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Preparation of Oxidized Starch with NaClO/Cellulose Nanocrystals and the Properties of Its Composite Film
  
DOI：10.11980/j.issn.0254-508X.2019.05.004
Key Words:starch  cellulose nanocrystals  oxidation  composite film  properties
Fund Project:国家重点研发计划项目（2017YFB0307900）；国家自然科学基金项目（31670595，31770628）；泰山学者工程项目；山东省高等学校科技计划项目J18KA091。
Author NameAffiliation
LIN Zhaoyun 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， Shangdong Province， 250353 
XIA Yuanyuan 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， Shangdong Province， 250353 
YANG Guihua* 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， Shangdong Province， 250353 
CHEN Jiachuan 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， Shangdong Province， 250353 
LIU Huanhuan 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， Shangdong Province， 250353 
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Abstract:Oxidized starch（OS） was prepared by using NaClO oxidation system with adding cellulose nanocrystals（CNC）, and the OS was further blended with polyvinyl alcohol （PVA）/glycerol （GL） to prepare composite film when the mese ratio was OS∶PVA∶GL=20∶8∶5.The properties of OS and composite film were characterized.The results showed that the carboxyl content of the OS increased to 1.1% and the transparency of the composite film reached the highest value of 0.66 when CNC addition was 0.5%， the transparency and thermal stability of the composite film reached the optimum level; and the tensile stress of the composite film reached 11.89 MPa with 3.0% CNC addition.
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