有机硅改性菊粉表面活性剂的合成及性能研究  

Synthesis and properties of organosilicon modified inulin surfactant

作　　者：孙凤霞 陈洪龄 SUN Fengxia;CHEN Hongling(College of Chemical Engineering,Nanjing Tech University,Nanjing 211800,China)

机构地区：[1]南京工业大学化工学院,江苏南京211800

出　　处：《精细石油化工进展》2022年第6期38-42,共5页Advances in Fine Petrochemicals

摘　　要：利用烯丙基缩水甘油醚(AGE)、七甲基三硅氧烷(MDHM)和菊粉(GFn)分别进行醚化、硅氢加成反应,得到有机硅改性菊粉表面活性剂(Si-GFn)。改变烯丙基缩水甘油醚和七甲基三硅氧烷投料摩尔比得到3种有机硅改性菊粉表面活性剂,分别为Si-GFn1(AGE、MDHM、GFn的摩尔比为1∶0.8∶1)、Si-GFn2(AGE、MDHM、GFn的摩尔比为2∶1.6∶1)和Si-GFn3(AGE、MDHM、GFn的摩尔比为3∶2.4∶1)。对改性产物进行傅里叶变换红外光谱(FT-IR)、扫描电子显微镜(SEM)和核磁共振氢谱(1H NMR)表征,研究不同原料配比对改性产物表面张力、接触角、溶解性、二甲基硅油乳化及起泡性能的影响。结果表明:Si-GFn2溶液具有最低的表面张力、最小的接触角和最佳乳化效果,达到临界胶束浓度(CMC)时表面张力约为22 mN/m,平衡后接触角约为32°;Si-GFn1的水溶液起泡性最强。Hydrophobic groups of organosilicon were introduced onto inulin(GFn)through etherification and hydrosilylation by allyl glycidyl ether(AGE)and heptamethyltrisiloxane(MDHM).Three kinds of silicone modified inulin(Si-GFn)surfactants were obtained by changing the molar ratio of allyl glycidyl ether and heptamethyltrisiloxane,which were Si-GFn1(n(AGE)∶n(MDHM)∶n(GFn)=1∶0.8∶1),Si-GFn2(n(AGE)∶n(MDHM)∶n(GFn)=2∶1.6∶1)and Si-GFn3(n(AGE)∶n(MDHM)∶n(GFn)=3∶2.4∶1).The inulin derivatives were analyzed by FT-IR,SEM and1H NMR.The effects of different mole ratio of reactants on the surface tension,contact angle,emulsifying and foaming property of modified inulin were studied.Resalts showed that SiGFn2 obtained the minimal surface tension,contact angle and the best emulsifying ability of simethicone with the surface tension about 22 mN/m at CMC and the contact angle about 32°at equilibrium.Si-GFn1 got the best foaming ability.

关 键 词：菊粉 有机硅表面活性剂 乳化 有机硅改性菊粉 烯丙基缩水甘油醚 七甲基三硅氧烷 

分 类 号：TQ423[化学工程]