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1、第*期马静等:大豆分离蛋白纸张抗水表面施胶剂制备及性能·7·大豆分离蛋白纸张抗水表面施胶剂制备及性能马静1,2,3，陈利维1,2，汪恒1，张家勇1，向文静1，由耀辉1,2,3*(1.内江师范学院化学化工学院，四川内江641100；2.内江师范学院果类废弃物资源化四川省高等学校重点实验室，四川内江641100;3.农业废弃物资源化院士工作站，四川内江641100)摘要：以大豆分离蛋白(SPI)为原料、烯基琥珀酸酐(ASA)为疏水改性剂，控制ASA与SPI伯氨基的摩尔比〔n(ASA)/n(SPI-NH2)〕合成了4种不同酰化度的
2、疏水大豆分离蛋白ASAx-SPI(x表示摩尔比，x=0.5，1，1.5和2)。通过伯氨基含量、FTIR、UV-Vis、荧光光谱、疏水指数对ASAx-SPI的结构和性能进行了表征。结果表明：长链疏水基团成功引入到SPI骨架上，ASAx-SPI的酰化度和疏水指数随着x的增加而增大，当x达到1.5后趋于稳定。ASA1.5-SPI的施胶量为0.77g/m2时，施胶纸的初始水接触角可达132°，水滴保留时间可达53min。XPS和SEM分析结果显示：ASA1.5-SPI在纸纤维表面形成一层粗糙的疏水薄膜。此外，纸张力学性能测试表明：A
3、SA1.5-SPI施胶纸的抗张强度由未施胶纸的0.6kN/m提升至0.67kN/m。关键词：大豆分离蛋白；烯基琥珀酸酐;施胶剂;抗水性;力学性能中图分类号：TS727+.2文献标识码：A文章编号：1003-5214(2018)02-0000-00PreparationandPropertiesofSoyIsolateProteinBasedWater-resistant SurfaceSizingAgentsforPapermakingMAJing1,2,3,CHENLi-wei1,2,WANGHeng1,ZHANGJia-
4、yong1,XIANGWen-jing1,YOUYao-hui1,2,3*(1.CollegeofChemistryandChemicalEngineering,NeijiangNormalUniversity,Neijiang641100,Sichuan,China;2.KeyLaboratoryofFruitWasteTreatmentandResourceRecyclingofSichuanProvincialHigherLearningInstitutes,NeijiangNormalUniversity,Neiji
5、ang641100,Sichuan,China;3.Academician Workstationof AgriculturalWasteTreatmentandResourceRecycling,Neijiang641100,Sichuan,China)Abstract:Usingsoyisolateprotein(SPI)asrawmaterialandalkenylsuccinicanhydride(ASA)ashydrophobicmodifier,fourkindsofhydrophobicsoyisolatepr
6、otein(ASAx-SPI,thesubscriptxrepresentedthemolarrateofASAtoprimaryaminogroupofSPI,x=0.5,1,1.5and2)withdifferentacylationdegreewerepreparedthroughcontrollingthemolarrateofASAtoprimaryaminogroupofSPI.ThestructuresandpropertiesofASAx-SPIwerecharacterizedbymeansofprimar
7、yaminocontent,FTIR,UV-Vis,fluorescencespectrumandhydrophobicindex.Theresultsindicatedthatlonghydrophobic chainwassuccessfullyintroducedintotheSPImolecularframework,theacylationdegreeandhydrophobicindexofASAx-SPIincreasedwithxandtendedtobestablewhenxexceeded1.5.Subs
8、equently,ASA1.5-SPIwasusedinsurfacesizingofpaperandthesizingamountwas0.77g/m2.ItwasfoundthattheinitialwatercontactangleofASA1.5-SPIsizedpaperwas1
