Impact of molecular structure and plasticization of PVC membranes in the response of solid-state ion-selective electrodes

IF 6.5 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Sensors and Actuators Reports Pub Date : 2025-02-05 DOI:10.1016/j.snr.2025.100301

Coral Salvo-Comino , Luis E. Alonso-Pastor , Clara Pérez-González , Stefano Pettinelli , Karina C. Núñez Carrero , Miguel Ángel Rodríguez-Pérez , María Luz Rodríguez-Méndez

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Abstract

Potentiometric sensors are essential in various industries due to their high sensitivity, simplicity, and cost-effectiveness. However, enhancing sensitivity, largely dependent on membrane diffusion, remains challenging. This study investigates the role of polyvinyl chloride (PVC) molecular weight and plasticizer type on optimizing potentiometric sensor performance for tartaric acid detection. Two PVCs with different molecular weights (HIGH and LOW) and distinct plasticizers were evaluated. Results demonstrated that membranes plasticized with dibutyl sebacate, a linear plasticizer, exhibited high sensitivity (0.0239 mV/pX) and repeatability, achieving a lower limit of detection (LOD = 4.31 × 10⁻⁵ M) compared to those with a bulky plasticizer. Specifically, HIGH PVC combined with a linear plasticizer provided saturation-free measurements, ensuring greater accuracy in tartaric acid quantification. This research underscores the impact of plasticizer selection on sensor optimization, enhancing accuracy and reliability in food quality control. By establishing the relationship between PVC structure and plasticizer type, this study contributes to advancing sensor technology for improved food safety and quality assessment.

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来源期刊

Sensors and Actuators Reports Multiple-

CiteScore

9.60

自引率

0.00%

发文量

审稿时长

49 days

期刊介绍： Sensors and Actuators Reports is a peer-reviewed open access journal launched out from the Sensors and Actuators journal family. Sensors and Actuators Reports is dedicated to publishing new and original works in the field of all type of sensors and actuators, including bio-, chemical-, physical-, and nano- sensors and actuators, which demonstrates significant progress beyond the current state of the art. The journal regularly publishes original research papers, reviews, and short communications. For research papers and short communications, the journal aims to publish the new and original work supported by experimental results and as such purely theoretical works are not accepted.