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Preparation of Nanocrystalline Cellulose -NaClO Oxidized Starch and Its Application in Paper Sizing
  
DOI:10.11980/j.issn.0254-508X.2018.11.003
Key Words:nanocrystalline cellulose  oxidized starch  paper properties
Fund Project:国家重点研发项目(2017YFB0307900);国家自然科学基金(31770628);山东省重点研发计划重大科技专项(2016CYJS07A01);泰山学者工程。
Author NameAffiliation
XIA Yuan-yuan State Key Lab of Bio-based Materials and Green Papermaking /Key Lab of Pulp & Paper Science and Technology of Education Ministry of China, Qilu University of Technology (Shandong Academy of Sciences), Ji′nan, Shandong Province, 250353 
LIN Zhao-yun State Key Lab of Bio-based Materials and Green Papermaking /Key Lab of Pulp & Paper Science and Technology of Education Ministry of China, Qilu University of Technology (Shandong Academy of Sciences), Ji′nan, Shandong Province, 250353 
YANG Gui-hua* State Key Lab of Bio-based Materials and Green Papermaking /Key Lab of Pulp & Paper Science and Technology of Education Ministry of China, Qilu University of Technology (Shandong Academy of Sciences), Ji′nan, Shandong Province, 250353 
PENG Jian-min State Key Lab of Bio-based Materials and Green Papermaking /Key Lab of Pulp & Paper Science and Technology of Education Ministry of China, Qilu University of Technology (Shandong Academy of Sciences), Ji′nan, Shandong Province, 250353 
CHEN Jia-chuan* State Key Lab of Bio-based Materials and Green Papermaking /Key Lab of Pulp & Paper Science and Technology of Education Ministry of China, Qilu University of Technology (Shandong Academy of Sciences), Ji′nan, Shandong Province, 250353 
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Abstract:In this paper, oxidized starch was prepared by adding nanocrystalline cellulose ( NCC ) and NaClO into 30% starch emulsion at 50 ℃,and the influence of NCC dosage on starch oxidation process was analyzed. The oxidized starche was characterized by infrared spectroscopy(FT-IR), scanning electron microscopy(SEM) and x-ray diffraction(XRD). Then the oxidized starche was used as internal and surface sizing agents in papermaking process. The results showed that the addition of NCC could effectively improve the oxidation degree of corn starch. The carboxyl content of oxidized starch reached 1.10% with NCC dosage of 0.5 wt%. The oxidized starch could improve the paper properties when the NCC oxidized starch surface sizing amount was 2 g/m2, the surface sized paper contact angle reached 82.5°, and the paper strength properties were improved obviously using the NCC oxidized starch as internal sizing agent with the dosage of 0.75 wt%.
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