CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Zhengyu Zhou,Bingbing Shi,Chengxin Zhang,Yiyun Wang,Pengfei Tang,Jiajun Feng,Jingjing Fan,Feng Jiang,Yongliang Ding
Persistent luminescence materials can find extensive applications in commodity packaging, labels, and certificates owing to their distinctive optical effects and visual appeal. Nevertheless, rising costs and complex preparation processes have hindered the further development of multi-counterfeit long afterglow materials. In this study, a series of persistent luminescence polyester amide (PEA) composites were prepared by blending bio-based PEA with persistent luminescence particles. Simultaneously, we leveraged the optical effects on the material surface and the superimposed colors theory to create a series of composite films with customizable persistent luminescence colors. By exploring various combinations, 29 distinct persistent luminescence colors were achieved from the initial three options. We also designed a multiple anti-counterfeiting film with color-coded functionality to harness the shape memory property conferred by the stretch-induced crystallization of PEA. This innovative approach transforms low-cost persistent luminescence single-counterfeiting materials into high-value multiple anti-counterfeiting products, thereby contributing to the evolution of bio-based composites. This study underscores the utilization of affordable persistent luminescence single anti-counterfeiting masterbatch, combined with the physical attributes of bio-based plastics, to create high-value multiple anti-counterfeiting materials and foster the development of bio-based industries.
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高影响因子
POLYMER
·
2025
·
IF 4.5
Wanjing Zhang,Liyan Wang,Yunsheng Chong,Wei Liu,Xin Qian
In this study, the copolyester plasticizers PHNAZ, synthesized from azelaic acid and hexanediol and modified by neopentyl glycol (NPG), was prepared via direct esterification. A series of characterization tests revealed that the number-average molecular weight of the PHNAZ copolyester plasticizers was less than 2000 with a dispersion coefficient of less than 2, demonstrating excellent thermal stability below 250 °C. PVC samples plasticized with PHNAZ showed thermal degradation temperatures above 250 °C, reduced glass transition temperatures to −33 °C, and significantly improved hydrophilicity. Notably, the water contact angle of PHNAZ-50/PVC was smallest, averaging 53.956°. The highlight of the study is the cytotoxicity testing of the prepared PHNAZ copolyester plasticizer at concentrations of 1 μg/mL, 10 μg/mL, and 50 μg/mL, where the average cell survival rate exceeded 100 %, indicating excellent biocompatibility. Additionally, PHNAZ displayed outstanding plasticizing effects, particularly PHNAZ-20/PVC, which achieved an elongation at break of 913.6 % and a plasticizing efficiency of 260.0 %. These results suggest that PHNAZ not only excels in chemical and thermal properties but also exhibits good biocompatibility and high plasticizing capability, indicating broad application prospects.
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Molecular Catalysis
·
2024
·
IF 3.9
Tao Liu,Youcai Zhu,Yue Mu,Xindi Feng,Zhen Liu
CO 2 -based polyols have a unique terminal hydroxyl group structure that makes them suitable for the production of high-performance polyurethane foams. Zn-Co double metal cyanides (DMC) are an important class of catalysts for the copolymerization reaction of CO 2 with propylene oxide (PO). In the DMC-catalyzed CO 2 /PO copolymerization to produce CO 2 -based polyols, the crucial role of chain transfer agents (CTAs) is emphasized. In this work, a high-performance composite CTA (c-CTA) was successfully developed by investigating various dicarboxylic acids and polypropylene glycol (PPG-400) as CTAs. This system combines the high reaction rate of the DMC/PPG-400 system with the high CO 2 insertion rate of the DMC/sebacic acid (SA) system, achieving 2-3 times higher activity than that of single CTA (PPG-400 or SA), reaching 0.5 kg/g. The molecular characteristics of the CO 2 -based polyols synthesized by different DMC/CTAs systems were analyzed by FTIR and 1 H NMR. The reasons for the high catalytic activity of the DMC/c-CTA system were elucidated by analyzing the hydrogen bond distribution in each DMC/CTA systems. Overall, this work provides a theoretical guidance for the development of novel CO 2 -based materials with high industrial application value.
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MICROCHEMICAL JOURNAL
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2024
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IF 4.9
Hongyan Tan,Min He,Dengke Zhang,Yiyu Zang,Donghua Chen,Junjie Fei
In this paper, a rhodamine 110 (R110) loaded and molecularly imprinted polymers (MIPs) coated microporous membrane-based fluorescent sensor has been constructed. The morphology, structure and performance of the sensor during the preparation process are characterized by SEM, FT-IR, UV–vis, fluorescene, BET and HPLC. The sensor retains the characteristic fluorescence emission peaks of R110, and the fluorescence changes to different concentrations of caffeic acid (CA) in the range of 0.01–200 µmol/L can obtain a good linear correlation with the detection limit of 3.3 nmol/L (3σ). The sensor possesses the advantages of easy preparation, simple operation, high stability, good sensitivity and selectivity, and strong anti-interference ability in the detecting of CA in herbal tea, exhibiting excellent potential application value in CA detection in different foods.
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EUROPEAN POLYMER JOURNAL
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2024
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IF 5.8
Yongliang Ding,Chengxin Zhang,Bingbing Shi,Yiyun Wang,Pengfei Tang,Cheng Liu,Jingjing Fan,Zhongkai Wang,Feng Jiang
Degradable polymers typically require prolonged exposure to harsh conditions for degradation, but this extended duration and severe treatment often result in incomplete breakdown, leading to the formation of harmful microplastics that pose significant environmental pollution risks. In this work, degradable alternating polyamide hard segments and soft crystallizable segments were combined by amide groups to design thermoplastic bio-based polyesteramide elastomers (PEAEs) with customizable properties and rapid degradability. The hard segment of the polymer features an alternating arrangement of amide and ester bonds. This arrangement facilitates the formation of small molecule monomers when the ester bond is broken, preventing microplastic contamination that may arise from incomplete degradation of the hard segment. Additionally, the inclusion of side groups in the soft segment disrupts the crystallization, enhancing its susceptibility to solvent penetration and thereby accelerating the degradation rate. After step-cyclic tensile tests, additional physical cross-linking points were formed in PEAEs to enhance their mechanical strength and elasticity. Furthermore, PEAEs demonstrated outstanding processing capabilities, including compounding, extrusion, pelletization, and spinning. This innovative approach introduces fresh design concepts for the industrial application of bio-based degradable polymers, playing a pivotal role in advancing resource conservation and environmental protection.
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RSC Advances
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2024
·Vol. 14
·期 33
·23662-23671
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IF 3.9
Wanjing Zhang,Liyan Wang,Hong Chen,Liying Guo,Yaoyao Bai,Xin Qian
A series of 2-methyl-1,3-propanediol (MPO) modified azelaic acid and hexylene glycol copolyester (PHMAZ) plasticizers with varying contents were synthesized using a direct esterification melt polycondensation method, and their structures were characterized systematically. Analysis using infrared spectroscopy and nuclear magnetic resonance spectroscopy confirmed the synthesis of the designed copolyester structure. Gel permeation chromatography (GPC) tests indicated that the number average molecular weight of each copolyester sample ranged between 2000 and 3000. These copolyesters were used to plasticize polyvinyl chloride (PVC) resin, and the glass transition temperature of the plasticized PVC samples was tested using a differential scanning calorimeter (DSC). Further characterization of the plasticizing effects was conducted using an electronic universal testing machine. The research results showed that as the content of MPO increased, the plasticizing effect of the copolyester initially increased and then decreased. Specifically, the copolyester containing 45% MPO, PHMAZ-45, demonstrated the best plasticizing effect on PVC, with the glass transition temperature of the plasticized PVC system around −35 °C, elongation at break at 908.4%, and a plasticizing efficiency of 254.5%. Additionally, this new type of copolyester plasticizer uses bio-based raw materials, exhibits excellent plasticizing effects, and the preparation process is stable and controllable. It holds promising potential to replace traditional volatile and toxic phthalate esters, presenting significant industrial application value.
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PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2024
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IF 5.3
Zongpeng Liu,Shaojian Hu,Yuning Zhang,Bencheng Wu,Jianhua Zhu
Synthetic esters are expected to have broad application prospects in the high-end lubrication sectors owing to their fascinating custom-tailored properties. Herein, we synthesized a novel complex polyolester (CPE) via a stepwise esterification procedure using stannous oxide as a heterogeneous catalyst. Response surface methodology coupled with the Box–Behnken design (BBD-RSM) was employed to optimize the experimental parameters and elucidate the interactions among the operating variables on the low-temperature fluidity of CPE. The optimization results indicated that the lowest pour point (−42 °C) could be obtained under the catalyst dosage of 1.2 wt%, the first step reaction temperature of 164 °C, the first step reaction time of 100 min, and the second step reaction temperature of 178 °C. Particularly, there is a significant interactive effect between the catalyst dosage and the second step reaction temperature. Followed by the molecular distillation of the crude ester prepared under the optimal conditions, the refining results revealed that the non-ideal components had been effectively removed and the total acid number of the final product was substantially reduced to below 0.1 mg KOH/g. The molecular structures of the as-synthesized esters were confirmed by FT-IR, NMR, GPC, ESI–MS, and TGA characterization and their physicochemical and tribological properties were also evaluated according to standard methods. In view of the unique molecular structural design, the developed CPE displayed plentiful prominent technological specificities, which makes it plausible to be served as a potential high-performance base stock. Therefore, the findings of this study may provide some valuable insights for expanding the application scope of synthetic esters into various special industrial scenarios.
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TRIBOLOGY INTERNATIONAL
·
2024
·
IF 6.1
Yiquan Wang,Yuxiang Liang,Yiya Li,Wenqi Rui,Jingjian He,Mengya Zhao
The performance requirements for extreme pressure and anti-wear properties, as well as oxidative stability, are increasingly stringent for MIL-PRF-23699G Enhanced Ester (EE) for aviation turbine engine lubricants. An oligomerization reaction of pentaerythritol through direct esterification using pentaerythritol and dibasic acid catalyzed by tetrabutyl titanate in xylene solvent, was employed to achieve the low-polymerization reaction of dibasic acid and pentaerythritol. A two-step synthesis process yielded a mixed ester comprising dibasic acid pentaerythritol complex ester and pentaerythritol tetrapentanoate. These mixed esters demonstrate excellent viscosity-temperature performance and good oxidative stability, significantly enhancing the extreme load-carrying properties and anti-wear properties of pentaerythritol tetrapentanoate. Molecular dynamics (MD) calculations indicate that complex esters possess higher adsorption energy and molecular interaction energy, enhancing the possibility of ester molecules adsorbing on metal surfaces and producing stronger oil film that can withstand large loads. The novel 5 mm 2 /s pentaerythritol ester containing diacid pentaerythritol complex esters exhibits improved viscosity-temperature performance, high-temperature oxidation resistance, and better tribological properties. Therefore, the novel pentaerythritol esters show potential for application in 5 mm 2 /s EE aircraft engine lubricants.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2025
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IF 2.8
Wanjing Zhang,Yuqi Shan,Liyan Wang,Yanming Chen,Liying Guo,Yunsheng Chong,Xin Qian
Currently, mainstream phthalate plasticizers pose serious threats to the environment and human health. As an eco-friendly and harmless alternative, polyester plasticizers have garnered widespread attention. However, their complex preparation process and low plasticizing efficiency have limited their practical application. In this study, a series of copolyester plasticizers (POMAZ), synthesized from azelaic acid, octanediol, and various contents of 2-methyl-1,3-propanediol (MPO), were prepared via direct esterification. The preparation process is controllable, and the number-average molecular weight of POMAZ ranges from 1000 to 4000, with a thermal degradation temperature above 270°C, demonstrating excellent thermal stability. PVC samples plasticized with POMAZ showed a decrease in glass transition temperature to −30°C and increased hydrophilicity with higher MPO content. Measurements of the tensile elongation at break of plasticized PVC verified the outstanding plasticizing performance of the POMAZ series. Specifically, POMAZ-45/PVC exhibited an elongation at break of up to 975.3%, with a plasticizing efficiency reaching 273.2%.
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JOURNAL OF ETHNOPHARMACOLOGY
·
2025
·
IF 5.4
Zhaolin Sun,Yuhua Wei,Shuangyi Ma,Yuchen Xu,Yuna Zhang,Changxian Li,Jinghan Zhang,Feifei Duan,Jianwei Jiao,Xiuying Duan
Ethnopharmacological relevance Metabolic dysfunction-associated steatotic liver disease (MASLD) is the most prevalent liver disease worldwide, primarily caused by poor lifestyle choices and dietary habits. Caulis Bambusae In Taenias , commonly known as Zhuru in Chinese, is a traditional Chinese medicinal material from the Bambusoideae family, frequently used for liver detoxification, liver protection, and lowering lipids. Aim of the study The study aimed to reveal the protective effects and underlying mechanisms of Zhuru extracts (EZR) in treating MASLD. Methods High performance liquid chromatography, liquid chromatography-tandem mass spectrometry, and fourier infrared spectroscopy were used to identify the components of EZR. We utilized oleic acid-treated HepG2/LO2 cells as in vitro models and zebrafish on high-fat diets (HFD) as animal models, and conducted network pharmacology, RNA sequencing, and biological assays, including confocal fluorescence, commercial kits, western blotting, and quantitative PCR, to investigate the lipid-lowering effect of EZR and its underlying mechanisms. Results EZR alleviated lipid accumulation in both in vitro and in vivo models. Analyses through network pharmacology and RNA sequencing revealed that the lipid-lowering properties of EZR were associated with pathways related to lipid biosynthesis, antioxidant functions, and anti-inflammatory mechanisms. Subsequent experimental validation confirmed that EZR decreased the expression levels of FASN, ACC1, HMGCR, ACLY, and LDLR. Additional findings indicated that EZR inhibited mTORC1 activation, leading to the suppression of SREBP1 and SREBP2, thereby mitigating lipid accumulation. Furthermore, EZR was found to downregulate oxidative stress and the levels of inflammatory cytokines. Conclusions EZR demonstrated the ability to lower lipid levels and alleviate HFD-induced MASLD. This is achieved by inhibiting mTORC1/SREBPs-related lipid biosynthesis and reducing oxidative stress and inflammation.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Dequan Chi,Chao Wu,Haoyu Gu,Xinchao Sun,Ruoxi Zhao,Dongjie Zhang,Zhimin Xie,Zhongjun Cheng,Yuyan Liu
Low levels of reversible actuation behavior have consistently been observed in mechanically programmed crystalline polymer networks (CPNs), which poses potential limitations for soft actuators' applications despite the ease of synthesizing CPNs. Here, we demonstrate a universal solution that overcomes this limitation by optimizing the lattice match between the CPN and the skeleton crystals. In particular, constructing unique cocrystal structures in the actuation domains is an effective optimization tool, as it can fine-tune the lattice features of the CPN by altering the cocrystal composition. As a result, the perfect lattice match is achieved through tailored cocrystals, resulting in a highly ordered arrangement of the actuation segments along the orientation of skeleton segments during activation. This maximizes the CIE effect and enables the target CPNs to clearly exhibit superior actuation capabilities compared to previous reports. This optimization effectively counters the decline in actuation capability caused by the integration of the photothermal conversion factor. Consequently, our materials can achieve remarkable shape switching between infrared irradiation and at room temperature, which makes them a promising option for use in artificial muscles and information security.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jingzhe Sheng,Tengda Du,Jingyi Zhang,Yuetong Huang,Shuo Wang,Mengyu Liu,Tao Zhang,YingJie Zhao,Hao Zhang,Qian Lv,Can Zhao,Xiaoxue He,Xinyu Cui,Mengze Gao,Qi Lu,Zhonggui He,Bingjun Sun,Tian Liu,Jin Sun
Hybrid chalcogen bonds bridged homodimer prodrug nanoassemblies demonstrated excellent self-assembly stability, sensitive redox responsiveness, and high drug delivery efficiency. However, nonadjustable high sensitivity of hybrid chalcogen bonds was usually accompanied by oxidative instability in the oxygen-rich systemic circulation, which limited their efficacy. To address this dilemma, we developed Mn 2+ -coordinated homodimer prodrug nanoassemblies. The coordination between Mn 2+ and chalcogen (Te, Se, S) mediated electron cloud redistribution through d-orbital hybridization, facilitating electron sharing. This electronic delocalization reduced the electron density surrounding chalcogen centers, improving their chemical stability and the pharmacokinetic properties of prodrugs. This coordination complex acted as a programmable dual-lock activation nanoregulator: (1) pH-sensitive cleavage of Mn 2+ coordination bonds within the tumor microenvironment mediated nanostructural disassembly, followed by (2) GSH/ROS-responsive prodrug release. Critically, the sequential activation mechanism maintained systemic inertness in normal tissues while exhibiting superior activation efficiency within tumors. Meanwhile, Mn 2+ activated the cyclic GMP-AMP synthase-stimulator of interferon genes pathway, enhancing antigen presentation and immune responses for a combined chemoimmunotherapeutic effect. This work proposed the reasonable design and construction of the metal-coordinated homodimer prodrug nanoassemblies based on the interactions between chalcogen of linkers and metal atoms, opening up new opportunities for developing more effective cancer therapeutics.
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