构建协同氧化石墨烯的球形纤维素纳米晶体以稳定 Pickering 乳液。
Construction of spherical cellulose nanocrystals synergized with graphene oxide to stabilize Pickering emulsions.
机构信息
Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China; State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China; State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
出版信息
Int J Biol Macromol. 2023 Jul 1;242(Pt 1):124499. doi: 10.1016/j.ijbiomac.2023.124499. Epub 2023 Apr 18.
In this study, we prepared spherical cellulose nanocrystals (S-CNCs) and stabilized n-hexadecane Pickering emulsions in conjunction with graphene oxide (GO), exploring the interaction between S-CNCs and GO in the emulsions. Both S-CNCs and GO are amphiphilic and synergistically stabilize Pickering emulsions by adhering to the surface of oil droplets and within the emulsion space through hydrogen bonding. GO's two-dimensional sheets assemble into a 3D network structure, further improving the stability of Pickering emulsions. Consequently, the stability of Pickering emulsions can be adjusted by altering the S-CNCs/GO ratio, modifying the spatial distribution relationship of stabilizers in the emulsions. At an S-CNCs concentration of 1 g/L and a GO concentration of 3 g/L, the Pickering emulsion demonstrated excellent stability and exhibited no delamination after 31 days of storage. Thus, the S-CNCs/GO combination serves as an effective Pickering emulsion stabilizer, utilizing the synergistic effect between the two components.
在这项研究中，我们制备了球形纤维素纳米晶体（S-CNCs）并与氧化石墨烯（GO）稳定了正十六烷 Pickering 乳液，探索了 S-CNCs 和 GO 在乳液中的相互作用。S-CNCs 和 GO 均具有两亲性，通过氢键协同稳定 Pickering 乳液，通过氢键吸附在油滴表面和乳液空间内。GO 的二维片层组装成 3D 网络结构，进一步提高了 Pickering 乳液的稳定性。因此，可以通过改变 S-CNCs/GO 比例来调节 Pickering 乳液的稳定性，从而改变稳定剂在乳液中的空间分布关系。在 S-CNCs 浓度为 1 g/L 和 GO 浓度为 3 g/L 时，Pickering 乳液表现出优异的稳定性，在储存 31 天后没有分层。因此，S-CNCs/GO 组合是一种有效的 Pickering 乳液稳定剂，利用了两种成分的协同效应。
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