Natural surfactant and preparation method thereof

The invention discloses a natural surfactant and a preparation method thereof in the field of surfactants. The natural surfactant is prepared from the following components in parts by weight: 80 to 100 parts of cellulose-based surfactant, 30 to 50 parts of dodecyl dimethyl benzyl ammonium chloride, 20 to 30 parts of sodium dodecyl sulfate, 15 to 20 parts of modified silicon dioxide nanoparticles, 5 to 10 parts of xanthan gum and 3 to 7 parts of hectorite. The cottonseed oil fatty acid methyl ester is used for carrying out hydrophobic modification on sodium carboxymethyl cellulose, so that cellulose has surface activity, and meanwhile, dodecyl dimethyl benzyl ammonium chloride, sodium dodecyl sulfate, modified silicon dioxide nanoparticles, xanthan gum and hectorite are added, so that the foam performance of the surfactant is improved. 本发明公开了表面活性剂领域的一种天然表面活性剂及其制备方法，所述天然表面活性剂包括如下重量份的组分：纤维素基表面活性剂80-100份、十二烷基二甲基苄基氯化铵30-50份、十二烷基磺酸钠20-30份、改性二氧化硅纳米颗粒15-20份、黄原胶5-10份、锂皂石3-7份。本发明通过使用棉籽油脂肪酸甲酯对羧甲基纤维素钠进行疏水改性，使得纤维素具有表面活性，同