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Preparation of Fluorescent Emulsion by Reactive Emulsifier and Its Application in Papermaking
Received:October 22, 2021  
DOI：10.11980/j.issn.0254-508X.2022.04.011
Key Words:high yield pulp  reactive emulsifier  emulsion  yellowing inhibition
Fund Project:国家自然科学基金项目（31670596）；陕西省轻化工助剂重点实验室开放基金（13SJ019）；陕西省高校科协青年人才托举计划项目（20200611）；陕西省科技厅自然科学基础研究计划项目（2021JQ-826）。
Author NameAffiliationPostcode
WANG Zhe Shaanxi Key Lab of Chemical Additives for Industry， Shaanxi University of Science & Technology， Xi'an， Shaanxi Province， 710021 710021
ZHANG Guanghua* Shaanxi Key Lab of Chemical Additives for Industry， Shaanxi University of Science & Technology， Xi'an， Shaanxi Province， 710021 710021
GUO Mingyuan College of Chemistry and Materials Science， Weinan Normal University， Weinan， Shaanxi Province， 714099 714099
NI Meile Shaanxi Key Lab of Chemical Additives for Industry， Shaanxi University of Science & Technology， Xi'an， Shaanxi Province， 710021 710021
HAN Xiaoqian Shaanxi Key Lab of Chemical Additives for Industry， Shaanxi University of Science & Technology， Xi'an， Shaanxi Province， 710021 710021
TONG Xin Shaanxi Key Lab of Chemical Additives for Industry， Shaanxi University of Science & Technology， Xi'an， Shaanxi Province， 710021 710021
FENG Pengchao Shaanxi Key Lab of Chemical Additives for Industry， Shaanxi University of Science & Technology， Xi'an， Shaanxi Province， 710021 710021
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Abstract:A fluorescent whitening monomers （FBs） were prepared by introducing taurine and N-hydroxymethyl acrylamide into 4，4-diamino-2，2-disulfonic acid stilbene （DSD acid） in turn with cyanuric trichloride as bridging agent. FBs， styrene，dimethyldiallylammonium chloride （DMDAAC） and reactive emulsifiers （DNS-86 and ANPEO10） were copolymerized to prepare two fluorescent emulsions （E1 and E2）， which were applied to paper coating.The results showed that E1 and E2 had good stability and uniform particle size distribution. Compared with the control paper， the initial whiteness of paper coated with E1 and E2 increased by 20.02 % and 18.86 %， the tensile strength increased by 2.35 kN/m and 0.98 kN/m， the tearing strength increased by 5.65 mN·m2/g and 2.75 mN·m2/g after E1 and E2 were coated on paper surface respectively， the PC value decreased by 2.21 and 1.61 after 48 h of UV aging. It was indicated that both E1 and E2 could significantly improve the whiteness and mechanical properties of paper， inhibit the yellowing of paper， and the effect of E1 was better.
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