Regenerated cellulose membrane prepared with ionic liquid 1-butyl-3-methylimidazolium chloride as solvent using wheat straw

Regenerated cellulose/polyvinyl alcohol (PVA) blend membranes were prepared from a solution of cellulose and PVA in an ionic liquid of 1-allyl-3-methyimidazolium chloride (AMImCl). SEM images showed that the phase separation on the mixture was severely formed when the content of PVA was higher than 10% by volume. However, when the content of PVA in the mixture was lower than 6%, the cellulose and PVA were well-distributed. The regenerated blend membranes using the AMImCl presenting reasonable crystallinity were superior to those of regenerated pure cellulose membrane. In conclusion, the compatible properties of blend membranes from regenerated cellulose/PVA (6%) were improved and the blend membranes kept original biodegradability.

Download Full-text

Ionic Liquid Regenerated Cellulose Membrane Electroless Plated By Silver Layer For ECG Signal Monitoring

10.21203/rs.3.rs-714236/v1 ◽

2021 ◽

Author(s):

Xueli Fu ◽

Yanping Wang ◽

Wei Wang ◽

Dan Yu

Keyword(s):

Ionic Liquid ◽

Skin Irritation ◽

Regenerated Cellulose ◽

Cellulose Membrane ◽

Ecg Signal ◽

Contact Impedance ◽

Skin Contact ◽

Dry Electrode ◽

Wide Range

Abstract Flexible electrodes have attracted the interest of a wide range of people because they can monitor human health signals like ECG, EMG and EEG as wearable devices. However, PDMS-based membrane electrodes have the problem of difficulty in depositing metal layers, while fabric electrodes have high contact impedance. Furthermore, the widely used Ag/AgCl electrodes have the shortcomings of skin inflammation or skin irritation. Therefore, we fabricate a skin-like electrical conductive electrode via electroless silver plating on the surface of regenerated cellulose membrane, in which the cellulose membrane is obtained by the dissolution of cotton fiber with green solvent ionic liquid [Bmim]Cl. The as-prepared biocompatible electrode with low skin-electrode contact impedance can be used as a dry electrode for a long-term period of use. The impedance at 700 Hz is only 8 kΩ/cm2, and the conductivity can reach 252 s/cm. After 5 hours of wear, the skin contact impedance of the electrode was only 10 kΩ/cm2 under 700 Hz(when AgNO3 was used at a concentration of 0.20 mol/L). Importantly, the electrodes not only provide a stable and clear ECG signal, but also offer a high level of comfort and low impedance, when used for long-term health monitoring.

Download Full-text

Correction to “Recycling of Superbase-Based Ionic Liquid Solvents for the Production of Textile-Grade Regenerated Cellulose Fibers in the Lyocell Process”

ACS Sustainable Chemistry & Engineering ◽

10.1021/acssuschemeng.0c07773 ◽

2020 ◽

Vol 8 (49) ◽

pp. 18345-18345

Author(s):

Sherif Elsayed ◽

Jussi Helminen ◽

Sanna Hellsten ◽

Chamseddine Guizani ◽

Joanna Witos ◽

...

Keyword(s):

Ionic Liquid ◽

Cellulose Fibers ◽

Regenerated Cellulose

Download Full-text

A graphene oxide facilitated a highly porous and effective antibacterial regenerated cellulose membrane containing stabilized silver nanoparticles

Cellulose ◽

10.1007/s10570-014-0395-z ◽

2014 ◽

Vol 21 (6) ◽

pp. 4261-4270 ◽

Cited By ~ 17

Author(s):

Soon Wei Chook ◽

Chin Hua Chia ◽

Sarani Zakaria ◽

Mohd Khan Ayob ◽

Nay Ming Huang ◽

...

Keyword(s):

Silver Nanoparticles ◽

Graphene Oxide ◽

Regenerated Cellulose ◽

Cellulose Membrane ◽

Highly Porous

Download Full-text

Bionanocomposites of regenerated cellulose/zeolite prepared using environmentally benign ionic liquid solvent

Carbohydrate Polymers ◽

10.1016/j.carbpol.2014.02.085 ◽

2014 ◽

Vol 106 ◽

pp. 326-334 ◽

Cited By ~ 34

Author(s):

Mohammad Soheilmoghaddam ◽

Mat Uzir Wahit ◽

Wong Tuck Whye ◽

Noel Ibrahim Akos ◽

Raheleh Heidar Pour ◽

...

Keyword(s):

Ionic Liquid ◽

Environmentally Benign ◽

Regenerated Cellulose

Download Full-text

Isolation of Immunoglobulin from Chicken Egg Yolk using Single-Stage Ultrafiltration with 100-kDa Regenerated Cellulose Membranes

International Journal of Food Engineering ◽

10.2202/1556-3758.2086 ◽

2011 ◽

Vol 7 (1) ◽

Cited By ~ 1

Author(s):

Jianguo Liu ◽

Juan Yang ◽

Hai Xu ◽

Hu Zhu ◽

Jianbo Qu ◽

...

Keyword(s):

Molecular Weight ◽

Egg Yolk ◽

Single Stage ◽

Regenerated Cellulose ◽

Cellulose Membrane ◽

Permeate Flux ◽

Operational Parameters ◽

Solution Ph ◽

Chicken Egg ◽

Chicken Egg Yolk

The aim of this work is to develop a membrane-based cost-effective process for the rapid isolation of immunoglobulin from chicken egg yolk. It was found that a single-stage ultrafiltration using a 100 kDa molecular weight cut-off regenerated cellulose membrane could be employed to isolate immunoglobulin from the crude feedstock. The effects of operational parameters (solution pH, ionic strength, stirring speed and permeate flux) on the transmission of immunoglobulin and the presence of impurity protein with molecular weight close to immunoglobulin were quantified using the parameter scanning ultrafiltration technique. Under optimized conditions, the purity of immunoglobulin obtained was about 85 percent after the single-stage ultrafiltration process, and the recovery of immunoglobulin from the feedstock was 91 percent.

Download Full-text

X-ray induced degradation of regenerated cellulose membrane films

Polymer Degradation and Stability ◽

10.1016/0141-3910(95)00145-c ◽

1995 ◽

Vol 50 (1) ◽

pp. 125-130 ◽

Cited By ~ 13

Author(s):

Yoshio Kawano ◽

Amadeu J.M. Logarezzi

Keyword(s):

Regenerated Cellulose ◽

Cellulose Membrane ◽

X Ray

Download Full-text

Properties and applications of cellulose regenerated from cellulose/imidazolium-based ionic liquid/co-solvent solutions: A short review

e-Polymers ◽

10.1515/epoly-2021-0086 ◽

2021 ◽

Vol 21 (1) ◽

pp. 869-880

Author(s):

Ahmad Adlie Shamsuri ◽

Khalina Abdan ◽

Siti Nurul Ain Md. Jamil

Keyword(s):

Ionic Liquid ◽

Ionic Liquids ◽

Cellulose Acetate ◽

Processing Time ◽

Short Review ◽

Organic Liquids ◽

Regenerated Cellulose ◽

Solvent Mixtures ◽

Different Types ◽

Novel Applications

Abstract An improvement of ecological conscience currently has increased the consciousness of researchers in reducing the processing time and cost of solvent for the dissolution of cellulose. Latterly, ionic liquids have been employed to process cellulose as they are recyclable and nonvolatile. Besides that, biopolymers such as chitosan, chitin, starch, protein, and cellulose acetate can also be processed by using ionic liquids for diverse applications. In this short review, examples of imidazolium-based ionic liquids that are commonly used for the dissolution of cellulose are implied. Furthermore, examples of organic liquids that are utilized as co-solvents for ionic liquids were revealed. In addition, examples of imidazolium-based ionic liquid/co-solvent mixtures utilized in the dissolution of cellulose and other biopolymers are also demonstrated. The properties and applications of cellulose and its blends regenerated from different types of cellulose/imidazolium-based ionic liquid/co-solvent solutions are also shortly reviewed. The information acquired from this review gives a better understanding of the changes in the properties of regenerated cellulose and regenerated cellulose blends. In addition, this short review serves as a model basis for the creation of novel applications of regenerated cellulose and regenerated cellulose blends by utilizing imidazolium-based ionic liquid/co-solvent mixtures.

Download Full-text