Article
Biochemistry & Molecular Biology
Jixuan Wei, Chunxia Zhao, Zhaorun Hou, Yuntao Li, Hui Li, Dong Xiang, Yuanpeng Wu, Yusheng Que
Summary: In this study, poly(vinyl alcohol) composite aerogels (PVA/PCF/alpha-ZrP) with excellent flame retardancy were synthesized using exfoliated alpha-zirconium phosphate and phosphated cellulose through the multi-directional freezing method. The composite aerogel showed significantly reduced peak heat release rate, total smoke release, and CO production compared to pure PVA aerogel, while the limiting oxygen index value was improved. The flame retardancy mechanism involved crosslinking and carbonization of PVA chains promoted by PCF and alpha-ZrP, forming a barrier and reducing the emissions of combustible toxic gases.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Engineering, Environmental
Deyu Niu, Wenhao Yu, Weijun Yang, Pengwu Xu, Tianxi Liu, Zhenyu Wang, Xiuping Yan, Piming Ma
Summary: Poly(lactic acid) (PLA) is a promising sustainable bioplastic with superior processibility and mechanical strength. To overcome its flammability and poor UV shielding, researchers have proposed an efficient strategy by incorporating specific additives, resulting in improved flame retardance and UV protection of PLA while maintaining its mechanical properties.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
X. G. Wang, P. Qi, S. J. Zhang, S. L. Jiang, Y. C. Li, J. Sun, B. Fei, X. Y. Gu, S. Zhang
Summary: This work presents a strategy to enhance the flame-retardant efficiency of metal organic frameworks (MOFs) by encapsulating triethyl phosphate (TEP) into a zirconium-based MOF (UiO66-NH2). The resulting UiO@TEPx compound flame retardant exhibited improved flame retardancy for poly (lactic acid) (PLA) composites. The introduction of UiO@TEP50 significantly upgraded the UL-94 level, increased the limiting oxygen index value, reduced smoke production, and decreased the peak heat release rate compared to the control PLA sample. Furthermore, the PLA composites also showed enhanced mechanical properties and anti-UV effects.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Green & Sustainable Science & Technology
Xingguo Wang, Wenjia Wang, Shuheng Wang, Yufan Yang, Hongfei Li, Jun Sun, Xiaoyu Gu, Sheng Zhang
Summary: A novel halogen-free self-intumescent polyelectrolyte was synthesized and used to improve the flame retardancy of PLA nonwovens, showing significant results with potential to produce cleaner commercialized flame-retardant materials.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Biochemistry & Molecular Biology
Caixia Li, Bingtao Wang, Yong Yang, Juan Chai, Zhenghong Guo, Zhengping Fang, Peng Chen, Juan Li
Summary: In this paper, the effects of an ionic liquid and a phosphamide on the flame retardancy and crystallization behavior of poly(lactic acid) (PLA) were studied. The results showed that the combination of these two additives exhibited a synergistic effect, improving the flame retardancy of PLA. Furthermore, the PIL/POFA blend also enhanced the crystallization rate of PLA.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Polymer Science
Fang Wu, Guo-Qiang Tian, Jie-Wen Yang, Jie Tan
Summary: Improving the toughness and flame retardancy of poly(lactic acid) (PLA) has been a challenge due to the limitations of traditional additives. In this study, an ionomer additive called PBAUI was synthesized to address this issue. The unique structure of PBAUI enhanced the interfacial compatibilization between PLA and improved the flame-retardant efficiency. The PLA/PBAUI blends showed improved toughness-strength balance and flame retardancy, with minimal impact on transparency.
Article
Forestry
Zhouyao Yue, Huashan Wang, Mingxiu Zhang, Meiyi Wang
Summary: In this study, polylactic acid (PLA)/epichlorohydrin modified pinewood flour (EWF) composites were prepared and systematically investigated for their mechanical, thermal, and rheological properties. The results showed that the addition of epichlorohydrin modified pinewood flour (EWF) significantly improved the tensile and impact properties of the biocomposite, as well as enhanced the crystallinity. Additionally, the PLA/EWF composite exhibited improved storage and loss modulus due to increased molecular entanglement and crosslinking.
EUROPEAN JOURNAL OF WOOD AND WOOD PRODUCTS
(2022)
Article
Materials Science, Composites
Zhu-Bao Shao, Xiang Song, Tian-Ci Wang, Jing Cui, Wen Ye, Baoyun Xu, De-Yi Wang
Summary: A novel constructing strategy was used to obtain super-efficient flame retardants containing metal elements for epoxy resin, resulting in excellent fire protection.
COMPOSITES COMMUNICATIONS
(2022)
Article
Polymer Science
Guofeng Ye, Siqi Huo, Cheng Wang, Qiu Shi, Zhitian Liu, Hao Wang
Summary: This study successfully synthesized a bio-based flame retardant named PF with green and facile method, significantly improving the flame retardancy of PLA by reducing heat release and generating compact char layer.
POLYMER DEGRADATION AND STABILITY
(2021)
Article
Engineering, Environmental
Zixuan Chen, Fei Sun, Huakun Zhao, Tao Yu, Weidong Yang, Qian Li, Yan Li
Summary: Poly (lactic acid) (PLA) is a bio-based polymer derived from renewable plant resources. The thermoplastic PLA currently produced on an industrial scale has poor mechanical strength and flame retardancy. This study developed a synthesis route to produce thermosetting PLA with improved flame retardancy by reacting DOPO with IA, polymerizing with PENTA and LA oligomer, and end-functionalizing with MAAH. The synthesized PLA showed admirable flame retardancy with a 10:1 LA-to-PENTA mole ratio.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Polymer Science
Xiaosui Chen, Can Wang, Shuzheng Liu, Aiqing Zhang, Wei Liu, Lijun Qian
Summary: By coating HBPPA and GO on the surface of glass fibers, GF@HBPPA@GO fibers were prepared to improve the flame retardancy of polymer composites without affecting their mechanical properties.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
Article
Polymer Science
Chuanbiao Zhu, Xiang Lu, Yi Li, Yanhong Deng, Jiuling Lu, Zhigang Liu, Hao Wu, Yi Tong, Jinping Qu
Summary: The addition of ZrP and E-MA-GMA into PLA improved its thermal stability and toughness, resulting in a nanocomposite with excellent impact strength and toughness.
Article
Polymer Science
Somayeh Sharafi Zamir, Babak Fathi, Abdellah Ajji, Mathieu Robert, Said Elkoun
Summary: The effect of lactic acid grafted starch nanocrystals (g-SNCs) on the soil burial degradation rate of Poly (lactic acid) (PLA) was studied. The results showed that the addition of g-SNCs nanoparticles accelerated the degradation rate of PLA. Furthermore, the chemical bonds and material structure of PLA/g-SNCs changed after soil burial.
POLYMER DEGRADATION AND STABILITY
(2022)
Article
Biochemistry & Molecular Biology
Ping Wang, Zhenfeng Wang, Tong Yan, Liyuan Yang, Li Yang, Jiacheng Ling, Shaojie Feng, Pei Xu, Yunsheng Ding
Summary: Multifunctional composites containing multi-walled carbon nanotubes (CNTs), ammonium polyphosphate (APP), and a commercial multifunctional epoxy oligomer (MEO) as chain extender were prepared via melt blending to improve both the mechanical and flame retardant properties of polylactide/poly(butylene adipate-co-terephthalate) (PLA/PBAT) composites. The addition of 6% CNTs and 10% APP in the PLA5-PBAT5/10A/6C composite resulted in optimal flame retardant properties, with a limited oxygen index of 28.3%, decreased peak heat release rate (pHRR) of 368 kJ/m(2), and total heat release (THR) of 72 MJ/m(2). The co-continuous phases in the composite also improved its mechanical properties compared to PLA8-PBAT2 composites.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Thermodynamics
Jie Zhang, Xianling Fu, Wei Cai, Zhaoxin Li, Xin Hu, Ruixia Gao, Xuemeng Tian, Chaochao Dong, Yuan Hu
Summary: This study successfully enhances the fire safety and mechanical properties of epoxy resin composites by preparing organically modified zirconium phosphate (OZrP) nanosheets and combining them with intumescent flame retardants (IFR). The incorporation of 2.0 wt% OZrP nanosheets significantly increases the limit oxygen index (LOI) and enables the composite to pass the UL94 V0 rating. The addition of OZrP nanosheets suppresses the deterioration of mechanical properties caused by IFR and effectively reduces the peak heat release rate in the cone calorimeter test. These findings provide important guidance for the practical application of epoxy resin.
THERMOCHIMICA ACTA
(2023)
Article
Environmental Sciences
Yu Qin, Meixuan Li, Jiani Han, Gecheng Cui, Weiping Du, Kehu Yang
Summary: This study explored the research hotspots and trends of Kinesio Taping in the past decade through bibliometric analysis. The results revealed that pain relief, sports injury prevention and treatment, and proprioception enhancement for improved postural control were important research areas in the field of Kinesio Taping.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Medicine, Research & Experimental
Junjie Cao, Renzhi Pei, Ying Lu, Zhongzheng Zheng, Zhiyang Yuan, Daiyang Li, Pisheng Zhang, Xuhui Liu, Dong Chen, Xiaohong Du, Lieguang Chen, Shuangyue Li, Peipei Ye, Tiantian Wang
Summary: The study found that the modified antithymocyte globulin-post-transplant cyclophosphamide combination can decrease the risk of acute and chronic graft-versus-host disease and improve graft-versus-host disease and relapse-free survival in high-risk acute myeloid leukemia and myelodysplastic syndrome patients after allogeneic hematopoietic stem cell transplantation.
CURRENT RESEARCH IN TRANSLATIONAL MEDICINE
(2023)
Article
Biochemistry & Molecular Biology
Wenlin Lu, Xuhui Liu, Linghui Zhao, Shirong Yan, Qingyun Song, Cao Zou, Xun Li
Summary: This study investigated the role and mechanism of miR-22-3p in heart failure, and found that its overexpression inhibits cell activity and promotes cell apoptosis. MiR-22-3p increases the risk of heart failure damage by negatively regulating FURIN.
CHEMICAL BIOLOGY & DRUG DESIGN
(2023)
Article
Plant Sciences
Hongling Zhang, Guiqiong Li, Min Jiang, Changling Zhao, Pengyu Zhao, Chen Wang, Guosong Wen, Feng Zhou, Wenhua Dongchen, Shaozhong Xu, Ting Mu, Fanlai Meng, Xinglei Xiao, Di Yang, Zhengjie Liu, Ya Zhou, Qin Xiong
Summary: The expression of flavonoid synthesis-related genes in Panax notoginseng stems shows multi-peak curves, and the distribution of total flavonoid and anthocyanin content in the stems is asymmetric, mainly concentrated in the upper parts. The correlations between gene expression and flavonoid accumulation are highly diverse.
ACTA PHYSIOLOGIAE PLANTARUM
(2023)
Article
Physics, Multidisciplinary
Xingxing Yang, Yang Li, Xin Guo, Meiling Ding, Jingxuan Yang
Summary: This paper proposes a strategy to reduce energy consumption by storing and transmitting regenerative energy of trains through multi-agent simulation. By optimizing the train operation time and dwell time, the traction energy consumption is reduced, and the accuracy of the simulation model is validated in a practical case study.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2023)
Review
Obstetrics & Gynecology
Liu Yang, Lufang Feng, Lijuan Huang, Xuejiao Li, Wenwen Qiu, Kehu Yang, Jie Qiu, Haihong Li
Summary: This study conducted a meta-analysis to identify the association between maternal factors and intrauterine growth retardation (IUGR), and found that smoking, primiparity, prepregnancy BMI < 18.5, poor gestational weight gain, pregnancy-induced hypertension, anemia, and hypoproteinemia were associated with IUGR. These findings could contribute to the development of risk prediction models and improve management and education for child-bearing or early pregnant women.
REPRODUCTIVE SCIENCES
(2023)
Article
Energy & Fuels
Dong Liang, Kaiwen Zhang, Song Ge, Yang Wang, Deyi Wang
Summary: This study proposes a new fault monitoring method based on impedance estimation of power line communication equipment. The method uses the channel frequency response to estimate the high-frequency input impedance and achieves real-time monitoring and locating of ground faults in the power grid. Through variational modal decomposition and inversion analysis, the factors affecting impedance in the channel frequency response are extracted and the estimation results of impedance are obtained. The method achieves high-sensitivity positioning of cable faults by tracking and identifying abnormal states using impedance change and machine learning algorithms.
FRONTIERS IN ENERGY RESEARCH
(2023)
Article
Chemistry, Physical
Ye Ji, Xi-Lian Guo, Jia-Yu Yang, Hai-Han Zhang, Xu-Hui Liu, Ming-Xing Song, Zheng-Kun Qin, Jia Wang, Fu-Quan Bai
Summary: In this article, six novel heterocyclic Ir(III) complexes were designed and calculated using DFT and TD-DFT. The bands of the lowest-lying absorptions and lowest energy emissions, as well as the spectral properties, frontier molecular orbitals, and spin-orbital coupling values, were studied. These complexes exhibit low efficiency roll-off properties, which is significant for the development of OLEDs.
Article
Biochemistry & Molecular Biology
Guoshun Liu, Xuhui Liu, Xingdong Ma, Xiaoqi Tang, Xiaobin Zhang, Jianxia Dong, Yunfei Ma, Xiaobei Zang, Ning Cao, Qingguo Shao
Summary: Dual-ion batteries (DIBs) are a new type of energy storage device that store both anions and cations. Combining graphite cathodes with high-capacity silicon anodes can improve the energy density of DIBs.
Article
Thermodynamics
Shicheng Zheng, Yongling Fu, Deyi Wang, Ziyu Liu, Junlin Pan, Juan Chen
Summary: The planetary thread roller bearing (PTRB) is a new type of ball bearing with the advantages of high-power density, independent usage, and capability to carry combined loads. In this paper, the structure and force transmission paths of PTRB were briefly introduced, and the elastic deformation of various components was analyzed. Theoretical models for load distribution were established based on the non-linear relation between force and elastic deformation.
ADVANCES IN MECHANICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Lingjie Meng, Xuhui Liu, Qingxiang Hong, Yan Ji, Lingtao Wang, Qiuyang Zhang, Jie Chen, Changjiang Pan
Summary: In this study, a Zn2+-loaded polydopamine (PDA/Zn2+) coating was prepared on an alkali-heat-treated magnesium alloy surface inspired by mussel adhesion protein. The coating showed excellent wettability and selective promotion of albumin adsorption. Furthermore, the corrosion resistance, hemocompatibility, and endothelialization of the modified magnesium alloys were significantly improved with the increase of Zn2+ content in the coating.
Article
Chemistry, Multidisciplinary
Song Gu, Yan-Fang Xiao, Shi-Huan Tan, Bo-Wen Liu, De-Ming Guo, Yu-Zhong Wang, Li Chen
Summary: A strategy of tailoring dynamic covalent bonds with a low rotational energy barrier was proposed to fabricate phosphate-derived Diels-Alder crosslinked recyclable thermosets and their composites, simultaneously overcoming the trade-off between recycling efficiency and comprehensive properties in current covalent adaptable materials and offering a guidance for the rational design of sustainable thermosetting polymers for versatile applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Polymer Science
Peng Zhang, Lin Chen, Yan Guo, Lei Zhang, Xiu-Li Wang, Yu-Zhong Wang
Summary: Inspired by the interpenetrating network of nature leaf-veins, researchers have successfully synthesized noncomposite polymer materials with ultra-robust, lightweight, and fully recyclable properties. By designing the molecular structure of the polymer, they were able to control the secondary and tertiary structure of the material, resulting in the growth of a leaf-vein-mimicking crystal reinforcement phase. The resulting material exhibits exceptional mechanical properties, lower density, and easy processing. Additionally, it can be chemically recovered to obtain high-purity raw monomers.
Article
Chemistry, Multidisciplinary
Qiang-Wu Tan, Dong Li, Lin-Yue Li, Zi-Li Wang, Xiu-Li Wang, Yu-Zhong Wang, Fei Song
Summary: By studying the mathematical relationship between the response sensitivity of photonic crystal color changes and the location distances of photonic co-phases, this research provides a rational approach for the design of intelligently responsive photonic materials. Experimental verification demonstrates the applicability of this empirical rule to some typical compounds.
Article
Chemistry, Multidisciplinary
Xiao-Min Ding, Li Chen, Ying-Jun Xu, Xiao-Hui Shi, Xi Luo, Xin Song, Yu-Zhong Wang
Summary: In this study, a rigid-flexible integrated strategy was used to fabricate robust epoxy vitrimers (EVs) with superb mechanical properties comparable to conventional epoxy thermosets. The EVs exhibited high strength, ultratoughness, and rapid dynamic exchange of imine bonds. This strategy greatly broadens the application of EVs and provides a solution to the brittleness and flammability issues of conventional epoxy resins.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Polymer Science
Tetsu Sato, Mariko Takahashi, Takeshi Saito, Masahito Toyonaga, Itsuo Tanuma, Rie Yamada, Satoru Hosoda
Summary: An automatic evaluation system for photooxidation has been developed and successfully applied to assess the photo-OIT of LDPE samples containing photooxidation stabilizers. The system allows independent setting of various measurement conditions and provides detailed information on the photooxidation process.
POLYMER DEGRADATION AND STABILITY
(2024)
Article
Polymer Science
Zongzheng Zuo, Shuxue Zhou
Summary: In this study, three fluoroalkyl trimethoxysilane (FATMS) additives with different chain lengths were incorporated into a two-component polyurethane clearcoat to improve its hydrophobic durability. The coatings modified with FATMS maintained their surface hydrophobicity under various conditions, but quickly lost it when exposed to both UV irradiation and/or high temperature with water. The results suggest that the FATMS route is more suitable for indoor applications at room temperature.
POLYMER DEGRADATION AND STABILITY
(2024)
Article
Polymer Science
Song Li, Feng Zhao, Xueya Wang, Zhihua Liu, Jingze Guo, Yutong Li, Shuangmei Tan, Zhenxiang Xin, Shuai Zhao, Lin Li
Summary: Green flame retardants have garnered attention for their environmental friendliness, but current options fall short in achieving high flame retardancy for flammable polymers and maintaining environmental protection. This study takes a two-pronged approach to address flame retardants and the flame-retardant process. An eco-friendly bio-based synergistic flame retardant (PAU), synthesized using phytic acid (PA) and urea (U), is used to create a flame retardant coating that can be directly applied to any surface shape using polydopamine as an adhesive. The resulting EPS-PAU exhibits excellent flame retardancy, smoke suppression, and light weight while only slightly increasing the density.
POLYMER DEGRADATION AND STABILITY
(2024)
