A blog from the University of Borås

Wednesday 9 June 2021

Inherently flame retardant regenerated cellulose fibres - 3rd update

Hi guys,

It is time to share my last post of Research Assistant Internship with you all regarding inherently flame-retardant regenerated cellulose fibers.
Regenerated cellulose fibers represent the most important derivatives of biomass comparatively cotton & synthetic fibers due to negative impact on environment & finally human health. In another way, application of nanotechnology in the textile industry has grown rapidly due to their unique, distinctive properties and allowing textiles to become multifunctional without affecting the inherent properties. Silica nanoparticles incorporated viscose has become one of the great examples beyond the endow ordinary products with their significant qualities. Although SNPs have the potential to benefit society, their interaction with biological systems and potential toxic effects must be carefully considered since they have totally different characteristics compared to the bulk form.
I did a literature search of ecotoxicity aspects of silica-rich viscose & its process chemicals as my 1st research question and then observed the usage of toxic, explosive, and flammable Carbon disulfide (CS2). This leads to exhaust air, wastewater, and the degradation of the cellulose backbone concurrent in the viscose process. Other than that, NaOH and H2SO4/Sulfuric acid are adding during the regenerated cellulose manufacturing process. Secondly, conducted the laboratory test to check silica leachability from invented viscose fiber. Received an unexpected result with the Si content and evidenced that it also has a health risk when exposing to manufactures as well as consumers, while creating a lot of direction for further investigation. 
It was a great experience for me to work with the RISE team & able to gather new knowledge interestingly. And hope you also had a good time during your internship & let’s celebrate our summer vacation after ppt and the report submission.

Hope to see you all soon.

Thanks,
Dula


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