1. Direct utilization of cationic cellulose nanoparticles derived from maize-stalk parenchyma for intensifying mechanical properties and antibacterial activity in non-refined pulp paper.
- Author
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Wang, Xueping, Zhou, Jiali, Gao, Xin, Zhang, Heng, Tang, Xiaoning, and Peng, Lincai
- Subjects
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PAPER pulp , *CARBON dioxide mitigation , *ANTIBACTERIAL agents , *CELLULOSE , *WOOD-pulp , *EUCALYPTUS - Abstract
In recent years, an increasing focus has been placed on the mitigation of carbon dioxide emissions, underscoring the significance of the sustainable energy-conservation industry as a prominent and consequential field of development. As an energy-intensive procedure within the papermaking sector, the process of pulp-fiber beating necessitates an imperative exploration of alternative approaches aimed at mitigating energy consumption. This study has synthesized renewable cationic cellulose nanoparticles (CCNPs) extracted from the parenchymal cells of maize stalk pith. The objective is to demonstrate their viability as a reinforcing additive for paper sheets, thereby reducing the reliance on conventional beating processes. The results showed that CCNPs were prone to augment the physical strength of bleached papers, compared with unbleached papers. The inclusion of 9% CCNPs led to a remarkable 163.5% and 140.0% increase in tear and tensile indexes for bleached Eucalyptus paper, respectively. Incorporating CCNPs into non-refined paper yields physical traits akin to wood pulp paper beaten over 40 °SR. The CCNP-strengthened handsheets exhibited superior tensile and tear index in comparison to commercial dry strength additives such as cationic starch (CS) and cationic polyacrylamide (CPAM). Additionally, at 80 μg/ml concentration, E-B-9 displayed significant bactericidal effectiveness, achieving an impressive 97% reduction in Escherichia coli. This notable outcome is attributed to the presence of quaternary ammonium salt moieties in the formulation. This investigation introduces a promising approach where in the utilization of CCNP as an innovative multifunctional agent for paper holds the potential to enhance paper performance and concurrently reduce production costs. [Display omitted] ● The agro-waste CCNP acted well as a paper multifunctional addictive. ● The CCNPs promoted physical strengths of the paper from non-refined wood pulps. ● 9% CCNP-added sheet has mechanical properties akin to that from the 40°SR paper. ● 80 μg/ml of the bleached hardwood showed 97% bactericidal efficacy against E. coli. ● The improvement of CCNPs applied to bleached pulps is superior to unbleached pulps. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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