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Citation: HUANG Liangxian, DING Yang, HUANG Jie, GAO Rong, AN Qiufeng. Synthesis of Anionic Trisiloxane Surfactant and Its Properties[J]. Chinese Journal of Applied Chemistry, ;2011, 28(6): 722-726. doi: 10.3724/SP.J.1095.2011.00464 shu

Synthesis of Anionic Trisiloxane Surfactant and Its Properties

1.
Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science & Technology, Xi'an 710021

Corresponding author: HUANG Liangxian,
Received Date: 9 August 2010
Available Online: 18 November 2010
Fund Project: 陕西省教育厅自然科学专项科研计划(09JK349) (09JK349)陕西省教育厅重点实验室重点科研计划(09JS060)资助项目 (09JS060)

A new kind of anionic trisiloxane surfactant(ATSS) was synthesized by the ring-opening reaction of maleic anhydride(MA) with hydroxyl terminated polyether group trisiloxane(HPETS).HPETS was prepared by hydrosilylation from 1,1,1,3,5,5,5-heptamethyltrisiloxane(MD^HM) and allyl polyoxyethylene ether(APE) in the presence of platinum catalyst.The chemical structure of ATSS was characterized by IR.The interfacial properties of ATSS were measured,and its application was investigated in pesticide.Experimental results show that ATSS exhibits excellent surface activity.The critical micelle concentration(cmc) of ATSS solution is 1.3 g/L.The surface tension(γ_cmc) of ATSS solution in cmc is 24.5 mN/m.When ATSS was respectively added with 0.1% into emamectin benzoate 2.5% EC,glyphosate isopropylamin 41% AS and thiophanatemethyl 36% SC diluted to 1000 times with water,the surface tension of emamectin benzoate solution,glyphosate isopropylamin solution and thiophanate-methyl solution was decreased respectively from 31.92 mN/m,55.20 mN/m and 39.66 mN/m to 24.92 mN/m,25.47 mN/m and 27.13 mN/m;while the contact angle on potherb spinach leaf was reduced respectively from 62.5°,68.0° and 57.0° to 37.0°,39.0° and 40.5°.
- trisiloxane,
- anionic surfactant,
- carboxylic acid,
- pesticide auxiliaries,
- interfacial property
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