In-situ Preparation of Nano-calcium Carbonate/Cellulose Fiber Composite and Its Application in Fluff Pulp

Abstract

Calcium carbonate/cellulose fiber composites combining natural polymers and inorganic particles are promising materials for preparing fluff pulp. In this study, calcium carbonate (CaCO 3) particles were in-situ precipitated on cellulose fiber surfaces to decrease the level of hydrogen bonding. The results showed that nano CaCO 3 particles precipitated and dispersed well on the fiber surface. The fluff pulp made from cellulose/CaCO 3 modified fibers exhibited high effectiveness in the dry defibration process and good adsorption capacity due to the weak hydrogen bonding. The burst index of the handsheets decreased 31% (based on the ash content of 1.48 wt. %) without compromising the adsorption capacity of the fluff pulp.

Development of Flexible Calcium Carbonate for Papermaking Filler

“…Saghavaz et al used dimethyl carbonate in the presence of calcium chloride to form calcium carbonate on the cellulosic fines for the preparation of composite fillers and reported similar results . There were novel studies about cellulose/calcium carbonate composite for biomedical application and specialty paper products. − Dalas et al showed that calcium carbonate had high affinity to cellulose and calcite calcium carbonate was deposited preferentially on the cellulose surface from supersaturated calcium carbonate solution …”

Preparation and characterization of regenerated cellulose biocomposite film filled with calcium carbonate by in situ precipitation

“…Only the (104) plane of calcite was found in the XRD pattern. Other characteristic peaks of calcite were missing, which may be due to the low crystallinity of calcite in the composite (Niu et al 2014;Xu et al 2017). Overall, XRD results indicated the successful in-situ precipitation of calcite into the RC film.…”

“…As a renewable, biodegradable, and biocompatible polymer, cellulose offers tremendous opportunities for different products, including paper and paperboard, textiles, and drug tablets (Wang et al 2018(Wang et al , 2019Zhu et al 2020a,b). Although it is generally considered as abundant and low-cost biomass, the price of the cellulose pulp is still high compared with inorganic fillers (Laukala et al 2017;Xu et al 2017). Inorganic fillers, such as calcium carbonate, are used in nearly every paper and paperboard product to save virgin pulp, dry energy, and production costs.…”

Manufacturing of Fluff Pulp Using Different Pulp Sources and Bentonite on an Industrial Scale for Absorbent Hygienic Products

“…A polypropylene top sheet that is in direct contact with the baby’s skin and is responsible for receiving fluids, an acquisition distribution layer (ADL), which is mostly colored and its responsibility is to distribute fluids into the diaper, the absorption mass, which is a mixture of fluff pulp and super absorbent polymer (SAP), a back-sheet layer, which is mostly a breathable type and made of polyethylene and its responsibility is to prevent leakage of fluids and, finally, a fastening system, such as tape, frontal tape, glue and others [ 1 ]. Fluff pulp, which forms approximately 40% of the total weight of classic diapers, leads to increased absorption speed in diapers and also contributes to the absorption process [ 2 ]. In sanitary napkins, fluff pulp forms more than 70% of the total weight of a pad and its responsibility is to distribute the liquids along the length of the pad.…”

“…On the other hand, fluff pulp is important in terms of some aspects, such as supplying, transportation, warehousing and logistics. A desirable fluff pulp should provide some specific properties, including appropriate bulk properties, high absorption capacity, low absorption time, high tensile strength and high brightness [ 2 , 3 ]. The fiber length is another important property in the fluff pulp.…”