Development of Flexible Calcium Carbonate for Papermaking Filler

Han, Jung Soo; Jung, Sun Young; Kang, Dong Suk; Seo, Yung Bum

doi:10.1021/acssuschemeng.0c01593

Cited by 30 publications

(34 citation statements)

References 20 publications

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“…Han et al (2020) 18 presented a new type of filler, FCC, that simultaneously allowed the paper higher bulk and higher tensile strength than GCC. FCC also resulted better smoothness and much higher stiffness in paper materials before calendering than GCC.…”

Section: Resultsmentioning

confidence: 99%

Effect of Calendering on the Properties of Paper Containing Flexible Calcium Carbonate with a Cellulose Nanofibril Core

2022

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Flexible calcium carbonate (FCC) was prepared by attaching a large amount of calcium carbonate to cellulose nanofibrils (CNFs) by an in situ calcium carbonate formation method. FCC normally consists of CNFs and calcium carbonate at a 1:40 ratio by weight. FCC-containing papers resulted in a higher bulk, higher stiffness, and higher tensile strength than a commercialized ground calcium carbonate (GCC)-containing papers at the same ash content. However, there were speculations that calendering on FCC-containing paper might cause a large drop in bulk and no increase in smoothness due to the larger size of the FCC (avg. dia. 20–30 μm) than the GCC (dia. 2 μm). FCC-containing paper was shown to respond to the calendering process very effectively to increase the Bekk smoothness and to maintain high bulk. Furthermore, FCC-containing paper was so effective in increasing smoothness that it might need less calendering pressure to match the smoothness of GCC-containing paper. If so, there could be potential to increase the bulk and stiffness further in FCC-containing papers at the same smoothness as GCC-containing paper by applying reduced calendering pressure.

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Section: Resultsmentioning

confidence: 99%

Effect of Calendering on the Properties of Paper Containing Flexible Calcium Carbonate with a Cellulose Nanofibril Core

2022

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“…It is easy to know that in the composite materials explored in this article, whether it is COS‐50, COC‐50 or COs‐50, the highest content in it are CaCO 3 and COPU structure. On the one hand, the application of CaCO 3 is very common, such as papermaking filler, painting, and so forth, which are usually very stable and can exist in the environment for a long time, but due to the presence of CO 3 2− , the acid resistance is poor 56 . Polyurethane is also very versatile, such as polyurethane foam, automotive coatings, and so forth, indicating that its environmental durability is also good.…”

Section: Resultsmentioning

confidence: 99%

“…, the acid resistance is poor. 56 Polyurethane is also very versatile, such as polyurethane foam, automotive coatings, and so forth, indicating that its environmental durability is also good. However, the durability of COPU is compromised due to the existence of C C bonds in the cross-linked macromolecules.…”

Section: −mentioning

confidence: 99%

Effect of special structure of clam shell powder on structure and properties of castor oil‐based composites

Zhang

Weng

Koranteng

et al. 2020

J of Applied Polymer Sci

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Castor oil (CO) is an environmentally friendly renewable green resource and ideal alternative to petroleum resources. The preparation of high strength and high toughness castor oil-based polyurethane prepolymer (COPU) composites has significant applications such as supporting material and engineering plastic sheet. In this study, unmodified clam shell powder (CSP) with a unique CaCO 3-proteoglycan structure was used as a filler to prepare compatible reinforced COPU composite materials. Investigation of the mechanical properties revealed that the elastic modulus of the composite COPU reinforced with 50 wt% of CSP had increased to 5859.0 ± 8.4 MPa representing 187.77% to obtain stiffer and stronger material over pure COPU (2036.6 ± 196.9 MPa). Moreover, the scanning electron microscopy, thermogravimetric analysis and contact angle results demonstrated that the reinforced COPU composites have better compatibility, thermal stability, and water resistance than pure COPU. This work will promote the application prospects of CO-based polyurethane.

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“…Paper has lasted for two thousand years in human history. It’s supposed that within the foreseeable hundreds of years, paper will still be one of the important medium for the record of human civilization, and will play an increasing role in other scientific research fields ( Han et al., 2020 ; Hasan and Walia, 2021 ; Jain and Gupta, 2021 ; Zhong et al., 2019 ).…”

Section: Development Of Papermentioning

confidence: 99%