Nanofibrillar cellulose from Posidonia oceanica: Properties and morphological features

Reuse of red algae waste for the production of cellulose nanocrystals and its application in polymer nanocomposites

“…The XRD patterns show that the major peaks at 2θ values of around 14.8 °, 16.4°, 22.4°, which correspond to the (110), (11-0 ) and (002) planes [44], indicate the predominance of cellulose I in all samples (AW, ATAW, BAW, CNC30, CNC40 and CNC80). It is noteworthy that the peaks observed at 2θ of 25-30 °, in AW and BAW samples, correspond to mineral impurities that are generally presented in sea biomass, such as silica (SiO2) and weddeellite (CaC2O4.2H2O) [12,45]. However, the absence of the XRD peaks in the bleached sample pattern (BAW) indicate that the mineral compounds were removed after the bleaching treatment ( Figure 5).…”

Effect of the oxidation treatment on the production of cellulose nanofiber suspensions from Posidonia oceanica : The rheological aspect

“…The CNF suspensions were produced from Posidonia oceanica balls and leaves as reported elsewhere (Bettaieb et al, 2015). Briefly, the cellulose fibers from Posidonia oceanica balls (F-POB) and leaves (F-POL) were subjected to TEMPO-mediated oxidation according to the protocol reported by Saito et al (2007) with the amendment that the reagent ratios were varied.…”

“…Since the 1980s, when Turbak et al (1983) and Herrick et al (1983) reported the preparation of nanofibrillar cellulose from wood fibers in water suspension using high pressure homogenization, an exponential number of scientific works were performed on the isolation and characterization of CNF using high-pressure homogenizer (Alila et al, 2013;Andresen et al, 2006;Andresen and Stenius, 2007;Bettaieb et al, 2015;Djafari Petroudy et al, 2014;Erkisen et al, 2008;Nakagaito and Yano, 2004;Rezayati Charani et al, 2013;Stenstad et al, 2008;Syverud and Stenius, 2009;Winuprasith and Suphantharika, 2013;Zhang et al, 2012), micro-fluidizer (Bendahou et al, 2010), ultrafine friction grinder (Abe et al, 2007 Abe andYano, 2009;Hassan et al, 2012;Iwamoto et al, 2005Iwamoto et al, , 2008Jang et al, 2013;Nechyporchuk et al, 2015a;Subramanian et al, 2008), cryo-crushing (Chakraborty et al, 2005;Janardhnan and Sain, 2006), and ultrasonic method (Zhao et al, 2007). For all those processes, high energy consumption is required.…”

Production of new cellulose nanomaterial from red algae marine biomass Gelidium elegans

“…Due to its unique characteristics such as high strength and modulus, high surface area, high aspect ratio, high tensile strength and stiffness, cost effectiveness, light weight and environmental benefits due to recyclable and biodegradable, the market demand for this natural fiber has increased exponentially (Lam, Male, Chong, Leung & Luong, 2012). In recent year, a new nanomaterial source (solid nanocellulose fiber) was successfully isolated from marine biomass such as Posidonia oceanica ball and leaves (Bettaieb, Khiari, Dufresne, Mhenni, Putaux & Boufi, 2015;. Compared to land plant, marine biomass has become more popular as a promising source for nanocellulose production near future.…”

“…Therefore, a successive bleaching treatment is necessary to remove the natural pigment and chlorophyll for production of highly purified, whiteness extracted cellulose pulp form the red algae biomass. Basically, two main oxidizing bleaching agents namely sodium chlorite (NaClO2) and hydrogen peroxide (H2O2) were used to bleach the algae biomass fiber to produce bleached red algae pulp (Bettaieb, Khiari, Dufresne, Mhenni, Putaux & Boufi, 2015;Saelee, Yingkamhaeng, Nimchua & Sukyai, 2016). Due to environmental concern, chlorite-free hydrogen peroxide was selected as oxidizing bleaching agent for pulping process in this study.…”