FTIR and UV/vis as methods for evaluation of oxidative degradation of model paper: DFT approach for carbonyl vibrations

Experimental and Theoretical Study of the Yellowing of Ancient Paper

“…At dry air atmosphere we expect development of carbonyl groups, while at humid atmosphere (RH=59%) high contribution of hydrolysis of glycosidic bonds is expected. The temperature and relative humidity were chosen according to our previous studies [11,12]. The open reaction chamber was used to eliminate the influence of gaseous products of paper degradation on the degradation progress, in contrast to closed vessel in which volatiles, especially acidic ones, additionally degrade paper samples.…”

“…• a moderate oxidation of the cellulose functional groups towards the carbonylic groups of various degrees of freedom and chemical environment is expected [12,16].…”

“…Vibrational spectroscopy and chemical analysis have been carried out, in an attempt to clarify the configuration within the glucopyranose ring of the carbonyls responsible for the observed absorption spectrum in moderate oxidation. [8,[11][12][13].…”

Evaluating the impact of different exogenous factors on silk textiles deterioration with use of size exclusion chromatography

“…For samples aged in dry air, the changes in MWD are the least, the range of MMD curves is between 31.5 and 1000 kDa. It is not surprising that oxidation is a dominating reaction during ageing in dry air which has been observed in the literature for both silk and cellulose [18,53,67,68], which explains why depolymerisation of the polypeptide is not a prevailing reaction here. This oxidation can, however, bring about the chain breakage and in this way contribute to the drop in its molecular weight.…”

Fourier Transform Spectroscopy of Cotton and Cotton Trash

“…The application of Fourier Transform (FT) spectroscopy instruments has broadened the knowledge and capabilities of textile researchers to study a host of projects including surface modifications of cotton fibers to impart flame retardant capabilities, monitoring aging effects on ancient cellulosic artifacts (Kavkler et al, 2011;Lojewski et al, 2010), determining the amount of dye fixation to fabrics (Choi, H-M, et al, 1994), and characterization of cotton byproducts during the processing of cotton (Cheng and Biswas, 2011), to name a few. As can be observed from the above examples, the power and versatility of analyzing textiles with FT spectroscopy is proven.…”