SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2026
·
IF 4.8
Jiansheng Chen,Jiaojiao Sun,Zhiqiang Zhang,Yubing Tian,Xianli Tian,Ce Wang,Xiaodong Wu,Peng Wang,Jing Gao
Blood species identification is crucial for forensic investigations. Surface-enhanced Raman scattering (SERS) offers promising advantages including rapid detection, non-destructive analysis, and high sensitivity, but faces challenges from direct metal-biomolecule interactions that can cause spectral interference and sample degradation. Here, we present a novel approach using graphene/Ag/Styrene Ethylene Butylene Styrene (SEBS) flexible SERS substrates for rapid and non-destructive blood species determination. The innovative “sandwich” structure features single-layer graphene (0.34 nm) positioned between silver nanoparticles and blood samples, effectively preventing direct metal-blood contact while maintaining the superior SERS enhancement. The flexible substrate demonstrates good performance including high detection sensitivity (the detection sensitivity of 4-Mercaptobenzoic Acid (4-MBA) is 10 −12 M), excellent storage stability (>30 days), and remarkable mechanical durability (>100 folding cycles). We collected 682 SERS spectra from five animal species and employed a convolutional neural network algorithm for classification, achieving the classification performance with 98.54% accuracy, 98.29% precision, and 98.38% recall. The flexible substrate enables rapid analysis and maintains the spectral integrity of archived samples for up to 31 days. This flexible graphene /Ag/SEBS platform has reliable capabilities and offers accurate new means for on-site forensic applications: non-destructive analysis, field portability, rapid results, and high accuracy.
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DOI
PubMed
高影响因子
POLYMER
·
2024
·
IF 4.1
Yi Liu,Bo Wu,Ying Dan Liu,Yongri Liang
The poly(styrene-b-ethylene-co-butylene-b-styrene) (SEBS) gel which a type of electroactive thermoplastic elastomer has significant intrinsic electromechanical coupling effect owing to its unique microphase separated structure. However, the relationship between the structure and electromechanical properties of SEBS gel remains incompletely understood. This study investigates the effects of polar groups and nanostructure parameters on the bending electromechanical property of SEBS gel for improving its bending electromechanical properties, using maleic anhydride-grafted SEBS/white oil (WO) gel (SEBS-M gel) and blends of SEBS-M gel with acrylonitrile-styrene copolymer (SAN). The SEBS-M gel/SAN films exhibited a hexagonally packed cylinder (HEX) morphology, and the radius of polystyrene domains (r PS ) as well as the thickness of poly(ethylene-co-butylene) (PEB) domains (d PEB ) in the SEBS-M gel/SAN slightly decreased with increasing SAN content up to 15 phr, followed by an increase. The bending displacement and actuation stress of SEBS-M gel/SAN increased with increasing SAN content up to 15 phr. The bending displacement of SEBS-M gel at 1.4 kV is approximately 74 % of that of SEBS gel, while the bending displacement of SEBS-M gel/SAN-15 at 1.4 kV is approximately 195 % and 266 % higher than that of SEBS gel and SEBS-M gel when the SAN content reaches 15 phr, respectively. The grafted maleic anhydride has a counteractive effect on the bending electromechanical properties of SEBS gel, while blending with a certain amount of SAN in SEBS-M gel has a synergistic effect on the bending electromechanical properties of SEBS gel. It is demonstrated that the enchantment of bending electromechanical properties of SEBS gel is achieved not only by adjusting the parameters of its microphase-separated structure but also by inducing segment deformation through electric field-induced dipole orientations.
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Guozong Yue,Zhanxiong Li,Yakun Guo,Deshun Huang,Maobing Shuai,Qingsong Huang
The incorporation of DEB-Pd/C into polymers provides a possible solution to obtain various composite materials with customized properties. In this work, we selected SEBS as a substrate to prepare an ultra-thin flexible DEB-Pd/C@SEBS composite film . The mechanical properties and hydrogen uptake properties of composite films with different DEB-Pd/C contents and different thicknesses were investigated. The results show that these films possess excellent H 2 uptake and mechanical properties. We speculate that the microphase separation structure of these films results in high gas permeability and diffusion rate, which make the material have good compatibility. In addition, these films can be cut and bent into any shape, which can be applied to hetero-slit space easily and conveniently.
研究领域:
材料科学
·
化学工程
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Feijing Xu,Zhaojian Ding,Shanjun Gao,Chunhui Shen
In this study, an intumescent flame retardant exhibiting a synergistic effect was synthesized through the combination of ammonium polyphosphate (APP) and a triazine-based char-forming agent (CFA). Polypropylene (PP), hydrogenated styrene-butadiene block copolymer (SEBS), ammonium polyphosphate (APP), triazine carbonating agent (CFA), azodicarbonamide (ADC) and SiO 2 nanoparticles were used as raw materials for the hot pressing of flame-retardant-modified PP/SEBS foams. The synergistic interaction between APP and CFA not only significantly improves the flame retardant properties of PP/SEBS foamed materials but also ensures the formation of an excellent cellular structure. Experimental findings indicate that when the mass ratio of APP:CFA is 3:1 and the total loading of APP/CFA is 25 wt%, the material achieves a V-0 rating in the UL-94 vertical burning test, with a limiting oxygen index (LOI) value of 30.6%. In the CTT, the PHRR and THR of APP/CFA (3:1) modified foam were 87.0% and 62.5% lower than those of pure PP/SEBS foam. The tensile strength of the material was 15.2 MPa, and the flexural strength was 23.9 MPa. The bubble diameter of the flame-retardant modified PP/SEBS foams was 72.36 μm, and the density of the bubble was 2.24 × 10 6 /cm 3 , providing a good case for the study of flame-retardant modified PP foams.
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高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2024
·
IF 8.1
Xiaoyan Li,Jixiang Zhu,Wei Peng,Chunfa Ye,Tianyu Cang,Ming Li,Longqi Zhao,Deng-Guang Yu
In this paper, core-sheath fibers with poly(styrene-ethylene/butylene-styrene) triblock copolymer (SEBS) as the core layer and polyvinylpyrrolidone (PVP) of different molecular weights as the sheath layer were prepared by coaxial electrospinning. Amphiphilic triblock copolymers were added to the SEBS core layer, and the fusion of incompatible SEBS-PVP at the core-sheath interface was further promoted by appropriate solvent post-treatment. Polydopamine (PDA) was in situ polymerized on the surface of SEBS-PVP fibers, so that silver nanowires (AgNWs) with high aspect ratios were conformally self-assembled along the fibers to form good interfacial bonding, so that the SEBS-PVP/AgNW composite membrane has high conductivity and exhibits good interfacial transfer effect in cyclic stretching under large strain. Based on core-sheath nanofibers and self-assembly, the excellent interfacial transfer gives SEBS-PVP/AgNW low viscoelastic loss, integrated large tensile strain sensing and stable Joule heating effect, which is conducive to the development and application of multifunctional stretchable electronics.
研究领域:
材料科学
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纳米技术
·
柔性电子
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DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2021
·
IF 3.975
Danian Liu,Jingwen Wang,Wenhai Peng,Xinzhu Wang,Hua Ren,Donald W. Kirk
Due to their high density, dielectric ceramics are no longer appropriate for the areas with a light weight demand such as aeronautics, astronautics and wearable devices . In order to meet the ever-increasing demand for lightweight and flexibility dielectric composites, an organic semiconductor material linear polyethylene glycol-polyaniline multi-alternating block (more than triblock) copolymer (with low density) was designed based on the Williamson ether synthesis . FT-IR, 1 HNMR, XRD , DSC and TG results confirmed the success of the synthesis. Its SEBS-based dielectric composites behavior was studied. The results indicated that the copolymer not only possessed a lighter density (~0.9 g/cm 3 ) compared with ceramics (~6–8 g/cm 3 ), but also exhibited better dielectric performances as a dielectric filler. The dielectric constant was 14.52 at a content of 11.5 vol% and the breakdown strength was 33.12 KV·mm −1 , compared to ceramic BaTiO 3 composite having 9.03 and 20.09 KV·mm −1
研究领域:
材料科学
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有机化学
·
电子材料
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Fanghui Wang,Zhaonan Sun,Hanfei Zhang,Hong Zhu
A series of SEBS-C6-PIP-yPTP (y = 0–15%) AEMs with good mechanical and chemical stability were prepared by combining the strong rigidity of p-triphenyl, good toughness of SEBS, and excellent stability of PIP cations. After the introduction of a p-triphenyl polymer into the main chain, a clear hydrophilic–hydrophobic phase separation structure was constructed within the membrane, forming a continuous and interconnected ion transport channel to improve ion transport efficiency. Moreover, the molecular chains of the cross-linked AEMs change from chain-like to network-like, and the tighter binding between each molecule increases the tensile strength. The special structure of the six-membered ring makes PIP have a significant constraint effect; when nucleophilic substitution and Hoffman elimination occur at the α and β positions, the required transition state potential energy increases, making the reaction difficult to occur and improving the alkaline stability of the polymer membrane. The SEBS-C6-PIP-15%PTP membrane has the best mechanical properties (Ts = 38.79 MPa, Eb = 183.09% at 80 °C, 100% RH), the highest ion conductivity (102.02 mS. cm–1 at 80 °C), and the best alkaline stability (6.23% degradation at 80 °C in a 2 M NaOH solution for 1400 h). It can be seen that organic–organic covalent cross-linking is an effective means to improve the comprehensive performance of AEMs.
研究领域:
材料科学
·
化学工程
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DOI
PubMed
高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 34
·e74446
·
IF 2.3
Fanghui Wang,XueMin Shi,Shi Huang,Dan Wu,Hong Zhu
Using styrene-ethylene-butylene-styrene (SEBS) with a high polystyrene (PS) block ratio as the backbone, a series of highly functionalized side-chain grafted anion exchange membranes (AEMs) were prepared via Blanc chloromethylation and functionalization with a dual-cation group( N , N , N ', N '-tetramethyl-1,2-dimethyl-1,3-propanediamine (DPPA)). Structural simulations of the polymers were conducted using MM2 molecular dynamics. Results demonstrate that the SEBS-DPPA membrane with 100% grafting rate exhibits ultrahigh ionic conductivity, reaching 282.85 mS cm − 1 at 80°C. Molecular simulations reveal continuous high-density ion transport channels formed by quaternized nitrogen atoms within the membrane. The membrane shows ultrahigh ionic conductivity but poor alkali resistance. After immersion in 2 mol L − 1 NaOH solution at 80°C for 1000 h, the ionic conductivity retains only 56.74% of its initial value. Although the ion conductivity decreased by 43.26% after 1000 h of alkali resistance testing, it remained above 150 mS cm − 1 , and the mechanical properties did not show a significant decrease. This indicates that SEBS-DPPA membrane has great potential for application in AEMFCs through further modification. Graphical Grafting double cationic DPPA can form coherent and high-density ion transport channels within SEBS membrane. The ion conductivity of 100% SBES-DPPA membrane can reach 282.85 mS cm −1 at 80°C, which is much higher than the commonly used anion exchange membranes.
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DOI
高影响因子
POLYMER
·
2020
·
IF 4.231
Zhanhui Gan,Deyu Kong,Qianqian Yu,Yifan Jia,Xue-Hui Dong,Linge Wang
Research on superhydrophobic surfaces received continued attention due to more and more widely applications of superhydrophobic materials. Two parameters have been recognized for the rational design of the superhydrophobic materials: surface texture and chemical constitution. In this work, we fabricated composite membranes of polystyrene- block -poly (ethylene- co -butylene)- block -polystyrene (SEBS) and fluorinated polyhedral oligomeric silsesquioxane- block -polystyrene (FPOSS-PS) using a sequential electrospinning and electrospraying approach. Composite membranes with hierarchical geometries could be achieved by adjusting the formulation and/or fabrication protocols. Incorporation of fluorinated component enhances the surface property of the composite membranes due to its ultra-low surface energy, while micron particles attached on the surface further promotes the robustness of the membrane and enhanced the cell/tissue anti-adhesion efficiency. With a simple annealing treatment, the physical crosslinking was built up between the micron particles and underlying fibers, rendering the membranes with good stability and anti-adhesion properties. These superhydrophobic membranes are anticipated to have potential applications in wound-dressing and other related areas.
研究领域:
材料科学
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纳米技术
·
高分子科学
·
表面工程
·
生物医学工程
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DOI
高影响因子
JOURNAL OF MATERIALS RESEARCH
·
2021
·Vol. 36
·期 9
·1835-1845
·
IF 3.089
Chen Changsong,Wu Yihua,Zhu Zhi-Gang,Shih Wan Y.,Shih Wei-Heng
Abstract All-inorganic perovskite materials have many advantages such as adjustable emission range, narrow emission peaks, and good crystallinity, which have attracted widespread interest. They can be used as solar cells, LEDs, photodetectors, displays, and other optoelectronic devices. However, poor environmental stability is the major factor limiting its applications. We introduced a Poly(styrene-ethylene-butylene-styrene) SEBS polymer to create perovskite/SEBS composite films which have excellent stability even in the water environment. Besides, due to the elastic nature of SEBS, the composite films exhibited good mechanical deformability and could maintain most of its fluorescence intensity after being stretched hundreds of times. A WLED device was constructed by stacking CsPbBr 3 /SEBS films and CsPbI 3 /SEBS films over a blue LED. The WLED performed well with color rendering index of 82.6 with chromaticity coordination (0.35, 0.36) and color temperature 4784 K. Graphic Abstract
In order to create a stable and flexible photoluminescent material, we combined a
poly(styrene-ethylene-butylene-styrene) (SEBS) polymer and cesium lead-halide
nanocrystals forming a flexible photoluminescent composite. The composite films
show both good environment stability and excellent flexibility.
研究领域:
材料科学
·
光电技术
·
纳米技术
·
光子学
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DOI
高影响因子
JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
·
2014
·
IF 1.357
Zhirong Xin,Binbin Du,Shunjie Yan,Shanshan Du,Jiaotong Ding,Zongfeng Yang,Wanzhong Ren
Gemini surfactants (GS) with sugar-containing head-groups and different alkyl chains were successfully prepared. Poly(styrene-b-(ethylene-co-butylene)-b-styrene) (SEBS) elastomer was grafted with glycidyl methacrylate (GMA) by means of UV-induced graft polymerization, and then the pGMA-grafted film was chemically immobilized with the GS. The surface graft polymerization was confirmed by ATR-FTIR and XPS. The wettability and hemocompatibility of the modified surface were characterized by means of water contact angle, protein adsorption, and platelet adhesion assays. The results showed that amphiphilic surfactant-containing polymer surfaces presented protein-resistant behavior and anti-platelet adhesion after functionalization with GS, GS1 and GS2. Besides, the hemocompatibility of the modified surface deteriorated as the length of hydrophobic chain of GS increased.
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高影响因子
Nano Materials Science
·
2024
·
IF 12.6
Qigang Li,Jianyun Ding,Youfang Zhang,Weiwei Lei,Zhaoyang Wei,Chao Chen,Dean Shi
Achieving high thermal conductivity in polymer composites with micro or nanoparticle fillers are challenging. Typically, over 50 vol% filler loading is necessary to form a thermal conductive network. However, even with such a network in place, the increase in thermal conductivity may not be significant compared to that in electrically conductive composites. To clarify the ideal filler network structure, we endeavored to selectively disperse nano-sized Al₂O₃ nanoparticles at the interface of co-continuous SEBS/PA6 blends, with and without various filler surface modification methods. A thermal conductive network forms when all interface areas are fully covered by 2.56 vol% of Al 2 O 3 nanoparticles (very close to theoretical loading content 2.29 vol%). In this case, the Al 2 O 3 nanoparticle has the highest thermal conductive contribution (TCC). However, the absolute TCC values are extremely low because of the interfacial thermal resistance and it will decrease when the filler content exceeds 2.56 vol%, indicating that some nanoparticles are dispersed separately out of the existed thermal conductive network. These findings suggest that the construction of a connected thermal conductive network, relatively lower interfacial thermal resistance and the precise positioning of fillers within this network are essential for achieving high thermal conductivity composites.
研究领域:
材料科学
·
高分子科学
·
热工程
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DOI
高影响因子
危险品化学品经营许可证（带存储）