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Study on the ASA Pickering Emulsion Stabilized with Fluorescent Carbon Quantum Dots-Laponite
  
DOI：10.11980/j.issn.0254-508X.2019.01.005
Key Words:carbonquantum dot  ASA  paper sizing  Pickering emulsion  fluorescence
Fund Project:制浆造纸工程国家重点实验室开放基金资助项目（编号：201520）；国家自然科学基金项目（编号： 21406112、31270625）。
Author NameAffiliation
HOU Fuqing1 1. 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 
LIU Jing1 1. 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 
WANG Xiaoxiao1 1. 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 
DAI Rengang1 1. 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 
CUI Jiedong1 1. 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 
GUO Wenyan1 1. 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 
LIU Xia1 1. 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 
WANG Huili1 1. 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
2. State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 
YU Dehai1，2，* 1. 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
2. State Key Lab of Pulp and Paper Engineering， South China University of Technology， Guangzhou， Guangdong Province， 510640 
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Abstract:The effects of fluorescent carbon quantum dots（CDs） and laponite on the properties of alkenyl succinic anhydride（ASA） emulsions were investigated by synergistic emulsification of ASA Pickering emulsion， a novel ASA paper sizing agent emulsion， with CDs and laponite. The results showed that the contact angle of the CDs-laponite particles decreased with the increase of the amount of CDs or laponite， the ASA Pickering emulsion emulsified by 0.050 g laponite and 1.000 g CDs had the best stability and the smallest emulsion particle size， and all the ASA emulsions prepared were oil-in-water Pickering emulsion. Confocal microscope showed that the CDs-laponite particles were adsorbed at the interface between oil and water and formed an interface particle film， which improved the stability of the emulsion. The paper sizing degree was 73 s when the dosage of ASA was 0.2%（based on dry pulp， wt%） with 1%（based on ASA， wt%） of CDs-laponite. Increasing the amount of CDs-laponite particle， both the paper sizing degree and the hydrolytic stability of ASA were improved．
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