JOURNAL OF APPLIED POLYMER SCIENCE
·
2020
·Vol. 137
·期 39
·49189
·
IF 2.52
Silong Zhang,Zhengzai Cheng,Sheng Zeng,Guangyao Li,Jing Xiong,Ling Ding,Mario Gauthier
Vanillic acid, potentially derived from biosourced feedstocks, was used as starting material in the synthesis of novel polyesters. A diester obtained by esterification and etherification of vanillic acid served as first monomer, in combination with resorcinol bis(2-hydroxyethyl) ether, hydroquinone bis(2-hydroxyethyl) ether, or aliphatic diols with different carbon chain lengths as second monomers, and antimony trioxide as catalyst to synthesize a series of polyesters by melt polymerization. The materials obtained had polystyrene-equivalent M n = 10,000–19,500 g/mol and M w = 19,300–39,500 g/mol. Thermal analysis yielded melting temperatures of 76–114°C and onset decomposition temperatures T 5% = 321–360°C. Dynamic mechanical and tensile testing confirmed that polyesters derived from vanillic acid have properties superior to poly(ethylene terephthalate) (PET). Aqueous degradation experiments with bulk polyester samples at different pH over 16 weeks led to intrinsic viscosity decreases of 9–23% under neutral conditions (pH 7), 10–26% under acidic conditions (pH 3), and 7–19% under alkaline conditions (pH 12). The results obtained show that the good thermal stability and degradability of vanillic acid-based polyesters, and the tunability of the properties of these materials through selection of the diol monomer used in their synthesis, make them excellent biosourced replacements for commercial polyesters such as PET.
研究领域:
材料科学
·
有机化学
✓ 已验证
产品关联
DOI
高影响因子
Scientific Reports
·
2021
·Vol. 11
·期 1
·1-11
·
IF 4.38
Hu Keling,Sui Huachao,Zhao Dongping
Naturally occurring nipagin and eugenol were used as the collaborative starting materials for poly(ether ester) polymers. In this study, two series of nipagin and eugenol-derived copoly(ether ester)s, PHN1 1−x E1 x and PHN1 1−x E2 x (x = 0%, 5%, 10%, 15%, 20%), were prepared with renewable 1,6-hexanediol as a comonomer. The nipagin-derived component acts as the renewable surrogate of petroleum-based dimethyl terephthalate (DMT), while the eugenol-derived component acts as the cooperative property modifier of parent homopoly(ether ester) PHN1. 1,6-Hexanediol was chosen as the spacer because of its renewability, high boiling point, and short chain to enhance the glass transition temperatures ( T g s) of materials. The molecular weights and chemical structures were confirmed by gel permeation chromatograph (GPC), NMR and FTIR spectroscopies. Thermal and crystalline properties were studied by thermal gravimetric analysis (TGA), differential scanning calorimetric (DSC) and wide-angle X-ray diffraction (WXRD). The tensile assays were conducted to evaluate the mechanical properties. The results suggested that properties of this kind of poly(ether ester)s could be finely tuned by the relative content of two components for the desired applications (elastomer, rubbery) suitable for different scenarios from polyethylene glycol terephthalate (PET) and polybutylene terephthalate (PBT).
研究领域:
材料科学
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有机化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2020
·
IF 4.244
Xiuying Zhao,Tao Shou,Riran Liang,Shikai Hu,Peng Yu,Liqun Zhang
The gradual exhaustion of conventional fossil fuels makes it significant to develop renewable materials. Thermoplastic polyurethane (TPU), offering the advantages of processability and recyclability of thermoplastics, is gaining increasing attention for economic and environmental concerns. Despite the broad range of applications, the production of TPU is still highly dependent on fossil-based polyols and isocyanates. The development of sustainable polyols and isocyanates that derived from non-petrochemical sources is highly desirable. Notably, polylactic acid (PLA) is acknowledged as the most promising material in the bio-based polymer sector. In this research, we attempt to use the PLA-derived polyol as a renewable raw material to synthesize PLA-based TPUs. The properties of the PLA-based TPUs are comprehensively characterized by Fourier Transform Infrared Spectroscopy (FTIR), Gel Permeation Chromatography (GPC), Differential Scanning Calorimetry (DSC), Dynamic Mechanical Analysis (DMA), and tensile testing. The results showed that the TPUs based on PLA derivative exhibit a balanced mechanical property. Notably, the TPUs exhibit pronounced damping property around room temperature, enabling it as a promising damping material. And its mechanical performances were well maintained while damping performance was markedly enhanced after multiple reprocessing cycles. The value of this work lies in the fact that well-balanced properties of bio-based TPUs have been achieved by the use of renewable poly (lactic acid) derived component, which might be fruitful for increasing the renewable content of TPUs for a sustainable world.
研究领域:
材料科学
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生物工程
✓ 已验证
产品关联
DOI
高影响因子
SusMat
·
2023
·Vol. 3
·期 3
·320-333
·
IF 28.4
Shuangjian Yu,Yeqing Li,Siwu Wu,Zhenghai Tang,Liqun Zhang,Baochun Guo
As a kind of bio-derived feedstock, vegetable oil (VO) shows great potential to replace petroleum-based monomers to develop sustainable polymer materials because of its easy availability, low cost, bio-renewable, and environmentally friendly nature. However, due to the high cross-linking density and amorphous nature, directly cured VOs generally tend to be brittle and weak. To date, it is still difficult to adopt VOs and their derivatives as structural materials to prepare high-performance elastomers. To address this important issue, a multi-scale topology design strategy was proposed in this work. First, topology regulation and functionalization of VO-based networks were realized by managing functional groups proportion during the bulk polymerization of epoxidized soybean oil with dimer fatty acids. Furthermore, a second polymer (SN) network was introduced into the VO-based network as a protective layer via interfacial cross-links. The generated VO-based elastomers (VOEs) exhibit unprecedented comprehensive properties (VO content ≥70 wt.%, T g as low as −24.4°C, toughness up to 6.8 MJ/m 3 ). Besides, the VOEs also exhibit excellent reprocessability and self-healing capability. Overall, this work developed a novel kind of VOEs with significant comprehensive advantages and provided important inspiration for the preparation of high-performance elastomers through multi-scale topology regulation.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Zitong Fei,Yongyou Su,Yunchun Zha,Xiaohui Zhao,Qi Meng,Peng Dong,Yingjie Zhang
The efficient recovery of lithium from spent lithium-ion batteries has attracted extensive attention due to serious restriction of sustainable development of the lithium-ion battery industry caused by shortage and high price of lithium resources. The current traditional process faces high energy consumption and low benefit, which is not conducive to the industrial reform of selective lithium extraction from spent lithium-ion batteries. Herein, we propose a novel selective lithium extraction process through low-valent salts assisted roasting and washing to achieve the closed-loop recycling of spent cathode materials. The leaching rate of lithium reach 99.39% under the optimized conditions of the molar ratio of low-valent salts to spent LiCoO 2 materials of 3.0 and roasting temperature of 750 ℃ for 40 min. The key to the successful application of low-valent salts assisted roasting process relay on the conversion of insoluble polysulfides achieved by controlling the disproportionation reaction of cobalt with the aid of low valent salts. The regenerated LiCoO 2 materials display excellent structure and electrochemical performance with initial discharge specific capacity of 155.5mAh/g at 0.1C and the capacity retention rate 93.89% after 100 cycles. The remarkable economic and environmental benefits of the low-valent salts assisted roasting process provide support for practical industrial innovation and application of recycling of spent lithium-ion batteries.
研究领域:
环境科学
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材料科学
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能源工程
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Lei Tang,Gang Wang,Zhixiang Zeng,Luli Shen,Lijing Zhu,Yingxin Zhang,Qunji Xue
With the development of research on superwettability materials, superhydrophobic and superoleophilic materials show superior separation ability in oil-water separation due to their excellent oil-water selectivity. However, due to the super wetting ability of the oil to the material, it is difficult to clean and reuse after adsorbing the oil spill. Therefore, how to realize the complete regeneration of superhydrophobic and superoleophilic materials is still a worldwide problem. In this paper, the controlled adsorption-desorption process of oil and the complete regeneration of materials are realized by pH induced superwettability transformation. We fabricate a pH-responsive oil-water separation sponge by a method of simply impregnating the carboxyl and alkyl group modified SiO 2 nanoparticles on the surface of melamine sponge (MS) skeleton, which can change the wettability from superhydrophobicity and superhydrophilicity through protonation and deprotonation in different pH solutions. The experiment results indicate that the sponge is superhydrophobic and superoleophilic in acid and neutral solution, and can adsorb oil in water. While in basic solution, it becomes superhydrophilic and underwater superoleophobic, which can release the adsorbed oil. With the help of a vacuum pump, we can use this wettability transition to achieve a continuous oil adsorption and desorption process. These findings offer a new preparation method of regenerative 3D adsorption materials like MS in oil-water separation.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Research Express
·
2021
·Vol. 8
·期 12
·125901
·
IF 1.62
Xiaodong Jia,Shuo Mao,Lin Tian,Shujiang Chen,Guohua Li,Wei Gao
Herein, magnesium metatitanate (MgTiO3) ceramics were synthesised using recycled magnesia-hercynite (MH) bricks as the raw materials to achieve solid waste reusing of cement kiln refractories. The recycled MH materials were mixed with anatase TiO2 to investigate the effect of addition of doped B2O3 during the synthesis of MgTiO3 ceramics at 1400 °C. Phase compositions and microstructural studies were performed using x-ray diffraction (XRD) and scanning electron microscope (SEM), respectively. In addition, energy-dispersive spectroscopy (EDS) was conducted and the dielectric properties of the samples were studied. Results show that the addition of B2O3 can promote sintering, improve shrinkage, promote densification, stabilise MgTiO3 lattice, and inhibit the formation of MgTiO3. In addition, the presence of appropriate amount of B2O3 can accelerate the material diffusion and result in grain growth through the formation of intercrystalline liquid phase. Results also suggest that an increase in dielectric constant results in a decrease in dielectric loss. It was concluded that 2 wt% was the optimum amount of B2O3 required to obtain the most favourable synthesis rate of MgTiO3 (98.2%). The samples exhibited a maximum density of 3.69 g·cm−3 and excellent microwave dielectric properties at εr = 18.28 and tanδ = 0.086.
研究领域:
材料科学
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无机化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2021
·
IF 8.198
Kang Wang,Tianyou Hu,Penghui Shi,Yulin Min,Junfeng Wu,Qunjie Xu
The advancement of the electric vehicle industry has inevitably resulted in the increased production and numerous scraps of lithium-ion batteries (LIBs), among which the nickel cobalt manganese ternary material has become the fastest growing and largest proportion material in the lithium battery cathode material market. Therefore, a practical and effective method to recycle spent LIBs must be established. In this study, an efficient recycling method was proposed to leach value metals from cathode materials via the excellent solubility of deep eutectic solvents to metals, and regenerated LiNi1/3Co1/3Mn1/3O2 was prepared via coextraction and coprecipitation. 91.63% of Li, 92.52% of Co, 94.92% of Ni, and 95.47% of Mn are leached from the recycled cathode electrode. The kinetic experiments indicated that the leaching process fitted well to the shrinking core model controlled by chemical reactions. The value metals could be extracted with high efficiencies by adjusting the operating parameters in the step of coextraction. Moreover, the electrochemical tests of the regenerated ternary material revealed that the material had an excellent electrochemical performance. The proposed method, which can realize the sustainable development of spent LIBs, has great potential in the deep recycling of spent LIBs.
研究领域:
材料科学
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环境工程
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2018
·
IF 3.141
Tao Zhang,Qiuyan Yu,Jiajun Wang,Tao Wu
A new and highly transparent multilayer coating on poly(lactic acid) (PLA) film has been designed and constructed based on the layer-by-layer assembly of green and renewable hydroxypropyl methylcellulose (HPMC) and tannic acid (TA). The surface chemical structure, thickness, and morphology analyses of the multilayer coating confirm that HPMC and TA are successfully incorporated based on the hydrogen-bonding interaction. The resultant coated PLA film presents excellent UV-shielding and antifogging properties, which shows strong dependency on the number of assembly cycles. Although the tensile mechanical property of coated PLA film shows a decrease, the thermal property of the PLA substrate remained. This work provides a simple but effective pathway to design and fabricate highly transparent and environmentally friendly coating for the UV-shielding and antifogging applications.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2019
·
IF 3.42
Bin Liang,Shaojie Kuang,Jiajian Huang,Limin Man,Zhuohong Yang,Teng Yuan
With the rapid development of industry and the growing shortage of fossil energy, tung oil has attracted much attention of researchers because of its environment-friendly and renewable advantages. In this work, we successfully synthesized two kinds of tung-oil-derived renewable UV-curable active monomers, tung-acid-maleic tri-acrylate (TOAH) and tung-maleic tetra-acrylate (TMPG). 1 H NMR and FT-IR results collectively revealed that the targeted active-monomers were successfully prepared. UV-curing kinetics of the films was studied by Photo-DSC, thermal properties of their cured films were investigated by dynamic mechanical analysis, thermogravimetric analysis and general performance of UV-curing films including acidic, alkaline resistance and boiling-water resistance were also investigated. Tensile properties of the cured films were also tested. Dynamic mechanical analysis demonstrated that the storage modulus and glass transition temperatures of the cured films increased while increasing the content of TMPG monomer. The crosslinking density of the cured copolymers also increased with the increasing content of TMPG monomer. TGA showed that the maximum thermal decomposition temperatures ( T max ) of the cured copolymers were all above 420 °C. Tensile tests indicated that the tensile properties were better in the cured systems when the mixed films consisted of 50TOAH/50TMPG and 30% HDDA reactive diluent. Finally, all the results demonstrated that comparable balanced properties could be obtained by mixing these two bio-based monomers together.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Progress in Natural Science-Materials International
·
2021
·
IF 3.607
Xin Wang,Haoxin Niu,Wenwen Guo,Lei Song,Yuan Hu
Incorporating flame retardant fillers is the most efficient way to improve the fire resistance of polylactide (PLA). However, most flame retardant fillers result in deterioration of the mechanical property of PLA so far. Therefore, to create high-performance PLA materials combining excellent flame retardancy with superior mechanical properties remains highly attractive and challenging. In this study, a novel isosorbide-derived poly(phosphoester) (PIDI) was synthesized and used as a bio-based flame-retardant for PLA. The addition of PIDI showed a marginal effect on the change of the glass transition temperature of the PLA composites, but the crystallinity degree of the PLA composites was improved by the inclusion of PIDI. Benefitting from the improved crystallinity, the tensile strength, flexural strength, and impact strength of PLA composite containing 15 wt% PIDI was enhanced by 19.4%, 14.1%, and 36.9%, respectively, compared to the virgin PLA. With the addition of 20 wt% PIDI, the PLA composite showed an LOI value of 25.5% and a UL-94 V-0 rating in the vertical burning test. The flame retardant effect of PIDI was also demonstrated by a notable reduction (−46%) in the peak heat release rate (PHRR) of PLA composite containing 20 wt% PIDI. Such a renewable isosorbide-derived poly(phosphoester) is one of the promising candidates for PLA bio-composites with an outstanding balance between flame retardancy and intrinsic physical properties.
研究领域:
材料科学
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生物基材料
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2021
·
IF 9.078
Zhenjun Xiong,Xiuhong Li,Jie Wang,Fenggang Bian,Jinyou Lin
The beauty of nature is inexhaustible to human beings, and the process of human understanding and learning nature promotes the progress of science and technology. Inspired by the natural hierarchical spider-web structure, a biomimetic composite air filter with high filtration performance and good wet stability is prepared for the first time. Cellulose nanofibrils (CNF) generated from regenerable jute plants are implanted into the pores of commercialized biodegradable porous corrugated papers and self-assembled into robust nano-networks as filter building blocks to prepare a biodegradable composite air filter. When the base weight of CNF goes up to only 0.2500 g/m 2 , the CNF nano-networks completely fill the pores of corrugated paper, which greatly reduces the consumption of raw materials. More importantly, the filtration efficiency for PM0.3 removal of resultant corrugated paper is increased from 6% to 94.5%, while maintaining a relatively low pressure drop of 296.3 Pa. After a silane modification of CNF, the filtration efficiency of 75% can be achieved at high humidity. Overall, the successful synthesis of biomimetic composite air filters provides inspiration for the design of separation materials, satisfying the growing demand for renewability, sustainability, and biodegradability.
研究领域:
材料科学
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环境科学
·
生物学
✓ 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）