Synthesis and Characterization of Polymer Based Materials, for Multi-Functional Applications

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Applications".

Deadline for manuscript submissions: closed (20 July 2023) | Viewed by 1557

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Nano Fusion Technology Research Group, Division of Frontier Fibers, Institute for Fiber Engineering (IFES), Interdisciplinary Cluster for Cutting Edge Research (ICCER), Shinshu University, Tokida 3-15-1, Ueda, Nagano Prefecture 386-8567, Japan
Interests: polymer and polymer composites; smart textiles; electrospinning; biomedical

E-Mail Website
Guest Editor
Nano Fusion Technology Research Group, Institute for Fiber Engineering (IFES), Interdisciplinary Cluster for Cutting Edge Research (ICCER), Shinshu University, Tokida 3-15-1, Ueda, Nagano 386-8567, Japan
Interests: nanofibers; electrospinning; bio-medical; sensors; carbon materials; food packing; nano-catalysis; supercapacitor; drug delivery
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Special Issue Information

Dear Colleagues,

Polymer-based materials have attracted much attention due to their outstanding characteristics, such as their light weight, low cost, recyclability, and excellent mechanical and chemical stability. Recent advancements in polymer science and technology for wearable smart devices have introduced great convenience to human life. Devices such as touchscreen displays, health-monitoring sensors, functional clothing, and other smart textile products all rely on the excellent electrical and mechanical properties of polymer materials. Moreover, polymers have also been used in biomedical applications, such as biosensors and tissue engineering, due to their good properties and biocompatibility. In addition, natural polymers such as cellulose also have received significant attention in recent years from both academia and industry due to their variety of good properties, such as a high surface area to low volume ratio. This Special Issue will focus on advances in these types of materials and their significance for the future.

Dr. Nadir Hussain
Prof. Dr. Ick-Soo Kim
Guest Editors

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Keywords

  • polymer and polymer composites
  • smart textiles
  • electrospinning
  • biomedical

Published Papers (1 paper)

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Research

14 pages, 3610 KiB  
Article
Sound Absorption of the Absorber Composed of a Shunt Loudspeaker and Porous Materials in Tandem
by Xin Li, Zhigang Cao, Lijun Xu and Bilong Liu
Polymers 2023, 15(14), 3051; https://doi.org/10.3390/polym15143051 - 15 Jul 2023
Cited by 2 | Viewed by 1141
Abstract
To investigate the sound absorption of the absorber composed of a shunt loudspeaker (SL) and porous materials (PM) in tandem, the normal absorption coefficients for six samples of different groups of parameters are measured using impedance tubes. It is shown that a composite [...] Read more.
To investigate the sound absorption of the absorber composed of a shunt loudspeaker (SL) and porous materials (PM) in tandem, the normal absorption coefficients for six samples of different groups of parameters are measured using impedance tubes. It is shown that a composite structure consisting of a porous material, an air layer, a shunt loudspeaker, and an air layer arranged in sequence (PM + Air1 + SL + Air2) has the potential to achieve broadband sound absorption close to three octaves in the frequency range of 200–1600 Hz. To further explore the sound absorption mechanism of “PM + Air1 + SL + Air2”, a theoretical model based on the transfer matrix method is established, and a numerical model is built in the pressure acoustic module using COMSOL Multi-physics field software. The sound absorption coefficients and acoustic impedances predicted are in good agreement with those measured. The concerned “PM + Air1 + SL + Air2” with suitable parameters has two distinguishable sound absorption peaks in the low frequency domain and a well sound absorption spectrum similar to that of the porous material layer in the high-frequency domain. The reason for the superior sound absorption performance of “PM + Air1 + SL + Air2” lies in the fact that under the common action of the diaphragm’s mechanical vibration, the circuit’s damping loss, and the porous material’s viscous dissipation, the sound energy consumption is mainly dominated by SL in the low frequency domain and captured by PM in the high-frequency domain. Full article
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