POLYMERS FOR ADVANCED TECHNOLOGIES
·
2024
·Vol. 35
·期 11
·e6598
·
IF 3.1
Lingmei Jiang,Chenghao Wang,Changhong Xiao,Guangsheng Zhang,Yibo Wang,Haoran Liu,Kuanyu Yuan,Lishuai Zong,Jinyan Wang,Xigao Jian
For large-area electronic and high shape complexity structure applications, various solution-processable materials are chosen as dielectric layer due to their simple molding process via spin-coating, casting, or 3D printing at room temperature. Herein, the acrylic-ended fluorinated hyperbranched polyaryletherketone ( hb -P6FAEK-Ace) was used as the prepolymer and then, the composition of photosensitive resin formula was regulated by adjusting the addition ratio of hb -P6FAEK-Ace and diluents (acrylimorpholine [ACMO] 1,6-Hexanediol diacrylate [HDDA]). These photosensitive resin solutions showed the relative low viscosities ranged ranging from 18 to 253 mPa S at 100°C which was in favor of the future 3D printing method and printing accuracy. Then, the obtained UV-cured films show the maximum tensile strength up to 71.9 MPa and superior thermal properties with the T g of 157°C–177°C and T 5% of 314°C–351°C. Moreover, they also exhibited the good dielectric performance with dielectric constants of 2.43–2.20 and dielectric loss of 0.013–0.014 at 1 MHz–1 GHz. These abovementioned satisfactory performance could be ascribed to the aromatic skeleton of hb -P6FAEK-Ace, introduced polarizability-CF 3 groups and the inner cavities for the hyperbranched structures, also the precise control of formula composition. Additionally, the curing degree, shrinkage of solid, and moisture properties were also researched thoroughly. This work provides a simple formula design though to construct the high performance and low dielectric photosensitive resin for the requirements of microelectronic applications.
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高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2024
·Vol. 35
·期 9
·e6552
·
IF 3.1
Di Wu,Ling Weng,Xiaorui Zhang,Lizhu Guan,Zijian Wu
The development of flexible piezoresistive sensors has increasingly attracted widespread attention due to their various potential applications in wearable devices, human–machine interfaces, and health monitoring systems. Developing high-performance sensors that can accurately monitor movement and human health monitoring is very necessary. This study uses silver nanoparticles, MXene, and polypyrrole to prepare conductive fabrics based on various fabrics through layer-by-layer encapsulation. Finally, conductive fabrics with different layers were encapsulated to prepare a multilayer fiber sensor. Next, the series piezoresistive performance of sensors made of different fabric materials and sensors with different layers were tested. The experimental results show that the sensor prepared has the best performance when the selected fabric material is mulberry silk and the number of layers of the fabric is five. After testing, the sensitivity of the sensor is 4.9029 at low strain and 0.7901 at high strain. Moreover, it exhibits good stability during 1600 compression-release cycles and temperatures range from −20 to 60°C. The designed sensor performs well in motion and human physiological signal monitoring. This study provides new ideas and references for the design and research of multilayer fiber sensors.
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高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2025
·Vol. 36
·期 3
·e70137
·
IF 3.4
Dongfang Liu,Yu Jing,Guiwen Deng,Tingmei Huang,Liqin Huang,Mengxia Guan,Chunyan Lei,Yiwei Zhang,Mingjuan Chen,Keran Wei,Yuanyuan Zhang
The development of hydrogel wound dressings that facilitate rapid healing is a complex task, primarily due to the necessity of integrating multiple functional attributes, including air permeability, adhesion, antibacterial efficacy, and biocompatibility. In this study, we employed fatty acid-modified carboxymethyl chitosan (CMCS) to fabricate a multifunctional antibacterial hydrogel dressing. This dressing exhibits adjustable hydrophobicity, robust mechanical properties, and potent antibacterial activity, with polyacrylamide (PAM) and tannic acid (TA) serving as the primary constituents. The study demonstrated that the incorporation of hydrophobic structures significantly enhanced the tensile strength, compressive properties, and adhesive capacity of hydrogels. In addition, the release curve of TA showed that fatty acids played a vital role in enhancing the antibacterial properties of hydrogels, which may increase the release of TA. Furthermore, the length of the carbon chain has a significant effect on the mechanical properties and hydrophobic properties of the hydrogel. In summary, the TA/(C14-g-CMCS)/PAM hydrogel has excellent antibacterial properties, which can effectively prevent bleeding, accelerate wound closure, and promote tissue regeneration. Therefore, the TA/(FA-g-CMCS)/PAM hydrogel with adjustable hydrophobicity is expected to be the best candidate for accelerating wound healing and promoting rapid regeneration of skin tissue.
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高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2024
·Vol. 35
·期 3
·e6314
·
IF 3.1
Yufeng Zhao,Dafu Wei,Xiang Xu,Yong Guan
In order to protect the marine environment, traditional marine antifouling coatings such as tributyltin (TBT)-based antifouling coatings have been phased out. There is an urgent need to develop environmentally friendly marine antifouling coatings. In this work, the antibacterial poly(hexamethylene guanidine) (PHMG) was introduced into polyurethane (PU) through chemical bond to prepare a green environmentally friendly marine antifouling coating (PU-PHMG). The morphology, antimicrobial properties, mechanical properties and thermostability of the PU-PHMG films were investigated. The antimicrobial rates of PU-PHMG films against E. coli and S. aureus were both more than 99.9% when PHMG content in the films reached 1.0 wt%. The excellent antimicrobial activities can be maintained for more than 90 days due to the non-leaching characteristic of PHMG. The growth of algae was also inhibited on the surface of PU-PHMG films. The PU-PHMG coating is promising for the applications in marine antifouling field.
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高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2024
·Vol. 35
·期 4
·e6357
·
IF 3.1
Wenhua Hou,Lishuai Zong,Linyan Zhu,Jiaming Wang,Yabin Zhang,Zhansheng Li,Jinyan Wang,Xigao Jian
A tetraphenylethylene-containing bisphenol monomer 5-[4-(triphenylvinyl)phenyl]benzene-1,3-diol (TPE-OH) was designed and synthesized by Suzuki coupling and nucleophilic substitution reaction. By adjusting the proportion of TPE-OH, a series of rigid polyaryl ether, namely PPTES, were facilely synthesized by homopolymerization or copolymerization with 4-(4-hydroxyphenyl)-2,3-diazepine-1-one (DHPZ) and 4,4′-difluorodiphenyl sulfone (DFS). The following characterization of their structures with nuclear magnetic resonance and infrared spectroscopy confirmed successful synthesis of both monomers and polymers. Large, volume-twisted and non-coplanar rigid tetraphenylethylene could effectively increase the molecular chain spacing and reduce the regularity of the molecular chain, as evidenced by molecular dynamics simulation with Materials Studio, in turn to form an amorphous nature of PPTES phase state. In addition, such PPTESs have excellent solubility, heat resistance, and other comprehensive properties. Their glass transition temperature ( T g ) is between 219 and 300°C, and the 5% thermogravimetric temperature of PPTESs locates at 490–539°C under N 2 atmosphere. At 1 GHz, the intrinsic dielectric permittivity of polymer films is between 2.32 and 2.61, gradually decreases with TPE-OH content. This work would provide new idea and choice for the selection of polyaryl ether resin bisphenol monomer, and promote the development and application of low-dielectric polyarylether materials.
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高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2011
·Vol. 23
·期 10
·1329-1334
·
IF 1.776
Nianjun Kang,Zhongjie Du,Hangquan Li,Chen Zhang
In this report, a novel phosphorus/silicon-containing reactive flame retardant, hexa(3-triglycidyloxysilylpropyl)triphosphazene (HGPP), was synthesized and characterized by Fourier transform infrared spectrometry and nuclear magnetic resonance spectra ( 1 H, 31 P, and 29 Si), respectively. To prepare cured epoxy, HGPP had been co-cured with diglycidyl ether of bisphenol-A (DGEBA) via 4,4-diaminodiphenylsulfone as a curing agent. The mechanical, thermal, and flame retardant properties of the cured epoxy were evaluated by dynamic mechanical analysis, thermogravimetric analysis, and limiting oxygen index (LOI). According to these results, it could be found that incorporation of HGPP in the cured epoxy system showed good thermal stability, high LOI values, and high char yield at high temperature. As moderate loading of HGPP in the epoxy system, its storage modulus and glass transition temperature were higher than those of neat DGEBA. Copyright © 2011 John Wiley & Sons, Ltd.
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高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2011
·Vol. 23
·期 4
·765-775
·
IF 1.776
Hualun Cai,Xiuju Zhang,Kai Xu,Huan Liu,Jiangxun Su,Xin Liu,Zien Fu,Ying Guo,Mingcai Chen
Octaphenylsilsesquioxane (PH-POSS) and octa(γ-methacryloxypropyl)silsesquioxane (MA-POSS) were successfully synthesized by hydrolytic condensation of phenyltrichlorosilane and γ-methacryloxypropyltrimethoxysilane, and characterized by Fourier transform infrared (FT-IR), 1 H and 29 Si nuclear magnetic resonance (NMR), and matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF) mass spectrum. Morphology, degradation behavior, thermal, and mechanical properties of hybrid composites were studied by transmission electron microscopy (TEM), polarized optical microscopy (POM), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), surface contact angle (SCA), tensile, and impact testing. Domains of PH-POSS and MA-POSS dispersed in the matrix with a wide size distribution in a range of 0.1–0.5 µm, while PH-POSS exhibited a preferential dispersion. Because of the possible homopolymerization of MA-POSS during the melt blending, the glass transition temperature of polycarbonate (PC)/MA-POSS composites remained nearly unchanged with respect to PC/PH-POSS composites that showed a depression of T g due to the plasticization effect. It is interesting to note that the incorporation of POSS retarded the degradation rates of PC composites and thus significantly improved the thermal stabilities. Si O fractions left during POSS degradations were a key factor governing the formation of a gel network layer on the exterior surface. This layer possessed more compact structures, higher thermal stabilities, and some thermal insulation. In addition, percentage residues at 700°C ( C 700 ) significantly increased from 10.8% to 15.8–22.1% in air. Fracture stress of two composites showed a slight improvement, and the impact strength of them decreased monotonically with the increase of POSS loading. Copyright © 2011 John Wiley & Sons, Ltd.
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高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2024
·Vol. 35
·期 12
·e70000
·
IF 3.1
Hangqi Zhao,Wenrui Yao,Guoying Liu,Kang Chen,Mengyao Liu,Ce Sun,Haiyan Tan,Jun Shen,Yanhua Zhang
Starch adhesives are often used in the plywood sector. They are sustainable, formaldehyde-free, and biodegradable. However, the problems of poor gluing strength and hydrophobicity need to be overcome. In this study, natural starch was oxidized by sodium persulfate to obtain oxidized starch. Oxidized starch adhesive (SSA-15%) was crosslinked with PVA. The results show that the dry and wet shear strength of the prepared oxidized starch adhesive (SSA-15%) can reach 2.95 MPa and 1.31 MPa, which is 163% and 120% higher than that of the natural starch adhesive. Sodium persulfate causes the large number of hydrophilic hydroxyl groups in starch to oxidize directly to carboxyl groups, improving the hydrophobicity of starch. The hydroxyl group present in oxidized starch interacts with the secondary hydroxyl group in PVA to form a hydrogen bond. This interaction enhances the adhesive bonding performance, resulting in improved mechanical properties and increased bonding strength of the final products, while also contributing to the formation of a more robust network structure. The study showed that the oxidized adhesive has good hydrophobicity and storage thermal stability. It is a simple and green biomass wood adhesive, which provides theoretical support for the promotion and application of aldehyde-free adhesives.
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高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2025
·Vol. 36
·期 2
·e70106
·
IF 3.4
Jingbo Shen,Yakai Feng
Thermal interface materials are crucial for the thermal management of modern electronic devices. The thermal conductivity of polymer-based composites, as the widely used thermal interface materials, is still limited by the high interfacial thermal resistance between the polymer matrix and the filler. Herein, pitch-based carbon fibers co-modified with silane coupling agent and Ag nanoparticles were developed and used as thermally conductive fillers to prepare silicone composites with the purpose of improving interfacial compatibility and reducing interfacial thermal resistance. Under scanning electron microscope observation, the modified carbon fibers dispersed uniformly, and they were adhered to by a number of Ag nanoparticles. The thermal conductivity of the silicone composite with a 20 wt% filling amount of modified carbon fibers reached up to 1.624 W m −1 K −1 , which was 1.46 times higher than that of the unmodified carbon fiber filled silicone composite. The silicone composite with a 20 wt% filling amount of modified carbon fibers also exhibited a relatively high heat transfer rate and excellent mechanical properties. The electrical insulation and dielectric properties of silicone composites filled with modified carbon fibers also satisfied the requirements for the use of thermal interface materials. This approach provided an effective strategy for the development of thermal interface materials with high thermal conductivity in the thermal management field.
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高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2024
·Vol. 35
·期 6
·e6424
·
IF 3.1
Jianyong Liu,Hongxia Li,Chenhao Shi,Yi Liu,Changcan Shi,Xuedong Sun,Xujian Li,Xumin Chen
In hemodialysis, tunneled cuffed catheter (TCC) is commonly used as a medical device for establishing vascular access. To address the current problem that the skin tunnel of TCC is susceptible to bacterial infection, this work proposes quaternized modification of the cuff of TCC to comprehensively enhance the long-lasting antimicrobial performance of TCC. The morphology of the cuff basically resembles the polyethylene terephthalate (PET). Via ultraviolet (UV) irradiation, acrylic acid (AA) was grafted onto PET. Then, amino polysaccharide quaternary ammonium salt (As) replaced H + of the carboxyl groups on the macromolecular chain of PET through solution post-treatment method. Through the single factor experiment, the degree of grafting reached 159.8% under the optimum preparation conditions (AA concentration of 25 vol%, H + concentration of 0.2 mol/L, photosensitizer capacity of 15 wt%, and photo-irradiation time of 30 min). By the above method, we successfully synthesized a highly hydrophilic, well biocompatible, and highly efficient antimicrobial PET-g-PAA@As. Animal experiments and histological analyses showed that PET-g-PAA@As was superior to PET control and blank control groups in controlling infection and promoting wound healing. This catheter material with excellent biocompatibility, sustained antimicrobial activity, and wound healing ability will have great potential for use in hemodialysis.
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高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2025
·Vol. 36
·期 3
·e70136
·
IF 3.4
Ping Xie,Jing He,Yangjun Ou
Photothermal therapy is a promising adjunctive treatment technique requiring a nanoplatform with excellent biocompatibility, photothermal stability, and precise targeting capabilities. This study aims to develop such a nanoplatform by synthesizing two new manganese(II)-based coordination polymers. The polymers were created by integrating 1,4-bis(imidazol-1-yl)benzene with the ternary ligand tris( p -carboxyphenyl)phosphane oxide, resulting in the formulas {[Mn 3 (L) 2 (bib) 3 (H 2 O) 7 ]·12H 2 O} n (CP 1 ) and {[Mn(HL)(bib)]·H 2 O} n (CP 2 ). These structures, with large surface areas and porosity, enhance drug loading efficiency. Doxorubicin (DOX) was successfully incorporated into a biocompatible HA/CMCS hydrogel-CP composite (HA/CMCS-CPs@DOX), forming a robust nanotherapeutic platform. Under near-infrared light irradiation, these metal-hydrogel composites effectively induced localized hyperthermia, aiding ocular melanoma treatment. We evaluated the effect of HA/CMCS-CP 2 @DOX on the cell proliferation of the uveal melanoma cell line, and the regulatory effects of the system on lncRNA ARAP1-AS1/miR-149-3p/S100A4 were also explored.
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高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2025
·Vol. 36
·期 1
·e70079
·
IF 3.4
Danni Yang,Tao Luo,Tao Zhang,Li Lv,Zongpeng Zou,Shengwei Tang
Ion exchange membranes of new chemistry based on polymer blends are proposed through a convenient solution-blending process using the hydrophobic commodity polymer polyvinyl chloride (PVC) and the hydrophilic polyvinylpyrrolidone (PVP), which are completely miscible. The pyrrolidone groups can be protonated to form oxonium ions, functioning as transient fixed positive charges for fractioning sulfuric acid and sulfates via diffusion. The influence of PVC molecular weight and the membrane composition on the physical, chemical properties, and mass transfer performance of PVC-PVP blend membranes was systematically investigated. After equilibrium in 2.68 mol/L sulfuric acid, the sulfuric acid, and water contents in the blend membranes increase with the increase of the membrane PVP contents (20–75 wt%). The permeability coefficients of sulfuric acid and ferrous sulfate for the blend membranes also exhibit a gradual increase. Membranes of mass transfer properties comparable to commercial ones can be easily obtained by tuning the membrane PVP contents. It is proved that the larger sulfuric acid permeability over sulfates (FeSO 4 as an example) is due to both larger solubility and diffusion coefficient of sulfuric acid in the membrane phase. The optimal PVC-PVP blend membranes have shown nice performance in fractioning sulfuric acid from sulfates, when treating titania waste acid. This study provides valuable guidance for the design of high-performance yet low-cost ion exchange membranes with pyrrolidone chemistry from commodity polymers for resource recovery.
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高影响因子
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