硅烷偶联剂改性纳米蒙脱石协同正十二烷乳化ASA  

Synergistic Emulsification of Pickering ASA Emulsion by Dodecane and Nano-montmorillonite Modified with Silane Coupling Agent

作　　者：林兆云[1] 李友明[1] 于得海[1] 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广东广州510640

出　　处：《造纸科学与技术》2012年第6期66-69,共4页Paper Science & Technology

基　　金：国家自然科学基金资助项目(20776055)

摘　　要：ASA(烯基琥珀酸酐)是在造纸过程中赋予纸和纸板抗渗透性的一种浆内施胶剂。本文研究了硅烷偶联剂改性纳米蒙脱石协同正十二烷乳化ASA,及其乳液稳定性和施胶性能,对改性纳米蒙脱石(MMT)利用X射线衍射(XRD)、傅里叶红外FT-IR、表面接触角等方法进行分析表征。结果表明,KH570成功改性纳米蒙脱石颗粒,并与蒙脱石表面羟基反应而改变颗粒亲水性;当油水比Φ为0.4时,改性蒙脱石用量为2%时,由KH570改性蒙脱石固体颗粒与正十二烷协同乳化稳定的Pickering乳液型ASA乳液稳定性最好;硫酸铝用量为0.6%时,随ASA用量的增加,纸页施胶效果明显提高。Alkenyl succinic anhydride （ASA） is an internal sizing agent used to hydrophobize paper and paper- board in papermaking process. The stability and sizing performance of ASA Pickering emulsions （o/w） stabilized by nano-montmorillonite （nano-MMT） modified with silane coupling agent KH570 are reported. The modified nano-MMT particles were characterized by XRD, FTIR and interfacial contact angles. And the morphology of ASA emulsions was observed by optical microscopy. The results show that KH570 successfully modified nano-MMT and improved hydrophobicity due to the reaction between KH570 and hydroxyl group of MMT particle. With 0.4 oil vol- ume fraction, stable ASA Pickering emulsions （o/w） was prepared by the synergistic effect of KH570 modified nano-MMT （2wt%） and dodecane. The obtained ASA Pickering emulsion exhibited increased sizing performance with 0.6wt% aluminum sulfate and increasing dosage of ASA.

关 键 词：ASA 纳米蒙脱石 硅烷偶联剂 正十二烷 施胶 

分 类 号：TS727.5[轻工技术与工程—制浆造纸工程]