Biocompatible, Flexible and Conductive Polymers Prepared by Biomass-derived Ionic Liquid Treatment

2021 ◽  
Author(s):  
Yannan Lu ◽  
Ruqing Lu ◽  
Xiaochun Hang ◽  
David James Young

Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is a promising, biocompatible conductive polymer for bio-integrated electronics with health-care applications. However, the intrinsic biocompatibility of PEDOT: PSS is potentially jeopardized by post-treatment additives such as ionic...

2020 ◽  
Vol 4 (1) ◽  
pp. 27 ◽  
Author(s):  
Sahin Demirci ◽  
Nurettin Sahiner

Polyethyleneimine (PEI) cryogels with interconnected superporous morphology were synthesized via the cryopolymerization technique. Then, conductive polymers, poly(Aniline) (PANi), poly(Pyrrole) (PPy), and poly(Thiophene) (PTh) were prepared within these PEI cryogels. Then, the conductive polymer embedding PEI composites’ characterization was carried morphologically using scanning electron microscope (SEM) by means of Fourier Transform Infrared Radiation (FT-IR) spectrometer, and by means of electrical conductivity measurements using an electrometer. Among all the prepared cryogel conductive polymer composites, the highest value in terms of conductivity was determined for PEI/PANi cryogel composites with 4.80 × 10−3 S.cm−1. Afterward, to prepare polymeric ionic liquid (PIL) forms of PEI and PEI/PANi composites. To assess the effect of anions on the conductivities of the prepared composites, PEI-based cryogels were anion ex-changed after protonation with HCl by treatment of aqueous solutions of sodium dicyanamide (Na+[N(CN)2]−), ammonium hexafluorophosphate (NH4+[PF6]−), sodium tetrafluoroborate (Na+[BF4]−), and potassium thiocyanate (K+[SCN]−), separately. Furthermore, PEI-based cryogel composites and their PIL forms were tested as a sensor for CO2 gas. The higher conductivity changes were observed on bare PEI cryogel and PEI+[BF4]− PIL cryogels with 1000-fold decrease on conductivity upon 240 min CO2 exposure. The sensitivity and recovery percent of bare PEI and PEI+[BF4]− PIL cryogels were shown almost the same with a two-fold decrease in the presence of 0.009 mole of CO2 gas, and approximately 30% recovery after the fifth consecutive reuse.


Cellulose ◽  
2021 ◽  
Author(s):  
Diego B. Menezes ◽  
Fernando M. Diz ◽  
Luiz F. Romanholo Ferreira ◽  
Yendry Corrales ◽  
José R. V. Baudrit ◽  
...  

Mobile technology is showing a wide acceptance in the health-care system. As technology is changing there are many health-care applications in the market. The need of these applications is increasing day by day because of unhealthy lifestyle. Among the various ailments, the most common lifestyle disease is diabetes. As we know diabetes can’t be cured, it can only be controlled by managing one’s lifestyle. In this paper, we propose a new application DiaM for managing and mentoring a diabetic patient. DiaM is Artificial Intelligence (AI) based mobile application which not only connect to manage one’s lifestyle but to build the strong will power. Our application has been designed in such a way that all the aspects are covered to manageone’s lifestyle. We have implemented an AI based system which smartly categorizes the patients in different states, which utilizes the different parameter like eating habit, stress, exercise, sleep time, smoking, genetic, BMI, and various other symptoms. On the basis of these states suggestions are been provided to the patient for improving the lifestyle. DiaM also enables patient to connect with the Doctor for monitoring and mentoring. Our application provides real-time alerts to doctor so that they can monitor patient anytime. It is extremely necessary to manage health conditions therefore our application provides a better,accurate and sustainable healthcare system.


2016 ◽  
Vol 47 (8) ◽  
pp. 2228-2252 ◽  
Author(s):  
Subhankar Maity ◽  
Arobindo Chatterjee

This article reviews the preparation, development and characteristics of conductive polymer-based electro-conductive textile composites for electromagnetic interference shielding. Modification of ordinary textile materials in the form of electro-conductive composites makes them suitable for this purpose. Various metallic and non-metallic electro-conductive textiles have been explored here as the material for electromagnetic shielding. Different approaches of preparing textile electromagnetic shield have been described here. Recent advancements of application of conductive polymers in the field of textile electromagnetic shielding are described. Conductive polymer-coated textile materials showed superior electrical property as electromagnetic shield. Different methods of applications of conductive polymers onto textile surface are described here with their relative merits and demerits. Different conductive polymer-coated woven and nonwoven fabrics prepared by various researchers for electromagnetic shielding are taken into account. The effects of different process parameters of polymer processing on electromagnetic shielding are described.


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