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Research on Preparation of Barrier Long Fiber Tissue Paper Coated with Modified Cellulose Nanofibril
Received:August 11, 2020  
DOI：10.11980/j.issn.0254-508X.2020.11.002
Key Words:cellulose nanofibril （CNF）  carboxymethyl modification  barrier properties  hydrophobicity  tissue paper
Fund Project:山东省重点研发计划重大科技创新工程项目(2019JZZY010304)；国家自然科学基金(31679590)；山东省科技计划项目(2016GGX102014)；山东省科技计划项目(ZR201702220356)；山东省科技计划项目(J16LE15)。
Author NameAffiliationPostcode
LI Ziyuan State Key Lab of Bio-based Material and Green Papermaking， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353 250353
ZHANG Jinzhu Shandong Shengquan Group Co.， Ltd.， Ji’nan，Shandong Province，250200 250200
WANG Penghui Shandong Shengquan Group Co.， Ltd.， Ji’nan，Shandong Province，250200 250200
DING Qijun State Key Lab of Bio-based Material and Green Papermaking， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353 250353
LI Xia State Key Lab of Bio-based Material and Green Papermaking， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353 250353
JIANG Yifei State Key Lab of Bio-based Material and Green Papermaking， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353 250353
HAN Wenjia State Key Lab of Bio-based Material and Green Papermaking， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353 250353
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Abstract:In this paper， long-fiber tissue paper with high air permeability and high wet strength was used as the substrate， high-strength， high-transmittance， and soft long-fiber tissue paper with high barrier properties was prepared by coating modified cellulose nanomaterial. The effects of cellulose nanofibril （CNF）， carboxymethylated modified cellulose nanofibril （C-CNF） and AKD dosages on the tensile strength air permeability and surface hydrophobicity of the coated paper were compared. The results showed that C-CNF exhibited better performance than CNF. When its coating concentration was 1.0%（coating amount 1.6 g/m2）， the tensile index was 27.3 N·m/g， increased 46.0% compared to that of AKD coated paper. The contact angle between water and paper surface reached 121.5°， which was more hydrophobic than CNF coating， and compared to the sample coated with AKD emulsion，the hydrophobicity increased by 60.9%， while the air permeability was only 21.1 μm/（Pa·s）， which was further lower than that of CNF coated paper sample and 60% lower than the sample coated with AKD emulsion， the water vapor permeablity was 1.95×10-11 g·m/（m2·s·Pa）， 52% of that coated with AKD.The prepared paper had a good hydrophobicity barrier performance.
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