We assume Mg-bearing glass as the main component of the amorphous silicate core (see Jessberger et al., 1988; Kimura et al., 2003).
The dominant phase of the crystalline Si component accompanying the small amounts of amorphous component implies the formation of the polycrystalline Si shell.
Hyaluronic acid (HA), a biopolymer, member of the family of the glycosaminoglicanes (GAGs) is one of the major natural components of the connective amorphous matrix.
Of particular importance is the accurate identification of amorphous components, which is normally achieved by well-proved and standardized procedures.
The increase in CrI of alkali-treated WHB might be due to the removal of amorphous components including lignin during the pretreatment process [41],[41].
A stretching-induced crystallization forming microfibril-like crystallites of PCL is suggested to be at the origin of the high crystalline orientation for those blends, which have a dominant proportion of amorphous components during the stretching, instead of the transformation of existing lamellae to the microfibrillar structure for stretched highly crystalline blends.
A series of narrowly distributed diblock copolymers composed of amorphous components and side-chain liquid crystalline (LC) polymer, poly (butyl acrylate -block-poly [8-(4-cyacrylate -block-polyctacrylate -block-poly-b-PCBOA), with side-chain LC block weight fraction (fw,PCBOA) ranging from 25% to 87%, were synthesized by atom transfer radical polymerization (ATRP).
The CrI of the untreated fiber, containing a large amount of amorphous components (mainly hemicelluloses and lignin), was 57.02%.
All the other pretreatments increased the cellulose crystallinity because of the removal of amorphous components such as lignin, hemicellulose, and amorphous cellulose.
Pretreatment strategies that are particularly harsh initially increase CI through removal of amorphous components, followed by subsequent dissolution of crystalline cellulose.
