Synthesis and characterization of chitosan-bentonite modified polyurethane with biomedical potential

Abstract

Research on the manufacture of polyurethane with chitosan and bentonite fillers modified with CTAB into montmorillonite (MMT) which will be applied to medical devices. The raw polyurethane from castor oil and diisocyanate is in the form of Toluene Diisocyanate (TDI). The addition of chitosan to castor oil polyurethane functions as an anti-bacterial agent. Pure polyurethane still has a deficiency of high temperatures and therefore added MMT which functions as a heat-retaining agent. The bacteria used are E. coli bacteria and Staphylococcus Aureus bacteria. The results showed a polyurethane that can withstand high temperatures is PU-MMT-CS 6%. The best anti-bacterial properties were obtained in polyurethane containing chitosan with higher concentrations (PU-MMT-CS 6%)

Chitosan-silanol groups functional magnetic nanoparticles for heavy metals and bacteria removal

“…As reported in the literature, all active sites on the material would be occupied when a large number of bacteria are present in the samples, and excessive bacterial uid would not be adsorbed (Rihayat, et al, 2020). Therefore, multiple adsorption experiments were conducted using 0.0025 g of adsorbent.…”

Effects of modified elastin-collagen matrix on the thermal and mechanical properties of Poly (lactic acid)

“…Polymers derived from petrochemical sources are not degradable and are difficult to recycle after their end-use applications, such as packaging [ 1 , 2 ]. To solve this aforementioned limitation of petroleum-based polymers, bio-based polymers have been extensively explored as a feasible option to ensure a sustainable green environment by substituting conventional polymers without compromising the important properties required for end-use applications.…”