Polyurethane - Analytical Products / Alfa Chemistry

CAT	ISM61006
MDL Number	MFCD01775440

Size

Dressings and Securements for the Prevention of Peripheral Intravenous Catheter Failure in Adults (SAVE): A Pragmatic, Randomised Controlled, Superiority Trial

Claire M Rickard, Nicole Marsh, Joan Webster, Naomi Runnegar, Emily Larsen, Matthew R McGrail, Fiona Fullerton, Emilie Bettington, Jennifer A Whitty, Md Abu Choudhury, Haitham Tuffaha, Amanda Corley, David J McMillan, etc.

Lancet. 2018 Aug 4;392(10145):419-430.

PMID: 30057103

Removal of Polyurethane Implants

D Batiukov, V Podgaiski, D Ladutko

Aesthetic Plast Surg. 2019 Feb;43(1):70-75.

PMID: 30311035

Sound Absorption and Insulation Properties of a Polyurethane Foam Mixed With Electrospun Nylon-6 and Polyurethane Nanofibre Mats

Mira Park, Hyeon Ku Park, Hye Kyoung Shin, Dawon Kang, Bishweshwar Pant, Hang Kim, Jin-Kyu Song, Hak Yong Kim

J Nanosci Nanotechnol. 2019 Jun 1;19(6):3558-3563.

PMID: 30744785

Synthesis and Characterization of Self-Polishing Polyurethane Copolymers

Jong-Woon Ha, Seon-Mi Kim, Hyun Park, Do-Hoon Hwang

J Nanosci Nanotechnol. 2019 Oct 1;19(10):6554-6558.

PMID: 31026992

The Effect of Postmastectomy Radiation Therapy on Breast Implants: Material Analysis on Silicone and Polyurethane Prosthesis

Federico Lo Torto, Michela Relucenti, Giuseppe Familiari, Nicola Vaia, Donato Casella, Roberto Matassa, Selenia Miglietta, Franco Marinozzi, Fabiano Bini, Ilaria Fratoddi, Fabio Sciubba, Raffaele Cassese, etc.

Ann Plast Surg. 2018 Aug;81(2):228-234.

PMID: 29781852

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Case Study

Polyurethane Used for the Preparation of High-Performance Strain Sensors with Dual Conductive Layers

Liu, D., Ji, S., Zheng, L., Shi, L., Chen, H., Yan, X., ... & Yin, X. (2025). Chemical Engineering Journal, 160397.

Polyurethane (PU), with its excellent elasticity and processability, was employed in the fabrication of flexible, wearable strain sensors through electrospinning and dual-layer conductive modification. The study addresses the challenge of balancing detection sensitivity, strain range, and durability in sensor design.
PU fibrous membranes were prepared by electrospinning a 22 wt% PU solution in DMF/THF, producing porous mats with high mechanical compliance. To enhance conductivity and adhesion, the membranes were surface-modified using a mussel-inspired method with tannic acid (TA) and KH550, forming TK-PU. Silver nanoparticles (AgNPs) were then synthesized in situ on the membrane surface by chelating Ag⁺ ions followed by reduction with sodium ascorbate.
Subsequently, TA-functionalized carbon nanotubes (TA-CNTs) were anchored onto the Ag/TK-PU surface, forming a dual conductive CNT@Ag network. The resulting CNT@Ag/TK-PU sensor exhibited a low detection limit of 0.1%, a broad strain sensing range from 0 to 687%, and superior cyclic stability over 6000 deformation cycles.
This case exemplifies the key role of polyurethane not only as a flexible substrate but also as a structural component enabling multi-functional modifications. The resulting PU-based composite sensor offers strong potential in advanced wearable electronics for motion tracking, human-machine interfacing, and smart healthcare monitoring.

Polyurethane Used for the Preparation of Fluorescent Hydrogels for Fe³⁺ Ion Detection

Li, Tian-Xiang, et al. Colloids and Surfaces A: Physicochemical and Engineering Aspects (2025): 136611.

Polyurethane (PU), a versatile amphiphilic polymer, plays a critical role in the development of functional nanocomposites for environmental sensing. In this study, PU is utilized as a polymeric matrix for the incorporation of carbon dots (CDs), yielding fluorescent PU/CDs hydrogels with enhanced sensitivity toward Fe³⁺ ion detection in aqueous environments.
PU/CDs composites were prepared by dispersing various concentrations of CDs (0.4 wt%, 0.6 wt%, 0.8 wt%) into a PU solution composed of ethanol and deionized water (9:1). The mixture was stirred for 2 hours at room temperature, cast into PTFE molds, and dried under vacuum at 40 °C for 24 hours to obtain fluorescent PU films. Upon rehydration, hydrogels with equilibrium water contents up to 89 % were formed.
These PU/CDs hydrogels demonstrated significantly improved performance in fluorescence-based Fe³⁺ ion sensing. The detection limit for Fe³⁺ was remarkably enhanced, from 0.38 µM using CDs in solution to 0.98 nM in the PU/CDs hydrogel system-a 10³-fold improvement. Additionally, the PU matrix imparted excellent mechanical stability, maintaining structural integrity during swelling and sensing.
This case highlights the pivotal role of polyurethane not only as a structural support but also as a functional component that improves the performance of nanocomposite-based environmental sensors.

Polyurethane Used for the Preparation of Flexible Photothermal Tea Nanoparticle-Based Pressure Sensors

Tian, Kairui, et al. Applied Clay Science 262 (2024): 107589.

Polyurethane (PU), known for its elasticity, durability, and porous structure, was utilized as a versatile scaffold in the fabrication of a high-performance, tea nanoparticle-based photothermal pressure sensor. In this study, black tea extract was chelated with ferric chloride (FeCl₃·6H₂O) and coated onto halloysite nanotubes (Hal) to produce photothermally active tea nanoparticles@Hal. These nanostructures exhibited a remarkable photothermal conversion efficiency of 77.3%, with powder temperatures rising to 225.8 °C within 25 s under irradiation.
To fabricate the sensor, PU sponges were immersed in tea nanoparticles@Hal dispersions containing polyvinyl alcohol (PVA) and sodium hexametaphosphate as adhesion enhancers. The soaking process was optimized by stirring, sonication, and repeated squeezing to ensure uniform infiltration. Subsequent drying at 80 °C over 8 h with periodic flipping yielded a uniformly coated, conductive composite.
The resulting tea nanoparticles@Hal/PU sensor exhibited excellent mechanical flexibility, fast response time (132.8 ms), and durability over 400 cycles. Notably, the sensor's resistance varied predictably with applied pressure, enabling it to measure weight with high precision. Furthermore, it effectively monitored physiological movements, such as finger bending, demonstrating its potential in wearable health monitoring, medical diagnostics, and human-machine interaction.
Polyurethane's mechanical resilience and compatibility with nanomaterial integration make it an ideal substrate for developing next-generation flexible electronic sensors based on bio-inspired photothermal nanomaterials.