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The products were characterized by TGA, IR, UV and MS to confirm the major chemicals in each sample. The new products could reduce the interfacial tension between oil and water in the experimental temperature range further compared to SDBS. The emulsion ability was also enhanced by SDBS-1 to SDBS-4. The oil-displacement efficiencies of SDBS-1 to SDBS-4 were obviously higher than that of SDBS, and the oil-displacement efficiency of SDBS-2 was the best, with an efficiency of 25%. The experimental results all indicate that these products have an excellent ability to reduce oil\u2013water interfacial tension and that they can be used in the oil and petrochemical industry for oil production and have certain practical uses.<\/jats:p>","DOI":"10.3390\/molecules28083640","type":"journal-article","created":{"date-parts":[[2023,4,21]],"date-time":"2023-04-21T10:11:25Z","timestamp":1682071885000},"page":"3640","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":28,"title":["Preparation of Multifunctional Surfactants Derived from Sodium Dodecylbenzene Sulfonate and Their Use in Oil-Field Chemistry"],"prefix":"10.3390","volume":"28","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2195-3575","authenticated-orcid":false,"given":"Yongfei","family":"Li","sequence":"first","affiliation":[{"name":"Shaanxi University Engineering Research Center of Oil and Gas Field Chemistry, Xi\u2019an Shiyou University, Xi\u2019an 710065, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Quanzheng","family":"Bai","sequence":"additional","affiliation":[{"name":"Xi\u2019an Changqing Chemical Group Co., Ltd., Xi\u2019an 710018, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qiang","family":"Li","sequence":"additional","affiliation":[{"name":"Xi\u2019an Changqing Chemical Group Co., Ltd., Xi\u2019an 710018, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hai","family":"Huang","sequence":"additional","affiliation":[{"name":"Shaanxi University Engineering Research Center of Oil and Gas Field Chemistry, Xi\u2019an Shiyou University, Xi\u2019an 710065, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Weijun","family":"Ni","sequence":"additional","affiliation":[{"name":"Shaanxi University Engineering Research Center of Oil and Gas Field Chemistry, Xi\u2019an Shiyou University, Xi\u2019an 710065, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qian","family":"Wang","sequence":"additional","affiliation":[{"name":"Shaanxi University Engineering Research Center of Oil and Gas Field Chemistry, Xi\u2019an Shiyou University, Xi\u2019an 710065, China"},{"name":"Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields, Xi\u2019an Shiyou University, Xi\u2019an 710065, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xin","family":"Xin","sequence":"additional","affiliation":[{"name":"Department of Crop Soil Sciences, Washington State University, Pullman, WA 99163, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6498-5721","authenticated-orcid":false,"given":"Bin","family":"Zhao","sequence":"additional","affiliation":[{"name":"Department of Statistics, North Dakota State University, Fargo, ND 58102, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3711-4250","authenticated-orcid":false,"given":"Gang","family":"Chen","sequence":"additional","affiliation":[{"name":"Shaanxi University Engineering Research Center of Oil and Gas Field Chemistry, Xi\u2019an Shiyou University, Xi\u2019an 710065, China"},{"name":"Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields, Xi\u2019an Shiyou University, Xi\u2019an 710065, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,4,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"104","DOI":"10.1515\/tsd-2020-2305","article-title":"Synthesis of multi-alkylpolyamine and performance in crude oil as flow improver","volume":"59","author":"Zhou","year":"2022","journal-title":"Tenside Surfact. 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