Polymers
·
2022
·Vol. 14
·期 23
·5064
·
IF 4.967
Jingrong Sun,Jinmeng Bai,Jingjing Li
In order to develop a bio-based epoxy resin with high mechanical and thermal performance, cork particles and nanocellulose were introduced into the rosin-based epoxy resin to improve the toughness, stiffness and thermal stability. The flexural properties of the epoxy composites indicated that the strength and modulus were reduced when the content of cork particles was relatively high (>3%) due to the low stiffness and modulus of cork itself. However, the flexural performance was significantly improved after the addition of 1% nanocellulose. In contrast to the flexural properties, the impact toughness results showed the synergistic toughening effects of nanocellulose and cork particles on the rosin-based epoxy resin. The highest impact toughness of 13.35 KJ/m2was found in the epoxy composite with 1% cellulose nanofibers and 3% cork particles, an increase of 149.07% compared to the neat epoxy. Cork particle size also had a significant effect on the mechanical properties of the composites. Both the flexural and impact results showed first a rise and then a fall with a decrease in the cork size. TGA results indicated cork particles and nanocellulose could have a synergistic enhancing effect on the thermal stability of the rosin-based epoxy resin. This work can add value to rosin and cork waste and widen the industrial applications of the epoxy resin.Keywords:rosin-based epoxy resin;cork;nanocellulose;toughening;strengthening
研究领域:
材料科学
·
生物复合材料
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DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2022
·
IF 6.633
Xufa He,Kangle Jia,Longfei Yu,Huanling Li,Jinlan Xin,Xiaoshan Zheng,Junhua Ning,Haifu Wu,Linjia Huang,Wu Wen
Pickering emulsions that are stabilized by organic particles that are issued from renewable sources have attracted considerable attention. However, developing green and robust Pickering emulsions of various types via simple methods has always been an important challenge. Herein, a rosin derivative, namely, maleopimaric acid (MPA), which has three carboxylic acid groups, is used to stabilize Pickering emulsions. Various types of gel-like Pickering emulsions can be obtained by adjusting the wettability of rigid MPA by changing the pH, such as water (W) in oil (O), O/W, double, and multiple emulsions. With increasing MPA concentration and volume fraction of the oil phase, phase inversion occurs from W/O to O/W and from O/W to W/O, respectively. The formed gel-like Pickering emulsions have excellent external stimulus and mechanical stabilities and can withstand high temperature (70 °C), freeze-thaw treatment and high centrifugal forces. These outstanding properties are due to the stable interfacial film and the network structure that are formed by the self-assembly of MPA with heterogeneous ionization degrees. This study provides a natural rosin-based solid stabilizer with adjustable wettability and further advances the design of stable Pickering emulsions with various structural features based on practical application needs.
研究领域:
材料科学
·
界面化学
·
绿色化学
✓ 已验证
产品关联
DOI
高影响因子
TETRAHEDRON
·
2025
·
IF 2.2
Qian Wu,Peng Yang,Zhijun Ke,Hanwen Wang,Zehua Zhang,Boyi Zhang,Shenglin Li,Xiaoping Rao
The utilize of epoxy resins always necessitates the aid of petroleum-based curing agents to facilitate cross-linking and engender an irreversible tridimensional network structure. However, this characteristic, in turn, imposes the constraint of recyclability in their applications and hinders sustainable development. Creating a durable and repeatedly useable epoxy resin adhesive that can withstand mild bonding conditions lingers a significant challenge. In this work, a novel rosin-based epoxy resin (HAR-EP x ) was successfully prepared from hydrogenated acrylic rosin (HAR) and epoxy resin (EP x ) based on the structure of the hydrogenated phenanthrene ring with large steric hindrance and low cross-linking density. The HAR-EP x prepared in this study exhibits several remarkable properties, such as outstanding heat resistance (T d = 354 °C), exceptional UV–visible light transmittance. HAR-EP x can be applied to adhesives without curing agents, and was characterized by mild bonding conditions (85 °C, 1.5 min), high mechanical properties (adhesion strength up to 4.306 MPa), and excellent reusability that retains over 80 % bonding strength even after undergoing 6 cycles. Moreover, it exhibits an intriguing characteristic, that is, it emits intrinsic cyan-green fluorescence when subjected to UV excitation, attributed to aggregation-induced emission (AIE).
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
JOURNAL OF FLUORESCENCE
·
2024
·
IF 2.6
Lu Guangjie,Yu Caili,Cheng Jie,Xu Jianben,Zhang Faai
Fluorescent polyurethane has been widely used as fluorescent probes and switches due to its diverse structure and properties, but most of them are solvent-based and synthesized from petroleum-based products. A new type of rosin-based anthraquinone fluorescent waterborne polyurethane (WPU-DAAQ) with good and stable fluorescence properties was synthesized by reacting rosin modified ester (RAG) as a diol and 2, 6-diaminoanthraquinone (DAAQ) as a fluorescent agent with diisocyanate. The structure of WPU-DAAQ was characterized by Fourier transform infrared spectroscopy, UV-vis absorption spectroscopy, and hydrogen magnetic resonance spectroscopy. The fluorescence properties, water resistance, and solvent resistance of WPU-DAAQ were tested. The results showed that DAAQ was successfully grafted onto the polyurethane molecular chain. The fluorescence intensity of WPU-DAAQ increases and then decreases with increasing excitation wavelengths, and increases with the increase of solvent ether content, and is significantly enhanced compared to DAAQ. The dispersion stability was good with the increase of DAAQ. The introduction of DAAQ into polyurethane improved the thermal stability, hydrophobicity, and solvent resistance of WPU-DAAQ. Therefore, WPU-DAAQ is a new type of fluorescent waterborne polyurethane with stable dispersion properties, good fluorescent properties, heat resistance and water resistance.
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
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
Polymers
·
2022
·Vol. 14
·期 11
·2161
·
IF 4.967
Long Li,Xiuyu Liu,Lanfu Li,Sentao Wei,Qin Huang
In this work, rosin-based composite membranes (RCMs) were developed as selective sorbents for the preparation of dencichine for the first time. The rosin-based polymer microspheres (RPMs) were synthesized using 4-ethylpyridine as a functional monomer and ethylene glycol maleic rosinate acrylate as a crosslinking. RCMs were prepared by spinning the RPMs onto the membranes by electrostatic spinning technology. The optimization of various parameters that affect RCMs was carried out, such as the ratio concentration and voltage intensity of electrospinning membrane. The RCMs were characterized by SEM, TGA and FT-IR. The performances of RCMs were assessed, which included adsorption isotherms, selective recognition and adsorption kinetics. The adsorption of dencichine on RCMs followed pseudo-second-order and adapted Langmuir–Freundlich isotherm model. As for the RCMs, the fast adsorption stage appeared within the first 45 min, and the experimental maximum adsorption capacity was 1.056 mg/g, which is much higher than the previous dencichine adsorbents reported in the literature. The initial decomposition temperature of RCMs is 297 °C, the tensile strength is 2.15 MPa and the elongation at break is 215.1%. The RCMs have good thermal stability and mechanical properties. These results indicated that RCMs are a tremendously promising adsorbent for enriching and purifying dencichine from the notoginseng extracts.Keywords:rosin-based composite membranes;dencichine;electrostatic spinning technology;notoginseng extracts
研究领域:
药学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2021
·Vol. 9
·期 38
·13144-13156
·
IF 7.393
Fei Fu,Minggui Shen,Dan Wang,He Liu,Shibin Shang,Feilong Hu,Zhanqian Song,Jie Song
It is known that the tremendous structural units in a polymer chain can result in a larger free volume of the bulk, which can effectively decrease the dielectric constant of the polymer. According to this design strategy, a novel rosin-based BCB monomer containing Si–O and characterized by a symmetrical molecular structure was successfully synthesized. Subsequently, an amorphous cross-linked network, with a dielectric constant of 2.44 and a dielectric loss of 2.02 × 10−3 at 1.0 MHz, was formed after the monomer was polymerized at an appropriate temperature. Additionally, the effects of the rosin skeleton on other properties of the modified BCB resin were studied. Compared with those of a BCB resin without a rosin skeleton, the dielectric properties, thermal stability, mechanical properties, and hydrophobicity of the rosin-modified BCB resin were significantly improved. The improvement of these properties is due to the presence of a hydrogenated phenanthrene ring in rosin, which is difficult to rotate and hinders the movement of the molecular chains in the modified BCB resin. Meanwhile, the rigidity and hydrophobicity of the hydrogenated phenanthrene ring can also improve the properties of the BCB resin. Thus, this study shows that the introduction of a rosin skeleton can significantly and comprehensively improve the properties of BCB materials.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Bin Wu,Chaoji Xiong,Zhuo Xu,Kun Liang,Chunhua Wu,Wei Wu,Qian Chen
In order to synthesize green, low-toxicity, and novel antifungal agents. In this study, a rosin-based bisquaternary ammonium salt (Rbs) was synthesized using rosin amine and evaluated for its antifungal activity against F. oxysporum f. sp. niveum, F. graminearum, V. mali, P. capsica and A. solani . The results show that compared to benzalkonium bromide, Rbs has stronger inhibitory activity against five types of fungi, with the best activity against V. mali (EC 50 = 3.071 μg/mL), and has excellent sustained antifungal activity. In vivo tests have shown that Rbs has significant protective and therapeutic effects on apples . Using SEM, TEM, relative membrane permeability and density functional theory calculations, we found that Rbs causes organelle and cell membrane disruption, leading to leakage of cell contents and ultimately cell death. In addition, mouse toxicology showed that the toxicity of Rbs was low. These studies provide theoretical guidance for the development of subsequent fungicides.
研究领域:
植物病理学
·
绿色化学
·
毒理学
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产品关联
DOI
PubMed
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2024
·
IF 8.3
Liwei Lu,Wenzhe Niu,Jiongchao Li,Yuedong Xing,Yutao Yang,Jianben Xu,Faai Zhang
The development of conventional thermo-responsive self-healing elastomer is hindered by two bottlenecks: i) longer repair time for damaged elastomers and ii) restricted sites for self-healing. In this study, fast near-infrared (NIR) light photo-responsive self-healing nanocomposites were fabricated by blending polydopamine (PDA) particles into cross-linked polyurea containing sextuple H-bonds (SHBs) and hinder urea bonds (HUBs). Strong interfacial interactions between PDA and polyurea fragments containing extensive H-bonds significantly enhanced the mechanical properties of the nanocomposites. Moreover, the rapid photoresponsive self-healing properties were provided by the excellent dynamic abilities of HUBs and the outstanding photothermal effect of PDA. Further, the deposition of Pt onto the elastomer surface created a conductive layer through chelation with PDA, thereby endowing the nanocomposites with the potential for strain sensor 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
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Jianben Xu,Zhangyan Shi,Yuedong Xing,Wenzhe Niu,Yutao Yang,Xiang Xu,Faai Zhang
Superhydrophobic coatings are extensively used in applications such as anti-icing and anticorrosion owing to their multifunctionality. However, their limited abrasion resistance restricts their wider use. Herein, a rosin-based self-healing superhydrophobic composite coating was developed through a straightforward spraying and ultraviolet photopolymerization method. By incorporating rosin diols to replace a portion of petroleum-based diols, the rigid tricyclic phenanthrene structure enhances the material's mechanical properties (tensile strength of 28.9 ± 0.6 MPa, toughness of 40.4 ± 0.9 MJ m −3 ) and self-healing capabilities (scratches fully heal within 2 h at 80 °C). The combination of micro- and nanoscale hierarchical structures with low surface energy materials endowed the coating with exceptional superhydrophobicity, resulting in a water contact angle of 163.4 ± 1.4°. Notably, modified silica (M-SiO 2 ) was incorporated into the polyurethane matrix via photocrosslinking, considerably enhancing the coating's mechanical and chemical stability, while preserving its superhydrophobicity even in extreme environments. Furthermore, these coatings are multifunctional, offering excellent self-cleaning, antifouling, anticorrosion, and anti-icing properties (with a freezing time of up to 728 s at −15 °C). Their compatibility with various substrates (such as glass, fabrics, paper, metal, and wood) and the simplicity of the preparation process make them highly promising for applications in self-cleaning surfaces, antifouling of marine equipment, anti-icing and other areas.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Yuemin Zhou,Fuhao Dong,Xingyu Chen,Xujuan Huang,Lizhen Guo,He Liu,Xu Xu
Non-isocyanate polyurethane (NIPU) has received wide attention as a material prepared from renewable resources. Nevertheless, due to its poor mechanical properties, NIPU is difficult to replace conventional polyurethane to achieve large-scale production and practical applications. Hence, using rosin derivatives as raw materials, biogenic cyclic carbonic acid esters were synthesized by carbon dioxide (CO 2 ) coupling reaction, and then cured with polyethylenimine (PEI) to form a new renewable NIPU thermosetting network without catalysts. The introduction of a rosin rigid structure and the formation of a hyperbranched structure make the obtained NIPU have excellent tensile strength (up to 40.50 MPa). Meanwhile, the hydrogenated phenanthrene ring structure of rosin restricts the movement of the NIPU chain, which leads to good thermal stability. Taking advantage of the transesterification of carbamates, the resultant NIPU exhibited self-healing, recyclability (recovery efficiency reached 89.50%), and shape memory. In addition, abundant polar groups endow NIPU with good adhesion strength. The innovative bio-based NIPU materials that are suggested in this work exhibit a variety of benefits, such as low curing temperature, outstanding mechanical properties, environment friendliness, and thermal stability, and have various applications in furniture and printing, adhesives, packaging materials, and other industries.
研究领域:
材料科学
·
可持续化学
·
生物质利用
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
·
2019
·Vol. 26
·期 2
·180-186
·
IF 1.292
Fei Song,Puyou Jia,Haoyu Xia,Meng Zhang,Lihong Hu,Yonghong Zhou
In this work, rosin-based plasticizer was synthesized by Diels–Alder (DA) and esterification. First, the maleopimaric acid (RT) was obtained by DA between the double bond of rosin and maleic anhydride. Then, the carboxyl group and anhydride group of RT was esterified with tetrahydro geraniol to obtain the rosin-based polyacid esters (RTT) under the catalysis of p-toluene sulfonic acid. The structure of RT and RTT was detected by FTIR and 1 H-NMR. RTT was used as main plasticizer to obtain plasticized polyvinyl chloride (PVC) materials and compared with DOP. The results showed that RTT improved the thermal stability and reduced T g of PVC film. Plasticized PVC films had excellent mechanical properties with the elastic modulus of −4,793.67 MPa and tensile strength of −111.86 MPa, higher than that of pure PVC and DOP-6. RTT showed better volatility stability, migration, and solvent extraction in PVC compared to DOP. J. VINYL ADDIT. TECHNOL., 26:180–186, 2020. © 2019 Society of Plastics Engineers
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
危险品化学品经营许可证（带存储）