POLYMERS FOR ADVANCED TECHNOLOGIES
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2024
·Vol. 35
·期 1
·e6269
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IF 3.1
Mirza Nadeem Ahmad,Muhammad Naveed Anjum,Muhammad Fayyaz Farid,Atta-ul Haq,Akbar Ali,Muhammad Fayyazur Rehman,Mohammed A. Assiri,Muhammad Safwan Akram
Water pollution is growing at an alarming rate, particularly due to the colored wastewater released by the various industries into aquifers and fresh water sources, and in some extreme cases, they have reached the water table. Faisalabad, a city in Pakistan where there is an industrial cluster of textiles dyeing and manufacturers, water table has become undrinkable. The presence of hazardous dyes and chemicals imposes serious health issues on humans, animals, and plants. The treatment of such toxic dye effluents is crucial and could be done by efficient degradation methods such as photocatalysis. The current study presents synthesis of poly( o -methylaniline)/zinc oxide/reduced graphene oxide nanocomposite (POMA/ZnO/rGO NC) using a chemical oxidative polymerization process and explores its properties as a photocatalyst by demonstrating degradation of three dyes. The composite was characterized using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), photoluminescence emission spectroscopy (PL), Brunauer Emmett–Teller analysis (BET), and UV–visible spectroscopy (UV–visible). Further, the photocatalytic activity of POMA/ZnO/rGO NC was evaluated and compared by degrading the direct yellow 12 (DY 12), congo red (CR), and malachite green (MG) dyes in aqueous media under UV irradiation. The results indicated that after 110 min, POMA/ZnO/rGO composite degraded the dyes by 92% (DY 12), 86.1% (CR), and 82.1% (MG), respectively. Moreover, kinetic studies of the photocatalyst were also performed along with reusability test, total organic carbon, chemical oxygen demand, and degradation mechanism.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
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2024
·Vol. 35
·期 6
·e6474
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IF 3.1
Yi Li,Ning Zhang,Yanchao Zhu,Min Cheng,Shuang Gao
In this work, surface-modified Ce-Zr oxides and ZnO nanoparticles were conveniently prepared by dopamine (Dpa) treatment and then composited with epoxy (EP) by hot pressing. Thermogravimetric analysis (TGA) and UV-shielding properties of the EP composites with surface modification with Dpa-CZ and Dpa-ZnO were measured. The TGA results showed that the modified treated fillers had no loss of heat resistance of the matrix and had an enhancement effect on the initial and maximum decomposition temperatures. In addition, the UV-shielding properties of EP composites after Dpa-CZ and Dpa-ZnO modifications both showed a significant enhancement effect compared to pure EP. The T(UVA) of the 0.5 wt% Dpa-ZnO modified composite decreased to less than 0.017%, and the T(UVB) decreased to less than 0.0059%. The T(UVA) of the 0.5 wt% Dpa-CZ modified composite decreased to less than 15.98%, and the T(UVB) decreased to below 1.14%. The composites have both excellent thermal stability and UV-shielding efficiency.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2024
·Vol. 35
·期 1
·e6274
·
IF 3.1
Jia-Horng Lin,Xiao Han,Xia-Yun Zhang,Xue-Fei Zhang,Yan-Ting Wang,Hao-Kai Peng,Li-Yan Liu,Lu Zhang,Ching-Wen Lou,Bing-Chiuan Shiu,Ting-Ting Li
In order to develop a soft composite with high-performance puncture resistance and self-healing property property, herein, we introduced Pluronic F127 diacrylate (F127DA) into titania-based nanocomposite hydrogels (PAMT) and then compounded hydrogel and aramid fabric to form gel-matrix soft composites (GMSCs). The result shows that, with the addition of 5 wt% TiO 2 nanoparticles, the hydrogels exhibited a fracture strain of 3898%, a toughness of 12.23 MJ/m 3 and a self-healing efficiency of 99.45% after healing at 100°C for 12 h, indicating multiple recycling feature. In addition, a series of mechanical tests had shown that the resultant GMSCs exhibited incredible spike puncture resistance and knife puncture resistance, 17.66 times and 13.78 times greater than that of pure fabrics, and could achieve 33.84% spike puncture self-healing efficiency and 26.62% knife puncture self-healing efficiency. The synergetic reinforcement mechanism of the hydrogel and fabrics was also analyzed. This study provides a valuable reference for designing a puncture resistant soft composite with rapid self-healing and repeated recycling.
研究领域:
材料科学
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力学工程
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DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2025
·Vol. 36
·期 4
·e70085
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IF 3.4
Ziyun Li,Qiwei Zheng,Menghan Zhong,Chao Wang,Shengwei Fang,Renfeng Zhou,Min Xia,Yanrong Jia,Juan Zhang,Peng Ye
Internal emulsification emulsions are environmentally friendly and do not emit volatile organic compounds (VOCs). However, their micelle interface, dominated by ionic hydrophilic groups, hinders cross-linking reactions and affects performance. We proposed a dual-functional micellar interface (DFMI) that distributes both ionic and reactive hydrophilic groups, enhancing cross-linking performance without significantly compromising emulsification properties. In this study, a series of sugar-based hyperbranched waterborne polyurethane emulsions were synthesized with 2,2-dimethylolpropionic acid (DMPA) as the ionic hydrophilic moiety. Dopamine (DA) was introduced at varying levels as the reactive hydrophilic moiety for terminal modification. The results showed that monomolecular micelles and vesicular micelles could be formed by symmetric and asymmetric modification of terminal DA. Symmetric modification tended to form unimolecular micelles, while asymmetric modification tended to form vesicular structures. Adhesion tests conducted after cross-linking with gelatin showed that the asymmetrically modified adhesives with seven-layer structured DA exhibited better cross-linking degrees. Adhesion performance and swelling tests confirmed that the asymmetric structure exposed more terminal reactive groups, enhancing the utilization of the modified groups, as indicated by dynamic light scattering (DLS) for emulsion particle size and surface zeta potential. This study successfully prepared hyperbranched polyurethane emulsions with tunable micelle morphology, balancing emulsification ability, and cross-linking degree, supporting the controlled emulsification of hyperbranched polymers and the development of bio-based adhesives.
研究领域:
材料科学
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环境科学
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生物化学
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DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2024
·Vol. 35
·期 4
·e6357
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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.
研究领域:
材料科学
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高分子化学
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DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2024
·Vol. 35
·期 4
·e6363
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IF 3.1
Ke Xu,Shengxin Guan,Jianguang Xu,Lin Xia,Zhaoge Huang
The aim of this study is to broaden the potential applications of polyphenylene sulfide (PPS) by incorporating graphene oxide (GO)-grafted glass fiber (GF) to enhance the mechanical properties of liquid crystal polymer (LCP)/PPS composites. The surface of GF was modified using γ-Aminopropyltriethoxysilane (KH550), allowing for the grafting of GO. Subsequently, GO-GF/LCP/PPS composites were prepared through extrusion injection molding. The properties of the composites were evaluated using scanning electron microscopy, differential scanning calorimetry, and thermogravimetric analysis. The findings indicate that the interfacial adhesion between GF and composites is significantly improved with the addition of GO, The mass fractions of GO used were 0.1%, 0.5%, and 0.7%. The incorporation of GO-grafted GF proves to be an effective approach in enhancing the tensile and flexural strengths of LCP/PPS composites. Additionally, a reduction in wear volume and tribological coefficient is observed compared to composites without GO-treated GF. Notably, when the GO content is 0.5 wt%, the mechanical properties of the composites show significant improvement, with a 50% increase in impact strength compared to the composite without GO, and a decrease in friction coefficient from 0.28 to 0.22.
研究领域:
材料科学
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复合材料工程
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DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2025
·Vol. 36
·期 3
·e70127
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IF 3.4
Jingyu Lin,Lingzhi Nie,Wei Yin,Pengtu Zhang,Peiyuan Zuo,Puke Mi,Qixin Zhuang
The emerging electronic devices demand dielectric polymer films with high energy storage density over a wide temperature range. However, the mobility of charge carriers leads to unsatisfactory dielectric performance even for heat-resistant dielectric polymers such as polyetherimide (PEI). Therefore, to enhance the energy storage density of polymer dielectrics, it is critical to concurrently focus on increasing the dielectric constant and improving the breakdown strength by hindering the migration of electrons, which is highly correlated with the intrinsic bandgap structures of dielectrics. Inspired by the tunable bandgap structure of doped semiconductors, this work is aimed at strengthening the trapping of charge carriers depending on the construction of electron traps and the formation of electron–hole pairs, that is, to tailor the bandgap of ZnS 1−x O x via oxygen doping and the band structure at the ZnS 1−x O x /PEI interface region, thereby significantly enhancing the breakdown strength of the composite films. At room temperature and 450 kV mm −1 , the energy density ( U d ) of 0.4 vol% ZnS 0.7 O 0.3 /PEI reaches 5.7 J cm −3 with a charge–discharge efficiency ( η ) of 96.6%, which is 2.3 times that of pure PEI (2.5 J cm −3 , η = 86.2%). Moreover, the composite film exhibits excellent dielectric stability at high temperatures. At 150°C and 350 kV mm −1 , the U d remains 3.4 J cm −3 , with a high η of 89.1%, significantly higher than that of pure PEI (1.5 J cm −3 , η = 80.6%). This work provides a novel perspective for the design of high-performance dielectric composite films via interfacial engineering.
研究领域:
材料科学
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电子工程
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DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2024
·Vol. 35
·期 12
·e70013
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IF 3.1
Zenghui Tan,Xuehui Tan,Yajun Xu,Wei Wei,Xiaojie Li,Jingcheng Liu
In this work, polyurethane acrylate (PUA) was successfully synthesized using polypropylene carbonate diol (PPC2000), isophorone diisocyanate (IPDI), and hydroxyethyl acrylate (HEA) as raw materials. Then, a series of UV-curable elastic soft-feel coatings based on different photo-initiators were successfully prepared. The double-bond conversion rate, thermal stability, storage modulus, roughness, contact angle, and other properties of the coatings were tested. The results indicated that the UV-curable elastic soft-feel coatings achieved a high double-bond conversion rate and demonstrated good adhesion, chemical resistance, wear resistance, and thermal stability. Moreover, it was found that the coatings with low storage modulus, low roughness, and low surface energy displayed excellent tactile feel.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2024
·Vol. 35
·期 12
·e70018
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IF 3.1
Xiaowen Wang,Jun Yan,Yan Yu,Haoyan Qiu,Xuanchuan Li,Paul Joseph,Meiling Zhong,Xinyue Hu,Ri-Chao Zhang
Generally, polymeric materials with superior damping characteristics are in great demand for many advanced functional applications, such as in building, aerospace, electronics, and transport sectors. However, it still remains a challenge to improve the damping characteristics of such materials owing to the lack of adequate practical knowledge in this area. Here, we report on the successful fabrication of silicon rubber (SR)/ferric oxide (Fe 3 O 4 ) composites with excellent damping characteristics. The results obtained from the study showed that the damping characteristics of the specimens increased with the loading of Fe 3 O 4 within a range of −105°C to 200°C. Specifically, the damping factor (tan δ ) is 0.45 at room temperature, and the effective working temperature, the temperatures that correspond to the tan δ > 0.3, ranged from −105°C to 165°C for the loading of Fe 3 O 4 at 60 phr. The scanning electron microscopy results showed that the excellent damping characteristics of composites can be attributed to the good dispersion of Fe 3 O 4 in the SR matrix. This work, therefore, opens up a pathway toward a relatively easy and up-scalable means for fabricating polymer composites that have superior damping characteristics and ones with a wider applicability.
研究领域:
材料科学
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复合材料
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产品关联
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2024
·Vol. 35
·期 6
·e6424
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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.
研究领域:
生物医学工程
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材料科学
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产品关联
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2025
·Vol. 36
·期 2
·e70106
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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.
研究领域:
材料科学
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热管理技术
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DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2024
·Vol. 35
·期 12
·e6591
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IF 3.1
Chuanbo Cong,Mingyang Yuan,Han Wang,Rehan Umer,Daigang Peng,Jianglin Ouyang
In order to improve the thermal stability of silicone rubber (SR), cerium-tin composite oxides (CeSnO-x) are used as thermo-oxidative stabilizer in phenyl methyl vinyl silicone rubber (PVMQ). CeSnO-x are synthesized via the sol–gel method and characterized by scanning electron microscopy, x-ray diffraction, and X-ray photoelectron spectroscopy (XPS) showing that tin doping led to more oxygen vacancies in CeSnO-x compared to CeO 2 . Through thermogravimetric analyzer, differential scanning alorimetry (DSC) and average activation energy calculation of PVMQ with different thermo-oxidative stabilizer, it was found that CeSnO-8 is outperforming CeO 2 , SnO 2 , and their mixtures in improving the thermo-oxidative stability of PVMQ. In mechanical property tests, due to tin doping, CeSnO-8 exhibit superior performance at all stages during thermo-oxidative aging comparing the different effects of CeO 2 and SnO 2 in different aging stages. XPS of PVMQ composites investigate the mechanism by which CeSnO-8 exhibit different effects. Fourier transform infrared spectroscopy characterizing the Si-C and Si-O bond changes in PVMQ composite before and after aging and the measurement of Mc explore thermo-oxidative stabilizers' role during thermo-oxidative aging of PVMQ. Thermogravimetry-infrared spectroscopy comparisons between unstabilized PVMQ and CeSnO-8-stabilized PVMQ show that CeSnO-8 effectively quenched radicals produced by the oxidation of the PVMQ side group, but exacerbate degradation caused by molecular chain rearrangement.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）