**5. Conclusions**

From the studies reviewed in this chapter, it has been shown that scCO2 is a viable technique for the fabrication of various functional materials if appropriate

**187**

*Impregnation of Materials in Supercritical CO2 to Impart Various Functionalities*

agents suitable for the process are used. It can be an attractive alternative to traditional aqueous or organic solvents as it avoids toxic auxiliary chemicals and the use of water. Further studies are still required in selecting suitable functional agents which works best under scCO2 solvent through investigation of their solubility, compatibility, and process optimizations. Due to its environmental advantages, the scientific community and the industrial compartment would expect an increase in research in this area as scCO2 has the potential to replace the current water and

All the universities collaborating on the program are gratefully acknowledged.

*DOI: http://dx.doi.org/10.5772/intechopen.89223*

**Acknowledgements**

**Conflict of interest**

**Nomenclature**

Ag silver AGR agarose

m meter N nitrogen P phosphorus *Pa* pascal

solvent-based textile chemical processes in the future.

The authors declare no conflict of interest.

LLDPE linear low-density polyethylene

PCL-HA polycaprolactone hydroxyapatite

TMP 2,2,6,6-tetramethyl-4-piperidinol

QAS quaternary ammonium salt scCO2 supercritical carbon dioxide *Tg* glass transition temperature

CBC carboxybutyl chitosan

CO2 carbon dioxide DMS dimethyl siloxane

PCL polycaprolactone

TiO2 titanium dioxide

PE polyethylene PET polyester PLA polylactic acid *Pt* platinum

*Impregnation of Materials in Supercritical CO2 to Impart Various Functionalities DOI: http://dx.doi.org/10.5772/intechopen.89223*

agents suitable for the process are used. It can be an attractive alternative to traditional aqueous or organic solvents as it avoids toxic auxiliary chemicals and the use of water. Further studies are still required in selecting suitable functional agents which works best under scCO2 solvent through investigation of their solubility, compatibility, and process optimizations. Due to its environmental advantages, the scientific community and the industrial compartment would expect an increase in research in this area as scCO2 has the potential to replace the current water and solvent-based textile chemical processes in the future.
