Temperature and CO2 Dual-Responsive Pickering Emulsions Using Jeffamine M2005-Modified Cellulose Nanocrystals

Ren，Gaihuan1; Zheng，Xiaoyang1; Gu，Hui1; Di，Wenwen1; Wang，Zengzi1; Guo，Yanlin1; Xu，Zhenghe2,3; Sun，Dejun1

2019-10-22

10.1021/acs.langmuir.9b02497

LANGMUIR   影响因子和分区

0743-7463

1520-5827

Cellulose nanocrystals (CNCs) with excellent biodegradability are promising biomaterials for use as responsive Pickering emulsifiers. However, the high hydrophilicity of CNCs limits their emulsification ability. Some existing studies have utilized complicated covalent modification procedures to increase the hydrophobicity of CNCs. To simplify the modification process, we prepared hydrophobically modified CNCs (CNCs-M2005) via simple and controllable electrostatic interactions with thermosensitive M2005. The obtained CNCs-M2005 exhibited temperature and CO dual-responsive properties. Subsequently, stable oil/water Pickering emulsions were prepared using the partially hydrophobic CNCs-M2005 at 20 °C. However, demulsification occurred when the temperature increased to 60 °C. This temperature-induced demulsification resulted from the dehydration of polyethylene oxide and polypropylene oxide, causing the aggregation of the CNCs-M2005, as shown by dynamic light scattering and transmission electron microscopy experiments. In addition, demulsification was also achieved after bubbling CO, which was attributed to the dissociation of the partially hydrophobic CNCs-M2005. The temperature and CO dual-responsive biosafe Pickering emulsions open up opportunity for the design of intelligent food, cosmetic, and drug delivery systems.

SCI ; EI

英语

其他

Natural Science Foundation of China (NSFC)[21333005]

Chemistry ; Materials Science

Chemistry, Multidisciplinary ; Chemistry, Physical ; Materials Science, Multidisciplinary

WOS:000492800800017

AMER CHEMICAL SOC

20194207535242

Controlled drug delivery ; Hydrophobicity ; Demulsification ; Nanocrystals ; Carbon dioxide ; Emulsification ; Hydrophilicity ; Light transmission ; Biodegradability ; Cellulose ; Cellulose derivatives ; Emulsions ; Light scattering ; Oils and fats ; Polyethylene oxides ; Polypropylenes ; Ostwald ripening

Light/Optics:741.1 ; Optical Devices and Systems:741.3 ; Nanotechnology:761 ; Biochemistry:801.2 ; Chemical Operations:802.3 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Inorganic Compounds:804.2 ; Cellulose, Lignin and Derivatives:811.3 ; Organic Polymers:815.1.1 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Crystalline Solids:933.1

CHEMISTRY

2-s2.0-85073145136

Scopus

1.Key Laboratory of Colloid and Interface ChemistryMinistry of EducationShandong University,Jinan, Shandong,250100,China
2.Department of Materials Science and EngineeringSouthern University of Science and Technology,Shenzhen, Guangdong,518055,China
3.Department of Chemical and Materials EngineeringUniversity of Alberta,Edmonton,T6G 1H9,Canada

Ren，Gaihuan,Zheng，Xiaoyang,Gu，Hui,et al. Temperature and CO2 Dual-Responsive Pickering Emulsions Using Jeffamine M2005-Modified Cellulose Nanocrystals[J]. LANGMUIR,2019,35(42):13663-13670.

Ren，Gaihuan.,Zheng，Xiaoyang.,Gu，Hui.,Di，Wenwen.,Wang，Zengzi.,...&Sun，Dejun.(2019).Temperature and CO2 Dual-Responsive Pickering Emulsions Using Jeffamine M2005-Modified Cellulose Nanocrystals.LANGMUIR,35(42),13663-13670.

Ren，Gaihuan,et al."Temperature and CO2 Dual-Responsive Pickering Emulsions Using Jeffamine M2005-Modified Cellulose Nanocrystals".LANGMUIR 35.42(2019):13663-13670.