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Asynthesis of Cationic Soy Protein Isolate(CSPI) and the Application of CMC-CSPI Binary System as Strengthening Additives in Deinked Pulp
  
DOI：10.11980/j.issn.0254-508X.2015.09.003
Key Words:cationic soybean protein isolate  carboxymethylcellulose  binary strengthening system
Fund Project:国家科技支撑计划课题(2013BAC01B03)。
Author NameAffiliation
袁明昆1 1.大连工业大学轻工与化学工程学院, 辽宁大连，116034 
丁子栋2 2.大连市供水有限公司，辽宁大连，116021 
周景辉1,* 1.大连工业大学轻工与化学工程学院, 辽宁大连，116034 
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Abstract:The synergetic effect of cationic soy protein isolate (CSPI) and carboxymethyl cellulose (CMC) as the strengthening agents in papermaking was studied in this study. The parameters, including adding order or molar ratio of CSPI and CMC, were controlled to evaluate the effect of this binary strengthening system on the physical properties of the paper. It was found that CMC and CSPI mixed together on 0.5∶2.5 mass ratio and was used as strengthening binary system had a better strengthening effect than that of CMC or CSPI single system. Using CMC-CSPI binary system as strengthening additives the pulp drainage and fines retention were better than using CMC single system, but not as good as using CSPI single system.
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