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CSA Z5300:19 Cellulose filaments (CF) — Preparing handsheets for physical tests. 3 Definitions The following definitions shall apply in this Standard: Basis weight (grammage) — mass of a unit area of paper, board or handsheet, expressed in grams per square metre. Source: Modified from ISO 536. Cellulose filament (CF) — individual cellulose fibril composed of at least one elementary fibril, containing crystalline, paracrystalline, and amorphous regions, and having a flexible ribbon-like structure with a very high aspect ratio of at least 200, and usually over 500. Notes: 1) The cross-sectional dimensions (thickness and width) are typically 30 to 500 nm and the average length is typically over 100 µm. 2) The aspect ratio refers to the ratio of the length to the width. 3) CF is typically produced using mechanical refining action on high consistency wood pulps without chemical or enzymatic pre-treatment. 4) CF is a type of cellulose nanomaterial, as it contains a significant fraction of material having at least one dimension in the nanoscale (1 to 100 nm). Cellulose microfibril (CMF) — cellulose fibril composed of at least one elementary fibril, containing crystalline, paracrystalline, and amorphous regions, with aspect ratio usually greater than 10 and under 150. Notes: 1) The cross-sectional dimensions are typically larger than 100 nm and the length is typically up to 100 μm. 2) The aspect ratio refers to the ratio of the length to the width. 3) Some CMF can have a flake- or plate-like morphology. 4) Owing to large variations in the manufacturing processes used to produce them, material designated as CMF can contain a certain (small) fraction of CNF. Notes: 1) The terms nanocellulose and cellulosic nanomaterial are synonymous with cellulose nanomaterial. 2) Some cellulose nanomaterials can be composed of chemically modified cellulose. 3) This generic term is inclusive of cellulose nano-object and cellulose nanostructured material. 4) In this Standard, the term cellulose nanomaterial (CNM) refers to materials described by the first clause of this definition (“material composed predominantly of cellulose, with any external dimension in the nanoscale”). Source: Modified from ISO/TS 20477. Consistency — mass or weight percentage of oven-dry (o.d.) fibre in a stock or suspension Source: Modified from Smook (2001). CSA Z5300 pdf download.

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