Premium
The gelation of hydroxypropyl guar gum by nano‐ZrO 2
Author(s) -
Chen Fu,
Yang Yang,
He Jie,
Bu Tao,
He Xuemei,
He Kunyi,
Xiang Chunlin,
Yu Zongxue,
Wu Hongjun
Publication year - 2018
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.4168
Subject(s) - materials science , crystallinity , composite material , nano , shear modulus , elastic modulus , rheology , dynamic modulus , modulus , dynamic mechanical analysis , chemical engineering , polymer , engineering
In the study, hydroxypropyl guar gum (HPG) gel is prepared by using Nano‐ZrO 2 particles as the cross‐linking agent. The Nan‐ZrO 2 particles are prepared by using oil‐water interface method. The physical properties such as morphology, particle size, and crystal structure of the Nano‐ZrO 2 particles are analyzed by SEM, particle size analyzer, FT‐IR, and XRD, respectively. The results show that the Nano‐ZrO 2 particles are spherical particles with a little agglomeration; these spherical particles have a tetragonal structure and higher crystallinity, and the mean diameter of the first‐level grain is 24 nm. The rheological properties including shear stress, complex modulus, elasticity modulus (G′), and viscosity modulus (G′′) of the Nano‐ZrO 2 cross‐linked HPG gel are investigated. The results show that the Nano‐ZrO 2 cross‐linked HPG gel is a pseudo‐plastic non‐Newtonian fluid with higher elastic modulus (G′ > G′′) and lower tanδ (tanδ < 1, the ratio of viscous and elastic modulus), which indicate that the Nano‐ZrO 2 cross‐linked HPG gel may have potential application in fracturing.