Chitosan/Polyaniline Conductive Blends for Developing Packaging: Electrical, Morphological, Structural and Thermal Properties

Oliveira, Ana Carolina Salgado de; Ugucioni, Júlio César; Rocha, Roney Alves da; Santos, Taline Amorim; Borges, Soraia Vilela

doi:10.1007/s10924-019-01519-7

Cited by 16 publications

(26 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is a non‐polluter and atoxic polysaccharide, which presents anti‐bacterial, biodegradability, and filmogenic properties. Moreover, it is highly hydrophilic due to the presence of hydroxyl and amine groups (Joghataei et al., 2019; de Oliveira et al., 2019). Its applications are as encapsulating agent for controlled release, antimicrobial agent, chelant agent for water treatment, healing of tissues, drug delivery, and as films for packaging (Jeevahan & Chandrasekaran, 2019; Liu et al., 2019; Rubina et al., 2019; Stanciu & Nichifor, 2019; Wang et al., 2019; Z. Yu et al., 2017; Yuan et al., 2019; Zhong et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

Effect of glutaraldehyde/glycerol ratios on the properties of chitosan films

Oliveira

Ugucioni

Borges

2020

J Food Process Preserv

View full text Add to dashboard Cite

Chitosan is a biodegradable polymer and could be applied as packaging. To make chitosan more competitive, plasticizers and cross‐linking agents are added in films. The aim of this paper was to obtain and characterize films of chitosan without or with glutaraldehyde (0; 0.99 mg/150 ml) in different concentrations of glycerol (0, 10, 20, and 30%w/w), for improving the properties like tensile resistance and the water vapor permeability. The films were homogeneous, without phase separation, and with a similar chemical structure. The glutaraldehyde makes the chitosan partly hydrophobic, leading to glycerol saturation in samples with glutaraldehyde and 20 or 30% of glycerol. The Principal Component Analysis for the film with glutaraldehyde and 10% of glycerol presented 3.60 g.mm/kPa.day.m2 of water vapor permeability and 36.96 MPa of tensile resistance. The use of plasticizer and cross‐linking in combination is promising to make chitosan film more competitive on the market of packaging. Practical Applications The addition of glutaraldehyde and glycerol was efficient to improve film properties like water vapor permeability and mechanical properties. The chitosan films with glycerol and glutaraldehyde exhibited similar physical and chemical properties to non‐biodegradable polymers from the petrochemical origin and non‐renewable sources. Furthermore, chitosan films with these additives can be applied as packaging, improving the competitiveness of this biopolymer to the market. The technology described in the paper is important for application as secondary or tertiary packaging in the food industry.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of glutaraldehyde/glycerol ratios on the properties of chitosan films

Oliveira

Ugucioni

Borges

2020

J Food Process Preserv

View full text Add to dashboard Cite

show abstract

“…8,9,[14][15][16][17][18] PANI has different oxidation states controlled by oxi-reduction processes, in which protonation and deprotonation occur due to the addition of acids and alkaline solutions. 12,19 Many recent works of Cs/PANI blends carried out the in-situ polymerization of PANI associated with chitosan generating a powder with the ability to adsorb materials such as dyes. 15,20 Another paper developed a highperformance microbial fuel cell, 8 for application to wound healing 21 or with anti-corrosive actions.…”

Section: Introductionmentioning

confidence: 99%

“…When Cs and PANI are mixed, this advantage is incorporated into the blends: The rapid PANI electrical response. 24 Previous studies 1,19 tried unsuccessfully to obtain Cs/PANI flexible films. Plasticizers are widely used as polymeric additives, which improve flexibility, permeability, and mechanical properties such as tensile strength.…”

Section: Introductionmentioning

confidence: 99%

Effect of glycerol on electrical conducting of chitosan/polyaniline blends

Oliveira

Santos

Ugucioni

et al. 2021

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

Chitosan (Cs) and polyaniline (PANI) were studied in this article for possible application as conductive and flexible films. Cs is a biodegradable polymer, that presents interesting properties as film applications. Otherwise, PANI is a semiconductor polymer with a wide range of applications. The films were produced by casting adding 30% glycerol and glutaraldehyde. The morphology, thermally, chemical structure, and electrical properties of films were obtained.Results showed the casting technique becomes possible to obtain self-standing films, with a chemical structure identical to precursor materials. Glutaraldehyde reacted to amine groups of terminal PANI chains, acting in the increase of electric conductivity and decrease of sheet resistance. The plasticizing effect of glycerol increased the spacing between Cs chains and facilitated the PANI dispersion. Therefore, glycerol and glutaraldehyde proved to be extremely efficient in increasing the electrical conductivity of blends.

show abstract

“…Polyaniline is a polymer with high environmental stability, high electrical conductivity, easy process, and very cost-effective. But its application is limited due to its relatively low mechanical strength [4]. On the other hand, industrialization and human activities produce large quantities of industrial wastewater containing heavy metals such as Cr (VI).…”

Section: Introductionmentioning

confidence: 99%

Bio-Electroreduction of Chromium (VI) using Immobilized Sulfate Reducing Bacteria on Conductive Microbial Cellulose Biocathode

Loloei

Rezaee

Ghods

2021

Preprint

View full text Add to dashboard Cite

The present study evaluated effect of conductive microbial cellulose (MC) biocathode as a carbohyrate biopolymer in hexavalent chromium bio-electroreduction using immobilized sulfate reducing bacteria (SRB). The morphology studies using SEM shows that the biofilm of SRB was formed a good density on the conductive microbial cellulose biocathode. The Brunauer, Emmett and Teller (BET) analysis revealed that the particle-size distribution in the conductive biocathode was 0.9 nm. The kinetic studies shows that the Cr (VI) removal process fallow of pseudo-first-order kinetics with a constant rate was 0.6 h− 1. The energy consumption of the bio-electroreduction system was 2.7×10− 2 kWh/m3. The EDXA spectrum of sediments showed the presence of chromium peak, indicating that Cr (VI) was reduced on the bio-resuction system. The obtained results indicate that proposed bio-electroreduction system using immobilized sulfate reducing bacteria on the conductive microbial cellulose biocathode could be an efficient method for chromium bio-reduction from wastewaters.

show abstract

Chitosan/Polyaniline Conductive Blends for Developing Packaging: Electrical, Morphological, Structural and Thermal Properties

Cited by 16 publications

References 42 publications

Effect of glutaraldehyde/glycerol ratios on the properties of chitosan films

Effect of glutaraldehyde/glycerol ratios on the properties of chitosan films

Effect of glycerol on electrical conducting of chitosan/polyaniline blends

Bio-Electroreduction of Chromium (VI) using Immobilized Sulfate Reducing Bacteria on Conductive Microbial Cellulose Biocathode

Contact Info

Product

Resources

About