Role of additives to improve adsorption of xylan on precipitated calcium carbonate

Ghosh, Indrasena; Sharma, Chhaya; Tandon, Rita

doi:10.1007/s10570-018-1666-x

Cited by 6 publications

(3 citation statements)

References 56 publications

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“…The principle is based on static light scattering Mie theory. Approximately, 0.1 g of fillers was dispersed in 100 ml distilled water and ultra-sonicated for at least 30 min prior to zeta potential measurements by ZetaPlus zeta potential analyzer (Brookhaven, 205 H2oltsville, NY, USA) [26]. Image analysis of flocs was also carried out by the optical microscope (Motic B1 Series).…”

Section: Characterization Of Fillersmentioning

confidence: 99%

Structural evaluation of chitosan-modified precipitated calcium carbonate composite fillers for papermaking applications

2020

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Industries from different business sectors are facing challenges against global competitions for the development of sustainable and renewable products in the twenty-first century. Likewise, constant effort from pulp and paper manufacturers in minimizing paper cost with better quality in the active field of filler modification technology is much appreciated. In the present study, chitosan has been explored as a surface modifier alternative to conventional starch for precipitated calcium carbonate (PCC) to design chitosan/PCC composite filler. Two different dissolution mediums, hydrochloric and acetic acid, for chitosan have been seen to affect PCC crystals. Commercial PCC comprises mostly aragonite polymorphs along with some calcite crystals as implied by FTIR, XRD and FE-SEM images. It is interesting to note that surface treatment of PCC with 4.5% chitosan can successfully induce crystal transformation of PCC from aragonite to calcite polymorphs. Further, the deposition of chitosan was estimated from TOC measurements and the presence of deposited amount was validated from TGA analysis. Moreover, the introduction of chitosan (dissolved in HCl) to PCC dispersion was found to raise the zeta potential from − 14.43 to − 11.3 mv. Finally, the tensile strength of handsheets increased by 8.2% with 20% enhancement in ash with chitosan/PCC composite filler compared to the unmodified PCC. Therefore, bio-based PCC composites which proved to be promising for the development of high ash paper without compromising essential properties may result in saving wood pulp and production cost. Thus, implementing such seafood waste as a value-added additive is beneficial both to the industries and the environment because of its biodegradability and eco-friendliness.

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Section: Characterization Of Fillersmentioning

confidence: 99%

Structural evaluation of chitosan-modified precipitated calcium carbonate composite fillers for papermaking applications

2020

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“…CH application in different processes of paper industry like wet‐end of papermaking, surface sizing, filler modification and paper coating was reported earlier 37,42,51–55 . CH was also found to be effective filler modifier in wet end of papermaking 11,28 . Study was also carried out with Chitosan acetate (CH.A) films for Transdermal delivery of Propranolol Hydrochloride 56 .…”

Section: Introductionmentioning

confidence: 99%

“…37,42,[51][52][53][54][55] CH was also found to be effective filler modifier in wet end of papermaking. 11,28 Study was also carried out with Chitosan acetate (CH.A) films for Transdermal delivery of Propranolol Hydrochloride. 56 Preparation methodology of CH.A from CH is given in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Application of polysaccharide based modified ground calcium carbonate in wet‐end of papermaking

Chatterjee,

Negi,

Janbade

et al. 2023

J of Applied Polymer Sci

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To enhance the ash in paper without reducing its strength property, ground calcium carbonate (GCC) filler was modified using polysaccharide prior to its addition at wet‐end of papermaking. Till now, modification of GCC filler using chitosan acetate (CH.A) is not explored. The novelty lies in showing the effect of CH.A as GCC filler modifier and its application in papermaking. The results showed that ash of paper get increased by around 18%, 53% and 63% after adding GCC modified using cationic starch (C.S) @ 20 kg/t of GCC, CH.A @ 5 kg/t of GCC and CH.A @ 10 kg/t of GCC respectively, in comparison to that attained by paper using unmodified GCC at the same dose at wet‐end of papermaking. The breaking length, burst factor and tear factor of paper having 11% ash (made using unmodified GCC) was found to be 2485 m, 21.73 and 47.63, respectively. The paper having 18% ash (made using GCC modified by CH.A 10 kg/t of GCC) showed breaking length, burst factor and tear factor as 2364 m, 22.24 and 46.72, respectively. This approach of using CH.A in papermaking will help the papermaker to improve profit and quality of paper.

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Effect of mechanical−chemical modification on adsorption of beryllium by calcite

Zhao

Hao

et al. 2023

Environ Sci Pollut Res

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Role of additives to improve adsorption of xylan on precipitated calcium carbonate

Cited by 6 publications

References 56 publications

Structural evaluation of chitosan-modified precipitated calcium carbonate composite fillers for papermaking applications

Structural evaluation of chitosan-modified precipitated calcium carbonate composite fillers for papermaking applications

Application of polysaccharide based modified ground calcium carbonate in wet‐end of papermaking

Effect of mechanical−chemical modification on adsorption of beryllium by calcite

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