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APPLIED SURFACE SCIENCE · 2026 · IF 6.6

Aptes-regulated interfacial loading of n-octadecane/SiO2 phase change nanocapsules on PU/PEG fibrous membranes for stable thermal management

Yanlan Zhou,Ruishuo Guo,Huijia Wang,Xin Xu,Zhiqiang Li,Zhuolu Li,Xile Chen,Ni Li

APTES modification promotes uniform PCNC loading on PU/PEG fibers. • The composite membrane shows enhanced thermal conductivity of 0.129 W · m⁻ 1 ·K⁻1. • The membrane maintains good stability after thermal cycling and water treatment. • High solar reflectance (∼95%) enables effective temperature regulation under simulated solar irradiation. Polyethylene glycol (PEG)-based phase change fibrous membranes are promising flexible thermal management materials, but their performance is often limited by melting-induced deformation, low heat-transfer efficiency, and insufficient cycling stability. In this study, an APTES-regulated interfacial loading strategy was developed by loading amino-functionalized n-octadecane/SiO 2 phase change nanocapsules (N x -PCNCs) onto electrospun PU/PEG fibrous membranes. The effect of APTES concentration on the capsule loading state and thermal management performance was systematically investigated. Moderate APTES modification improved the loading and dispersion of PCNCs on the fiber. Among the samples, PU/PEG/N 20 -PCNCs showed a relatively uniform particle distribution and a thermal conductivity of 0.129 ± 0.015 W · m⁻ 1 · K⁻ 1 . The composite fibrous membrane maintained stable phase-change behavior after 200 melting–crystallization cycles and 20 water-treatment cycles, demonstrating good cycling stability under the tested conditions. Moreover, PU/PEG/N 20 -PCNCs exhibited an average solar reflectance of approximately 95 ± 0.8% and reduced the surface temperature by 9.2 and 2.3 °C compared with PU and PU/PEG fibrous membranes under simulated solar irradiation. These results demonstrate that APTES-regulated interfacial loading of PCNCs is an effective strategy for improving the thermal storage, stability, and temperature-buffering performance of PU/PEG phase change fibrous membranes. Download: Download high-res image (136KB) Download: Download full-size image

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JOURNAL OF ELECTROANALYTICAL CHEMISTRY · 2021 · IF 4.464

A long-term stable and flexible glucose sensor coated with poly(ethylene glycol)-modified polyurethane

Rui Feng,Yao Chu,Xiaohao Wang,Qinfeng Wu,Fei Tang

Flexible biosensors have the great potential to be applied in medical diagnosis, wearable devices, fermentation and other fields. This paper proposes a manufacturing scheme of a flexible enzymatic glucose sensor coated with polyurethane modified by poly(ethylene glycol), PU-PEG, as a protective membrane, which can overcome the problems of poor consistency and short service life of the electrochemical sensor. A platinum-black electrode formed by electroplating platinum-black nanoparticles onto a flexible gold electrode is used as an enzyme carrier. The enzyme is electrosprayed evenly onto the electrode to avoid aggregation and to control quality. Glutaraldehyde is used as a cross-linking agent to immobilise the enzyme layer. Additionally, using PU-PEG as the protective membrane improves the anti-interference performance, controls the enzymatic reaction rate and makes long-term stable operation of the sensor possible. The experimental results show that the linear range of the sensor is 0.5 ~ 25 mM, the minimum detection limit is 0.25 mM, and the sensitivity is as high as 3.418 μA/mM. The measurement results of the sensors show good consistency, with a maximum absolute deviation of only 5.52%. The effective working time in 37℃ bovine serum with a glucose concentration of 5 mM is up to 23 days.

CAS / MDL: 69-93-2

研究领域: 生物传感器 · 医疗诊断 · 可穿戴设备 · 发酵

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Aptes-regulated interfacial loading of n-octadecane/SiO2 phase change nanocapsules on PU/PEG fibrous membranes for stable thermal management

A long-term stable and flexible glucose sensor coated with poly(ethylene glycol)-modified polyurethane