Cellulose nitrates from intermediate flax straw

A Promising Energetic Polymer from Posidonia oceanica Brown Algae: Synthesis, Characterization, and Kinetic Modeling

“…Additionally, the bands appeared at 1080, 830, 765, and 685 cm −1 , are related to the stretching vibration of CO group, the nitrate ester (ONO 2 ) stretching vibration, and the asymmetric and symmetric deformations of the ONO 2 group . These absorption bands are associated with the typical characteristics of nitrocellulose molecule already reported . Furthermore, these results clearly provide evidence for the efficiency of the used nitration process to obtain NC2 and MCCN1 from POBA‐C and POBA‐MCC, respectively.…”

“…These findings can be sustained by the results reported in the literature. [1] It is interesting to point out that the nitrogen content of NC2 was comparable to that of NC obtained from alfa grass (12.54%), [1] and higher than those obtained for NC from flax straw (12.34%), [56] miscanthus (11.85%), [29] and rhizophora (11.40%). [8] This work also achieved higher nitrogen content of MCCN2 in comparison with that of MCCN produced from alfa grass (12.91%).…”

“…[19,45] These absorption bands are associated with the typical characteristics of nitrocellulose mole cule already reported. [29,56,57] Furthermore, these results clearly provide evidence for the efficiency of the used nitration process to obtain NC2 and MCCN1 from POBA-C and POBA-MCC, respectively. It can also be noticed from Figure 2a-c, that the most detailed spectral alteration in the nitrated samples compared to their precursors is the significant diminution in the intensity of OH groups at 3430 cm −1 , indicating the substitution of OH functions by ONO 2 ones after nitration process.…”

“…As can be observed from these thermograms, all the studied samples (NC1, NC2, MCCN1 and MCCN2) exhibit only one exothermic peak corresponding to the thermolytic cleavage of the ONO 2 bonds accompanied by autocatalytic parallel reactions involving the www.advancedsciencenews.com www.mcp-journal.de formation of reactive species, which will accelerate the hydrolysis process of nitrated samples. [43,45,56] Moreover, based on Table 3, it is found that, by increasing the heating rate, the enthalpy of decomposition obtained by area under DSC peaks decreases and the decomposition temperatures (onset and peak top temperatures) shifted to higher values. Similar results were reported for the effect of heating rate on thermal decomposition of NC.…”

Highly soluble cellulose nitrates from unconventional feedstocks

“…The substrates for this study were celluloses isolated from Miscanthus (М), oat hulls (OH), and intermediate flax straw (IFS) by the nitric-acid method [21,22] at the pilot production site of IPCET SB RAS.…”