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由纤维素纳米晶体稳定的皮克林乳液的相图。

Phase Diagram of Pickering Emulsions Stabilized by Cellulose Nanocrystals.

作者信息

Perrin Louise, Desobry-Banon Sylvie, Gillet Guillaume, Desobry Stephane

机构信息

Laboratoire d'Ingénierie des Biomolécules (LIBio), Université de Lorraine, 2 Avenue de la Forêt de Haye, BP 20163, 54505 Vandœuvre-lès-Nancy Cedex, France.

SAS GENIALIS Route d'Achères, 18250 Henrichemont, France.

出版信息

Polymers (Basel). 2023 Jun 22;15(13):2783. doi: 10.3390/polym15132783.

DOI:10.3390/polym15132783
PMID:37447429
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10346652/
Abstract

Cellulose is a promising renewable and biocompatible biopolymer for stabilizing Pickering emulsions (PEs). In the present study, PEs were produced by low-frequency ultrasounds with cellulose nanocrystals (CNCs) and caprylic/capric triglycerides. Phase diagrams allowed to understand mechanisms of formation and long-term stabilization of PEs. Emulsion type, continuous phase viscosity, and yield of oil incorporation were studied after PEs formation. Droplet size, oil release, and stability were measured weekly up to 56 days of storage. Results showed that oil mass fraction above 70% / led to unstable W/O PEs. Lower oil mass fraction formed O/W PEs of stability depending on CNC content and oil mass fraction. Droplet size stability increased with CNCs/oil ratio. A very low CNCs/oil ratio led to phase separation and oil release. High CNC content stabilized oil droplets surface, increased aqueous phase viscosity, and prevented creaming. Highly stable PEs were produced for CNC content above 3% (/) and oil mass fraction below 50% (/). Mechanisms for PEs formation and stabilization were proposed for various CNC contents and oil mass fractions.

摘要

纤维素是一种很有前景的可再生且具有生物相容性的生物聚合物，可用于稳定皮克林乳液（PEs）。在本研究中，通过低频超声用纤维素纳米晶体（CNCs）和辛酸/癸酸甘油三酯制备了PEs。相图有助于理解PEs的形成机制和长期稳定性。在PEs形成后，研究了乳液类型、连续相粘度和油包入率。在长达56天的储存期内，每周测量液滴大小、油释放和稳定性。结果表明，油质量分数高于70%会导致水包油型PEs不稳定。较低的油质量分数形成的水包油型PEs的稳定性取决于CNC含量和油质量分数。液滴大小稳定性随CNCs/油比增加。非常低的CNCs/油比会导致相分离和油释放。高CNC含量稳定了油滴表面，增加了水相粘度，并防止了乳析。当CNC含量高于3%（/）且油质量分数低于50%（/）时，可制备出高度稳定的PEs。针对不同的CNC含量和油质量分数，提出了PEs的形成和稳定机制。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20d7/10346652/5a626f873ef8/polymers-15-02783-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20d7/10346652/f54b27dadd9d/polymers-15-02783-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20d7/10346652/72d01cfd2005/polymers-15-02783-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20d7/10346652/808d4ac32a7c/polymers-15-02783-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20d7/10346652/923f1e30f2b2/polymers-15-02783-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20d7/10346652/7fee6e961274/polymers-15-02783-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20d7/10346652/d67c5b0984b5/polymers-15-02783-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20d7/10346652/acf49ab3f1d4/polymers-15-02783-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20d7/10346652/f598ea4ba711/polymers-15-02783-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20d7/10346652/5a626f873ef8/polymers-15-02783-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20d7/10346652/f54b27dadd9d/polymers-15-02783-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20d7/10346652/72d01cfd2005/polymers-15-02783-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20d7/10346652/808d4ac32a7c/polymers-15-02783-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20d7/10346652/923f1e30f2b2/polymers-15-02783-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20d7/10346652/7fee6e961274/polymers-15-02783-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20d7/10346652/d67c5b0984b5/polymers-15-02783-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20d7/10346652/acf49ab3f1d4/polymers-15-02783-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20d7/10346652/f598ea4ba711/polymers-15-02783-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/20d7/10346652/5a626f873ef8/polymers-15-02783-g009.jpg

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