A simple preparation method of rotaxane cross-linker based on γ-cyclodextrin and its application in hydrogel materials

Zheng, Jingxi; Yang, Ziteng; Sang, Yutong; Zhang, Fengrunze; Zhang, Yixi; Zhang, Peng

doi:10.1016/j.mtcomm.2022.104760

Cited by 5 publications

(2 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The mixture was copolymerized with PAM to obtain CS-PEG/PAM/γ-CD. When fully reacted, CS-PEG/PAM/γ-CD was (a) Our group reported a one-step method for the preparation of a γ-CD cross-linking agent [59]. PEGDA passed through the cavity of γ-CD.…”

Section: The Preparation and Application Of Hydrogel Based On γ-Cd Cr...mentioning

confidence: 99%

Preparation and Application of Polyrotaxane Cross-Linking Agent Based on Cyclodextrin in Gel Materials Field

Liu,

Zheng,

Wang

et al. 2023

Gels

Self Cite

View full text Add to dashboard Cite

The cross-linking point of a conventional chemical cross-linking agent is fixed. Therefore, gels that are prepared with a conventional cross-linking agent have poor deformability, strength, shear resistance, and further properties. Some researchers have prepared a new cross-linking agent using cyclodextrin (CD). In a polyrotaxane cross-linking agent, the cross-linking points can slide freely along the molecule chain. The special “slide ring” structure can provide better elongation, strength, and other properties to gels, which can effectively expand the application of the gel’s materials. This paper summarizes the preparation methods and applications from different types of CD and compares the improvements of properties (swelling, viscoelastic properties, etc.). In addition, the current results of our group are presented, and some ideas are provided for the development of polyrotaxane cross-linking agents.

show abstract

Section: The Preparation and Application Of Hydrogel Based On γ-Cd Cr...mentioning

confidence: 99%

Preparation and Application of Polyrotaxane Cross-Linking Agent Based on Cyclodextrin in Gel Materials Field

Liu,

Zheng,

Wang

et al. 2023

Gels

Self Cite

View full text Add to dashboard Cite

show abstract

“…The development of new supramolecular networks based on cross-linked polyrotaxane structures has gained increased attention due to their slide-ring motions properties [ 1 , 2 , 3 , 4 , 5 , 6 , 7 ]. Therefore, when these materials are exposed to an external stress stimulus, the cross-linked junctions can slide along the polymer chain like a “pulley”, which is reflected in the enhancement of the mechanical properties [ 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Properties and Adsorption Kinetic Study of New Cross-Linked Composite Materials Based on Polyethylene Glycol Polyrotaxane and Polyisoprene/Semi-Rotaxane

Resmeriță¹,

Bargan²,

Cojocaru³

et al. 2023

Materials

View full text Add to dashboard Cite

New composite materials were prepared via cross-linking of polyethylene glycol/2-hydroxypropyl-β-cyclodextrins polyrotaxane (PEG/HPβCD) and polyisoprene/HPβCD semi-polyrotaxane (PI/HPβCD SR) with 1,6-hexamethylene diizocyanate (HMDI). Advanced instrumental methods (such WAXS (wide angle X-ray scattering), AFM (atomic force microscopy), SEM (scanning electron microscopy), and thermal and dynamic vapor sorption) were employed for the structural, morphological and thermal characterization of the resulting composite materials. The roughness parameters calculated using AFM indicate a smoother surface for the composite material with 10 wt% of PI/HPβCD SR, denoting that a homogeneous film was obtained. SEM analysis reveals porous morphologies for both composite materials and the pore sizes increase with the increasing concentration of PI/HPβCD SR in the matrix. Dynamic vapor sorption/desorption measurements and type IV isotherms confirmed the hydrophilic and porous materials, which are in agreement with SEM analysis. The composite with a higher PI/HPβCD SR concentration in the matrix showed increased thermal stability than that of the pure cross-linked material. This material was further tested as a sorbent for methylene blue (MB) dye removal from an aqueous solution. The adsorption capacity of the composite film was found to be 2.58 mg g−1 at 25 °C.

show abstract

Synthesis of a water‐soluble chain transfer agent and its application in gel dispersions

Zhang,

Yang,

Liu

et al. 2024

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

Pre‐crosslinked gel particles, colloidal dispersion gels, and polymer microspheres are often used as profile‐controlling and flooding agents to displace residual crude oil from formations. The preparation process of these profile‐controlling and flooding agents is complicated. In order to simplify the preparation steps, a water‐soluble chain transfer (RAFT) agent, S,S′‐bis(2‐propionic acid) trithiocarbonate (PATTC), was synthesized, and then, hydrogel dispersions were prepared by one‐pot RAFT polymerization. The structure of PATTC was confirmed by infrared spectroscopy and nuclear magnetic resonance. The effects of reaction conditions on the viscosity and viscosity‐average molecular weight of hydrogel dispersions were explored, the rheology, viscoelasticity, particle size, temperature responsiveness, and salinity responsiveness of hydrogel dispersions were measured, and the seepage properties of hydrogel dispersions in porous medium were analyzed. The results show that at higher shear rates, the polyacrylamide gel dispersions exhibited Newtonian fluid characteristics. Viscoelasticity tests further confirmed that the polyacrylamide gel dispersions were successfully synthesized. The particle size of the hydrogel dispersions is 1–75 μm, its viscosity is less affected by temperature and salinity, and its residual resistance coefficient is higher than that of the polyacrylamide solution under similar apparent viscosity.

show abstract

A simple preparation method of rotaxane cross-linker based on γ-cyclodextrin and its application in hydrogel materials

Cited by 5 publications

References 17 publications

Preparation and Application of Polyrotaxane Cross-Linking Agent Based on Cyclodextrin in Gel Materials Field

Preparation and Application of Polyrotaxane Cross-Linking Agent Based on Cyclodextrin in Gel Materials Field

Synthesis, Properties and Adsorption Kinetic Study of New Cross-Linked Composite Materials Based on Polyethylene Glycol Polyrotaxane and Polyisoprene/Semi-Rotaxane

Synthesis of a water‐soluble chain transfer agent and its application in gel dispersions

Contact Info

Product

Resources

About