POLYMERS FOR ADVANCED TECHNOLOGIES
·
2019
·Vol. 30
·期 12
·2968-2976
·
IF 2.162
Yan Wang,Jinhui Liu,Lin Xia,Mei Shen,Zhenxiang Xin,Jinkuk Kim
Eucommia ulmoides gum (EUG) is a renewable and sustainable polymer, which could be used as rubber or plastic by altering its crosslinking density while the complicated extracting process and nonpolar molecular chains limited its application. In this effort, a novel extraction method was introduced, which could simplify the extraction process of EUG. Then, the extracted EUG-chloroform (CHCl 3 ) solution was directly used to prepare epoxidized EUG (EEUG) with an epoxy degree of 40.0% to improve its polarity. The epoxidized natural EUG exhibiting both polar and nonpolar motives had an advantage in working as an interfacial compatibilizer for polymer composites, especially bio-based composites due to its inherent biocompatibility. Accordingly, the role of EEUG in modifying the interface of styrene-butadiene rubber (SBR)/silica composites were explored. The results showed that EEUG in SBR/silica composites acted not only as a compatibilizer but also as a constructure generating better mechanical properties than other compatibilizers, such as silane couplings, Si-69 and KH-550, and epoxidized natural rubber (ENR). The simplified extracting process and the epoxy modification of EUG would extend its application in rubber materials, medical materials, and biopolymer materials.
研究领域:
材料科学
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生物化学
·
高分子化学
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DOI
高影响因子
ACS Omega
·
2024
·
IF 3.7
Zhonglei Kang,Bo-xing Zhang
Due to the increasing pressure of environmental protection and the depletion of oil resources, Eucommia ulmoides gum (EUG) as a natural renewable and degradable biopolymer has attracted more and more attention. In this work, multilayer carbon nanotube film (CNF)/EUG composite films were fabricated through the infiltration and hot-pressing process. By taking advantage of the elasticity of EUG and the specific strength of CNF, composite films exhibited much more improved mechanical strength (maximum tensile stress up to 108.4 MPa) compared with pristine EUG and CNF alone. In addition, composite films prepared with five CNF layers and five infiltration cycles of EUG solution with a thickness of 181 μm can achieve the highest total shielding effectiveness value of 88 dB in 15.6 GHz. Moreover, the folded composite film can recover quickly to the fixed permanent shape when exposed to infrared light, demonstrating fascinating infrared-triggered shape memory behavior. This work provides a facile and general method to fabricate CNF/EUG composite films and is beneficial for pushing forward the practical application of EUG materials.
研究领域:
材料科学
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环境科学
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DOI
PubMed
高影响因子
LUMINESCENCE
·
2021
·Vol. 36
·期 6
·1469-1475
·
IF 2.464
Xiping Mei,Dongxiu Wang,Lin Zhang,Junfen Li,Chuan Dong
Fifty-four Eucommia ulmoides leaves were subjected to a hydrothermal technique to synthesize carbon dots (CDs) of 3.55 ± 1.45 nm size. The nanomaterial possessed excellent stability and strong fluorescence emission (φ f 42.3%). In a neutral buffer solution, the fluorescence signals of CDs solution were enhanced by aluminium ion without interference from other ions. Degree of enhancement correlated linearly with the Al 3+ content in the range 0.01–2.5 mM. Response of this method was fast and sensitive (detection limit was 23 nM). The CDs performed successfully as a sensitive sensor for trace Al 3+ determination in water samples, and satisfactory results were obtained.
研究领域:
纳米材料科学
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环境监测
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分析化学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Na Sun,Jiacheng Yu,Wuchao Cheng,Jieting Geng,Zhenxiang Xin,Lin Xia
Driven by technological advancements and rising living standards, the demand for high-performance cotton textiles continues to grow. Drawing inspiration from the stimuli-responsive behavior of Mimosa pudica and the inherent superhydrophobicity of lotus leaf surfaces, this study presents the development of a new class of smart cotton fabrics integrating superhydrophobicity, shape memory functionality, and wear resistance. The engineered smart cotton fabrics incorporate Eucommia ulmoides gum (EUG) and surface-tailored sepiolite particles as core functional elements. Central to this work is an innovative surface modulation strategy leveraging shape memory effects to dynamically control material hydrophobicity through thermoresponsive structural reconfiguration. Fabricated via a scalable dip-coating technique, these composites achieve tunable wettability without fluorine-based chemicals, marking a departure from conventional approaches. The innovation of this manuscript also lies in the cotton fabric’s fluorine-free composition and its eco-friendly preparation process. These characteristics enable cotton fabrics to adjust their surface wettability based on different usage environments and needs, offering vast possibilities for creating and designing intelligent products.
研究领域:
材料科学
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纺织工程
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仿生学
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产品关联
DOI
PubMed
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2019
·Vol. 411
·期 6
·1261-1271
·
IF 3.286
Sun Ya Kun,Sun Guang-Ying,Jia Man,Yang Jian,Liu Zhao-Sheng,Huang Yan-Ping,Aisa Haji Akber
One of the main challenges in large-scale applications of molecularly imprinted polymers (MIPs) is the significant amount of template needed in polymer preparation. A new strategy based on room-temperature ionic liquids (RTILs) was suggested to solve this problem by reducing the amount of template in the polymerization recipe. The MIP was synthesized with a mixture of dimethyl sulfoxide and RTIL (1-butyl-3-methylimidazolium tetrafluoroborate) as porogen, in which chlorogenic acid (CGA) was used as template, 4-vinylpyridine (4-VP) as functional monomer, and ethylene glycol dimethacrylate (EDMA) as cross-linker. The influence of polymerization variables, including CGA concentrations, and the ratio of 4-VP to EDMA on imprinting effect were investigated comprehensively. Moreover, the properties involving the column permeability, the number of binding sites, and the polymer morphology of the CGA-MIP monoliths were studied thoroughly. The MIP monolith had an excellent column permeability (1.53 × 10 −13 m 2 ) and allowed an ultra-fast on-line SPE, which dramatically shortens the separation time (< 10 min) and improves the separation efficiency. At high flow velocity (5.0 mL min −1 ), 50 μL of the extract from Eucommia ulmoides leaves can be loaded directly on the CGA-MIP monoliths and CGA with high purity can be obtained with a recovery of 89.01 ± 0.05%. As a conclusion, the resulting RTIL-induced approach of preparing MIP may be an effective tool in fabricating MIP in a low-cost way.
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研究领域:
化学工程
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药物化学
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产品关联
DOI
PubMed
高影响因子
BMC Chemistry
·
2021
·Vol. 15
·期 1
·1-10
·
IF 2.61
Huirong Zhang,huina Zhang,Nifeng Chen,Li Li
Background Eucommia ulmoides seed oil is a functional health oil with a high content of unsaturated fatty acids. However, excessively high content of unsaturated fatty acids can cause E. ulmoides seed oil to easily spoil. Microencapsulation technology can effectively encapsulate substances, thereby prolonging the spoilage time of oil products. Methods In the present study, E. ulmoides seed oil from different manufacturers were analyzed by Agilent 7890B-5977A gas chromatography – mass spectrometry. Encapsulation efficiency, yield rate, and scanning electron microscopy results between microcapsules prepared use different wall materials and different methods (spray drying and complex coagulation) were compared to determine the best preparation process for microcapsules. The Wantong 892 professional oil oxidation stability tester was used to measure the induced oxidation time of the E. ulmoides seed oil and microcapsules. Conclusion E. ulmoides seed oil comprises > 80% unsaturated fatty acids with a high α-linolenic acid content, followed by linoleic acid. The most promising combination was chitosan:gum arabic at 1:8 as the wall material and complex coagulation. The best preparation had a wall material concentration, stirring speed, aggregation pH, and core-to-wall ratio of 2.5%, 500 rpm, 4.2, and 1:4, respectively. Microcapsules prepared under these conditions exhibited higher yield and encapsulation efficiency (94.0% and 73.3%, respectively). The induced oxidation time of the E. ulmoides seed oil and microcapsules were 3.8 h and 13.9 h, respectively, indicating that microencapsulation can increase the oxidation induction time of this oil.
研究领域:
食品科学
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化学工程
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制药技术
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DOI
PubMed
高影响因子
MACROMOLECULES
·
2022
·
IF 6.057
Xin Qi,Lin Wang,Yingdong Zhang,Manman Jia,Liqun Zhang,Dongmei Yue
Natural rubber (NR) has a strategic position in the rubber industry due to its excellent properties, but it faces the problem of insufficient output and difficulty in recycling. Here, a high-performance elastomer was prepared by the simple epoxidation modification of bio-based Eucommia ulmoides gum (EUG). For the first time, it was found that epoxidized EUG (EEUG) with an epoxy degree of 12.3%–17.4% no longer crystallized at room temperature but had the ability to strain-induced crystallization (SIC). As a result, its vulcanizates showed excellent tensile strength (17 MPa), toughness (37.8 MJ m–3), and elasticity (strain recovery values >97%) without filler reinforcement, which is comparable with vulcanized NR. The SIC of EEUG was studied by synchrotron radiation wide-angle X-ray diffraction (SR-WAXD), and its performance was also compared with NR under the reinforcement of carbon black. In addition, through cross-linking by disulfide bonds, EEUG could be used to prepare high-performance (tensile strength of 10.5 MPa, toughness of 30.7 MJ m–3), recyclable green elastomers. This new kind of elastomer can be used as the second natural rubber, which is of great significance to solve the problem of insufficient production and difficult recovery of NR.
研究领域:
材料科学
·
高分子化学
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产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2026
·
IF 6.4
Yuhuan Jia,Qing Liang,Yi Zhang,Dan Zhao,Degang Zhao
The enzyme Farnesyl pyrophosphate Synthase (FPS) plays a critical role in the production process of Eucommia ulmoides rubber (Eu-rubber), catalyzing the production of farnesyl pyrophosphate (FPP), the direct precursor for rubber formation. However, the ubiquitination modification of EuFPS, a key enzyme in this pathway, remains unexplored. Here, we identified ubiquitination-associated enzymes interacting with EuFPS1 and characterized its ubiquitination profile. Using protein interaction analysis, subcellular localization, in vivo and in vitro ubiquitination assays, and ELISA, our findings indicate that EuFPS1 is inherently unstable and undergoes degradation via the 26S proteasome. Its ubiquitination is regulated by the E2/E3 complex comprising EuUBC16, EuUev1a, and EuPUB21/24. Specifically, the EuUBC16-EuUev1a complex catalyzes K48- and K63-linked polyubiquitination of EuFPS1. Functional studies revealed that overexpression of EuUBC16 in Nicotiana benthamiana significantly increased both the content and activity of FPS, whereas MG132 treatment decreased them. This antagonistic effect suggests that the EuUBC16-EuUev1a complex regulates EuFPS1 stability and degradation. We provide the first insight into the ubiquitination regulation mechanism of the key enzyme EuFPS1 in Eu-rubber biosynthesis, offering a novel theoretical foundation and research direction for enhancing Eu-rubber content.
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产品关联
DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2025
·
IF 5.1
Zhongtian Li,Yuan Lyu,Wuchao Cheng,Jieting Geng,Lin Xia
Foamed rubber materials play a vital role in industrial applications, but their utility is significantly limited by thermal shrinkage at elevated temperatures. Addressing this critical challenge, our study pioneers a novel chemical foaming strategy to engineer Eucommia ulmoides gum (EUG) and polyethylene (PE) foamed blends with integrated shrinkage resistance and triple-shape memory properties. The present investigation demonstrates how polyethylene content influences foaming morphology, vulcanization kinetics, and functional properties of blends. Notably, the EUG/P 20 blend demonstrates 85 % shrinkage resistance at 60 °C, significantly outperforming conventional foamed rubbers in thermal stability. To our knowledge, this study represents the first systematic investigation into shrinkage-resistant EUG-based foams, establishing a novel paradigm for developing anti-shrinkage elastomers through polymer blending strategies. The designed EUG/PE foamed blends show promising potential for oilfield applications, particularly as downhole filtration materials where thermal stability and shape adaptability are critical performance metrics.
研究领域:
材料科学
·
高分子科学
·
智能材料
·
发泡弹性体
·
石油工程
✓ 已验证
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2022
·
IF 6.449
Chunxiang Lin,Hao Yi,Ling Chen,Yifan Liu,Xiaoxia Ye,Yuancai Lv,Minghua Liu
A biphasic solvent system consisting of ionic liquids (IL) and petroleum ethers was applied in the extraction of Eucommia ulmoides gum (EUG) from pericarp . Effects of IL and extraction parameters on the yield and purity of EUG were investigated. The results showed that the addition of IL could enhance the yield and purity of EUG extracted from pericarp comparing with the traditional alike pretreatment method. FTIR, XRD and 1 H NMR characterization conformed the chemical structure of EUG. DSC analysis reviewed the partial destruction of crystal structure and the disappearance of β-crystal phase of EUG extracted by biphasic solvent system, resulting in the decrease of the melting point and increase of glass transition temperature. Moreover, the extracted EUG exhibited high tensile strength of 27.68 MPa, excellent elongation at break of 1069%, and thus high toughness of 181.45 MJ∙m −3 . Additionally, the excellent reusability of IL and petroleum ethers showed the extraction method of the biphasic solvent system promise as a feasible method to replace the traditional alkali pretreatment.
研究领域:
植物学
·
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
Bioactive Carbohydrates and Dietary Fibre
·
2024
·
IF 0
Xuan Ma,Dongli Yin,Tingting Liu,Yilei Wang,Shengcan Zou,TianYu Yang,Likang Zhao,Feng Wang
Osteoporosis is a significant and escalating public health issue. It is a skeletal disorder in which there is a decrease in bone strength, resulting in a heightened susceptibility to fractures. Eucommia ulmoides leaves (EUL) has been traditionally employed to alleviate muscle and bone weakness. In order to investigate the induction of osteoblast proliferation and differentiation by the two EUL extracts under non-stress conditions, as well as their combined effects with Caltrate, this study examined cell proliferation, alkaline phosphatase activity, mineralization, and abundance of osteogenic differentiation-related proteins. The results demonstrated that EUL extract 1 and Caltrate intervention alone could promote osteoblast proliferation and differentiation, and their combined treatment exhibited a synergistic effect. EUL extract 2, when administered alone, was capable of enhancing osteoblast proliferation and differentiation; however, it did not exhibit a strong synergistic effect when combined with Caltrate. Therefore, administering EUL extract 1 either individually or in combination with Caltrate serve as a potential dietary supplement for osteoporosis.
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DOI
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 140
·期 9
·e53563
·
IF 3.057
Yan Wang,Zhancheng Zhang,Yaoming Zhang,Xianqiang Pei,Tingmei Wang,Qihua Wang
To make full use of the renewability of polylactide (PLA) and natural Eucommia ulmoides gum (EUG), novel fully sustainable thermal plastic vulcanizates (TPVs) with high toughness were developed via dynamic vulcanization technique based on modified EUG (referred to as EUG-GMA). The latter greatly improved the toughness of PLA and the mechanism was discussed with respect to micro structure analysis. Aiming at providing theoretical guidance for PLA/EUG-GMA TPVs in scratch related applications, the scratch behavior of TPVs with different EUG-GMA content was studied in single-pass and multiple-pass scratching mode, after which the tribological mechanisms were discussed based on worn surface morphology and contact area analysis. It is revealed that the promoted interfacial adhesion due to in-situ compatibilization and the co-continuous phase structure of PLA/EUG-GMA TPVs played crucial roles in enhancing the TPVs' toughness. In addition to tribo-conditions, the above mentioned interfacial performance was also responsible for the variation of scratch behavior of different TPVs. It is expected that the present study would open up a new route of manufacturing sustainable composites combined with scratch resistance and toughness.
研究领域:
材料科学
·
可持续发展
✓ 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）