Polydimethylsiloxane (PDMS)-containing hydrogels prepared by micellar copolymerization in aqueous media

Lin, Yi; He, Deliu; Hu, Huawen; Sun, Sheng; Li, Yuhao; Liu, Xiaoting; Li, Guangji

doi:10.1016/j.matlet.2019.127251

Cited by 10 publications

(5 citation statements)

References 35 publications

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“…5). 45,46 These findings reveal that no residual IPDI exists in the final reaction product, thus confirming the completeness of the reaction between IPDI and HEMA and the formation of IPDI-HEMA. We further analyze the prepared hydrogels by FTIR spectroscopy to characterize their macromolecular structures, with the results provided in Fig.…”

Section: Structural Characterization Of the Synthesized Hydrogelssupporting

confidence: 58%

A hierarchical system of covalent and dual non-covalent crosslinks promotes the toughness and self-healing properties of polymer hydrogels

Lin

Wang

et al. 2022

J. Mater. Chem. B

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Section: Structural Characterization Of the Synthesized Hydrogelssupporting

confidence: 58%

A hierarchical system of covalent and dual non-covalent crosslinks promotes the toughness and self-healing properties of polymer hydrogels

Lin

Wang

et al. 2022

J. Mater. Chem. B

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“…For the PU-ViTS sponge (Figure b), the FTIR absorption peaks at 3061 and 3026 cm –1 are attributed to the asymmetric and symmetric stretching vibrations, respectively. The absorption peak at 1600 cm –1 is due to the existence of the CC bonds, and the absorption peak at 1408 cm –1 can be assigned to the plane shear motion of CHCH 2 . , The absorption peaks indexed to Si–O–Si and Si–O–C can be noted at 1061 and 1001 cm –1 . , These FTIR spectra-based attributions indicate that the polysiloxane with CC was formed on the surface of the sponge. In PU-PNIPAAm spectrum (Figure c).…”

Section: Results and Discussionmentioning

confidence: 89%

“…53,54 The absorption peaks indexed to Si−O−Si and Si−O−C can be noted at 1061 and 1001 cm −1 . 55,56 These FTIR spectra-based attributions indicate that the polysiloxane with CC was formed on the surface of the sponge. In PU-PNIPAAm spectrum (Figure 2c).…”

Section: Resultsmentioning

confidence: 99%

Thermoresponsive Polyurethane Sponges with Temperature-Controlled Superwettability for Oil/Water Separation

Peng

Sui

et al. 2020

ACS Appl. Polym. Mater.

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Here we have obtained a thermoresponsive three-dimensional (3D) polyurethane (PU) sponge with temperature-controlled superwettability. First, silanization was used to enhance the surface roughness of the PU sponge and reactive vinyl groups were provided. We then grafted a polyisopropylacrylamide (PNIPAAm) hydrogel to the PU skeleton, resulting in the preparation of a temperature-responsive 3D PU material showing useful oil−water separation performance. The surface morphology, chemical composition, and wettability of the prepared modified PU sponge were clarified. The surface wettability of the modified sponge changed with temperature. Under ambient conditions with a temperature of 25 °C, which is lower than the low critical solution temperature of PNIPAAm (LCST, about 32 °C), the product showed superhydrophilicity in air and superoleophobicity under water, while when the outside temperature (45 °C) became higher than the LCST, the product changed to show high hydrophobicity in air and superlipophilicity under water. After 8 cycles of temperature variation, the product still showed impressive responsiveness. In addition to the smart responsive properties, the modified PU sponge could absorb and automatically desorb oil at 45 and 20 °C, respectively, showing good oil−water separation ability, together with the capability of oil recycling.

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“…Hydrogels are insoluble 3D networks containing a high amount of water (at least 10% of the total weight or volume) [4,7], that may be produced using natural (i.e., agarose [8], collagen [9], gelatin [10], and chitosan [11]) and/or synthetic (i.e., poly (ethylene glycol) (PEG) [12], polyacrylamide (PAA) [13], polydimethylsiloxane (PDMS) [14]) polymers.…”

Section: Of 23mentioning

confidence: 99%

Building Fucoidan/Agarose-Based Hydrogels as a Platform for the Development of Therapeutic Approaches against Diabetes

et al. 2023

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Current management for diabetes has stimulated the development of versatile 3D-based hydrogels as in vitro platforms for insulin release and as support for the encapsulation of pancreatic cells and islets of Langerhans. This work aimed to create agarose/fucoidan hydrogels to encapsulate pancreatic cells as a potential biomaterial for diabetes therapeutics. The hydrogels were produced by combining fucoidan (Fu) and agarose (Aga), marine polysaccharides derived from the cell wall of brown and red seaweeds, respectively, and a thermal gelation process. The agarose/fucoidan (AgaFu) blended hydrogels were obtained by dissolving Aga in 3 or 5 wt % Fu aqueous solutions to obtain different proportions (4:10; 5:10, and 7:10 wt). The rheological tests on hydrogels revealed a non-Newtonian and viscoelastic behavior, while the characterization confirmed the presence of the two polymers in the structure of the hydrogels. In addition, the mechanical behavior showed that increasing Aga concentrations resulted in hydrogels with higher Young’s modulus. Further, the ability of the developed materials to sustain the viability of human pancreatic cells was assessed by encapsulation of the 1.1B4HP cell line for up to 7 days. The biological assessment of the hydrogels revealed that cultured pancreatic beta cells tended to self-organize and form pseudo-islets during the period studied.

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Polydimethylsiloxane (PDMS)-containing hydrogels prepared by micellar copolymerization in aqueous media

Cited by 10 publications

References 35 publications

A hierarchical system of covalent and dual non-covalent crosslinks promotes the toughness and self-healing properties of polymer hydrogels

A hierarchical system of covalent and dual non-covalent crosslinks promotes the toughness and self-healing properties of polymer hydrogels

Thermoresponsive Polyurethane Sponges with Temperature-Controlled Superwettability for Oil/Water Separation

Building Fucoidan/Agarose-Based Hydrogels as a Platform for the Development of Therapeutic Approaches against Diabetes

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