Page 50 - New Cloth Market November 2022 Digital Edition

Chitosan-Based Sustainable Textile Technology: Process, Mechanism, Innovation & Safety

Conclusion and future perspectives
Table 3. Different techniques and applications of chitosan-based
microencapsulation processes for textile. Chitosan is biodegradable in human
health, plant, and environment
Application Microencapsulation technique
organisms. Concerning economic
Limonene oil microencapsulated Coacervation process by NaOH aspect, it is a by-product of fishing
textile for antibacterial activity dripping technique industry. Textile is one of the most
Cosmato textile-chitosan/vanillin Spray drying technique usable consumer products in our daily
microcapsules life although the processes are mostly
hazardous. The whole supply chain of
Microcapsulation of citronella oil Coacervation process by NaOH
textiles still requires more research on
dripping technique
how to establish the sustainability
Microcapsulation of linseed oil Multilayer coacervation method regarding health safety and cost. The
use of chitosan could open the door
Phase change material encapsulation Chitosan as binder
for developing a sustainable industrial
for the application of mosquito repellent encapsulated using chitosan as shell practice in fiber production and fabric
and antibacterial activity. Chitosan and materials [101]. Sodium alginate (95 treatments for its nontoxic property and
polyacrylate copolymers have been ml, 0.6% w/v) and 18 mM calcium low cost. Moreover, the blended and
involved in the process for chloride are added to the leaf extract. modified chitosans that extend the
encapsulating the DEET in situ. Chitosan is added to this solution by availability of various high-end
Chitosan solution (0.5% w/v) is stirring for 30 min and left overnight at functional textiles with reasonable price
prepared using 0.6% (w/v) acetic acid room temperature. It is then centrifuged will enhance the research and
in a flask which is equipped with a at 1500 rpm for 15 min. The coacervate development on chitosan-based textile
condenser, magnetic stirrer, and phase will be separated out, washed, processing.
nitrogen flow facility. Butyl acrylate (BA) and stored at 5°C for further analysis.
and N,N-diethyl-m-toluamide (DEET) Author details
are added to the chitosan solution, and The release rate of the core materials 1,2, 1,2*
the temperature is maintained at 80°C through the chitosan shell depends on Jagadish Roy Fabien Salaün ,
1,2 3
for 10 min with stirring. In general, the temperature, humidity, and time. On Stéphane Giraud , Ada Ferri and
DEET is easily dissolved in poly butyl top of that, the release property of Jinping Guan 4
acrylate, and the dissolution is active component depends on
uniformly homogeneous. Tert-butyl chitosan concentration and * Address all correspondence to:
hydroperoxide is added to the mixture temperature [93]. For example, the [email protected]
at 80°C for 4 h. A white emulsion will release of citronella oil is 20–25% when
1 University Lille Nord de France,
be achieved, and the emulsion is the operational temperature is
Lille, France
sprayed on a 4-mm cotton fabric. The maintained at 40–60°C. Besides,
fabric sample should be bleached chitosan wall membrane concentration 2 ENSAIT, GEMTEX, Roubaix,
before the treatment, and maximum 10 0.2–0.5% is considered as a good France
mg/cm2 emulsion is maintained. microcapsule for a better release
3 Department of Materials Science
property. The release property is
and Chemical Engineering,
Chinese standard GB/T 17322.10- entirely inhibited when the operational
Polytechnic University of Turin,
1998, a standard test, is followed to temperature is 80°C.
Turin, Italy
check the mosquito repellency at 25°C
and 65% humidity compared to The mechanism underlying the release 4 College of textile and Clothing
untreated fabric sample. The behavior is the contraction of chitosan Engineering, Soochow
percentage of mosquito repellency is membrane due to increase in University, Suzhou, Jiangsu,
determined based on the difference temperature. As a result, the pore size China
between control and treated fabric. For reduced and the release of core References
example, ED90 indicates 90% effective materials stopped [93]. On the other
[1] Niekraszewicz B, Niekraszewicz A.
dose. In this process, 4% DEET is hand, the chitosan-core material
The structure of alginate, chitin and
enough to achieve the ED90 value, interaction also affects the release
chitosan fibers. In: Handbook of
while the content is 1.5 mg/cm2 for 4 property. In this regard, the
Textile Fibre Structure Natural,
h protection. Apart from the formulation, concentration of chitosan and Regenerated, Inorganic and
Vitex negundo leaf extract is also used crosslinking agent should be optimized Specialist Fibres, vol. 2. Woodhead
as a mosquito repellent and is properly. Publishing Limited; 2009. p. 266–304.

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