Selective addition of C-PVAm to improve dry strength of TMP mixed tissue paper
Source abstract
Abstract
Abstract During the manufacture of low basis weight tissue paper, it is difficult to efficiently use the dry strength agent (DSA) because a large amount of DSA adsorbed fines releases in forming roll by centrifugal forces. In this study, cationic polyvinylamine (C-PVAm) was used as a DSA in an environment where the retention of fines was weak. Addition of C-PVAm to the thermomechanical pulp (TMP) or TMP mixed with softwood bleached kraft pulp (SwBKP) improved the turbidity of filtrate from sheet former, however, the strength of handsheet paper was similar to that without C-PVAm. When C-PVAm was selectively added to SwBKP as much as 4 %, the tensile index could be improved by approximately 10.6 % without changing the retention of fines. In addition, C-PVAm added before the beating of SwBKP showed better results than C-PVAm added after the beating in terms of fines retention, tensile index, and formation. In particular, the tensile index was improved about 7.7 % by adding of C-PVAm 4 % as is before beating of SwBKP. Consequently, it was found that C-PVAm with a high reaction rate can be added before beating of SwBKP to improve the physical strength.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Advanced Cellulose Research Studies · Natural Fiber Reinforced Composites · Material Properties and Processing
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Wood Chemistry Division , 65585 National Institute of Forest Science , Seoul , , Republic of Korea
Div. of Forest Material Science & Engineering, College of Forest and Environmental Sciences , 34962 Kangwon National University , Chuncheon , , Republic of Korea
References (17)
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