Microcrystalline cellulose from Posidonia oceanica brown algae: Extraction and characterization

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

“…The comparison between FTIR spectra of POBA‐C, POBA‐MCC, and C‐MCC before and after nitration is shown in Figure a–c. The major absorption bands and the corresponding structure assignments observed in the FTIR spectra of POBA‐C, POBA‐MCC, and C‐MCC are reported in our previous paper …”

“…XRD analysis was performed to obtain information about alterations in crystalline structure and crystallinity index of all studied samples before and after the nitration process. As can be seen from Figure a–c, the XRD patterns of POBA‐C, POBA‐MCC, and C‐MCC exhibited the typical diffraction peaks of cellulose I allomorph detected at 2θ values around 14.8°, 16.2°, 22.4°, and 34.4 °, with assigned planes of 10, 110, 200, and 004, respectively . After nitration, the experimental diffractograms of conventional NC1 and NC2 as well as MCCN1 and MCCN2 (Figure d) showed the disappearance of the diffraction peaks attributed to 10, 110, and 004, together with the appearance of new peaks at around 2θ = 12.5 ° and 20 °.…”

“…In this work, the used POBA were recuperated from the Annaba beaches, in Algeria. POBA‐C and POBA‐MCC were prepared from raw POBA based on the procedure described in detail in our recent work . Traditional nitrocellulose from cotton (NC1) was previously prepared in our laboratory as reported by Trache et al, and it was considered as reference material.…”

“…According to the literature, the use of cellulose as polymer precursor to produce energetic materials instead of other thermoplastic elastomer is due to its potential benefits like the easy and cheap availability, non‐toxicity, biodegradability, renewability as well as the great oxygen amount . Furthermore, it is well known that cotton and wood are the most commonly used raw materials to obtain cellulose precursor . Whereas, these sources are widely used in other fields, such as building products, fabrication of pulp, and textile industry, which pushed the scientific community to explore alternative sources of cellulosic fibers based on non‐wood species like aquatic plants, grass, agricultural residues, and their by‐products.…”

“…Moreover, the applications of POBA is mostly restricted to some traditional areas such as papermaking, adsorbent for removing dyes or phenol, and as reinforcement agent in biodegradable composites production . Recently, it has been utilized as starting material for cellulose and its derivatives such as microcrystalline cellulose, nanocrystalline cellulose, and nanofibrillar cellulose . However, POBA is not used yet for the synthesis of NC.…”