INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Yuming Bo,Anru Guo,Baojiang Hou,Heng Zhao,Baochen Han,Dong Liu
Simultaneously achieving high strength and toughness is a dilemma for most high-performance materials, especially solidified epoxy resins (ERs). Here, we used a sustainably sourced tannic acid (TA) molecule, a natural polyphenol hyperbranched polyester, as both a reinforcing and toughening agent for preparing high-strength epoxy adhesives with increased toughness. Benefiting from a highly branched structure and abundant active phenolic hydroxyl groups, TA molecules can be functionalized as multiple physiochemical cross-linking points for generating high-performance ERs. The optimal TA-modified ER (TA/ER-3) shows a high tensile strength of 112.2 ± 3.6 MPa and a high elongation at break of 3.7 ± 0.20%, illustrating increased tensile strength by 37.2% and elongation at break by 32.4% compared with pristine ERs, respectively. Combining scanning electron microscopy and dynamic mechanical analysis reveals that the TA molecules not only promote the curing and cross-linking reaction of epoxy resin but also possess good interface interaction with the matrix, which tune the cross-linking density and dissipate fracture energy through deformation, resulting in strengthening and toughening ERs. This work offers sustainably sourced additives for developing high-performance epoxy adhesives, which can be extended to reinforce other types of polymers or nanomaterials.
研究领域:
材料科学
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化学工程
·
环境科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Hongjian Gu,Cheng Liu,Qian Liu,Hang Jia,Yue Qiao,Wenqi Zhao,Yousi Chen,Xigao Jian
High-performance polymers that are both high temperature resistant and soluble is significant for the development of high-tech fields. 4,4′-(Thiobis(4,1-phenylene))bis(phthalazin-1(2H)-one) (T-BDHPZ) monomer is synthesized by an efficient two-step method using inexpensive phenyl sulfide and phthalic anhydride as raw materials. A series of novel poly(bisphthalazinone thioether sulfone ketone)s (PBPTSKs) were synthesized via aromatic nucleophilic substitution polycondensation. The structures of PBPTSKs were characterized by NMR and FT-IR. These polymers have glass transition temperatures ( T g s ) in the range of 302–328 ℃, and are soluble in N -methyl-2-pyrrolidone (NMP), pyridine (Py) and 1,1,2,2-tetrachloroethane (TECT), and partially soluble in N , N -dimethylacetamide (DMAc), N , N -dimethylformamide (DMF), dichloromethane (DCM), trichloromethane (TCM) and pyridine. PBPTSK films were prepared by solution casting, and the average light transmittance from 400 to 800 nm of films are all over 70%. PBPTSK boards prepared by hot press molding have outstanding mechanical properties with the tensile strength and the flexural strength of 91–102 MPa and 123–135 MPa, respectively. PBPTSK boards also exhibit excellent high- and low-temperature resistance properties at 290 and −60c, respectively. Moreover, these polymers with bisphthalazinone thioether moiety have outstanding inherent flame retardancy, which pass the V-0 level of the UL-94 test. This provides opportunities to develop high-performance polymers that are both high temperature resistant and soluble, showing great prospects in frontier applications.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2023
·
IF 8.7
Hongli Zhang,Guanghui Wang,Jie Du,Xiangjun Pei,Peng Du,Lihong Zhou
Poor cementation between soil particles is a fundamental cause of soil erosion and desertification. In recent decades, many polymers have been used to cement soil particles and improve the physical and chemical properties of soils. The contributions of polymers with different structures and functional groups to soil improvement vary considerably. In this study, a mixture comprising polyacrylamide (PAM), sodium polyacrylate (PAAS), hydroxypropyl methylcellulose (HPMC), and polyvinyl alcohol (PVA) was investigated to meet the requirements of soil water retention, erosion resistance, and plant growth . The results showed that the time required for the modified soil to reach drought conditions was extended by 4–7 days. The PAM/HPMC, PAM/PVA and PAM/PAAS experimental groups reduced the erosion rate by 99.57%, 98.3% and 96.38%, respectively, compared to that of the control group. The belowground plant biomass was significantly increased by PAM/HPMC, PAM/PAAS, and PAM/PVA, with increases of 115.92%, 145.23%, and 205.67%, respectively. HPMC contributed more to the soil erosion resistance and water-holding capacity, PAAS improved the soil porosity substantially, and PVA significantly increased the plant biomass. The rigid structures of the polymer chains enhanced the structural stability of the soil, and the hydrophilic functional groups increased the hydrophilicity of the amended soil. This study indicates different polymers that may be used to improve soil properties.
研究领域:
土壤学
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环境科学
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产品关联
DOI
PubMed
高影响因子
ACS ES&T Water
·
2024
·
IF 4.8
Kang Xu,Yi Tu,Yanhong Feng,Xiaochun Yin,Guizhen Zhang
This paper presents a highly efficient method for preparing ultrathin, high-strength photocatalytic membranes with a three-layer structure and high-loading catalysts on both sides. The photocatalytic membranes were prepared by simultaneous biaxial stretching using ultrahigh-molecular-weight polyethylene as the matrix, TiO2 nanoparticles as the catalyst (80 wt %), and liquid paraffin as the plasticizer. The mechanical properties of these membranes were tested, and the tensile strength of the membrane with a biaxial stretching ratio of 7 × 7 reached 62 MPa. Three types of dyes, methyl orange, methylene blue, and Congo red, and their mixed solutions were selected as model pollutants to investigate the photocatalytic properties of the prepared photocatalytic membranes. Results show that the 7 × 7 membrane can almost degrade the above pollutants within 100 min. Moreover, this membrane exhibits remarkable stability in cyclic photodegradation tests, with a degradation rate reaching 95.9% after five cycles. This preparation method is anticipated to provide a good carrier for various photocatalysts, making the photocatalytic membrane suitable for a wide range of applications in the treatment of water contamination.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
ANALYST
·
2023
·Vol. 148
·期 8
·1877-1886
·
IF 4.2
Jiahe Huang,Zhengjin Zhou,Chunhong Zhang,Chao Wang,Yanli Zhou,Lijia Liu,Junqing Li,Toshifumi Satoh,Yoshio Okamoto
A novel one-handed helical copoly(phenylacetylene) (CPA) bearing L-proline tripeptide pendants and a few triethoxysilyl residues was synthesized and hybridized into SiO2 porous microspheres (PMSs) during microsphere growth through the hydrolytic polycondensation of ethoxysilyl groups. Nuclear magnetic resonance and Fourier transform infrared spectroscopy results verified the successful preparation of CPA and its hybrid product using SiO2 PMSs. The chiral recognition ability of the resulting CPA with a hybridized-type chiral stationary phase (HCSP) for high-performance liquid chromatography (HPLC) was investigated, revealing its high recognition ability for selected racemates. Moreover, the HCSP showed good solvent tolerability, thus broadening the selection of suitable eluents. The separation effect of the HCSP for the racemate N,N-diphenylcyclohexane-1,2-dicarboxamide (7) improved significantly after introducing CHCl3 in the eluent, resulting in separation factors equivalent or superior to common commercially available polysaccharide-based chiral stationary phases. The proposed preparation strategy provides a new and valuable method for obtaining poly(phenylacetylene)-based HCSPs suitable for a wide range of applications and eluent conditions.
研究领域:
化学
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材料科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
Polymers
·
2021
·Vol. 13
·期 20
·3565
·
IF 4.329
Qian Tao,Julong Zhong,Rui Wang,Yuzhu Huang
Both ionic and enzymatic crosslink are efficient strategies for constructing network materials of high biocompatibility. Here chitosan was modified firstly and then crosslinked by these two methods for complementary advantages. The preparation methods and ionic crosslinkers can regulate the size and uniformity of the multiple-crosslinked nanogels. The multiple-crosslinked nanogels with the smallest size and the best uniformity was selected for the drug delivery. The drug-loading content and encapsulation efficiency were up to 35.01 and 66.82%, respectively. Their release behaviours are correlated with the pH value and the drug dosage. In general, the lower pH value and the lower drug dosage promoted the drug release. With the assistance of several kinetic models, it is found that drug diffusion plays a preponderant role in drug release, while polymer relaxation has a subtle effect. The multiple-crosslink resulting from ionic compounds and enzymes may provide a new perspective on developing novel biocompatible materials.Keywords:multiple-crosslinked nanogel;ionic crosslink;enzymatic crosslink;drug delivery;natural polymeric materials
研究领域:
生物材料学
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药物递送系统
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高分子化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
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2022
·Vol. 37
·期 1
·66-75
·
IF 1.271
Huang Gang,Huang Hao,Zhang Xia,He Junxi,Zhou Chao,Tan Yan,Feng Manman,Lü Chuncheng
Graphene-modified asphalt (GMA) for road application was prepared via using metal-free phthalocyanine-dispersed to modify an SK-70# base asphalt with graphene. The preparation parameters are as follows: the content of graphene is 0.26% based on the mass percentage of absolute ethanol, the content of nonmetal phthalocyanine is 190% based on the mass percentage of graphene, and then the GMA is prepared via unique high-speed shearing with continuing to ventilate nitrogen, which can prevent the aging of modified asphalt in the high-speed shearing process, and effectively evaluate the modifier. The penetration, softening point, force ductility, and fracture energy of GMA were significantly improved based on the base asphalt. Thus, the incorporation of graphene could enhance the base asphalt’s high- and low- temperature stability. The modification mechanism was researched via metallographic microscopy, computed tomography (CT), Fourier transform infrared spectroscopy (FTIR), and atomic force microscopy (AFM). Adsorption and physical dispersion of the asphaltenes and resins in the phthalocyanine-graphene system were confirmed.
研究领域:
材料科学
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化学工程
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土木工程
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2017
·Vol. 41
·期 11
·4637-4643
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IF 3.269
Bing Yu,Hongbo Zhang,Hailin Cong,Chuantao Gu,Lilong Gao,Bo Yang,Muhammad Usman
Porous poly(glycidylmethacrylate-co-divinylbenzene) (PGMA-co-DVB) microspheres with an average size of 4.6 μm were prepared using a multistage emulsion polymerization method successfully and were subsequently modified by diazoresin (DR). Three kinds of porogens (toluene, cyclohexanol and dodecanol) were applied and porous microspheres with different morphologies were obtained. Porous PGMA–DVB microspheres resulting from toluene were selected for further modification with DR due to their large specific surface area and good pore structure. These microspheres were modified through the hydrolysis of epoxy groups and a photocuring reaction with DR. After treatment with UV light, the hydrogen bonding between hydrolyzed microspheres and DR was converted into covalent bonding through a unique photochemistry reaction of DR. Porous PGMA–DVB–DR microspheres were used as the stationary phase for high performance liquid chromatography (HPLC). Depending on the chemical structure of DR, the DR modified PGMA–DVB stationary phase can be used to perform mix-mode separation mechanisms, including reversed phase (RP) and hydrophilic interactions. Therefore, baseline separation of benzene analogs was achieved by using the porous PGMA–DVB–DR particles as packing materials, and the by-product of hydrophilic acetic acid was rapidly separated from the N-vinyl-1,2,4-triazole product within 5 minutes. In addition, the DR-modified particles may be expected to be an alternative tool for organic acid separation due to the presence of secondary amino groups.
研究领域:
分析化学
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材料科学
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产品关联
DOI
高影响因子
MACROMOLECULAR RAPID COMMUNICATIONS
·
2025
·
IF 4.3
Hongjie Xie,Shuanghong Peng,Xiangyu Huang,Suna Fan,Yaopeng Zhang
Flexible electrochromic devices (FECD) have been widely applied in smart displays, wearable devices, and other fields, however, the synchronous improvement of electrochromic performance and flexibility is still a challenge. In this paper, a fabric-based FECD with “side-by-side” structure is designed and constructed through inkjet printing. The polyaniline nanosheets with good dispersion are used as ink and electrochromic material, and the self-developed semi-solid electrolyte based on polyvinyl alcohol serves as gel electrolyte. Benefiting from the improved structure and excellent performance of individual components, the obtained FECD achieves a reflectivity change of 22.9%, and maintains the electrochromic ability after bending for 1000 times. This shows the potential in the field of wearable smart clothing and other flexible textile displays.
研究领域:
材料科学
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纺织工程
·
智能穿戴技术
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 39
·13300-13310
·
IF 6.4
Xiao Li,Yaping Zhu,Siqi Zhang,Xuehui Zhang,Yang Liu,Xiaogang Wu,Yanru Xue,Yi-Xian Qin,Yanqin Wang,Weiyi Chen
Developing skin-like biomimetic materials with electromechanical and sensing sensitive properties, so-called E-skin, demonstrate the potential to serve as novel sensors for surface strain measurement. Thus, a versatile bionic E-skin that can perceive strain signals was fabricated based on an electronic/ionic-conductive polymer, named as the CNC@PPy/CS-Cit3−/PVA gel. Notably, the citrate ion (Cit3−) formed tridentate coordination with N-glucosamine units of chitosan (CS) to form an interpenetrating CS-Cit3− polymer network. More importantly, the coordinated Cit3− could enhance the mechanical properties of the gels and serve as movable “bridges” among the cellulose nanocrystals@polypyrrole (CNC@PPy) nanoparticles. The as-developed conductive gels exhibited consecutive conductive networks with high conductivity (up to 0.97 ± 0.05 S m−1). The sensitivity of this electronic/ionic-conductive skin could be divided into two separate regions at different strain ranges (the GF was 5.27 for strain under 0–2.8% and the GF was 1.24 for strain under 2.8–650%). Owing to the rapid response time (∼160 ms) and recovery time (∼100 ms), remarkable fatigue resistance, and biocompatibility, the E-skin-based sensor can precisely distinguish physiological signals and joint motions of the body. It was envisioned that the bionic E-skin would achieve broad applications as sensors in medical monitoring and implantable bioelectronics.
研究领域:
材料科学
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生物医学工程
·
传感器技术
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产品关联
DOI
高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Xiaomei Liu,Na Wang,Huaiwu Peng,Zhenshi Zhang,Ziqiang Lei
Severe water scarcity and soil salinization have emerged as persistent ecological challenges threatening global agricultural sustainability. In this study, a molecularly engineered functional crosslinking agent was successfully synthesized through molecular-level surface modification of γ-alumina nanoparticles. Subsequently, a tragacanth gum-g-polyacrylic acid / acrylic acid-aluminium oxide (TG-g-PAA/AA-Al 2 O 3 ) exhibiting dual anti-leakage and salt-resistant properties was fabricated via aqueous solution polymerization using acrylic acid as the primary monomer. Systematic characterization revealed that the incorporation of 0.8 wt% bifunctional polymeric composite significantly enhanced material performance, demonstrating 18.4 % improvement in anti-leakage properties and 24.7 % improvement in salt-resistant compared to the control group. This innovative material integrates water conservation with saline soil remediation, offering dual-functional benefits for arid region management: simultaneously addressing water resource preservation while facilitating agricultural land reclamation. The proposed methodology establishes a novel theoretical framework for coordinated management of water and soil resources in drought-prone ecosystems, providing new insights for sustainable agriculture development in arid/semi-arid regions.
研究领域:
农业生态学
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环境功能材料
·
土壤修复
·
水土资源管理
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高分子化学
·
干旱区生态工程
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产品关联
DOI
高影响因子
HIGH PERFORMANCE POLYMERS
·
2025
·
IF 1.6
Yanjun Fu,Zhuo Wei,Wei Wang,Ying Huang,Li Yang,Guanjun Chang,Tengning Ma
Developing high-performance materials with stability in extreme environments remains a key challenge in materials science. In this work, a novel polymer, poly(imino arylene ether nitrile) (PIEEN), was successfully synthesized through a nucleophilic substitution reaction. The incorporation of imino and nitrile groups into the backbone facilitated the formation of robust intermolecular hydrogen bonds within the polymer matrix, significantly enhancing its thermal properties, as evidenced by a glass transition temperature (Tg) of 206°C and a decomposition temperature (T5%) of 410°C. Additionally, the reversible dissociation and reformation of hydrogen bonds under stress contributed to remarkable mechanical performance, achieving a tensile strength of 135 MPa and an elongation at a break of 31%. This dual enhancement of strength and toughness represents a significant breakthrough in addressing the longstanding trade-off between rigidity and toughness in rigid polymers. The results provide a promising pathway for designing high-performance polymeric materials.
研究领域:
高分子科学
·
材料化学
·
聚合物物理
·
功能材料
·
先进结构材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）