CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Tao Wu,Zhiwen Jia,Yufang Meng,Jiamin Ye,Wanyu Li,Yan Sun,Junyu Li,Linghao Li,Zerong Liu,Shiyang Wang,Xiwei Xu
Lignin-based adhesives have the advantages of high economy and low formaldehyde emission, and are widely used in furniture manufacturing, woodworking, paper making and other industries. In this study, bagasse was pretreated by supramolecular deep eutectic solvent (DES) formed by the natural compounds β-cyclodextrin and L-malic acid, and a green lignin-based adhesive (ALDES) with wide temperature adaptability (−196 to 100 °C), which can be used in many materials (such as metals, woods, and ceramics) and resistant to solvent corrosion (9 kinds of solvents) was prepared by component separation. The results showed that the adhesive strength of ALDES with moral ratio of 1:40 for wood panels reached 5.14 MPa at a curing temperature of 170 °C and a curing time of 12 h. In addition, a combination of experimental results and DFT calculations revealed that the main factor of high adhesion performance of ALDES was lignin promoted the formation of ether bond and the enhancement of electrostatic potential energy. Furthermore, the use of natural raw materials and a pretreatment process that generates no waste provides exceptional economy and environmental friendliness. This novel synthesis of lignin adhesive will provide a new strategy for the development of adhesive field.
研究领域:
材料科学
·
林产化学加工工程
·
绿色化学
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Hong Chen,Jia Yang,Zhuangzhuang Liu,Yiying Li,Ziqing Tang,Xinlei Shi,Qiang Chen
Adhesive hydrogels play a crucial role in numerous applications across fields such as wound dressing, biomedical implants, and flexible electronics. Despite recent efforts on hydrogel design, reconciling the conflicting requirements of adaptability to rough surfaces and intrinsic strength remains elusive for self-adhesive hydrogels. To address this challenge, a novel strategy is proposed where conformal contact between hydrogels and solids is initially established in a weak state, followed by reinforcement to enhance strength and toughness. Illustrating this approach, bovine serum albumin (BSA) is employed to incorporate a flexible synthetic polymer network, resulting in soft and adhesive organohydrogels (OHGs) with instantaneous and reversible adhesion on various substrates, providing fault-tolerant operation convenience. A brief on-demand heating step transforms them into a strong and supra-adhesive state by forming a rigid BSA network and establishing a double network (DN) structure. The resulting BSA based DN OHGs demonstrate remarkably enhanced bulk mechanical strength and exceptional interfacial toughness on diverse nonporous solid substrates, allowing for on-demand permanent fixation. This approach integrates fault-tolerance and permanent fixation into a single material, highlighting the potential of these natural albumin based OHGs as advanced functional materials for diverse applications, including artisanal restoration, and all-season flexible sensors.
研究领域:
生物材料学
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组织工程
·
柔性电子
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Jianben Xu,Yuedong Xing,Liwei Lu,Jiongchao Li,Caili Yu,Faai Zhang
Conventional polymer materials cannot repair hidden cracks that appear during use by themselves, which affects service life and reliability. The reversibility of dynamic covalent bonds provides an effective approach for the sustainable development of materials. In this study, we introduced rosin, a renewable resource, and dimethylglyoxime with an oxime bond into polyurethane elastomers to prepare tough, self-healing rosin-based crosslinked elastomers . Benefiting from their high crosslinking density, the prepared elastomers exhibit excellent mechanical properties (tensile strength up to 13.6 ± 0.5 MPa and toughness up to 21.3 ± 0.6 MJ m –3 ) and solvent resistance . Based on the dynamic reversibility of oxime–carbamate bonds, the elastomers exhibit excellent self-healing properties (97.2 ± 1.1 % self-healing efficiency for 3 h at 80 °C). Furthermore, the elastomers exhibit good adhesion and corrosion resistance . Notably, the addition of rosin improves the elastomers' hydrophobicity and heat resistance in addition to their mechanical properties. These findings suggest that the prepared self-healing rosin-based elastomers have promising applications in self-healing anticorrosive coatings and adhesives.
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
CARBOHYDRATE POLYMERS
·
2019
·
IF 6.044
Qingqing Yu,Weijun Yang,Qianqian Wang,Weifu Dong,Mingliang Du,Piming Ma
In this work, functionalized cellulose nanocrystal (fCNC) was obtained by the grafting of 3-methacryloxypropyltrimethoxysilane coupling agent (γ-MPS) onto CNC. Then acrylic pressure sensitive adhesive (PSA) incorporated with various contents of CNC or fCNC was successfully synthesized by an in-situ emulsion polymerization , and the effects of CNC or fCNC on the sol molecular weight, latex properties, thermal properties, viscoelastic properties, and adhesive performance of the acrylic PSA were investigated. The results illustrated a coinstantaneous improvement of tack, shear strength and peel strength with increasing the loading of both CNC and fCNC. Interestingly, fCNC showed much more improvement than CNC on adhesive performance of acrylic PSA. The fCNC-1/acrylic PSA showed tack of 27#, shear strength of 70 h, and peel strength of 13.4 N/25mm, which were 12.5%, 4%, and 106% higher than those of CNC-1/acrylic PSA and 35%, 100%, and 163% higher than those of neat acrylic PSA, respectively. The superior adhesive performance of the fCNC/acrylic PSA films was supposed to be attributed to better compatibility and dispersion of fCNC in the acrylic copolymer. Thus, this work presents a feasible strategy for utilization of CNC in adhesives and coatings.
研究领域:
材料科学
·
高分子化学
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产品关联
DOI
PubMed
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2021
·Vol. 61
·期 9
·2257-2266
·
IF 2.428
Yunpeng Zhang,Jiaofeng Ye,Dongan Qu,Haitao Wang,Changsheng Chai,Libang Feng
Micro-damage in materials could be repaired by endowing materials with self-healing performance. Herein, an epoxy resin with excellent self-healing performance grounded on thermo-reversible Diels–Alder dynamic chemical reaction was developed. Results showed that the bending strength and adhesive behavior of epoxy resin were influenced dramatically upon treatment with various temperatures. More importantly, damages created in epoxy resin could be repaired completely after suitable heat treatments. What is more, the healed epoxy resin exhibited much higher bending strength and adhesive performance than the pristine one did. The materials could be damaged and then repaired repeatedly. Meanwhile, the as-prepared self-healing epoxy resin exhibited excellent thermal reversibility and controllable adhesion. The thermo-adjusted self-healing performance endowed epoxy resin with recyclable and reusable performance. Therefore, the research made it possible of recycling waste epoxy resins.
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 MEMBRANE SCIENCE
·
2025
·
IF 9
Lang Mingjiao,Luo Jianquan,Wan Yinhua,Wang Xinyan,Chen Xiangrong,Zeng Guangyong
Biofouling is inevitable when reverse osmosis (RO) membrane is applied in water treatment. The adhesion and proliferation of microorganisms on the membrane surface severely degrade the performance of RO membrane, including a sharp decrease in permeate flux, a decline in salt rejection, and a shortened service life. Based on the biofouling mechanism, we designed and prepared a dual-functional RO membrane with excellent antibacterial and anti-adhesion properties by simultaneously grafting ionic liquid and sulfonic acid monomers onto the surface of RO membrane using a simple redox radical polymerization. Compared with the pristine membrane, the water flux of the grafted membrane increased by 13.0%, and the salt rejection slightly increased. Meanwhile, the grafted membrane possessed good antibacterial activity against E. coli and S. aureus . The bacterial mortality rates increased from 20.3% and 80.0% of the pristine membrane to 98.2% and 96.1%, respectively. Comparing the changes in membrane flux and rejection before and after bacterial fouling, the grafted membrane had significant advantages over the pristine membrane. The grafted membrane also exhibited excellent antifouling ability towards bovine serum albumin (BSA), humic acid (HA), and sodium alginate (SA). After 10 h of continuous filtration experiment, the flux decline of membrane for HA and BSA solutions was about 7%, for SA solution about 14%. And the grafted membrane showed good long-term stability in the application of tap water purification. This study provides an innovative path for preparing RO membrane with excellent anti-biofouling capabilities.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2022
·Vol. 14
·期 9
·1673
·
IF 4.967
Pengcheng Yi,Jingrong Chen,Junyao Chang,Junbo Wang,Ying Lei,Ruobing Jing,Xingjiang Liu,Ailing Sun,Liuhe Wei,Yuhan Li
Commercial diol chain extenders generally could only form two urethane bonds, while abundant hydrogen bonds were required to construct self-healing thermoplastic polyurethane elastomers (TPU). Herein, two diol chain extenders bis(2-hydroxyethyl) (1,3-pheny-lene-bis-(methylene)) dicarbamate (BDM) and bis(2-hydroxyethyl) (methylenebis(cyclohexane-4,1-diy-l)) dicarbamate (BDH), containing two carbamate groups were successfully synthesized through the ring-opening reaction of ethylene carbonate (EC) with 1,3-benzenedimetha-namine (MX-DA) and 4, 4′-diaminodicyclohexylmethane (HMDA). The two chain extenders were applied to successfully achieve both high strength and high self-healing ability. The BDM-1.7 and BDH-1.7 elastomers had high comprehensive self-healing efficiency (100%, 95%) after heated treatment at 60 °C, and exhibited exceptional comprehensive mechanical performances in tensile strength (20.6 ± 1.3 MPa, 37.1 ± 1.7 MPa), toughness (83.5 ± 2.0 MJ/m3, 118.8 ± 5.1 MJ/m3), puncture resistance (196.0 mJ, 626.0 mJ), and adhesion (4.6 MPa, 4.8 MPa). The peculiar mechanical and self-healing properties of TPUs originated from the coexisting short and long hard segments, strain-induced crystallization (SIC). The two elastomers with excellent properties could be applied to engineering-grade fields such as commercial sealants, adhesives, and so on.Keywords:carbamate-containing chain extenders;high strength;high self-healing ability;adhesive properties
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2022
·
IF 7.693
Chuanqiang Li,Haobo Wang,Chaoliang Fu,Shaosong Shi,Quan Liu,Peixin Xu,Qizheng Liu,Dan Zhou,Ying Cheng,Lin Jiang
The loss of adhesion is one of the primary mechanisms of water damage in asphalt mixes containing waste glass powders (WGPs), which is mainly attributed to the smooth surface of the glass may undermine the bitumen–aggregate adhesion and accelerate the stripping. In this study, the WGPs surface was roughened by different types and content of silane coupling agent (SCA), and the surface modification mechanism was illustrated based on the chemical reaction process. Then the adsorption capacity of WGPs on SCA was studied through UV–vis tests, and the effects of the SCA on the chemical composition of WGP and asphalt were investigated by FT-IR tests. At the same time, the adhesion performance between modified WGPs and asphalt was studied by the sessile drop test and column wicking test. Furthermore, the immersion Marshall tests were completed to study the water stability of the asphalt mixture after the replacement of filler with modified WGPs. Results show that the optimal modified time of WGPs is 75 min. During the modified process, a ≡Si-O-Si≡ skeleton structure is generated between the SCA and WGPs, and the amino group in SCA reacts with the carboxylic acid of the asphalt to form a new chemical bond. In addition, adding 10 % KH550 SCA to modify the WGPs will provide the most superior improvement for the adhesion work, stripping work and water stability.
研究领域:
材料科学
·
土木工程
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 139
·期 44
·e53103
·
IF 3.057
Hao Xing,Yanyu Mao,Yang Yang,Chunyan Qu,Dezhi Wang,Xupeng Fan,Liwei Zhao,Dongpeng Zhou,Changwei Liu
In response to the theme of environmental protection and green development in the world in the recent years, waterborne epoxy resin has received more and more attention. Waterborne epoxy resin has lower toxicity, but its low toughness limits the application range of waterborne epoxy resin. Here, we first proposed a method of toughening waterborne epoxy resin with aqueous polyamide salt solution. In this article, a series of waterborne polyamic acid salts is used as modification polymer to improve the high-temperature resistance and other properties of waterborne epoxy resins by copolymerization modification. Waterborne polyamic acid salt is dispersed uniformly in the epoxy resin. After curing, by compared with the pure epoxy resin, a semi-interpenetrating network is formed, the cross-linking density and the high-temperature resistance of the material are increased, and the glass transition temperature increases from 105°C to 116°C. The storage modulus at 300°C increases from 6.15 to 15.76 MPa. Thermogravimetric Analysis results reveal that the corresponding temperatures of 5% and 10% weight loss increase from 403°C and 419°C to 415°C and 435°C, respectively. At the same time, the toughness of the imide chain segment and polar groups lead to the improved adhesion of the epoxy system, the peeling strength increase from 0.51 to 1.24 N cm −1 , and the lap shear strength at high temperature (100°C) increase from 0.58 to 16.97 MPa. The water absorption decreases from 1.51% to 0.66%. The developed waterborne epoxy resin is expected to be used as a high-temperature waterborne epoxy coating in high-temperature coatings and other applications.
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
EUROPEAN POLYMER JOURNAL
·
2023
·
IF 6
Weiming Yang,Quanxi Yi,Fanqi Liu,Xianjie Pan,Yanning Zeng
Epoxy vitrimers with robust mechanical properties, facile self-healing and recycling are highly desired and maintain a challenge. In the present work, a series of novel itaconic acid (IA) based epoxy vitrimers incorporated dynamic β- hydroxy ester bonds and boronic ester bonds were successful fabricated using IA derivate with double terminal epoxy and 2,2′-(1,4-phenylene)bis[5-methyl-1,3,2-dioxaborinane-5-carboxylic acid] (BDCB) with two carboxyl groups by a reaction between epoxy and carboxyl. The obtained IA-based epoxy vitrimer possesses comparable thermal stability ( T 5d = 255 °C) and mechanical properties (tensile strength = 68.3 MPa), elongation at break = 16.8 % and toughness = 6.43 MJ·m −3 ) to conventional epoxy resins, due to the rigid network frameworks. Meanwhile, the IA-based epoxy vitrimer show excellent self-healing, welding, physical reprocessing and chemical recycling due to the rearrangement of network typology by thermally-induced dioxaborolane metathesis and transesterification. The self-healing efficiency of the surface scratch reaches 100% at 150 °C for 2 h. High welding efficiency is observed as high as 84.2%. The mechanical properties of both the reprocessed and the chemical recycled IA-based epoxy vitrimers maintain 85.5% and 78.9% of the original one, respectively. The IA-based epoxy vitrimers can be applied in recycled adhesion with the adhesion strength of 16.2 MPa.
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
PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Chengyu Shi,Jianli Wang,Ying Zhou,Xinyuan Lu,Gang Chang,Aizhao Pan,Ling He
Cultural relics reflect the vitality and creativity of human beings but are being irreversibly damaged with the current protective materials exhibiting high brittleness , easy crack and unsatisfactory protection. We fabricated a POSS-based polymer POSS- g -(PGMA- co -PFMA) 2 with high transparency, high hydrophobicity and adhesive nature by SI-ATRP. In addition to reducing the phase separation during film formation, the POSS-based polymer also improved the transparency (up to 99 %). The protected sandstone presented almost no changes (ΔΕ ⁎ = 1.34) on the chroma compared to the pristine sandstone. The polymer showed good surface hydrophobicity (glass: 100–105°; sandstone: 131°) and adhesive properties (0.44–2.59 MPa) which varied based on solvents. With increasing GMA content, there was gradual increase in the adhesive strength (0.59–2.68 MPa). Meanwhile, the POSS- g -(PGMA- co -PFMA) 2 film presented excellent freeze-thaw resistance and salt tolerance. As a kind of hydrophobic and bonding coating material suitable for harsh environments with high hydrophobic, high transparency, high thermal stability , and durability, it provides a new solution to solve the severe problem of cultural relics protection with a wide application prospect.
研究领域:
材料科学
·
文化遗产保护
✓ 已验证
产品关联
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2024
·
IF 3.2
Yinghui Yuan,Guangli Dong,Yinglin Liu,Lili Tian,Bingyu He,Enliang Zhou,Hong Hao
This study focuses on the surface modification of substrates using a poly(N,N-dimethyl-N-(ethoxycarbonylmethyl)-N-[2′-(methacryloyloxy) ethyl]-ammonium chloride-co-3-(trimethoxysilyl)propylmethacrylate) P(CBMAE-co-TMSPMA) and ethyl orthosilicate (TEOS). By covalently bonding the Si-OH pendant of the copolymer with hydroxyl residues on the material's surface, a stable polymer coating is formed. The properties of P(CBMAE-co-TMSPMA) coatings were evaluated using Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), scanning electron microscope (SEM), and contact angle (CA) meter. The addition of TEOS allows for the regulation of surface roughness. With the increase of TEOS content, the contact angle of underwater oil first increased and then decreased. The water contact angles were 8°, the underwater superoleophobic contact angle reached 168°, and the number of adherent platelets and Escherichia coli were significantly reduced to 7.5% and 5% on the surface of the coating, respectively. After undergoing simultaneous hydrolysis, the superoleophobic contact angle of P(CBMAE-co-TMSPMA)/SiO 2 coating further increased to 174°. These interesting and robust properties make them promising candidates for biomedical applications. Highlights The underwater superoleophobic coating (contact angles of 174°). The P(CBMAE-co-TMSPMA)/SiO 2 coating with excellent resistance to oil adhesion. Solve the hydroxyl residue problem. The coating resistance to E. coli and platelet adhesion.
研究领域:
材料科学
·
生物医学工程
✓ 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）