EUROPEAN POLYMER JOURNAL
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2021
·
IF 4.598
Shuang Xie,Jiacao Yang,Xiaojun Wang,Jie Yang
Biobased polymers hold the promise of addressing climate change and biodiversity loss due to deriving from renewable carbon. Dimethyl furan-2,5-dicarboxylate as a biobased monomer is potential alternative of terephthalic acid and has been widely used to produce biobased polyesters or polyamides . In this study, excellent performance of poly(decamethylene furanamide) (PA10F) was synthesized via bulk polymerization with 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) as catalyst. For PA10F produced at 200 °C as well as 0.05 MPa, weight-average molecular weight, glass transition temperature ( T g ) and initial decomposition temperature ( T d-5% ) were up to 62500 g/mol, 103 °C and 401 °C, respectively. Furthermore, the mechanical properties were also outstanding with the tensile strength of about 52.12 MPa, elongation at break of about 68.78%, and tensile modulus of about 1636 MPa. According to the result of X-ray diffraction analysis, the PA10F was amorphous.
研究领域:
材料科学
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化学工程
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环境科学
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DOI
高影响因子
JOURNAL OF POLYMERS AND THE ENVIRONMENT
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2023
·
IF 5.3
Zhao Yanna,Hou Wentong,Huang Yuqing,Zhang Ting,Zhang Yingying,Wang Yuqi,Bai Xiaowei
In this paper, a bio-based polyamide imide polymer, PDPD (Polymer of D230, Poly hexa methylene diamide and Dialdehyde vanillin), was synthesized via amine aldehyde condensation reaction. PHMD was prepared from diethyl oxalate (ODE) and 1,6-hexanediamine (HAD), and vanillin was dialyzed to give dialdehyde vanillin (DVA). Then polyether amine D230 was introduced to obtain polyamide prepolymer, and triethyl citrate was used as cross-linking agent to prepare bio-based glass polymer material PDPD through bulk polymerization at high temperature. The thermal stability, glass transition temperature, mechanical properties, and energy storage modulus of PDPD material were investigated through thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), and stress-strain curve. Results show that PDPD possesses excellent thermal stability and high mechanical strength, with a 5% thermal decomposition temperature at 288 °C, a stress of 7 MPa, and a strain of 117%. The storage modulus of PDPD in DMA testing can reach up to 2907 MPa. The anti-creep performance of PDPD is good, and the creep level after two repairs is within 40%. Self-healing testing revealed that PDPD maintained its performance after self-healing. The synthesized polymer is also recyclable, making it an attractive option for environmentally conscious applications.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2024
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IF 7.1
Xingwei Xun,Dongping Chen,Xi-Cun Wang,Xiaofeng Wu,Zheng-Jun Quan
Organic polysulfides have garnered significant attention recently as functional materials due to their abundant S–S bonds and strong chemical bonding structures, with potential applications in heavy metal adsorption, antimicrobials, and lithium–sulfur batteries. However, the environmental concerns associated with petroleum-based polymers and the flammability of sulfur pose challenges for their applications. This study describes the successful preparation of an inverse vulcanization sulfur-rich polymer using biobased resveratrol allyl ether as a copolymerization monomer. The polymer exhibits an ultrahigh glass transition temperature (Tg = 148 °C) and thermal stability, excellent flame retardancy, highly efficient silver absorption (removal rate >99.9%), outstanding silver-regenerative antimicrobial properties (complete inhibition of the growth and propagation of Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli)), as well as excellent specific discharge capacity (1198 mAh g–1), cycling performance, and rate capability. In situ battery infrared and DFT studies indicate that during the electrochemical redox process, the structure of the polymer undergoes a reorganization. The high active sulfur loading electrodes (∼5 mg cm–2) are also prepared to exhibit a certain practical potential with good discharge capacity and capacity retention.
研究领域:
材料科学
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环境科学
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电化学
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产品关联
DOI
高影响因子
ChemSusChem
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2019
·Vol. 12
·期 22
·4927-4935
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IF 7.804
Xiao-ling Qu,Min Jiang,Bing Wang,Jin Deng,Rui Wang,Qiang Zhang,Guang-yuan Zhou,Jun Tang
Graphical Low loading : With a small catalyst loading of metal-free and selective ionic liquids (0.1 % based on 2,5-furandicarboxylic acid), bioderived poly(ethylene 2,5-furandicarboxylate) is efficiently prepared with high molecular weight by the electrophilic activation induced by hydrogen bonds, which are formed between the ionic liquid [C 2 MIM] + and the carbonyl oxygen. Green synthesis of bioderived high-molecular-weight poly(ethylene 2,5-furandicarboxylate) (PEF) over metal-free catalysts is a significant challenge. This study focuses on PEF prepared from ethylene glycol and 2,5-furandicarboxylic acid (FDCA) through a direct esterification method with ecofriendly metal-free ionic liquids (ILs) as catalysts. The catalytic activities of a series of imidazolium cations in the presence of various anions are systematically investigated and found to be mainly governed by the anions. Among the ILs studied, 1-ethyl-3-methylimidazolium tetrafluoroborate ([C 2 MIM]BF 4 ) is identified as the best catalyst, showing excellent catalytic activity, selectivity, and stability, even at low catalyst loadings (0.1 mol % w.r.t. FDCA). Optimization of the polymerization parameters enables [C 2 MIM]BF 4 -catalyzed production of PEF with a high number-average molecular weight ( M n =5.25×10 4 g mol −1 ). The relationship between Brønsted acidity and catalytic activity is also investigated and the results show that the trend in catalytic activity is in good agreement with that in Brønsted acidity, as determined by the Hammett method. Additionally, on the basis of experimental results and density functional theory calculations, an electrophilic activation mechanism induced by hydrogen bonds is proposed. This strategy of adjustable acidity and anion structure in ILs provides an opportunity to develop other ILs for bio-based polyesters through green synthesis pathways.
研究领域:
化学工程
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材料科学
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绿色化学
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DOI
高影响因子
ACS Applied Materials & Interfaces
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2021
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IF 9.229
Biao Zhao,Shenghua Yang,Xueyong Yong,Jianping Deng
Amorphous nonconjugated room-temperature phosphorescent (RTP) polymers have aroused ever-increasing attention. However, the variety of such polymers is still rare due to limited preparation strategies. Herein, we report a facile strategy to achieve ultralong RTP emission in biobased nonconjugated polymers through a hydrolyzation process. The investigated polymers are synthesized by free radical solution copolymerization using biomass methyl isoeugenol and maleic anhydride as monomers. Noticeably, the obtained polymers carry no conventional fluorescent units but can exhibit blue fluorescence. More interestingly, after hydrolysis in sodium hydroxide aqueous solution, the resulting hydrolyzed polymers emit both enhanced blue emission and persistent RTP (up to 400 ms) under air conditions, with reversible emission performance switched via the uptake and removal of water. Also worthy to be highlighted is that the emission can be remarkably regulated by the cations in carboxylate or the substituents on the benzene ring. The as-obtained polymers demonstrate potential applications in anticounterfeiting and information encryption.
研究领域:
材料科学
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化学
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DOI
PubMed
高影响因子
CHINESE CHEMICAL LETTERS
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2019
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IF 3.839
Xiao-Yong Zhai,Xiao-Qing Wang,Yi-Xuan Ding,Yong-Gui Zhou
Partially biobased polysilylethers (PSEs) are synthesized via dehydrocoupling polymerization catalyzed by an anionic iridium complex. Different types (AB type or AA and BB type) of monomers are suitable. Levulinic acid (LA) and succinic acid (SA) have been ranked within the top 10 chemicals derived from biomass. BB type monomers (diols) derived from LA and SA have been applied to the synthesis of PSEs. The polymerization reactions employ an air-stable anionic iridium complex bearing a functional bipyridonate ligand as catalyst. Moderate to high yields of polymers with number-average molecular weights ( M n ) up to 4.38 × 10 4 were obtained. A possible catalytic cycle via an Ir-H species is presented. Based on the results of kinetic experiments, apparent activation energy of polymerization in the temperature range of 0–10 °C is about 38.6 kJ/mol. The PSEs synthesized from AA and BB type monomers possess good thermal stability ( T 5 = 418 °C to 437 °C) and low glass-transition temperature ( T g = −49.6 °C).
研究领域:
材料科学
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催化化学
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DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
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2018
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IF 3.849
Xuewen Guo,Xin Liu,Shaoyun Shan,Wenbo Zhao,Hongying Su,Qingming Jia
With pressing environmental concerns and incessant depletion of fossil reserves, producing sustainable polymeric materials to become a research target. In this work, we prepare a bio-based polymer from a naturally occurring monoterpene (β-myrcene) and sulfur dioxide which can be captured from industrial waste gas. The structure of the synthesized polymer was ascertained by IR and NMR. The initiator initiated poly(myrcene-co-SO 2 ) possesses four kinds of microstructure, 1,4-cis and 1,4-trans are the main structures, and the contents of 1,2-vinyl and 3,4-addition microstructure are extremely low. Solubility behavior, thermal degradation and optical properties of poly(myrcene-co-SO 2 ) were characterized by theoretical solubility parameter, TG and Abbe-type refractometer. Moreover, we report the adhesive properties of the polymer on glass, wood, aluminum and copper. Due to hydroxyl groups on the surface of the material, poly(myrcene-co-SO 2 ) exhibits outstanding adhesion properties.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Polymers
·
2023
·Vol. 15
·期 10
·2345
·
IF 5
Diansong Gan,Yuejun Liu,Tianhui Hu,Shuhong Fan,Xiaochao Liu,Lingna Cui,Ling Yang,Yincai Wu,Lily Chen,Zhixiang Mo
A new bio-based polyamide 56/512 (PA56/512) has been synthesized with a higher bio-based composition compared to industrialized bio-based PA56, which is considered a lower carbon emission bio-based nylon. In this paper, the one-step approach of copolymerizing PA56 units with PA512 units using melt polymerization has been investigated. The structure of the copolymer PA56/512 was characterized using Fourier-transform infrared spectroscopy (FTIR) and Proton nuclear magnetic resonance (1H NMR). Other measurement methods, including relative viscosity tests, amine end group measurement, thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), were used to analyze the physical and thermal properties of the PA56/512. Furthermore, the non-isothermal crystallization behaviors of PA56/512 have been investigated with the analytical model of Mo’s method and the Kissinger method. The melting point of copolymer PA56/512 exhibited a eutectic point at 60 mol% of 512 corresponding to the typical isodimorphism behavior, and the crystallization ability of PA56/512 also displayed a similar tendency.Keywords:copolymer PA56/512;bio-based polymer;thermal properties;non-isothermal crystallization kinetics
研究领域:
材料科学
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高分子化学
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产品关联
DOI
PubMed
高影响因子
FIBERS AND POLYMERS
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2020
·Vol. 21
·期 7
·1550-1559
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IF 1.797
Mahmud Sakil,Long Yu,Abu Taher Muhammad,Hu Han,Zhang Ruoyu,Zhu Jin
Poly(butylene 2,5-furandicarboxylate) (PBF) derived from 2,5-furandicarboxylic acid (FDCA) is an emerging bio-based alipharomatic polyester that is expected to replace its fossil-based terephthalate and naphthate homologues. PBF holds excellent gas barrier properties, but its slow rate of crystallization might restrict wider applications. To improve the rate of crystalization, it was melt-blended with crystalline micro-cellulose (CMC) to prepare a composite through twin-screw extrusion. To ensure environmental friendly conditions, neither chemicals to modify fibers nor compatibilizers to improve the filler/matrix interaction were used. Size exclusion chromatography (SEC), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), differential scanning calorimetry (DSC), thermo-gravimetric analysis (TGA) and X-ray diffraction (XRD) were used to characterize the composite. It was observed that a longer blending duration (cyclic mode) leads to a greater reduction in molecular weight (Mw) in the presence of CMC, which can be avoided by using a shorter blending duration (direct mode). The mechanical properties of the composite showed an increase in Young’s modulus by approximately 23 % and 36 % with respect to reference PBF for the cyclic and direct mode respectively. It was further observed that, although the elongation at break and tensile strength has decreased, it has improved gas barrier properties. Thermal analysis shows faster nucleation of PBF in the presence of CMC with a minor effect on its thermal degradation.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
CELLULOSE
·
2021
·Vol. 28
·期 13
·8445-8457
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IF 5.044
Saini Arun,Sharma Deepak,Xia Yuanyuan,Saini Aman,You Xiangyu,Su Ying,Chen Lihong,Yadav Chandravati,Li Xinping
Eco-friendly sustainable materials provide an appealing template to replace contemporary synthetic-nonrenewable resource-based materials while maintaining the acceptable material properties to meet the performance requirements. Here, a layer-by-layer (LBL) self-assembly technique was used for fabricating multilayer composite films using all bio-based polymers/polysaccharides, i.e. cationic guar gum (CGg), carboxylated cellulose nanocrystals (cCNCs) and hydroxypropyl methylcellulose (HPMC). A five layered composite film was fabricated by depositing polymeric layers as follows: CGg→cCNCs→HPMC→cCNCs→CGg. The structural analysis of (CGg/cCNCs/HPMC) 5 L multilayered composite films indicated the existence of electrostatic interaction as well as H-bonding between polymeric layers that resulted in homogenous, dense and compact film surface with improved smoothness and strength properties. As compared to pure CGg film, the (CGg/cCNCs/HPMC) 5 L multilayered composite films showed improved tensile strength (84.8 % increment) and modulus (29.19 % improvement). Importantly, the deposition of HPMC layer contributed in achieving multilayer composite films with more flexible behavior (46.55 % improvement in elongation at break). Furthermore, owing to the high transparency (89.5 % transmittance), appreciable gas and oil barrier performance and resistance to various solvents (e.g. acetone, THF and DMAc), these multilayer films are promising candidates for various applications including renewable/sustainable packaging materials.
研究领域:
材料科学
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生物工程
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产品关联
DOI
高影响因子
POLYMER
·
2020
·
IF 4.231
X.L. Xu,G.X. Bo,X. He,X.K. Tian,Y.J. Yan
A study is presented on the experimental methods to synthesize bio-based polymer nano-composites with unique hierarchical microstructures having enhanced thermal stability and the mechanical properties . The solution-processable polymer nano-composites were prepared from Sapium sebiferum oil (SSO) bio-based polyurethane (BPU) and nano-materials with varied dimensional morphologies, including two-dimensional (2D) nanoplates , one-dimensional (1D) tubular structures, and zero-dimensional (0D) particles. The structures and properties of the nano-materials and their BPU nano-composites were characterized. The results showed that the nano-materials were evenly dispersed in the BPU matrix, and the thermal stability and the mechanical properties of the synthetic nano-composites were noticeably improved. The effect was pronounced with 0D aminated silicon dioxide nano-particles (SiO 2 ) , and 1D carboxylic acid functionalized multi-walled carbon nanotubes (MWCNTs-COOH), suggesting that structural dimensions of nano-materials have a marked effect on advanced properties of nano-composites. Furthermore, the structural specificity of nano-materials on the improvement of the nano-composite properties was validated by molecular dynamic (MD) simulations. MD simulations provided insight into the molecular interaction between nano-materials and the BPU matrix.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Jiangbin Zhao,Lei Ding,Xiaofeng Sui,Zhiping Mao,Hong Xu,Yi Zhong,Linping Zhang,Zhize Chen,Bijia Wang
A general way to prepare bio-based polymer colorant by reactive dyeing of regenerated cellulose (RC) in dimethyl sulfoxide (DMSO) was established. Up to 40% higher dye utilization was achieved compared with aqueous reactive dyeing of RC for two reasons. 1. Lower liquor ratio of 1:9 could be applied for the concentrated RC suspensions in DMSO was less viscous. 2. Dye loss from solvolysis was turned off in DMSO. The method was generally applicable to RCs made from wood pulp, waste cotton, and bamboo pulp. The dyeing process has minimum influence on the morphological, rheological, and thermal properties of RC. The colored RCs thus prepared were used to prepare colored polymer composites via a Pickering emulsion approach, and to color cotton, cotton blend, and viscose fabrics via a printing approach. Therefore, it holds great potential as renewable and biodegradable pigments for making colorful composites, ink, textile dyeing and finishing.
研究领域:
材料科学
·
纺织科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）