Performance modelling of the TBCC-activated peroxide system for low-temperature bleaching of cotton using response surface methodology

Synthesis of Novel Cationic Bleach Activator, N-[4-(N,N,N)-Triethylammoniumchloride- Butanoyl] Butyrolactam, for Cellulose : Optimization and Theoretical Limitations

“…When phenyl is used in the molecule structure (Figure 5e) similar with the structure reported as N-[4- Luo et al, 2015], the interaction between triethyl ammonium and the oxygen atoms of the carbonyl group decreased since the butanoyl segment can adopt different conformations while the phenyl group is highly rigid. However, the reactivity of the butanoyl carbonyl towards nucleophilic attacks signi cantly decreased by phenyl substitution.…”

“…Peracids enable bleaching at low temperatures because they are stronger oxidizing agents. [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] Tetraacetylethylenediamine (TAED), and the sodium salt of nonanoylbenzenesulphonic acid (NOBS) are two activators in widespread commercial use and are widely used in laundry detergent formulations for removal of coloring contaminants from textiles. However, TAED has poor solubility in water and NOBS has a negative charge on its leaving group with long alkyl chain, which leads to low substantivity for cellulose.…”

“…It contains one cationic group (quaternary ammonium cations), which can provide high water solubility and inherent great a nity toward negatively charged cellulosic bers in aqueous solutions, leading to improved bleach effectiveness. [21][22][23][24][25][26] Altay et al synthesized a less expensive, sustainable and more effective aliphatic acyl chloride based cationic bleach activator, N-[4-(N,N,N)-triethylammoniumchloride-butyryl] caprolactam (TBUCC), as compared to aromatic ones. 27 This study focuses on synthesis, optimization and theoretical limitations of a novel, more sustainable and effective cationic bleach activator, N-[4-(N,N,N)-triethylammoniumchloride-butanoyl] butyrolactam (TBUCB), for cellulose as compared to the aromatic ones reported in previous studies.…”

“…27 This study focuses on synthesis, optimization and theoretical limitations of a novel, more sustainable and effective cationic bleach activator, N-[4-(N,N,N)-triethylammoniumchloride-butanoyl] butyrolactam (TBUCB), for cellulose as compared to the aromatic ones reported in previous studies. [13][14][17][18][19][20][21][22][23][24][25][26] Firstly, a novel cationic bleach activator, N-[4-(N,N,N)-triethylammoniumchloride-butanoyl] butyrolactam (TBUCB), was developed and synthesized. γ-butyrolactam, which is a low cost alternative and has higher hydrolytic stability than ε-caprolactam 28 was used as a leaving group to produce aliphatic peracid with one quaternary ammonium chloride site, N-[4-(N,N,N)-triethylammoniumchloride-butanoyl] butyrolactam (TBUCB).…”

Synthesis of a Novel and More Sustainable Cationic Bleach Activator, N-[4-(N,N,N)-Triethylammoniumchloride-butanoyl] Butyrolactam, for Cotton: Optimization and Theoretical Limitations

“…The generated peracid increases the oxidation rates and consequently improves the whiteness degree at lower temperatures. The bleaching mechanism of peracid mainly occurs by epoxidation of double bonds of the colored impurities in the fibers. − …”