Environmentally friendly tailor-made oleo-dispersions of electrospun cellulose acetate propionate nanostructures in castor oil for lubricant applications  

作　　者：M.A.Martín-Alfonso J.F.Rubio-Valle J.P.Hinestroza J.E.Martín-Alfonso J.M.Franco 

机构地区：[1]Chemical Product and Process Technology Research Center(Pro2TecS),Department of Chemical Engineering and Materials Science,ETSI,University of Huelva,21071,Huelva,Spain [2]Department of Fiber Science and Apparel Design,Cornell University,Ithaca,NY,14853,USA

出　　处：《Nano Materials Science》2025年第1期90-104,共15页纳米材料科学(英文版)

基　　金：sponsored by MCIN/AEI/10.13039/501100011033;“ERDF A way of making Europe”(grant PID2021-125637OB-I00);FEDER/Junta de Andalucía Programmes(grants PY20_00751 and UHU202029).

摘　　要：The aim of this work is to find an alternative lubricating grease formulation that can be produced from renewable and biodegradable sources with minimal risks to human health and the environment.We used a castor oil and electrospun cellulose acetate propionate(CAp)as raw materials.We hypothesized that the acetyl and propionyl groups could provide an adequate chemical compatibility with the castor oil and that the electrospun nanostructures could enable improved physical stability by creating a variety of morphologies allowing the tailoring of the rheological and tribological properties of the resulting greases.The experimental results show that the use of electrospun CAp nanostructures can indeed yield physically stable formulations,even when used at low concentrations(3 wt%).The resulting dispersions went through structural transitions due to changes in the thickener morphologies and/or concentration,as shown by oscillatory rheology,oil holding capacity,tackiness,and lubrication performance in metal–metal contact.We found that the formulations,containing smooth or porous CAp nanofibers,at 5 wt%as a thickener,possess suitable rheological and tribological properties with a performance comparable to that of traditional lithium lubricating greases.

关 键 词：Cleaner products Green lubricants NANOFIBERS Rheology TRIBOLOGY 

分 类 号：TE626.3[石油与天然气工程—油气加工工程] TE626.4