Cellulose powder fromCladophora sp. algae

Abstract

The surface are and crystallinity was measured on a cellulose powder made from Cladophora sp. algae. The algae cellulose powder was found to have a very high surface area (63.4 m2/g, N2 gas adsorption) and build up of cellulose with a high crystallinity (approximately 100%, solid state NMR). The high surface area was confirmed by calculations from atomic force microscope imaging of microfibrils from Cladophora sp. algae.

A Novel High Specific Surface Area Conducting Paper Material Composed of Polypyrrole and Cladophora Cellulose

“…The SEM micrograph suggests the presence of significant porosity and the PPy coating does not seem to impair the fine pore network typical for the Cladophora cellulose. , TEM observations of the PPy coated cellulose fibers reveal the formation of monodispersed fibers of lengths in the micrometer scale with an average fiber thickness of ∼100 nm. The cellulose fibril diameter can be measured to be ∼20 nm from open ended PPy coated fibers, which is consistent with previously reported values . Only a single cellulose core fibril per PPy coated cellulose fibers can be discerned from the TEM studies conducted on open ended fibers, where the cellulose fibril core can be observed to protrude from the center of the PPy coating, see Figure .…”

Fractal Dimension of Cellulose Powders Analyzed by Multilayer BET Adsorption of Water and Nitrogen

“…27 For the Cladophora particles, distinct filaments with a diameter of about 10-30 nm are clearly visible. The observed filament diameter coincides very well with literature values obtained by nuclear magnetic resonance (NMR) measurements 31,32 and AFM. 31,32 From the 100K× magnification on the Cladophora particle we can also guess a very porous structure where the largest pores visible seem to have a diameter of ∼100 nm.…”

Cellulose from cladophorales green algae: From environmental problem to high‐tech composite materials

“…45 The apparent (true) density of Cladophora cellulose is around 1.64 g/cm 3 , whereas that of cellulose from land plants is on the order of 1.56 g/cm 3 , as measured by He pycnometry. 27 The relatively higher apparent density of Cladophora cellulose suggests a higher degree of cellulose crystallinity, which is in accordance with results from other analytical techniques. The high degree of crystallinity of algal cellulose results in a higher inertness of cellulose and makes this type of cellulose even less susceptible to various chemical treatments than its more conventional native cellulose analogues derived from land plants.…”

“…The apparent (true) density of Cladophora cellulose is around 1.64 g/cm 3 , whereas that of cellulose from land plants is on the order of 1.56 g/cm 3 , as measured by He pycnometry 27. The relatively higher apparent density of Cladophora cellulose suggests a higher degree of cellulose crystallinity, which is in accordance with results from other analytical techniques.…”