EUROPEAN POLYMER JOURNAL
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2026
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IF 6.8
Yiqing Wang,Jingkai Liu,Ziyu Liu,Jinyue Dai,Xiaoqing Liu
Currently, the mainstream organic phase change materials (PCMs) like paraffin are almost petroleum-derived and typically incinerated at end-of-life, raising sustainability concerns. Herein, a bifunctional PCM (C-ah-HDI) was synthesized from renewable cardanol which also shows high-value upcycling characteristics. The incorporation of reversible intermolecular hydrogen bonds yields a high melting temperature ( T m ) of 104.9 °C, outperforming most organic PCMs. The acceptable latent heat (Δ H m ) of 110.1 J g −1 and excellent cycling stability (>50 cycles) ensure reliable thermal storage application. When encapsulated in expanded graphite (EG), the composite demonstrates significant potential for photothermal conversion. Crucially, under thermal runaway conditions, C-ah-HDI undergoes ring-opening polymerization (ROP) to form a crosslinked network, imparting intrinsic flame retardancy that reduces the peak heat release rate by 62.3% compared to a commercial organic PCM. Demonstrating a circular economy approach, end-of-life C-ah-HDI was successfully upcycled as a reactive modifier for a commercial polybenzoxazine (PH-ddm). At an optimal loading of 5 wt%, the copolymer exhibited a 18.4% increase in impact strength and a 7.8% increase in tensile strength, transforming a potential waste stream into a value-added reinforcing and toughening agent. This work presents a compelling strategy for molecular design of organic PCMs integrating performance, safety, and sustainability.
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CHEMISTRY OF MATERIALS
·
2026
·
IF 7.1
Siqi Liu,Yinfang Zhang,Yifan Ge,Hairui Deng,Jin Wen,Yangju Lin,Yinjun Chen,Meifang Zhu
Polymer chain orientation and microstructures are crucial to achieving high performance in fibers. However, in situ detection and further control of these polymer-condensed matter structures during fibrous processing are challenging due to the high velocity of spinning and the small size of fibers. Here, we report a visual approach for monitoring polymer microstructures and chain alignment in fibers by the mechanically induced fluorescent color change of perylene diimide (PDI) mechanophores. PDI derivatives with different solubilities were synthesized and used to prepare solutions with distinct fluorescence colors, arising from varying degrees and packing of aggregation. The mechanism of distinct fluorescence further guided the synthesis of mechanoresponsive polyurethanes by embedding various contents of PDI along the polyurethane backbone. The resulting polyurethanes exhibited obvious fluorescence color change during deformation owing to the dissociation of PDI stacking, enabling real-time monitoring of microstructures in fiber processing. A fluorescent color change from red to green was observed during hot stretching, indicating the associated orientation of the polymer chains and crystalline formation. These microstructural changes, analyzed by WAXD, are quantitatively reflected in the reinforcement of fiber mechanical properties. Accordingly, the relationship between fluorescent color and fiber strength or modulus was established to enable the in situ visual detection of fiber mechanical properties during spinning. The unique mechanoresponsive mechanism of PDI mechanophores points to a novel application of noncovalent polymer mechanochemistry in the field of fiber technology.
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PROGRESS IN ORGANIC COATINGS
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2023
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IF 6.6
Jialiang Kang,Xueting Wang,Xiaoxiang He,Cun Lv,Caixia He,Zhanxiong Li
In this study, the perfluoropolyether carboxylic acid (PFPE-COOH) was used to react with polycaprolactone (PCL) to synthesise the hydrophobic block copolymer PCL- b -PFPE. The esterification reaction was performed successfully with the terminated hydroxyl group in the PCL-OH after activation of PFPE-COOH with N, N′ -dicyclohexyl carbon diimide. The PCL- b -PFPE was dissolved in various solvents to prepare microspheres using electrostatic spraying technology, and the flow rate, voltage, temperature and humidity parameters were optimised. The findings demonstrated that the solvent and ambient humidity had a substantial influence on the microspheres' surface morphology . Through smooth surface morphology, chloroform (CF) single solvent formed an ideal microsphere and DMF/CF mixed solvent produced a ‘pit’ surface morphology. Furthermore, the surface roughness of microspheres increases with an increase in humidity. The static contact angles of electrostatic spraying polyester fabric were 147.1° ± 1.8°, 150.9° ± 1.5°, 156.3° ± 2.6° and 155.9° ± 3.3°, under 20 %, 40 %, 60 % and 80 % humidity, respectively. The findings demonstrated that during the electrostatic spraying, the PFPE chain's introduction into PCL helped construct the secondary rough morphology on the microsphere surface and substantially enhanced the hydrophobicity of coatings, providing the finished polyester fabric super-hydrophobicity. The PCL-b-PFPE microspheres were directly sprayed and coated with the developed spray solution via electrostatic spraying. The water contact angle of the finished polyester fabric was found to be ≥140°, which provided hydrophobicity after 5 cycles of laundry. Following the sandpaper abrasion and adhesion tests, the contact angle of the fabrics coated with the microspheres remained ≥145°, indicating a good mechanical stability.
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ChemistrySelect
·
2023
·Vol. 8
·期 29
·e202301647
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IF 2.1
Fen Zheng,Jianghuan Shi,Shanming Zhang,Kaige Liu,Long Xu
Graphical A novel containing cinnamaldehyde pH-sensitive biodegradable linear copolymer carrier mPEG- b -poly(Schiff base-acetal) was designed and synthesized, which could co-delivery of cinnamaldehyde and gemcitabine to same tumor cells and pH-responsive release cinnamaldehyde and gemcitabine for double drug synergistic antitumor therapy. Due to significant pH difference among the healthy tissue, tumor tissue as well as intracellular endo/lysosome, constructing pH-responsive biodegradable nanodrug delivery systems has received more and more attention. Herein, double-end alkenylated acetal monomer (based on cinnamaldehyde (CA)) and double-end sulfhydrylation Schiff base monomer were designed and synthesized, and three pH-responsive biodegradable block copolymer mPEG- b -poly(Schiff base-acetal) (P1), mPEG- b -poly(acetal) (P2), and mPEG- b -poly(Schiff base) (P3) were obtained by Michael addition reaction. All these polymers could be self-assembled with gemcitabine (GEM) to form GEM-loaded micelles. Proton nuclear magnetic resonance ( 1 H NMR) and dynamic light scattering (DLS) experiments proved that these polymer micelles have good pH responsiveness. The size and morphology of both blank and GEM-loaded micelles were characterized by DLS and scanning electron microscope (SEM). The GEM/P1, GEM/P2, and GEM/P3 micelles exhibited pH-sensitive drug release properties and the GEM/P1 micelles has the relatively fastest drug release rate. Containing multiple acetal and Schiff base moieties GEM/P1 micelles showed fastest cellular internalized rate and best in vitro antitumor activity among all GEM-loaded micelles.
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Journal of Materials Chemistry C
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2022
·Vol. 10
·期 22
·8791-8796
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IF 8.067
Jie Liu,Si-Yu Gao,Xin-Yi Zhang,Yakai Feng,Han-Chun Wu,Zhijian Chen,Maxim V. Bermeshev,Xiang-Kui Ren
POSS-containing polynorbornene with pendant perylene diimide (PPDI-POSS) has been synthesized, with alkyl-containing polynorbornene (PPDI-C10C8) as the reference. The supermolecular structure and photoluminescence properties were elucidated using UV-Vis absorption spectra, and one- and two-dimensional X-ray diffraction. The experimental results reveal that PPDI-C10C8 possesses a lamellar structure with close PDI stacking to meet the requirement for minimum free energy. However, the introduction of POSS cages endows PPDI-POSS with a unique hexagonal columnar structure and enhanced photoluminescence properties due to the steric hindrance of POSS cages. These results may contribute to the understanding of the structure–property relationship of the optical polymers and provide some useful information for the design of polymer materials with a controllable supramolecular structure and tunable luminescence properties.
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JOURNAL OF CHROMATOGRAPHY A
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2021
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IF 4.759
Yujie Zhang,Min Chen,Shouyong Zhou,Haifeng Han,Mingliang Zhang,Hongdeng Qiu
A highly efficient carbonylative coupling method for the preparation of alkyl stationary phases with variable numbers of carbamate groups was established. The effectiveness of such method was verified through elemental analysis, X-ray photoelectron spectroscopy and solid-state 13 C nuclear magnetic resonance spectroscopy of three as-synthesized stationary phases bearing different alkyl chains and different numbers of carbamate groups (octadecyl/one carbamate group, C18C; docosyl/three carbamate groups, C22C 3 ; triacontyl/two carbamate groups, C30C 2 ). The comparative evaluation of these stationary phases using a great variety of analytes, including three sets of isomers of alkylbenzenes, two sets of standard mixtures of polycyclic aromatic hydrocarbons (SRM 1647e and 869b), nine polychlorinated biphenyls, fiveteen N-substituted ureas, ten sulfonylureas, five xanthines and some other phytonutrients, revealed their remarkable applicability in reversed-phase liquid chromatography. Notably, the intercalated carbamate groups rendered the resultant stationary phases compatible with 100% aqueous mobile phase. The suppression of silanol activity was positively related to the number of polar groups embedded in the bonded selector, and the smallest peak tailing factor (1.14) for amitriptyline was obtained by C22C 3 . The molecular shape-related selectivity was found to be more closely related to the length of the selector's aliphatic chain, as supported by the lowest α TBN/BaP value (0.31) by C30C 2 . These carbamate-embedded alkyl stationary phases constituted another class of polar-embedded stationary phases possessing a single type of functional ligand.
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Chemistry-An Asian Journal
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2018
·Vol. 13
·期 14
·1784-1790
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IF 3.692
Ming Wang,Qi-jian Zhang,Zhuang Li,Hua Li,Jian-Mei Lu
Graphical Remember this? A sandwich-structured device of indium tin oxide (ITO)/polymer/aluminum exhibited different electrical behavior and threshold voltages in different solvent mixtures of different ratios (see figure). This study suggests that polymeric memory behavior can be efficiently adjusted through the use of mixed solvents. The large polydispersity index of functional pendant polymers has hindered their application in semiconductors. Herein, a novel pendant polymer with perylenediimide (PDI) in the side chains was successfully synthesized through ring-opening metathesis polymerization (ROMP) with a very low polydispersity index. The synthesized polymers were spin-coated on indium tin oxide (ITO) substrate by using a mixture of 1,2-dichlorobenzene ( o -DCB) and methanol (MeOH) solvents. The surface morphologies and intermolecular π–π stacking of the fabricated film could be adjusted through tuning of the ratio of o -DCB and MeOH, and thus, the sandwich-structured device of ITO/polymer/aluminum exhibited different electrical behavior. The threshold voltages of the devices decreased as the MeOH content was increased from 0 to 30 % (v/v); however, the device changed from being unrewritable to rewritable if the MeOH content was increased to 40 %; a probable mechanism for this process is discussed. It is hoped that this new idea of synthesizing narrow polydispersity index pendant polymers, and the fabrication of high-quality films through the use of a mixture of solvents could allow high-performance memory devices to be prepared in the future.
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Nanoscale
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2018
·Vol. 10
·期 39
·18857-18868
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IF 7.233
Haipeng Wang,Wulong Li,Zhanxiong Li
In this study, fluorinated polycaprolactone (PCL) block polymers with different fluorine contents were synthesized via atom transfer radical polymerization (ATRP). An electrospraying technique was used to prepare fluorinated PCL microspheres with different microstructures. In contrast to the golf ball shape of unmodified PCL microspheres displaying porous pits on the surface, block polymer PCL-PTFOA(2 h) and PCL-PTFOA(6 h) microsphere surfaces displayed regular honeycomb-like pore structures. Thermally induced and evaporation-induced phase separations are proposed as the main mechanisms involved in the formation of the porous microstructures. The micro-phase separation between the two blocks of the fluorinated PCL copolymer is another factor that promoted the uniform collapse on the microsphere surface and the formation of its rugged wall. The surface roughness of the porous microspheres significantly improved their hydrophobicity, generating coating contact angles on aluminium foil substrates that measured as high as 162.4 ± 1.5°, which revealed that the surfaces were super-hydrophobic. Lastly, cotton fabric was directly coated with the fluorinated polymer microspheres via electrospraying, resulting in super-hydrophobic surfaces and CAs reaching 160.0 ± 1.3°. The results demonstrate that electrospraying is a simple, innovative and cost-effective method for preparing polymer microspheres with controllable microstructures for fabric coating applications.
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Polymer Chemistry
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2017
·Vol. 8
·期 48
·7486-7498
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IF 5.375
Bing Wang,Ping Chen,Ji Zhang,Xiao-Chuan Chen,Yan-Hong Liu,Zheng Huang,Qing-Ying Yu,Ju-Hui Zhang,Wei Zhang,Xi Wei,Xiao-Qi Yu
With the aim to develop a novel multifunctional gene delivery system that may overcome the common barriers of gene transfection, two amphiphilic molecules with tetraphenyl ethylene (TPE) as a hydrophobic moiety and linear PEI-galactose as a hydrophilic part were elaborately designed and synthesized. The molecules could self-assemble to form micelles and exhibited aggregation-induced emission (AIE) property, which may be used for cell imaging. Several assays revealed that the disulfide bond in TSPG may facilitate vector decomposition and DNA release, resulting in higher transfection efficiency and lower cytotoxicity than TCPG and PEI 25 kDa. These vectors showed excellent serum tolerance, and even higher efficiency could be obtained in transfection with the presence of serum. Moreover, the transfection in different cell lines showed that TSPG complex could induce higher gene expression in asialoglycoprotein receptor-rich HepG2 cells than in HeLa cells, which lack such receptors. Galactose competition assay also demonstrated that the galactose moiety could afford the vector with targeting ability toward hepatoma cells. Cellular uptake inhibition assay indicated that the DNA complex entered the cell mainly via caveolae-mediated endocytosis. Results showed that TSPG may serve as a promising reagent for simultaneous gene transfection and imaging with good biocompatibility and cell targeting ability.
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SENSORS AND ACTUATORS B-CHEMICAL
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2017
·
IF 5.401
Rong-Fu Huang,Liu-Ting Wang,Qi-Qi Gai,Dong-Mei Wang,Lei Qian
DNA adsorption and recognition are selective for carbon nanotubes (CNTs). In this work, we reported a novel method for control of electrochemiluminescence (ECL) enhancement through selective assembly of CNTs with DNA on indium tin oxide (ITO) electrode. The successful assembly of CNTs with well-preserved electrochemical conductivity was confirmed by scanning electron microscope and electrochemical impedance spectroscopy measurements. In comparison with the bare ITO electrode, the presence of CNTs catalyzes electrochemical reaction of an ECL coreactant, tri- n -propylamine, present in the solution, producing significantly enhanced ECL signal and ensuring substantial signal amplification. It is demonstrated that the efficiency of ECL enhancement is inversely correlated with the DNA recognition reaction, offering a promising ECL sensing platform for label-free and universal bioassay. The proposed strategy definitely differs from those works previously reported the introduction of CNTs for ECL enhancement, allowing the rise of ECL enhancement to be designed based on a biological recognition process. Just instead of the capture probe sequences, it is confirmed that the assembly of DNA with CNTs enables quantitative analysis of the different types of targets, including nucleic acid, Hg 2+ and thrombin.
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MACROMOLECULES
·
2025
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IF 5.2
Meijia Gong,Luping Wang,Kaiyang Hou,Kaiqiang Zhang,Xu Wang
Optimizing supramolecular interactions is crucial for enhancing the damage resistance of elastomers under extreme mechanical stresses. However, the underlying mechanisms remain not fully understood, making targeted design challenging. This study thoroughly investigates a series of polyurethane elastomers and presents a strategy to enhance elastomer damage resistance by tuning the number and strength of hydrogen bonds at the hard–soft interface. Within these elastomers, we find that the hardness is positively correlated with the number and strength of hydrogen bonds, while toughness increases with the number of hydrogen bonds, reaching a maximum at moderate bond strength. Elastomers with both high hardness and toughness demonstrate superior impact resistance, while the best tear resistance is achieved with moderate hardness and high toughness. By balancing hydrogen bond acceptors in the soft segment with donors in the hard segment, an elastomer with an exceptional impact strength of 9.2 MJ m–2 is obtained, and tear resistance of 275.0 kJ m–2 is achieved by modulating the interaction strength. This research clarifies structural factors influencing damage resistance, including the number and strength of hydrogen bonds at the hard–soft interface, offering valuable insights for the design of highly impact- and tear-resistant elastomers.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Chang-An Xu,Xingchi Li,Zhengbang Tong,Zhuangzhuang Chu,Heng Fang,Yang Hu,Xudong Chen,Zhuohong Yang
Although the coating can effectively prevent metal corrosion, it is easy to form micro-pores and micro-cracks during the curing process, and the coating is inevitably damaged by the external environment during use, resulting in a reduction in its protective ability, thereby shortening the service life of the substrate. Inspired by the stress closure function of mimosa, an intelligent anti-corrosion coating with stress closure function against corrosion products (Fe 2+ ) was prepared by using pyridine derivatives and lignin grafted graphene oxide (ATGO). By density functional theory calculation, the binding energy of pyridine group and Fe 2+ was −369.99 kcal/mol, and their strong complexation would facilitate the formation of a dense protective layer at the metal corrosion interface. The test results showed that ATGO-CM coating had high fracture strength (86.9 MPa) and adhesion strength (2.03 MPa), as well as low water vapor permeability (1.3 × 10 -6 g m −1 day −1 Pa −1 ). Electrochemical testing denoted that after soaking in 3.5 wt% saline solution for 100 days, the impedance modulus of the ATGO-CM coating remained at 5.36 × 10 9 Ω·cm 2 at low frequencies (f = 0.01 Hz), which was two orders of magnitude higher than the blank group. Through scratch experiments showed that the complexation effect of pyridine groups and corrosive products could significantly improve the corrosion resistance of the coating, with R ct value of 1.8 × 10 4 Ω cm 2 for the damaged coating, one order of magnitude higher than the blank group. This work not only provided a reference for the preparation of intelligent anti-corrosion coatings with bionic functions, but also increased the added value of biomass materials.
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