CSA Z5200-17 pdf download – Cellulose nanomaterials — Blank detail specification.
1 Scope 1.1 This Standard provides guidance and a blank detail specification for cellulose nanomaterials (CNMs), for determining and listing essential properties and characteristics with reference to corresponding test methods in CSA Z5100 and other standards. CNMs in this Standard include cellulose nanocrystals (CNCs), cellulose nanofibrils (CNFs), and cellulose microfibrils (CMFs). 1.2 Numeric values for properties and characteristics in the blank detail specification are intentionally left blank and should be determined by agreement between the customer and the cellulose nanomaterial supplier. Properties and characteristics deemed by the customer and supplier as not relevant to a specific cellulose nanomaterial or application may be classified as “not applicable” or “not specified”. 1.3 This Standard does not include detail specifications for cellulose nanomaterial-based nano-enhanced or nano-enabled products. 1.4 In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application. 1.5 The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.
3 Definitions The following definitions shall apply in this Standard: Agglomerate — collection of weakly or medium strongly bound particles or aggregates or mixtures of the two where the resulting external surface area is similar to the sum of the surface areas of the individual components. Notes: 1) The forces holding an agglomerate together are weak forces, for example van der Waals forces, or simple physical entanglement. 2) Agglomerates are also termed “secondary particles” and the original source particles are termed “primary particles”. Source: ISO TS 80004-2, 3.4 Amorphous — solid structure of ions, molecules, or atoms that are oriented randomly lacking any order. Source: ISO DTS 20477 Cellulose — linear polymeric chains of β (1→4) linked D-glucopyranose units. Source: ISO DTS 20477 Cellulose nanocrystal (CNC) — nanocrystal predominantly composed of cellulose with at least one elementary fibril, containing predominantly crystalline and paracrystalline regions, with aspect ratio of usually less than 50 but usually greater than 5, not exhibiting longitudinal splits, inter-particle entanglement, or network-like structures. Notes: 1) The dimensions are typically 3-50 nm in cross-section and 100 nm to several μm in length depending on the source of the cellulose nanocrystal. 2) The aspect ratio refers to the ratio of the longest to the shortest dimension. 3) Historically cellulose nanocrystals have been called “nanocrystalline cellulose (NCC)”, whiskers such as “cellulose nanowhiskers (CNW)”, and microfibrils such as “cellulose microfibrils”; they have also been called “spheres”, “needles”, or “nanowires” based on their shape, dimensions, and morphology; other names have included “cellulose micelles”, “cellulose crystallites”, and “cellulose microcrystals”.
Cellulose nanofibril (CNF) — cellulose nanofibre composed of at least one elementary fibril, containing crystalline, paracrystalline, and amorphous regions, with aspect ratio usually greater than 10, which may contain longitudinal splits, entanglement between particles, or network-like structures. Notes: 1) The dimensions are typically 3-100 nm in cross-section and typically up to 100 μm in length. 2) The aspect ratio refers to the ratio of the longest to the shortest dimensions. 3) The terms “nanofibrillated cellulose (NFC)”, “nanofibrillar cellulose (NFC)”, “microfibrillated cellulose (MFC)”, ”microfibrillar cellulose (MFC)”, “cellulose microfibril (CMF)”, and “cellulose nanofiber (CNF)” have been used to describe cellulose nanofibrils produced by mechanical treatment of plant materials, often combined with chemical or enzymatic pre-treatment steps. 4) Cellulose nanofibrils produced from plant sources by mechanical processes usually contain hemicellulose and in some cases lignin. 5) Some cellulose nanofibrils might have functional groups on their surface as a result of the manufacturing process. 6) The term “cellulose nanoribbon” has been used to describe cellulose nanofibrils from bacterial sources. Source: ISO DTS 20477 Cellulose nanomaterial (CNM) — material composed predominantly of cellulose with any external dimension in the nanoscale, composed predominantly of cellulose, or a material having internal structure or surface structure in the nanoscale, with the internal structure or surface structure composed predominantly of cellulose. Notes: 1) The term “nanocellulose (NC)” is synonymous with “cellulose nanomaterial (CNM)” and “cellulosic nanomaterial (CNM)”. 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. Source: ISO DTS 20477 Crystalline — solid structure of ions, molecules, or atoms that are in an ordered, three-dimensional arrangement.CSA Z5200-17 pdf download.
