IONICS
·
2018
·Vol. 25
·期 6
·2595-2605
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IF 2.347
Zhang Min,Ma Xiaoyan,Liu Yi,Ma Jingyu,Chen Fang,Zhang Qi
Polyhedral oligomeric silsesquioxane-poly(methyl methacrylate) 8 (POSS-PMMA 8 )/polyvinylidene fluoride (PVDF) hybrid gel polymer electrolyte (HGPE) membranes have been fabricated by using electrospinning along with the use of commercial polypropylene (PP) microporous membranes as its support; the corresponding HGPEs were obtained after being activated into liquid electrolytes. The goal of the study is to incorporate the high mechanical property of microporous PP membrane and superior electrochemical performance of electrospun gel polymer electrolyte to get the high-performance electrolyte for Li-ion battery. As an effective modifier, it is found that the introduction of POSS-polymer plays a vital role in enhancing many properties of HGPEs, and the influence of POSS-(PMMA 46 ) 8 content on overall properties of HGPEs is investigated. In specific, the HGPEs membrane with 12 wt% POSS-(PMMA 46 ) 8 displays a significant uniform fiber diameter with 720 nm and high electrolyte uptake of 322% due to the high porosity of 58%. Meanwhile, a great improvement in mechanical property is obtained with a tensile strength of 34.5 MPa, which is about 7 times of POSS-(PMMA 46 ) 8 /PVDF membrane without support. The interfacial resistance between the corresponding HGPEs and Li electrodes is significantly reduced and as low as 138 Ω. Furthermore, the LiFePO 4 /HGPEs/Li button cell is assembled and excellent cyclability is shown at 0.1 C and 0.5 C, respectively. The results demonstrate that POSS-(PMMA 46 ) 8 /PVDF HGPEs could be applied as a promising HGPE candidate for high-performance Li-ion batteries.
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DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 68
·55048-55058
·
IF 3.84
Aizhao Pan,Shao Yang,Ling He
Polyhedral oligomeric silsesquioxane (POSS) tethered fluorinated diblock copolymers including linear-shaped ap-POSS–PMMA-b-PDFHM and star-shaped s-POSS–(PMMA-b-PDFHM)16 are synthesized by octakis(dibromoethyl)POSS (POSS-(Br)16) and aminopropylisobutyl POSS (ap-POSS) initiating methylmethacrylate (MMA) and dodecafluoroheptylmethacrylate (DFHM). In THF solution, both diblock copolymers could self-assemble into 200 nm core/shell micelles with a POSS/PDFHM core and 70–80 nm PMMA shell. These micelles are able to produce typical films with a fluorine-rich top-surface and POSS-gathered sub-surface. Although PDFHM segments and POSS cages are competitively migrating onto the film surface, the migration of the PDFHM segments is actually improved by the POSS cages. Comparatively, the surface of the ap-POSS–PMMA-b-PDFHM film is much more rough and fluorine-rich than the s-POSS–(PMMA-b-PDFHM)16 film, therefore, the ap-POSS–PMMA-b-PDFHM film has higher viscoelasticity and higher oleophobicity, but a little lower hydrophobicity than the s-POSS–(PMMA-b-PDFHM)16 film. The hydrophobic application of both linear- and star-shaped topologies to glass, cotton fabric and stone substrates reveals that the treated samples exhibit superhydrophobicity for the cotton fabric (>150°) and obvious hydrophobicity for the stone and glass (>135°) in terms of resistance to water and other liquids like coffee, milk, coke and green tea. It is believed that the properties of self-assembled films and the hydrophobic applications are related closely to the topologies of block copolymers.
研究领域:
高分子化学
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材料科学
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表面科学
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纳米技术
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功能材料
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高影响因子
Biomedical Signal Processing and Control
·
2026
·
IF 5.7
Xiongbang Yang,Ivan S. Babichuk,Wolin Liang,Yan Pu,Weihuan Lin,Cheng Xu,Hongqiang Li,Jian Yang
Advancements in wearable technology and human–computer interaction have led to the development of flexible sensors capable of recognizing subtle human motions, such as finger movements. Among various sensor types, piezoelectric materials exhibit unique properties that respond to mechanical stress with an electrical output, making them suitable for motion detection applications. This work explores an innovative approach using a flexible piezoelectric sensor fabricated from polyhedral oligomeric silsesquioxanes (POSS)-doped poly(L-lactic acid) (PLLA) to measure and recognize human finger motions indirectly. The sensor developed based on this film, encapsulated with an innovative photocurable elastomer film, exhibits high sensitivity (65.61 mV∙kPa −1 ), rapid response (0.033 s), and stable output, enabling the precise detection of weak physiological signals, such as radial artery pulses, compared to conventional sensors. Additionally, the sensor, combined with fast continuous wavelet transformation and a Swin Transformer classifier, achieves 97.96% accuracy in recognizing nine categories of finger motions. The combination of flexibility, biocompatibility and enhanced piezoelectric properties positions this sensor as a promising tool for developing advanced human–computer interfaces.
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高影响因子
Polymer Chemistry
·
2018
·Vol. 9
·期 16
·2101-2108
·
IF 4.927
Jianqiu Jin,Mingjie Tang,Zhenghe Zhang,Kang Zhou,Yun Gao,Zhi-Gang Zheng,Weian Zhang
A series of POSS-functionalized liquid crystalline block copolymers (LC BCPs), PHEMAPOSS-b-P6CBMA, containing a crystalline polyhedral oligomeric silsesquioxane (POSS) block and a mesogenic cyanobiphenyl block, were prepared via reversible addition–fragmentation transfer (RAFT) polymerization for the first time and utilized to stabilize blue phase (BP) liquid crystals through facile doping. Using the advantages of both the POSS and polymer, a new strategy, which is distinct from the commonly adopted strategy for polymer stabilization of the BP, has been established. This new BP system with a wide BP range covering the typical room temperature range (i.e. 25–30 °C) leaps over intricate processing barriers, which are inevitable in conventional photo-induced polymer stabilization. In particular, improved electro-optical (E-O) properties of the BP, including lower driving voltage, lower hysteresis and a higher Kerr constant (K) compared with the common BP stabilized via photopolymerization, were obtained by optimizing the concentration of the doped LC BCP. Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) were employed to evaluate the thermal properties of the LC BCPs, and the results indicated that the introduction of POSS enhanced the thermostabilities of the copolymers effectively. Such an ingenious strategy provides a brilliant and easy way to form large size BP displays and other devices that are incompatible with UV light exposure during the working process.
研究领域:
高分子化学
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材料科学
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软凝聚态物理
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功能材料
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显示技术
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2019
·Vol. 137
·期 12
·48486
·
IF 2.188
Xiaojing Zhang,Weiwei Shen,Jingcheng Dou,Yang Meng,Shaoming Fang,Ruixue Liu
In this study, water-soluble octa(3-chloroammoniumpropyl) silsesquioxane (OCAPS) was found to aggregate into nanoparticles with a positive charge in solution, which can attract persulfate anion radical to initiate N-isopropylacrylamide monomers. Due to the electrostatic and hydrogen bond interaction between OCAPS and poly(N-isopropylacrylamide) (PNIPAM) chain, OCAPS can act as an effective physical crosslinker to result in a nanocomposite hydrogel (OCAPS-PNIPAM) with very small loading N, N′-methylene-bisacrylamide (50–100 ppm). The incorporation of OCAPS increases the crosslinking degree of the PNIPAM hydrogel and decreases the swelling ratio in deionized water. The mechanical properties of OCAPS-PNIPAM hydrogel were enhanced greatly by the presence of OCAPS and can be adjusted by the feed ratio. The compression and elasticity moduli vary from 3.52 to 7.59 kPa and 7.67 to 33.91 kPa, respectively. The tensile strength ranges from 6.82 to 243.41 kPa with fracture energy between 503.5 and 4781.7 J·m −2 . Rheological measurements suggest that OCAPS-PNIPAM hydrogels have stable networks and the loss factor decreases as increasing OCAPS content. OCAPS-PNIPAM hydrogels also can self-heal under certain conditions with low crosslinker loading. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137 , 48486.
研究领域:
材料科学
·
高分子化学
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高影响因子
ANALYTICAL CHEMISTRY
·
2019
·
IF 6.35
Yue Zhang,Junxia Hao,Xiaojian Xu,Xuwei Chen,Jianhua Wang
Metallothioneins (MTs) are important biomarkers for the early diagnosis of heavy metal poisoning and malignancies. Convenient and cost-effective approaches for the rapid detection of MTs are therefore highly desirable for clinical monitoring. Herein, by taking advantage of the enzyme-mimetic activity of nanoparticles and protein corona-based recognition, insufficient polyhedral oligomeric silsesquioxane (POSS) polymer-caged gold nanoparticles (denoted as PP–AuNPs) are developed for the sensitive colorimetric analysis of MTs. In the presence of MTs, the catalytic reduction of yellow 4-nitrophenol to colorless 4-aminophenol is inhibited due to masking of the exposed PP–AuNPs catalytic surface with MTs corona. MTs are quantified by the presented color contrast with a superior sensitivity up to a 1.5 nM detection limit. Most importantly, the heavy metal ion- and aptamer-free PP–AuNPs platform exhibits excellent selectivity toward MTs over various ions, neutral biomolecules, and protein species, and successful applications are demonstrated by the detection of MTs in complex biological samples.
研究领域:
分析化学
·
生物标志物检测
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纳米技术
·
临床诊断
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产品关联
DOI
PubMed
高影响因子
EUROPEAN POLYMER JOURNAL
·
2023
·
IF 6
Fangfang Zhang,Peng Cui,Dongni Liu,Zhuo Han,Jie Zhu,Yan Huang,Yanhong Chao,Yuanbin She,Wenshuai Zhu,Zhichang Liu
Fluid catalytic cracking (FCC) diesel provides most polycyclic aromatic hydrocarbons (PAHs) in diesel. The removal of PAHs by adsorption and separation method is an efficient way to obtained purified diesel. As a kind of green economy adsorbent, porous carbon materials (PCMs) have been widely used in the adsorption of gases, aromatics and organic pollutions. Here, by direct carbonization, the PCMs are prepared from the novel Ph-POSS based porous organic polymers (POPs) which possessed high BET surface areas (∼1000 m 2 /g). The PCMs possess abundant microporosity and O atoms in the skeleton. The PCMs exhibit high PAHs adsorption capacity because of the hierarchical micropore size, high degree of graphitization and abundant O atoms. The strategy of construction PCMs with hierarchical micropore and heteroatoms provides an effective method to remove PAHs in the FCC diesel.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2016
·Vol. 134
·期 7
·
IF 1.866
Hua Mei,Ran Wang,Wentan Ren,Yong Zhang
A novel organic–inorganic hybrid of epoxycyclohexyl polyhedral oligomeric silsesquioxane (e-POSS)–grafted carboxylic methoxypolyethylene glycols (mPEG-COOH), that is, a POSS-mPEG graftomer, was synthesized. The grafting reaction of e-POSS and mPEG-COOH was characterized by Fourier transform infrared (FTIR) and 1 H-NMR spectroscopy. Then the graftomer was used to develop new composite solid polymer electrolyte (SPE) films with a carboxylated nitrile rubber–epoxidized natural rubber (XNBR-ENR) self-crosslinked blend system as a dual-phase polymer matrix. The self-crosslinked reaction of the XNBR-ENR matrix was investigated using ATR-FTIR. The morphology of the SPE films and the distribution of lithium salt were investigated using field emission scanning electron microscopy and X-ray diffraction, and the result illustrated that the addition of POSS-mPEG could promote and accelerate the dissociation of LiClO 4 . The best effect within the range of this study was achieved when 25 phr POSS-mPEG was involved. The differential scanning calorimetry analysis proved that the glass-transition temperature of the composite SPE films was reduced with the increase of POSS-mPEG. The ionic conductivity of the composite SPE films was investigated by electrochemical impedance spectroscopy. The highest ionic conductivity in this study of 2.57 × 10 −5 S cm −1 was obtained with 25 phr POSS-mPEG loading. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44460.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2018
·
IF 4.514
Gaowei Yuan,Bing Yang,Yinghong Chen,Yinggang Jia
Through reaction of the active functional groups on framework of Graphene oxide (GO) with 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and cage octaminopropyl silsesquioxane (oapPOSS), a novel multi-structure synergistic graphene-based ternary graft flame retardant oapPOSS-graft-GO-graft-DOPO (P G D) was designed and synthesized successfully. The obtained P G D was then applied in PP flame retardation. Compared with pure PP, the peak heat release rate and total heat release of PP composite are reduced by 78.0% and 44.9% via adding 25 wt% P G D. These notable reductions in fire hazards are mainly due to the synergistic effects of graphene/nitrogen/phosphorus/silicon multi-structures: the graphene sheets enhance the barrier property of carbon layers to prevent heat and volatile transfer; the phosphorus-containing groups as catalyst accelerate and promote the char formation in condensed phase; the Si O Si structures improve the thermal oxidative stability; the nitrogen elements in P G D produce the inert gases at high temperature and play a major role in the gaseous phase.
研究领域:
材料科学
·
高分子化学
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DOI
高影响因子
Journal of the Mechanical Behavior of Biomedical Materials
·
2026
·
IF 4.1
Hao Sun,Yanxin Bu,Wenxin Cao,Yucui Hu,Xinrui Guo,Xiaohui Yang,Qiwei Li,Jiayi Song,Mengmeng Sun,Yumei Niu,Lina He,Xiangyu Sun
This study developed a dental composite resin incorporating KH-570-modified magnesium oxide nanoparticles (MgONPs) and methacryloxypropyl polyhedral oligomeric silsesquioxane (MAP-POSS), and evaluated its microstructure, physicochemical properties, antibacterial activity, and in vitro cytocompatibility. MgONPs were surface-modified with 3-(methacryloyloxy)propyltrimethoxysilane (KH-570), and composite resin specimens containing 2 wt% modified MgONPs with gradient additions of MAP-POSS were prepared, using a commercial composite resin as the control. Filler structure and modification were characterized by XRD and FTIR, and the composite resins were analyzed by SEM and FTIR. Depth of cure, Vickers hardness, water sorption, solubility, compressive strength, and flexural strength were measured. Antibacterial activity was evaluated against planktonic Streptococcus mutans ( S. mutans ) using the film contact method, and cytotoxicity was assessed using the CCK-8 assay with L-929 fibroblasts. Among the tested formulations, the specimen containing 4 wt% MAP-POSS and 2 wt% modified MgONPs exhibited the densest microstructure, the highest degree of conversion (83.03%), the greatest depth of cure and mechanical properties, a moderate reduction in viable planktonic S. mutans (R = 1.16), and no obvious cytotoxic response under the tested conditions. These results indicate that the combination of MAP-POSS and silane-modified MgONPs may be a feasible strategy for achieving balanced mechanical reinforcement and antibacterial functionality in dental composite resins.
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高影响因子
Materials Today Chemistry
·
2025
·
IF 6.7
Junmeng Zhai,Zongwu Zhang,Yijie Zhou,Hanbin Zhang,Jian Jiao,Xiaoyan Ma
Aerogels with lightweight, high-temperature resistance, and low thermal conductivity are emerged as a research hotspot in advanced materials. However, their commonly employ drying techniques such as supercritical CO 2 drying and freeze-drying, which significantly increase production costs. This work developed a novel strategy for rapid preparation of aerogel composites via ambient pressure drying by employing autonomous synthesis three types of vinyl-functionalized open-cage polyhedral oligomeric silsesquioxane(POSS) to modify bismaleimide (BMI). The incorporation of heat-resistant POSS contributes to enhanced porosity and maintained excellent thermal stability to ensure excellent thermal insulation performance and low dielectric properties. The results demonstrate that the tetravinyl open-cage POSS (OP 2 -POSS) can endow the aerogel with ultralow dielectric constant and dielectric loss of 1.29 and 3.94 × 10 −4 at 1 kHz, respectively, remarkable thermal stability with char yield exceeding 50 % at 800 °C under nitrogen, and low thermal conductivity possessing 0.021 W m −1 k −1 . This aerogel holds great promise for applications in high-frequency communication and aerospace fields.
研究领域:
材料科学
·
高分子化学
·
隔热材料
·
介电材料
·
航空航天工程
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产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2025
·
IF 14.2
Chenxiang Gao,Xiangpan Hu,Yun Huang,Xiaoyan Ma
All-solid-state lithium batteries (ASSLBs) are in the spotlight due to their superior safety and enhanced energy density. However, the inferior interface compatibility of electrolyte/electrodes and room temperature ionic conductivity hinder their practical application. Here, we innovatively utilize POSS-crosslinked high-permittivity vinylene carbonate and ionic liquids in multiscale nanocellulose membranes to in-situ solidify polymer electrolytes, achieving ASSLBs with excellent interface compatibility and ionic conductivity. Specifically, multiscale nanocellulose membranes prepared from cellulose nanocrystals and cellulose nanofibers serve as support separators, which can effectively absorb polymer precursors and facilitate lithium-ion transport through abundant hydroxyl groups and nanostructures, realizing high ionic conductivity of 1.10 × 10 −4 S cm −1 at 30 °C. Moreover, the octa-functionalized POSS further enhances the solid-solid interface by forming a highly crosslinked polymer network through in-situ polymerization with active monomers, thereby strengthening the stability of ASSLBs. The above in-situ solidification strategy ultimately achieves robust electrode/electrolyte interfaces and optimizes the long cycle capability of ASSLBs. Li||Li cells can run stably for more than 1200 h at a current density of 0.2 mA cm −2 without noticeable polarization. Furthermore, Li||LFP cells maintain excellent stability after 800 cycles at 1C with a superior capacity retention of 70 % at 55 °C and exhibit excellent rate performance. This work provides an effective strategy to fabricate high-performance ASSLBs and a new solution for the high-value utilization of naturally renewable cellulose resources.
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高影响因子
危险品化学品经营许可证（带存储）