under ambient temperature and pressure conditions. This innovative strategy promises to enhance pipeline hydrodynamic efficiency, reduce energy consumption and ensure the safe transport of hydrates.
研究领域:
材料科学
·
表面工程
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Shilong Zhang,Chaobo Jiang,Ce Wang,Jialiang Li,Yuqi Ma,Yanling Zhu,Hua Deng,Yongsheng Zhao,Guangcheng Zhang
As a traditional block copolymer-type elastomer, the poly(styrene–butadiene–styrene) SBS elastomer has limited properties like weak heat/solvent/creep resistance and adhesive performance. In this work, the “melt-blending and ultraviolet (UV) post-treatment” method was used to activate a thiol–ene reaction between thiol-terminated boronic ester cross-linkers (BDB) and vinyl groups of SBS chains. In this way, it can effectively incorporate a dynamic boron–oxygen (B–O) network into SBS elastomers. When increasing the BDB content from 1 to 10 wt %, the gel content of SBS vitrimers varies from 18.76 to 83.91%. At the same time, the glass transition temperature (Tg) of the PB phase in SBS vitrimers increases from −87.87 to −73.25 °C and a rubbery plateau appears instead of an instant rupture when the temperature rises above the Tg of the PS phase. The stress relaxation behavior of all SBS vitrimers shows an Arrhenius-type temperature dependence, and the estimated bond-exchange activation energy (Ea) of SBS-BDB10 was 52.28 kJ/mol. Compared to the pure SBS elastomer, SBS vitrimeric elastomers show an increased Young’s modulus, creep resistance, and self-healing properties and maintain their rubber elasticity. Furthermore, the adhesive property to the metal was notably improved, achieving a lap-shear strength of up to 1.83 MPa. Therefore, it is demonstrated to obtain good reprocessability and improved physical properties via fabricating SBS vitrimers with dynamic B–O networks.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Xiankun Wu,Min Li,Xiaolong Chen,Pengfei Xiong,Huihui Gao,Haonan Li,Shujun Zhao,Zhongkai Wang,Zhong Wang
Given the rapid advancements in ocean engineering, wind power generation, and related fields, it is imperative to develop highly integrated coatings characterized by robust mechanical toughness, efficient self-healing capabilities, and self-cleaning functionalities to prolong the service life of the equipment. However, a formidable challenge encountered in self-healing coatings arises from the inadequate interfacial interaction between the polymer and the substrate, which results from the rapid segmental movement of molecular chains. Furthermore, the integration of multiple functionalities (such as liquid repellency, adhesive capability, scratch resistance, etc.) within self-healing coatings poses a constraint on current development efforts. Herein, we developed a method for preparing fluorine-free biobased water-repellent coatings using eco-friendly plant oils and eugenol. The obtained coatings exhibit excellent intrinsic mechanical performance and extraordinary room temperature autonomous healing efficiency. Remarkably, the coatings also provided unprecedented interfacial strength (shear strength: 11.82 MPa, peeling strength: 1841.4 N m–1) and stable adhesion performance even under water. This judicious design strategy offers a versatile and scalable approach to producing multifunctional coatings and devices tailored for desired functionalities in demanding service conditions. The coatings find application in sustainable antifouling, electronic device protection, and biomedical fields.
研究领域:
材料科学
·
海洋工程
·
可持续发展
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2020
·
IF 3.862
Wei Li,Zhengyu Yu,Youkang Wu,Qian Liu
Fulfilling high-valued utilization of feather wastes will favor overcoming environmental issues and promoting the poultry farmers’ income. This study developed a new bio-based protein sizing agent [feather protein- g -poly(sodium allyl sulfonate) (FP- g -PSAS)] with high adhesion capacity to viscose and cotton fibers at low temperature, through graft copolymerization of feather protein with SAS monomer by building an ammonium persulfate (APS)/ SH groups (on the protein chains) redox system. Fourier transform infrared (FTIR) spectroscopy and energy dispersive x-ray spectrometer (EDS) demonstrated the successful preparation of FP- g -PSAS samples. The samples were also characterized by scanning electron microscopy (SEM), thermogravimetric (TG) and x-ray diffraction (XRD). Viscosity, water-solubility, light transmittance and adhesion of the samples were investigated. The FP- g -PSAS exhibited high water-solubility and light transmittance. Compared with feather protein, an increased viscosity and an improved adhesion to both fibers for FP- g -PSAS samples were exhibited at 60 °C. With the rises in grafting ratios, viscosity and adhesion strengths to both fibers gradually increased. The FP- g -PSAS samples had the similar adhesion strengths in comparison with the modified starches investigated in our previous works. These results indicated that FP- g -PSAS showed the potential in the application of viscose and cotton warp sizing at a low temperature of 60 °C.
研究领域:
材料科学
·
纺织工程
·
环境科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2019
·
IF 4.784
Lili Wang,Xun Zhang,Jin Xu,Qiang Wang,Xuerong Fan
The effect of starch-g-poly(acrylamide) (S-g-PAM) molecular structure on sizing properties has been investigated. S-g-PAMs were synthesized with the catalysis of horseradish peroxidase (HRP) and Fourier transform infrared (FT-IR) confirmed the acrylamide (AM) units had been successfully grafted on starch chains. Structural parameters, including degree of branching (DB), degree of substitution (DS) and grafting ratio (GR) were characterized by 1 H nuclear magnetic resonance ( 1 H NMR), and were correlated with sizing properties of apparent viscosity, adhesion to cotton yarns and film mechanical properties. The apparent viscosity of S-g-PAMs has no obvious correlation with DB and DS (or GR), as the amylose content of the native starch might have more influence on the viscosity of grafted starches. DS (or GR) values of grafted starches have a positive relationship with the tensile strength of sized cotton yarns and are negatively related with tensile strength of starch film. These results can provide guidance in the section of starch with improved sizing properties.
研究领域:
高分子化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
GIANT
·
2024
·
IF 5.4
Xinqiang Xu,Pan Jiang,Di Liu,Yang Lyu,Xinyan Shi,Zhongying Ji,Xiaolong Wang
Ionic conductive hydrogels (ICHs) have emerged as a landmark soft material for a wide range of applications, such as flexible wearable sensors and electronic skins. However, to achieve a super-stretchability, high strength, and self-adhesion simultaneously by 3D printing remains a significant challenge. In the construction of a hydrogel, ionic liquids (ILs) and tannic acid (TA) have been successfully introduced in the copolymerization of acrylamide (AAm) and poly(ethylene glycol) (diol) diacrylate (PEGDA) to form a p(AAm-co-PEGDA) hydrogel (PAP) system. The PAP hydrogel showed super-stretching (4300%), high strength, and self-adhesion properties. More specifically, the 3D printing of the ICHs provided an effective and flexible way to manufacture flexible wearable sensors, thus greatly simplifying the device fabrication process. In addition, the sensors could be specified by a customized production and were, thus, adapted to a wider range of applications. It is believed that the here presented hydrogel integration with 3D printing will inspire new ideas on how to prepare novel flexible sensors, thus promoting further research on the construction of electronic skins, human-computer interactions, and advanced materials.
研究领域:
材料科学
·
生物医学工程
·
柔性电子
✓ 已验证
产品关联
DOI
高影响因子
Materials Research Express
·
2019
·Vol. 6
·期 11
·1150b7
·
IF 1.449
Tariq Aziz,Hong Fan,Xiangwei Zhang,Farman Ullah Khan
In this study we have explored the adhesive properties of the modified epoxy resin. The modified epoxy resin was prepared by mixing cellulose nano-crystals (CNCs) and calcium sulfate fillers (CaSO4 fillers) with epoxy resin via sonication technique. The successful synthesis of the modified epoxy resin was characterized by infra-red transformed (FT-IR) spectroscopy. The characteristics peaks appeared at 880 cm−1 and 1052 cm−1 were assigned to –CH bending and –Si–O–C bending vibration. The appearance of these peaks confirmed the successful synthesis of the modified epoxy resin. The surface morphology, size and shape of CNCs, CaSO4 fillers and modified epoxy resin were examined by atomic force microscope (AFM), scanning electron microscope (SEM) and transmission electron microscope (TEM). The thermal stability of the CNCs, CaSO4 fillers and modified epoxy resin was investigated by thermal gravimetric analysis (TGA). The thermal decomposition for the modified epoxy resin was occurred at 370 °C. The adhesive properties including tensile modulus, strength and elongation at break of CNCs, CaSO4 fillers and modified epoxy resin were determined by using universal material testing machine. The obtained results showed remarkable improvement in the adhesive properties of the modified epoxy resin.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
·
2019
·
IF 1.21
Cheng Fang,Zining Liu,Xinbao Zhu,Yunfeng Cao,Xiaohong Dong
n-Dodecyl mercaptan (DDM) chain transfer agent and 1,6-hexanediol diacrylate (HDDA) cross-linker were used to manipulate latex properties in a monomer-starved seeded semi-continuous emulsion polymerization of butyl acrylate (BA), fluorine monomer dodecafluoroheptyl methacrylate (DFMA) together with acrylic acid (AA) and 2-hydroxyethyl acrylate (HEA). The influences of both DDM and HDDA on the particle size of the latex, as well as on the gel content, thermostability (differential scanning calorimeter and thermal gravimetric analysis), surface properties (X-ray photoelectron spectra (XPS), contact angle analysis and atomic force microscopy), and viscoelasticity (N,N-dimethylacrylamide) of the polymer films were investigated. The results showed that the introduction of DDM and HDDA has no significant effects on the final particle size of the fluorinated pressure-sensitive adhesives (PSA) latexes. XPS analysis indicated that the fluoroalkyl groups had the tendency to enrich on the surface of the film. However, this enrichment of fluorine on the film surface was reduced after the introduction of HDDA, while increased with the addition of DDM. It was also found that the gel content, glass transition temperature (Tg), thermal stability, surface roughness, and modulus (G′, Gʺ) of the fluorinated latex PSA were all increased with the introduction of HDDA. Nevertheless, opposite trends were observed for the latex after the addition of DDM. Finally, the effects of DDM and HDDA on the adhesive properties (i.e. loop tack, peel strength and shear strength) of the fluorinated latex PSA were also evaluated.
研究领域:
材料科学
·
高分子化学
✓ 已验证
DOI
高影响因子
Frontiers in Bioengineering and Biotechnology
·
2021
·
IF 5.89
Teng Rui,Meng Yuchen,Zhao Xiaodan,Liu Jie,Ding Rui,Cheng Yilong,Zhang Yunhe,Zhang Yanfeng,Pei Dandan,Li Ang
Preformed crowns are preferred to reduce the failure risk of restoration of primary teeth, but some drawback of conventional material is still a main barrier for their clinical use. Polyether etherketone (PEEK), a tooth colored, high-performance thermoplastic polymer, has been recognized as a promising alternative to manufacture the restoration of primary teeth. However, the hydrophobic surface and low surface energy of PEEK make it hard to establish a strong and durable adhesion. In this study, we have evaluated a modification method of polydopamine (PDA) coating with plasma pretreatment for the PEEK films by physical and chemical characterization, bonding properties, and biocompatibility. The surface properties of PEEK were well-characterized by scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS). The adhesive strength of the PEEK films was greatly improved without significant reduction of the proliferation rate of human gingival fibroblast cells in MTT and Live/Dead assays. Therefore, PDA coating with plasma pretreatment may give a new solution for effective clinical application of PEEK in primary performed crowns.
研究领域:
牙科学
·
材料科学
·
生物医学工程
✓ 已验证
DOI
PubMed
高影响因子
POLYMER
·
2018
·
IF 3.483
Youjun He,Sheng Gao,Zaijun Lu
Mussel adhesive proteins (MAPs) are of an excellent adhesive property . The catechol structure (i.e., 1, 2-dihydroxybenzene) of 3, 4-dihydroxy-phenylalanine (DOPA) plays a key role in MAPs adhesion. Inspired by the MAPs adhesion, we synthesized catechol-based benzoxazine monomers (BOZ-ca) via Mannich reaction of catechol, aniline and paraformaldehyde, and then the polybenzoxazine containing catechol groups (PBOZ-ca) was obtained through the ring-opening polymerization of BOZ-ca in this work. The structure of BOZ-ca was characterized by 1 H NMR, 13 C NMR and FTIR. Interestingly, the DSC results show that the autocatalytic polymerization effect of BOZ-ca owing to the existence of phenolic hydroxyl groups decreases the polymerization temperature of BOZ-ca by ca. 80 °C compared with common benzoxazine monomers. The adhesion study results indicate that the catechol structure of PBOZ-ca increases its lap shear adhesion strength by 53% compared with common benzoxazine monomers, up to ∼2.61 MPa. The introduction of mussel-inspired structure provides a new design routine for the improvement of polybenzoxazine adhesion property.
研究领域:
材料科学
·
生物仿生学
✓ 已验证
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2020
·
IF 4.469
Yeming Xian,Zhixin Kang,Yeqing He
Weak plating performance and poor adhesion between epoxy and silver coatings can restrict the development of miniaturized electronic devices and multi-layer circuits. In this work, we fabricate a novel epoxy-based nanocomposite containing -SH and -NH 2 dual functionalized multi-walled carbon nanotubes (d-MWCNTs), with enhanced adhesive properties towards silver particles. The enhanced adhesion mechanisms are also investigated by 3D profiling, scanning electron microscopy, cross-cut test, and Raman spectroscopy. Introducing d-MWCNTs improved the surface roughness of the nanocomposites, but the improvements become unstable when the d-MWCNTs content exceeded 0.6 g/15 g epoxy. In addition, the d-MWCNTs are found to affect the size and shape of the coated silver particles. Besides, we find that neither NH 2 -dominated nor SH-dominated functionalization improve the adhesion effectively, while a balance proportion of the two (v (-NH2) silane : v (-SH) silane = 4:6) does. These findings may open the door for the simplification and optimization of epoxy-metal plating for multi-layer circuit applications.
研究领域:
材料科学
·
电子工程
✓ 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）