COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Haoshan Xu,Shuhong Huang,Jiaqi Qian,Siming Liu,Ling Li,Xiaohui Zhao,Wenming Zhang
Herein, Li 7 La 3 Zr 2 O 12 (LLZO) ceramic nano-networks were introduced by electrostatic spinning into the polyethylene oxide (PEO)/thermoplastic polyurethane (TPU)/LiTFSI matrix (PTL) to constitute novel composite solid electrolytes due to the synergy between the nano-networks and the electrolyte matrix. By adjusting the LLZO nanonetwork with different weight ratios (5 wt%, 10 wt%, and 15 wt%) relative to the total weight of the PEO/TPU/LiTFSI/LLZO (PTLL) composite electrolyte, the electrochemical behavior of the gel electrolyte was optimized. When filled with a 10 wt% Li 7 La 3 Zr 2 O 12 nano-network, the PTLL has a maximum ionic conductivity of 1.33 × 10 −3 S cm −1 at 60 °C and an electrochemical stability window of 5.6 V. Furthermore, the LiFePO 4 /PTLL/Li battery presents an initial specific discharge capacity of 170 mA h g −1 at 0.1 C. After 100 cycles, it demonstrated superior cycle durability at 0.5 C at 60 °C, representing 96.1 % of the initial capacity. These results indicate that the PTLL electrolyte is a promising candidate for advanced solid state lithium batteries .
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 140
·期 13
·e53668
·
IF 3
Pengxin He,Haihong Pu,Xinfeng Li,Xiaoqiong Hao,Jianhua Ma
Flexible and highly conductive fiber has attracted considerable attention with its massive potential in functional fabric, stretchable circuits, and wearable electronic devices. Herein, we prepared a novel secondary structure composite fiber based on aramid nanofibers (ANF)-reinforced thermoplastic polyurethane (TPU) fiber accompanied by carbon nanotube (CNT)-coated on its surface. The composite fibers' dispersibility, micromorphology, and application were systematically investigated. The TPU/ANF-0.5 wt% sample showed a robust reinforcing effect, as Young's modulus and tensile strength reached 17.2 and 20.2 MPa, respectively. Meanwhile, the conductive coating layer in the outer frame was formed via a TPU solution with 10 wt% CNT content, which gives the fiber excellent flexible electrical conductivity. Such a unique structural design enables the fiber to be closely attached to human skin and monitor human movement. In addition, this TPU/ANF@CNT composite fiber can also be used for light and electric heating. The photothermal equilibrium temperature can reach 120°C in 50 s, and the electrothermal equilibrium temperature increases to 62°C under 30 V. In summary, this secondary structure composite fiber with excellent electrical and mechanical properties might have great practical application potential in wearable electronic devices.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 139
·期 22
·52268
·
IF 3.057
Zhixiang Cui,Yue Fan,Xiaolong Liu,Junhui Si,Qianting Wang
Nowadays, the environmental problems caused by industrial oily wastewater and offshore oil leakage are becoming more and more serious. Here, the 3-D porous polyurethane/deacetylated acetate cellulose (TPU/d-CA) composite foam with outstanding mechanical property and oil/water separation performance was successfully prepared. The morphology, wettability, mechanical properties, and oil/water separation performances had been systematically studied. The results showed that TPU/d-CA composite foam could be used as water and oil removing material, respectively, for a series of oil/water mixture only under gravity force, due to its lipophilicity and hydrophilicity. It has high-separation flux, which can reach up to 43,000 L/m 2 ·h and 85,000 L/m 2 ·h for water and oil, respectively and all the separation efficiency exceeds 98%. It also can be used as adsorbent material to absorb various oils, and the absorption capacity for carbon tetrachloride reached up to 34 g/g. Moreover, it can selectively, rapidly, and continuously separate oil or water by assisted peristaltic pump. After 15 cycle times, its separation efficiency is still as high as 98%. It has excellent comprehensive mechanical properties and antifouling ability. These results indicated that 3-D TPU/d-CA composite foam has broadly application prospects in oil/water separation field.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POLYMER SCIENCE
·
2026
·
IF 3.9
Kaihang Zhou,Xiaoshuai Han,Bin He,Shuijian He,Gaigai Duan,Shaohua Jiang
To tackle the issue of interfacial incompatibility between hydrophilic acid-activated sepiolite nanofibers (A-SEP) and hydrophobic thermoplastic polyurethane (TPU) matrices, this study utilizes methyl trimethoxysilane (MTMS) to perform surface hydrophobization modification on A-SEP. By silane coupling, hydrophobic methyl groups ( CH 3 ) are introduced to improve interfacial compatibility. MTMS modified-acid-activated sepiolite nanofibers/TPU (MSNF/TPU) nanocomposite films are prepared using the solution casting method, and systematic characterization reveals that: the mechanical properties of the modified composites (tensile strength, elongation at break, Young's modulus) are significantly enhanced, thermal stability (decomposition temperature, residual carbon rate) is improved, and the glass transition temperature ( T g ) is adjustable. The transparency in the visible light spectrum is positively correlated with the state of fiber dispersion. This work offers a scalable interfacial engineering strategy for clay mineral-reinforced polymer composites. Graphical Incorporation of MSNF into a TPU matrix significantly enhances mechanical performance, with optimal loading (1.0 wt%) improving both tensile stress and strain at break. Compared to sepiolite-based composites (R-SEP, A-SEP), MSNF/TPU exhibits superior reinforcement. Uniform MSNF dispersion enables efficient stress transfer, yielding high-performance flexible composites for advanced applications.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Xin Xu,Huijia Wang,Yanlan Zhou,Zhiqiang Li,Zhuolu Li,Xile Chen,Ni Li
To address the oxidative degradation of thermoplastic polyurethane (TPU) under UV or thermal exposure, silica nanoparticles surface-modified with the antioxidant 2,6-di-tert-butyl-4-hydroxymethylphenol (DHPL-SiO 2 NPs) were incorporated into TPU to prepare TPU@DHPL-SiO 2 NPs composite films. DHPL-SiO 2 NPs effects on the mechanical degradation behavior of TPU films after bearing mechanical tensile, UV exposure, or thermal exposure were investigated. The results indicate that among the prepared films, the TPU film containing 3 wt% DHPL-SiO 2 NPs (TPU-3) presents desirable mechanical degradation behaviors under different conditions. When the strain amplitude is 700% during cyclic loading-unloading tensile measurements, TPU-3 shows lower internal heat accumulated with a hysteresis energy dissipation of 52.1 ± 2.55 MJ m −3 and superior flexibility with a secant modulus of 6.3 ± 0.11 MPa. After 8 days of UV exposure, TPU-3 indicates tensile strength and elongation loss rates of 5.1 ± 0.21% and 13.3 ± 0.62% (8.1 ± 0.32% and 12.7 ± 0.53% for TPU-0), respectively. While after 8 days of thermal exposure, TPU-3 presents only tensile strength and elongation loss rates of 3.3 ± 0.11% and 3.0 ± 0.25% (13.3 ± 0.33% and 10.5 ± 0.57% for TPU-0), respectively. Furthermore, when bearing 8 days of thermal exposure and then subjected to cyclic tensile tests with a fixed strain of 200%, TPU-3 still maintains a low tensile strength loss rate of 17.8 ± 0.33% and a high hysteresis ratio of 20.2 ± 0.21% (22.8 ± 0.38% and 18.5 ± 0.22% for TPU-0). Compared with neat TPU films, TPU composites filled with 3 wt% DHPL-SiO 2 NPs exhibit retarded mechanical degradation behavior. Download: Download high-res image (189KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
IET Nanodielectrics
·
2026
·Vol. 9
·期 1
·e70037
·
IF 4.3
Zhaobei Chen,Huiyi Hu,Xin Teng,Congzhou Zeng,Xuanbing Jin,Lingzhi Nie,Zhimin Dang,Qixin Zhuang,Peiyuan Zuo
Incorporating high-permittivity ceramic nanofillers is an effective strategy to enhance the dielectric constant via interfacial polarisation, thereby boosting the electromechanical sensitivity of dielectric elastomer actuators (DEAs). However, filler agglomeration due to surface energy mismatch deteriorates material properties and weakens actuation capabilities. To address this challenge, we propose a ‘flexible interfacial anchoring’ strategy distinct from conventional rigid modification. KR38S coupling agents are covalently anchored onto BaTiO 3 nanoparticles via condensation reaction. Unlike hyperbranched modification requiring a thick polymer coating and topological interlocking, the long dioctyl chains of KR38S achieve a dual function: hydrophobic alkyl segments form an isolation layer that mitigates interfacial voids and charge traps, while flexible chains entangle with TPU polyether soft segments, creating a compliant cushion layer dynamically interconnected with the matrix. Benefiting from improved dispersibility and compatibility, the dielectric properties of the composites were substantially enhanced. The breakdown strength increased from 154.5 kV/mm for pristine TPU to 213.2 kV/mm for 5 wt% mBT/TPU, and the 10 wt% composite achieved an actuation displacement of 3.03 mm at 46.2 kV/mm, compared to 0.69 mm for pristine TPU at 29.2 kV/mm. This study provides a facile route to high-performance DEAs for soft robotics, flexible electronics, and intelligent wearables.
✓ 已验证
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Yu Wang,Yangqing Huang,Yaming Jiang
The rapid growth of the smart wearable device market has driven an increasing demand for advanced materials and sensing technologies that offer high sensitivity and stability. Herein, we report the development of a lightweight, highly sensitive, and wide-range pressure sensor based on a carbonized cellulose acetate (CCA)/thermoplastic polyurethane (TPU) nanofiber membrane, fabricated through high-temperature carbonization and vacuum filtration techniques. By uniformly coating TPU onto the carbonized nanofiber surface, the intrinsic brittleness of the carbonized fibers was effectively mitigated, yielding a flexible and robust hybrid structure. The resulting CCA/TPU pressure sensor exhibits an impressive sensitivity of up to 101.22 kPa⁻¹ across a wide detection range of 0–50 kPa, a rapid response time of 20 ms, a minimal detection limit of 5 Pa, and outstanding durability over 10,000 loading-unloading cycles. This sensor is capable of accurately detecting diverse pressure and strain variations, demonstrating remarkable potential in physiological signal monitoring, motion recognition, emergency signal transmission, and safety protection applications. Notably, the sensor enables real-time recording of impact forces during shock events and provides critical data for evaluating the performance of cushioning materials. Beyond these applications, the conductive carbonized nanofiber membrane offers significant promise in the fields of smart textiles, biomedicine, and environmental monitoring.
研究领域:
材料科学
·
生物医学工程
·
智能可穿戴设备
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Fenghui Xie,Wei Wu,Huanbo Hu,Junjian Ye,Lu Cui,Zhengyi Wang,Wenxue Zhang
In order to enhance the mechanical properties of lattice structure parts made of thermoplastic polyurethane elastomer (TPU) prepared by selective laser sintering (SLS) technology, this study employed the oxidative self-polymerization of dopamine (DA) to prepare polydopamine-modified silicon carbide whiskers (PDA-SiC) fillers with a core-shell structure. These fillers were uniformly dispersed in a waterborne polyurethane (WPU) to form a coating solution, which was then used to prepare TPU printed parts with a uniform PDA-SiC/WPU coating structure through post-treatment impregnating-curing processes. The coated TPU parts exhibited tensile strength, elongation at break, and room temperature compressive strength of 8.37 MPa, 610.2%, and 1.062 MPa, respectively, representing improvements of 40.9%, 33.2%, and 353.3% compared to pure TPU parts. This approach effectively enhanced the mechanical performance of SLS-formed TPU parts, strengthening their application in the field of flexible lattice structure parts.
研究领域:
材料科学
·
生物仿生学
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2024
·
IF 6.7
Haidong Zhao,Xiangfei Xiao,Hao Xing,Xin Jia,Shuping Jin
Intelligent wearable strain sensors are indispensable for monitoring human locomotion and human–machine interactions. Herein, we present a nanocomposite ionogel film (thickness of 0.2 mm) prepared using polyvinylpyrrolidone (PVP), polyurethane (TPU), 1-butyl-3-methylimidazolium hexafluorophosphate, and black phosphorus (BP) in a dimethylformamide solution, referred to as BP@PVP/TPU, using the electrostatic spinning. While the ionogel film exhibited exceptional properties, including excellent self-adhesiveness, high tensile strength (1866 %), and high fracture strength (0.59 MPa), at room temperature, it displayed high tensile strength (940 %) and high fracture strength (3.01 MPa) even when stored at −35 °C for up to 15 days. Subsequently, a self-adhesive strain sensor was fabricated from the BP@PVP/TPU ionogel using copper wire. After 1000 pull-up cycles under 30 % strain, the sensing signal remained essentially unchanged, and the sensor exhibited satisfactory adhesion to different substrates (e.g., an impressive adhesion strength of up to 299 kPa to iron sheets). The excellent performance of the BP@PVP/TPU ionogel enabled the developed sensor to monitor various human body movements in real time. This approach is both economical and convenient and provides an innovative avenue for developing next-generation wearable strain sensors.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
·
2024
·
IF 4.1
Chaoying Wang,Chuangao Ma,Zhuping Han,Mengnan Li,Shaoning Lu,Peibang Dai
Highly sensitive sensors have attracted considerable attention in areas such as electronic skin, health monitoring and artificial intelligence. Herein, a simple and efficient approach was proposed to fabricate hierarchically structured flexible sensors. A common metal mesh was used as a template and its pattern was transferred to the surface of a composite film of silver nanoparticles (AgNPs) decorated polydopamine (PDA) and polyurethane (TPU) electrospun fibers by hot imprinting. The resulting film with a uniform convex microstructure array on the surface was used as the conductive sensing layer of the AgNPs/PDA/TPU sensor. The sensor exhibited a linear detection range increased from 15 kPa to 20 kPa compared to the control sensor without the microstructure. Furthermore, the sensitivity was improved from 8.13 kPa −1 to 10.44 kPa −1 . The response time and recovery time of the sensor were determined to be 110 ms and 90 ms, respectively, and it maintained good stability at 10 kPa even after 1000 compression cycles. In addition, the sensor enabled real-time pressure signal detection for touch, joint movement and voice recognition, showing promising applications in health monitoring, pressure detection and human-machine interaction.
研究领域:
材料科学
·
生物医学工程
·
电子皮肤技术
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Boxin Zhao,Xinxin Li,Changshun Gu,Yanli Wang,Hengchao Liu,Xiujie Guo,Yan Zhang,Hua Tian,Wenjing Qin,Shougen Yin
Fiber flexible strain sensors have the characteristics of small volume, light weight, good flexibility, easy deformation/recovery, and easy weaving. They can conform to various complex surfaces and endure various deformations, such as twisting and bending. Furthermore, the simple preparation process of fiber sensors lowers the production cost significantly. These features make them promising candidates for applications in motion monitoring, human-machine interface, and flexible intelligent products. However, the low sensitivity and narrow sensing range of existing sensors are still major challenges for their further development. To address these challenges, this paper proposes a MXene/MXene:MWCNTs@TPU fiber sensor, which adopts a two-step pre-stretching strategy to modify the porous TPU fiber surface with MXene and MWCNTs. The graded porous TPU fibers obtained by wet spinning can achieve 805 % stretching, providing a reliable substrate support for the fiber sensor, the combination of multi-dimensional conductive materials and the introduction of cracks and wrinkles enhance the sensitivity 277 and sensing range 510 % of the fiber sensor. The fiber sensor can detect various human motions and gestures by directly attaching to the skin or weaving into textiles, and can also be applied to information encryption transmission, demonstrating its huge potential in human health monitoring, intelligent flexible electronic products and encrypted communication.
研究领域:
材料科学
·
柔性电子
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Hui Dong,Jingchao Sun,Xingmin Liu,Xiaodan Jiang,Shaowei Lu
The universal application of wearable strain sensors in various situations for human-activity monitoring is considerably limited by the contradiction between high sensitivity and broad working range. There still remains a huge challenge to design sensors featuring simultaneous broad working range and high sensitivity. Herein, a typical bilayer-conductive structure Ti3C2Tx MXene/carbon nanotubes (CNTs)/thermoplastic polyurethane (TPU) composite film was developed by a simple and scalable vacuum filtration process utilizing a porous electrospun thermoplastic polyurethane (TPU) mat as a skeleton. The MXene/CNTs/TPU strain sensor is composed of two parts: a brittle densely stacked MXene upper lamella and a flexible MXene/CNT-decorated fibrous network lower layer. Benefiting from the synergetic effect of the two parts along with hydrogen-bonding interactions between the porous TPU fiber mat and MXene sheets, the MXene/CNTs/TPU strain sensor possesses both a broad working range (up to 330%) and high sensitivity (maximum gauge factor of 2911) as well as superb long-term durability (2600 cycles under the strain of 50%). Finally, the sensor can be successfully employed for human movement monitoring, from tiny facial expressions, respiration, and pulse beat to large-scale finger and elbow bending, demonstrating a promising and attractive application for wearable devices and human–machine interaction.
研究领域:
材料科学
·
生物医学工程
·
可穿戴设备
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）