COMPOSITE INTERFACES
·
2025
·
IF 2.4
Zhenyu Zhu,Xinxing Nie,Yuheng Fu,Yibo Zhang,Zhiwei Ye,Hongmei Qin,Chuanxi Xiong,Shixian Zhang
With the increasing demand for refrigeration in modern society, the environmental costs associated with traditional vapor compression refrigeration have become increasingly significant. In this context, polymer elastomers based on the elastocaloric effect have emerged as a promising alternative due to their high energy efficiency, ease of processing, and low cost. However, the elastocaloric response of current polymer elastomers still falls short of practical application levels, and effective methods to enhance the elastocaloric effect are lacking. Here, we investigated the elastocaloric effect of poly(styrene-b-ethylene-co-butylene-b-styrene) (SEBS) based composites from the perspective of conformational changes through in situ testing. We demonstrated that the introduction of SiO2 increases the conformational entropy of the composites in the relaxed state while reducing it in the stretched state, resulting in greater conformational changes during deformation. With the optimal composition, the adiabatic temperature change of the composites reached −16 K, and the isothermal entropy change reached 163.1 J kg−1 K−1, representing a 30% improvement compared to SEBS. This study provides a novel approach for enhancing the elastocaloric effect of polymer elastomers, potentially advancing the commercialization of polymer-based elastocaloric refrigeration.
研究领域:
材料科学
·
能源技术
·
高分子化学
✓ 已验证
DOI
高影响因子
Materials
·
2021
·Vol. 14
·期 8
·1811
·
IF 3.623
Peng Zhang,Xuan Wang,Jiaming Yang,Yongqi Zhang
Blending polypropylene (PP) with thermoplastic elastomer SEBS can effectively improve the mechanical toughness of PP, thus leading to the promise of SEBS/PP as the primary insulation material for high voltage alternating current (HVAC) cables. However, the growth of electrical trees during cable operation limits the application of SEBS/PP. In this paper, acetylation reaction is used to construct acetophenone group at the end of the benzene ring on SEBS so that it has the effect of both a toughening agent and a voltage stabilizer. Then PP was melt blended with acetylated SEBS (Ac-SEBS), and the effects of Ac-SEBS on the mechanical properties, electrical tree resistance, alternating current (AC) breakdown strength, and dielectric spectrum of PP were mainly investigated with reference to PP and SEBS/PP. The results showed that Ac-SEBS with 30% content could enhance the mechanical toughness of PP and improve the electrical tree resistance and AC breakdown strength of SEBS/PP. The AC breakdown field strength of Ac-SEBS/PP reached the highest when the acetylation level was 4.6%, which was 9.2% higher than that of SEBS/PP. At this time, Ac-SEBS was also able to absorb high-energy electrons through the keto-enol interchange isomerization reaction, which inhibited the initiation and growth of electric trees and caused the development of electric dendrites in a jungle-like manner. Moreover, the dielectric loss factor of AC-SEBS/PP in power frequency is within the allowable range of industry. Therefore, Ac-SEBS/PP is expected to be applied to HVAC cables, thus further improving the efficiency of HVAC power transmission.
研究领域:
材料科学
·
电气工程
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2016
·Vol. 134
·期 5
·
IF 1.866
Yijian Wu,Baoqing Shentu,Zhixue Weng
The SEBS/PP thermoplastic vulcanizates (TPVs) were prepared by melt blending. Di- tert -butyl peroxide (DTBP) was used as the curing agent in combination with trimethylopropane trimethacrylate (TMPTMA) and poly(styrene- b -butadiene-bstyrene) (SBS) as the coagents for the curing process. The synergistic effect of TMPTMA and SBS on the structure and properties of TPVs was studied by means of FT-IR, DSC, torque rheometer, and universal testing machine. Both SEBS and PP crosslinked and the network structure formed under the participation of TMPTMA and SBS. Compared with the sole addition of the coagent, simultaneous loading of both TMPTMA and SBS could provide the TPVs with better solvent-resistance and excellent mechanical properties. The crosslinking mechanism of the TPVs was also proposed. The slight lower value of T m for the TPVs indicated the improved miscibility between PP and SEBS due to the crosslinking reaction. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44392.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2019
·
IF 3.621
Ruifeng Zhang,Kai Huang,Ming Zhu,Gang Chen,Zihang Tang,Yangyang Li,Hui Yu,Biwei Qiu,Xiaoyan Li
Conductive PANi nanofibers were synthesized by chemical oxidative polymerization, and their morphology and structure were analyzed. SEBS and SEBS/PANi fiber membranes were prepared by electrospinning method, and the influence of THF/toluene binary solvent on fiber morphology was analyzed. Under the action of a high voltage electrostatic field, PANi migrates to the surface of the Taylor cone. With the rapid evaporation of THF , PANi nanofibers accumulate and electrochemically crosslink, forming a unique SEBS/PANi micro-nano fiber structure. The prepared electrospun SEBS/PANi membrane has a large strain recovery capability, and the thermal stability is remarkably improved as compared with the electrospun SEBS membrane. The electrospun SEBS/PANi membrane has good corrosion resistance to stainless steel, and the corrosion rate is greatly reduced, showing corrosion resistance even under large tensile deformation.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2025
·
IF 5.5
Fanghui Wang,Defang Kong,Hong Zhu
A series of (dipole-) multicationic cross-linked SEBS-based AEMs were prepared using a multicationic cross-linking strategy with SEBS as the polymer skeleton, which has good alkali stability. By controlling the cross-linking degree, the performance of AEM can be regulated. Introducing a multicationic cross-linking agent DACEE-containing hydrophilic alkoxy chains (dipoles) to improve the performance of the AEMs. The difference in hydrophilicity/hydrophobicity of alkoxy chains in DACEE and the dipole interaction between oxygen atoms and cations contribute to the construction of microphase separation, broadening of ion transport channels, and promoting ion transport efficiency. The steric hindrance of cage-shaped cations in cross-linked structures and the hydrophilicity of alkoxy groups in cross-linking agent DACEE can enhance the alkaline stability of AEMs. The additional intermolecular forces generated after cross-linking enhance the mechanical properties of the cross-linked membrane. Among them, the SEBS-C6TMA-DACEE20% membrane with the best mechanical properties (Ts: 15.37 MPa, Eb: 250.83%) had an OH– conductivity of 93.61 mS·cm–1 at 80 °C, and after soaking in 2 M NaOH solution for 1500 h, the OH– conductivity decreased by 16.3%.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2024
·
IF 13
Yuting Xiao,Geng Chen,Bin Shi,Qing Chang,Limin Zhang,Hongjing Wu
The direct application of liquid marbles in electromagnetic wave (EMW) absorption is challenging due to their poor stability, susceptibility to gravitational collapse, and shaping difficulties. To address this issue, a novel strategy is proposed to incorporate liquid marble microstructures (NaCl/nano-SiO 2 ) encapsulated in organic phases (Octadecane) into the rubber-matrix (SEBS) using the ultrasound-assisted emulsion blending method. The resulting NaCl/SiO 2 /Octadecane microstructures anchored to SEBS offer a substantial solid–liquid interface consisting of NaCl solution and SiO 2 . When subjected to an alternating electromagnetic (EM) field, the water molecules and polysorbate within SiO 2 exhibit heightened responsiveness to the EM field, and the movement of Na + and Cl − within these microstructures leads to their accumulation at the solid–liquid interface, creating an asymmetric ion distribution. This phenomenon facilitates enhanced interfacial polarization, thereby contributing to the material's EMW absorption properties. Notably, the latex with 16 wt% SEBS (E-3), exhibiting a surface morphology similar to human cell tissues, achieves complete absorption of X-band ( f E = 4.20 GHz, RL min = −33.87 dB). Moreover, the latex demonstrates light density (0.78 g cm −3 ) and environmental stability. This study not only highlights the predominant loss mechanism in rubber-based wave-absorbing materials but also provides valuable insights into the design of multifunctional wave-absorbing materials.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2022
·Vol. 62
·期 4
·1052-1060
·
IF 2.573
Wentong Gao,Baoyin Yu,Shuhang Li,Shao Chen,Yuhong Zhu,Bo Zhang,Yilei Zhang,Hong Cai,Bing Han
SEBS-based thermoplastic elastomers modified by PA6 with maleic anhydride grafted copolymer (SEBS-g-MAH or PP-g-MAH) as the compatibilizer were prepared, and the effects of compatibilizer and PA6 on the mechanical and surface properties of blends were investigated in detail. The dosage ratio of SEBS-g-MAH to PA6 at 3:5 is an optimal combination for improving mechanical properties. The maleic anhydride of SEBS-g-MAH can react with the terminal amine of PA6 to form the SEBS-g-PA6 graft copolymer as a bridge at the phase interface. With the increase of PA6, a typical sea-island structure gradually appears in the matrix, and when PA6 is 15 phr, the tensile strength and ultimate elongation both reach the maximum of 18.58 MPa and 1097%, and the corresponding wear rate is only 54.4% of that before modification. Furthermore, the addition of PA6 also significantly reduced the contact angle of the blends to below 90°, transforming the hydrophobic surface into a hydrophilic surface. These outcomes provide an effective strategy for reinforcing and modifying the surface properties of thermoplastic elastomers and benefit the development of SEBS in industrial applications.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2021
·
IF 8.198
Ya Chen,Xiaojuan Liang,Jianping Liu,Suqin Chen,Weidong Xiang
All-inorganic CsPbX3 perovskite nanocrystals (PeNCs) are being investigated intensively as a promising optoelectronic material. However, the issues of its intrinsic instability and toxicity restrict their commercial applications. Herein, we proposed a facile method to improve the stability of CsPbX3PeNCs by encapsulating in a superhydrophobic polymer poly(styrene–ethylene–butylene–styrene) (SEBS) matrix. The blue–green–red emission CsPbX3@SEBS (X = Cl/Br, Br, Br/I) composite films exhibit high stability against moisture and are thermally stable. It is worth noticing that the photoluminescent quantum yield (PLQY) of the CsPbBrI2@SEBS composite film can reach 60%. The SEBS polymer matrix not only protects the PeNCs from contact with the ambient surroundings but also inhibits the escape of lead ions. Notably, the CsPbX3@SEBS flexible films were used as color conversion materials to construct a light-emitting diode (LED) device, and the device exhibits a wide color gamut (113% of the National Television System Committee (NTSC)). This work demonstrates the potential of using CsPbX3@SEBS flexible films as highly efficient color conversion materials for white LED and backlight displays.
研究领域:
材料科学
·
光学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Electronic Materials Letters
·
2024
·
IF 2.1
Yao Yubo,Dai Hongfei,Ji Mengnan,Han Ying,Jiang Bo,Cheng Chi,Song Xiaolei,Song Ying,Wu Guangfeng
Flexible strain sensors that combine high sensitivity and wide range are important for developing wearable electronics. In this paper, AgNWs/MXene/SEBS flexible strain sensor with high sensitivity and wide strain range was prepared using a thermoplastic elastomer (styrene-ethylene-butene-styrene) SEBS as the polymer matrix and AgNWs and MXene as the composite conductive fillers. The sensitivity of the AgNWs/MXene/SEBS sensor is significantly higher than that of the AgNWs/SEBS and MXene/SEBS sensors based on a single conductive filler. At 100% strain, the AgNWs/MXene/SEBS sensor has a sensitivity of 176.25. The sensor detects small strains of 0.5-5% as well as large strains of 5–50% with high linearity. The sensors remained stable after 200 cycles. The AgNWs/MXene/SEBS tensile sensors were subjected to array testing and finger bending recognition, and the sensors have promising applications in human motion monitoring. Graphical Abstract
研究领域:
材料科学
·
传感器技术
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2017
·Vol. 134
·期 24
·
IF 1.86
Xiaoyan Li,Shawei Tang,Xiaoqin Zhou,Shengheng Gu,Kai Huang,Jianjun Xu,Xia Wang,Ying Li
A functional modified montmorillonite (F-OMMT) was prepared by intercalating pristine montmorillonite using phosphonium salt and subsequent grafting through alkyl amino silane coupling. The synergistic effect of F-OMMT on the flame retardancy and char-forming mechanism of intumescent flame-retarded polystyrene- b -(ethylene- co -butylene)- b -styrene (SEBS) composite (SEBS/IFR) was investigated. When 2 wt % F-OMMT was introduced to the SEBS/IFR composite, the limited oxygen index (LOI) value of the composite increased from 24.9% to 26.9%, and the peak heat release rate significantly reduced according to microscale combustion calorimeter (MCC) test. The outer char demonstrated that F-OMMT produced dense and intact nanoparticles with a stabilised graphite structure. Meanwhile, F-OMMT helped form a crosslinking network containing large amounts of P, O, N, and Si in the char layer. Along with IFR, the amino functional group on the clay released nonflammable ammonia in the gaseous phase, the enhanced blowing effect can overcome the high-viscosity resistance of SEBS, more intumescent coating with strengthened clay platelets was then produced. In addition, the tensile properties of SEBS/IFR/F-OMMT composite increased evidently for the good dispersion effect. F-OMMT can serve as an effective and environmentally friendly additive for SEBS/IFR composite. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 44953.
研究领域:
材料科学
·
阻燃材料
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2021
·Vol. 138
·期 23
·50540
·
IF 3.125
Yue Shi,Fanzhi Meng,Zhongfu Zhao,Wei Liu,Chunqing Zhang
Hybrid anion exchange membranes (AEMs) were prepared via chemically functionalizing and crosslinking poly(styrene-b-[ethylene-co-butylene]-b-styrene) (SEBS) copolymers and low molecular weight homo-polystyrene (hPS). Via sequential chloromethylation, crosslinking, quaternization, and alkalization, a series of hPS/SEBS AEMs were obtained with varying content of hPS. Systematic structural, morphological, mechanical, absorption, and transport measurements reveal that these properties depend on the total PS content in the membranes. Particularly, increasing total PS content causes (a) PS domains in the AEMs transition the cylindrical morphology to lamella-like morphology with comparable correlation length; (b) Young's modulus, water uptake, swelling ratio, ionic exchange capacity and ionic conductivity of the AEMs, and T g of PS phase increase. In addition, the alkaline stability of the hPS/SEBS AEMs is also improved by addition of hPS. These findings suggest that the proposed method can develop high performance SEBS AEMs that are suitable for fuel cell applications.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 44
·15531-15540
·
IF 6.4
Yin Lv,Shuhua Tu,Min Chen
All-inorganic CsPbX3 (X = Cl, Br, I) perovskite quantum dots (PQDs)/polymer composite films have been used widely in light-emitting devices. Most methods of fabricating CsPbX3 PQDs/polymer composite films cannot meet the diverse requirements of real applications, particularly with regard to depositing or transferring films on different substrate types, including non-planar surfaces. It is still a challenge to prepare freestanding CsPbX3 PQDs/polymer composite films and deposit them on various substrates (especially non-planar substrates). Here, we report a facile way to prepare freestanding CsPbX3 PQDs/poly(styrene–ethylene–butylene–styrene) (SEBS) composite films via an interfacial-confinement (IC) strategy. The as-obtained films were applicable to various substrates (even curved and flexible substrates) and exhibited excellent stability against various environments. These freestanding CsPbX3 PQDs/SEBS composite films could be patterned readily for anti-counterfeiting and information-encryption applications. They also could be employed as color-conversion materials for white light-emitting diodes (LEDs).
研究领域:
材料科学
·
光学工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）