Stabilizing alkenyl succinic anhydride (ASA) emulsions with starch nanocrystals and fluorescent carbon dots

Bei Gong; Wenxia Liu; Xueshuai Chen; Hua Tan; Xiuli Zhang; Huili Wang; Dehai Yu; Guodong Li; Zhaoping Song

doi:10.1016/j.carbpol.2017.02.007

Stabilizing alkenyl succinic anhydride (ASA) emulsions with starch nanocrystals and fluorescent carbon dots

Carbohydr Polym. 2017 Jun 1:165:13-21. doi: 10.1016/j.carbpol.2017.02.007. Epub 2017 Feb 7.

Authors

Bei Gong¹, Wenxia Liu², Xueshuai Chen¹, Hua Tan¹, Xiuli Zhang¹, Huili Wang¹, Dehai Yu¹, Guodong Li¹, Zhaoping Song¹

Affiliations

¹ Key Laboratory of Pulp & Paper Science and Technology (Qilu University of Technology), Ministry of Education, Jinan, Shandong, 250353, China.
² Key Laboratory of Pulp & Paper Science and Technology (Qilu University of Technology), Ministry of Education, Jinan, Shandong, 250353, China. Electronic address: liuwenxia@qlu.edu.cn.

PMID: 28363532
DOI: 10.1016/j.carbpol.2017.02.007

Abstract

Stabilizing alkenyl succinic anhydride (ASA) emulsions using fine particles instead of cationic starch have attracted much attention in recent years. Herein, starch nanocrystals (SNCs) made from maize starch by H₂SO₄ hydrolysis were used to co-stabilize ASA emulsions with fluorescent carbon dots (CDs) made hydrothermally from gelatin. The introduction of CDs can significantly enhance the stability and reduce the droplet size of SNC-stabilized ASA-in-water emulsions. Consequently, the sizing performance of the SNC-stabilized ASA emulsion is significantly improved by increasing the CD-to-SNC mass ratio. SNC and CD co-stabilized ASA emulsions show much better sizing performance than starch and CD co-stabilized ASA emulsions, achieving their best sizing performance at a CD-to-SNC mass ratio of 80%. Meanwhile, the morphology of SNC/starch and CD co-stabilized ASA emulsions can be traced under UV excitation.

Keywords: Alkenyl succinic anhydride; Aluminum sulfate (PubChem CID: 24850); Carbon dots; Cellulose (PubChem CID: 3084047); Corn starch (PubChem CID: 439341); Emulsions; Gelatin (PubChem CID: 441411); Octadecenylsuccinic anhydride (PubChem CID: 120045); Paper sizing; Starch nanocrystals; Sulfuric acid (PubChem CID:1118).