Isolation of cellulose nanocrystals from grain straws and their use for the preparation of carboxymethyl cellulose-based nanocomposite films

Physiology and quality of 'Tahiti' acid lime coated with nanocellulose-based nanocomposites

“…Dn the other hand, fruits coated with N-PEC showed a respiratory rate (12.01 mg CD 2 kg -1 h -1 ) also statistically similar to the fruits of the control, but it was significantly lower than the fruits coated with PEC (14.93 mg CD 2 kg -1 h -1 ), suggesting that the N-PEC nanocomposite was able to form an D 2 diffusion barrier more efficient than its pure PEC polymer. Nanocomposites reinforced with high level of crystallinity, higher than 60%, can form coatings capable of guaranteeing low levels of D 2 permeability (Dun & Rhim, 2016). This effect has been attributed to the formation of a rigid linked-hydrogen network (Flauzino et al, 2016), which seems to have occurred for the coating of the N-PEC nanocomposite, since the crystallinity index of the NCs used in N-PEC was 89.1%.…”

“…A recent technique, based on the addition of nanomaterials to form reinforced biopolymer nanocomposite coatings has been the focus of several investigations (Dun & Rhim, 2016;Deng et al, 2017;Li et al, 2017;Xin et al, 2017). On fact, nanocomposite coatings generally have better mechanical, thermal, optical and physicochemical properties compared to pure polymer coatings (Ma et al, 2017).…”

“…On fact, nanocomposite coatings generally have better mechanical, thermal, optical and physicochemical properties compared to pure polymer coatings (Ma et al, 2017). Among the known nanomaterials, cellulose nanocrystals have been used to improve the properties of biopolymers (Dun & Rhim, 2016), since they have characteristics such as high crystallinity index and high resistance (Nagalakshmaiah et al, 2016). Cellulose nanocrystals are needle-shaped, have a size equal to or less than 100 nm, have a large specific surface area, high modulus of elasticity and great aspect ratio, and the processes for their isolation are based on acid hydrolysis to break down the amorphous domains of the cellulosic fibers (Flauzino et al, 2016).…”

A wheat straw cellulose based semi-IPN hydrogel reactor for metal nanoparticles preparation and catalytic reduction of 4-nitrophenol

“…cellulose-g-poly(acrylic acid)/poly(vinyl alcohol) semi-IPN hydrogel (WSC-g-PAA/PVA), which possessed good gel mechanical strength and swelling capacity, presented excellent properties in water retention and metal ions adsorption and separation. [21][22][23] So, in this study, we use wheat straw cellulose as skeleton to prepared three-dimensional network structure (hydrogel). The hydrogel worked as a carrier to x metal nanoparticles and the hydrogel-M (M: metal (Cu or Ni)) composites was applied to reduce 4-NP to 4-AP.…”

Influence of Hydrolysis Conditions on Characteristics of Nanocrystalline Cellulose Extracted from Ramie Fibers by Hydrochloric Acid Hydrolysis

“…Moreover, NCC has a good ordered crystalline structure due to the amorphous zone of cellulose is dissolved during processing The common plants used for NCC extraction are wood bers, cotton, sugar cane, wheat straw, hemp, sisal, jute, coir, and ax bers [Chen et al 2011; Bledzki and Gassan 1999]. The obtained NCC from the natural biopolymer materials is renewable, environmentally friendly, bio-degradable, non-toxic, and extremely abundant in the earth [Oun and Rhim 2016;Sun et al 2018]. Ramie ber is one of the natural biopolymers that has a higher tensile strength compared to sisal, jute, coir, ax, and cotton.…”