Fabrication of Flexible Thin Films from Sodium Alginate Biopolymer Composites for Smart Wearable Sensors Targeting Respiratory Health.

IF 5.5 2区化学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY

Biomacromolecules Pub Date : 2025-04-07 DOI:10.1021/acs.biomac.5c00179

Nurdiana Nordin, Mun Lie Loke, Azzuliani Supangat, Nurfarhanim Abu Bakar

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引用次数: 0

Abstract

Modern wearable sensors for health monitoring are becoming increasingly popular due to their versatility. This study investigates the effects of Co²⁺ ions in flexible alginate-based composite films with doped cobalt and poly(3,4-ethylene-dioxythiophene):polystyrenesulfonate (PEDOT:PSS) for respiratory health monitoring. Contrary to expectations, the Co²⁺-doped Na-Alg/PEDOT:PSS/Glycerol 3b nanocomposite showed lower LED intensity (168 ± 75 au) and conductivity (5.04 × 10^-5 S/m). The addition of Co²⁺ ions negatively affected the electrical performance and hindered the charge mobility and structural integrity. In contrast, the Na-Alg/PEDOT:PSS/glycerol 2b film achieved higher LED intensity (236 ± 25 au) and maximum conductivity (6.61 × 10^-5 S/m), which can be attributed to the plasticizing effect of glycerol that improves the homogeneity of the film and charge transport. This composite also shows excellent wearability on the skin, pressure sensitivity, and the ability to monitor respiration.

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来源期刊

Biomacromolecules 化学-高分子科学

CiteScore

10.60

自引率

4.80%

发文量

417

审稿时长

1.6 months

期刊介绍： Biomacromolecules is a leading forum for the dissemination of cutting-edge research at the interface of polymer science and biology. Submissions to Biomacromolecules should contain strong elements of innovation in terms of macromolecular design, synthesis and characterization, or in the application of polymer materials to biology and medicine. Topics covered by Biomacromolecules include, but are not exclusively limited to: sustainable polymers, polymers based on natural and renewable resources, degradable polymers, polymer conjugates, polymeric drugs, polymers in biocatalysis, biomacromolecular assembly, biomimetic polymers, polymer-biomineral hybrids, biomimetic-polymer processing, polymer recycling, bioactive polymer surfaces, original polymer design for biomedical applications such as immunotherapy, drug delivery, gene delivery, antimicrobial applications, diagnostic imaging and biosensing, polymers in tissue engineering and regenerative medicine, polymeric scaffolds and hydrogels for cell culture and delivery.