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低界面张力驱油表面活性剂的界面扩张流变研究
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作者 楚艳苹 高峰 +2 位作者 张伟华 张磊 张路 《日用化学工业(中英文)》 北大核心 2025年第8期961-968,共8页
采用旋转滴法研究了阴离子表面活性剂重烷基苯磺酸盐(HABS)和石油磺酸盐(PS)的界面扩张流变特性。考察了振荡频率、表面活性剂浓度、油相、界面张力对界面模量的影响,比较了HABS和PS的界面膜强度和界面活性的差异。结果表明,HABS的亲水... 采用旋转滴法研究了阴离子表面活性剂重烷基苯磺酸盐(HABS)和石油磺酸盐(PS)的界面扩张流变特性。考察了振荡频率、表面活性剂浓度、油相、界面张力对界面模量的影响,比较了HABS和PS的界面膜强度和界面活性的差异。结果表明,HABS的亲水亲油平衡能力比PS强,能将癸烷-水界面张力和原油-水界面张力降低至0.01 mN/m数量级。HABS和PS分子间均以静电斥力为主,扩散-交换过程主导,界面膜黏性较大。在癸烷-水界面,分子尺寸较小的HABS扩散-交换更快,界面膜的黏性比PS高,扩张模量在高浓度时降低得更明显;原油中活性组分在原油-水界面上混合吸附,造成HABS和PS界面膜的黏弹特性相似。HABS与原油组分间存在协同效应,在将界面张力降低至0.01 mN/m数量级的同时,还能维持一定的界面膜强度,在提高原油采收率方面有较大潜力。 展开更多
关键词 旋转滴法 界面张力 界面扩张模量 重烷基苯磺酸盐 石油磺酸盐
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Research on the Impact of Entrepreneurial Learning on the Business Model Innovation of Startups
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作者 yanping chu Marlon Rael Astillero 《Proceedings of Business and Economic Studies》 2022年第3期75-80,共6页
Entrepreneurial learning involves all kinds of learning activities carried out by enterprises in the process of development.It helps entrepreneurs,as the backbone of enterprises,master key entrepreneurial knowledge an... Entrepreneurial learning involves all kinds of learning activities carried out by enterprises in the process of development.It helps entrepreneurs,as the backbone of enterprises,master key entrepreneurial knowledge and solve practical problems encountered in entrepreneurship.It runs through the whole process of entrepreneurial activities.According to research,through entrepreneurial learning,start-ups can improve entrepreneurial opportunities,entrepreneurial dynamics,and other development potentials;additionally,it helps enterprises better grasp and make full use of opportunities,so as to promote business model innovation and enterprise development.In view of this,this paper focuses on the impact of entrepreneurial learning on the business model innovation of startups,expounds the connotation of entrepreneurial learning,analyzes the impact of entrepreneurial learning on the business model innovation of startups,and proposes strategies on how to promote the business model innovation of startups through entrepreneurial learning based on practice,so as to achieve a breakthrough in the bottleneck of development and provide reference for the innovation and development of more startups. 展开更多
关键词 Entrepreneurial learning Startups Business model innovation STRATEGY
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