Related Experiment Video
Updated: Feb 13, 2026
09:04
Covalent Binding of Antibodies to Cellulose Paper Discs and Their Applications in Naked-eye Colorimetric Immunoassays
Published on: October 21, 2016
15.2K
Superhydrophobic Paper from Nanostructured Fluorinated Cellulose Esters
Pegah Khanjani1, Alistair W T King2, Gabriel J Partl2
1Department of Bioproducts and Biosystems , Aalto University School of Chemical Engineering , Kemistintie 1 , 02150 Espoo , Finland.
ACS Applied Materials & Interfaces
|March 9, 2018
Summary
Researchers created superhydrophobic paper using fluorinated cellulose esters for self-cleaning applications. This eco-friendly method offers potential for advanced materials in packaging, textiles, and microfluidics.
Area of Science:
- Materials Science
- Surface Chemistry
Background:
- Superhydrophobic surfaces offer self-cleaning properties with applications in various industries.
- Developing cost-effective and environmentally friendly superhydrophobization methods is crucial.
Purpose of the Study:
- To produce superhydrophobic paper using nanostructured fluorinated cellulose esters.
- To explore the modification of cellulose nanocrystals for reduced surface energy.
Main Methods:
- Spin-coating a dispersion of nanostructured fluorinated cellulose esters.
- Modification of cellulose nanocrystals with perfluorononanoyl chloride and perfluoroundecanoyl chloride.
- Nanoprecipitation technique to obtain stable dispersions.
Main Results:
- Successfully produced superhydrophobic paper.
- Characterized fluorinated cellulose esters using NMR, FTIR, XPS, and contact angle measurements.
- Investigated nanostructure morphology via DLS, SEM, and XRD.
Conclusions:
- The developed method provides an economically and ecologically viable route to superhydrophobic paper.
- The modified cellulose esters exhibit properties suitable for self-cleaning surfaces.
- Further applications in packaging, textiles, and microfluidics are anticipated.
Related Concept Videos
01:15Cellulose and Pectic Polysaccharides
5.0K
Every plant cell has a cell wall that protects the cell, provides structural support, and gives the cell shape. Cellulose, the main structural component of the plant cell wall, makes up over 30% of plant matter. It is the most abundant organic compound on earth. Cellulose is an unbranched polysaccharide composed of linear chains of glucose molecules linked by β (1→4) glycosidic bonds.
As a cell matures, its cell wall specializes according to its type. For example, the...
As a cell matures, its cell wall specializes according to its type. For example, the...
5.0K
01:13Electrophilic Aromatic Substitution: Fluorination and Iodination of Benzene
7.6K
Bromination and chlorination of aromatic rings by electrophilic aromatic substitution reactions are easily achieved, but fluorination and iodination are difficult to achieve. Fluorine is so reactive that its reaction with benzene is difficult to control, resulting in poor yields of monofluoroaromatic products. To address this, Selectfluor reagent is used as a fluorine source in which a fluorine atom is bonded to a positively charged nitrogen.
7.6K
01:12Acid Halides to Esters: Alcoholysis
4.1K
Alcoholysis is a nucleophilic acyl substitution reaction in which an alcohol functions as a nucleophile. Acid halides react with alcohol to produce esters. The mechanism proceeds in three steps:
4.1K
01:17Esters to Alcohols: Hydride Reductions
4.8K
Esters are reduced to primary alcohols when treated with a strong reducing agent like lithium aluminum hydride. The reaction requires two equivalents of the reducing agent and proceeds via an aldehyde intermediate.
Lithium aluminum hydride is a source of hydride ions and functions as a nucleophile. The mechanism proceeds in three steps. Firstly, the nucleophilic hydride ion attacks the carbonyl carbon of the ester to form a tetrahedral intermediate. Subsequently, the carbonyl group re-forms,...
Lithium aluminum hydride is a source of hydride ions and functions as a nucleophile. The mechanism proceeds in three steps. Firstly, the nucleophilic hydride ion attacks the carbonyl carbon of the ester to form a tetrahedral intermediate. Subsequently, the carbonyl group re-forms,...
4.8K
01:08Esters to Alcohols: Grignard Reaction
6.2K
The reaction of an ester with a Grignard reagent, followed by hydrolysis of the magnesium alkoxide salt in aqueous acid, yields a tertiary alcohol. In the case of formate esters, secondary alcohols are formed.
The reaction requires two equivalents of the Grignard reagent and introduces two identical alkyl groups, derived from the Grignard reagent, bonded to the hydroxyl-bearing carbon of the alcohol.
The reaction follows the typical nucleophilic acyl substitution mechanism. The Grignard...
The reaction requires two equivalents of the Grignard reagent and introduces two identical alkyl groups, derived from the Grignard reagent, bonded to the hydroxyl-bearing carbon of the alcohol.
The reaction follows the typical nucleophilic acyl substitution mechanism. The Grignard...
6.2K
01:25Esters to Carboxylic Acids: Saponification
6.6K
Esters can be hydrolyzed to carboxylic acids under acidic or basic conditions. Base-promoted hydrolysis of esters is a nucleophilic acyl substitution reaction in which esters react with an aqueous base, followed by an acid to give carboxylic acids. This reaction is also known as saponification because it forms the basis for making soaps from fats.
The reaction requires a base in stoichiometric amounts, which participates in the reaction and is not regenerated later. So, the base acts as a...
The reaction requires a base in stoichiometric amounts, which participates in the reaction and is not regenerated later. So, the base acts as a...
6.6K