Selection of filler particle size for maximizing the critical properties of cellulosic paper by filler pre-flocculation
Source abstract
Abstract
Abstract Filler pre-flocculation has been extensively studied in the past to increase filler content while maintaining the physical strength properties of paper. However, optical properties of paper could be negatively affected due to the filler pre-flocculation. In this work, two kinds of precipitated calcium carbonate (PCC) fillers with different particle sizes, namely PCC1 (4.2 μm) and PCC2 (7.7 μm), were used to investigate the effects of filler pre-flocculation on the strength and optical properties of paper. Results showed that pre-flocculated fillers with smaller particle size (PCC1) could improve the tensile strength of handsheets more effectively, since the tensile index was increased by 22.9 %. Meanwhile, for a given floc size, the handsheets with PCC1 flocs exhibited a better light scattering ability comparing to the ones filled with PCC2 flocs. The improved light scattering ability of handsheets filled with 24 μm PCC1 flocs compared to 24 μm flocs produced with PCC2 can be attributed to the complex micro void structure of flocs. This finding can be used as a guidance for the selection of filler particle size when using filler pre-flocculation to optimize the mechanical and optical properties of paper.
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Research context
OpenAlex topics: Advanced Cellulose Research Studies · Material Properties and Processing · Nanocomposite Films for Food Packaging
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, Key Laboratory of Paper based Functional Materials of China National Light Industry, College of Bioresources Chemical and Materials Engineering , Shaanxi University of Science & Technology , Xi’an 710021 , China
Funding
National Natural Science Foundation of China · Shaanxi University of Science and Technology
References (40)
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