Phenylboronate-diol crosslinked polymer gels with reversible sol-gel transition

Xu, Jiao; Yang, Dong; Li, Wenjun; Gao, Yong; Chen, Hongbiao; Li, Huaming

doi:10.1016/j.polymer.2011.07.015

Cited by 50 publications

(27 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pristine SWCNTs (p‐SWCNTs, 90%) were purchased from Chengdu Organic Chemicals Co., Chinese Academy of Science. Poly(VPB‐ co ‐DMA) (10 mol% VPB unit, M n = 10.9 kg/mol, PDI = 1.20), and azide‐terminated PHBA ( M n = 16 kg/mol, PDI = 1.23) and f‐SWCNTs were separately synthesized following the procedures outlined in our previous paper (Supporting Information, SI) …”

Section: Methodsmentioning

confidence: 99%

“…In our previous paper, we reported a strategy for the synthesis of reversible polymer gels based on N , N ‐dimethylacrylamide (DMA)‐4‐((4‐vinylbenzyloxy)carbonyl)phenylboronic acid copolymer VPB (poly(VPB‐ co ‐DMA)) and 2,2‐bis(hydroxymethyl)butyl acrylate (HBA) homopolymer (PHBA). Herein, we present the results of incorporation of PHBA‐functionalized single‐walled CNTs (f‐SWCNTs) into the VPB–HBA crosslinked networks, which gives rise to a new type of SWCNT‐based hybrid gel.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Phenylboronate-diol crosslinked polymer/SWCNT hybrid gels with reversible sol-gel transition

Liu

Chen

et al. 2013

Polym. Adv. Technol.

Self Cite

View full text Add to dashboard Cite

This work demonstrates the successful incorporation of functionalized single‐walled carbon nanotubes (f‐SWCNTs) into the phenylboronate‐diol crosslinked polymer gel to create a hybrid system with reversible sol–gel transition. The phenylboronic acid‐containing and diol‐containing polymers were first separately prepared by the reversible addition–fragmentation chain transfer polymerization. Covalent functionalization of single‐walled carbon nanotubes (SWCNTs) with an azide‐derivatized, diol‐containing polymer was then accomplished by a nitrene addition reaction. Subsequently, the hybrid gels were prepared by crosslinking the mixture of f‐SWCNTs and diol‐containing polymer with the phenylboronic acid‐containing polymer. The hybrid gel has been characterized by scanning electron microscopy (SEM) and rheological analysis. The SEM measurement demonstrated a homogeneous dispersion of f‐SWCNTs within the gel matrices. Rheological experiments also demonstrated that the hybrid gel exhibited storage moduli significantly higher than those of the native gel obtained from the phenylboronic acid‐containing and diol‐containing polymers. The hybrid gel can be switched into their starting polymer (f‐SWCNTs) solutions by adjusting the pH of the system. Moreover, the hybrid gel revealed a self‐healing property that occurred autonomously without any outside intervention. By employing this dynamic character, it is possible to regenerate the used gel, and thus, it has the potential to perform in a range of dynamic or bioresponsive applications Copyright © 2013 John Wiley & Sons, Ltd.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Phenylboronate-diol crosslinked polymer/SWCNT hybrid gels with reversible sol-gel transition

Liu

Chen

et al. 2013

Polym. Adv. Technol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…A wide variety of dynamic‐covalent linkages have been harnessed for the development of stimuli‐responsive networks. Popular examples include boronate esters, imines, oximes, enamines, hydrazones, and disulfides, to mention a few . Diels–Alder (DA) adducts, in comparison, often feature superior orthogonality, tunability, and cyclability .…”

Section: Introductionmentioning

confidence: 99%

Glass‐transition temperature governs the thermal decrosslinking behavior of Diels–Alder crosslinked polymethacrylate networks

Dobbins

Scheutz

Sun

et al. 2019

Journal of Polymer Science

View full text Add to dashboard Cite

A series of Diels–Alder (DA) crosslinked polymethacrylate networks covering a broad range of glass‐transition temperatures (Tg) was prepared to establish the relationship between the Tg and the thermal decrosslinking behavior of these networks. A series of permanently crosslinked and uncrosslinked analogues were also prepared to better understand the thermoset‐to‐thermoplastic transition occurring in the DA networks at elevated temperatures. The network series were studied using dynamic mechanical analysis, which established an inverse relationship between Tg and decrosslinking ability. Differential scanning calorimetry confirmed the viability of the DA linkages in all formulations, and a trapping experiment with 9‐anthracenemethanol demonstrated that even the least responsive network was capable of undergoing decrosslinking given appropriate thermal treatment. While polymer chain mobility has long been understood to be a critical factor in healable materials, this work verifies the importance of this parameter in the decrosslinking of DA networks. © 2019 Wiley Periodicals, Inc. J. Polym. Sci. 2020, 58, 193–203

show abstract

“…To improve the response speed, one of important approaches is to introduce the porous structure into the hydrogel to increase the channel for internal water migration . There are many methods for preparing porous hydrogels, such as microphase separation, graft copolymerization, porosigen technique, and freeze polymerization . However, these methods usually require exorbitant specialized equipment or are time‐consuming, and thus limit its practical application.…”

Section: Introductionmentioning

confidence: 99%

Fast swelling behaviors of thermosensitive poly(N‐isopropylacrylamide‐co‐methacryloxyethyltrimethyl ammonium chloride)/Na₂WO₄ cationic composite hydrogels

Xiao

Tan

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

A facile method was explored to synthesize thermosensitive poly[N‐isopropylacrylamide (NIPAM)‐co‐methacryloxyethyltrimethyl ammonium chloride (DMC)]/Na2WO4 cationic hydrogels via copolymerization of NIPAM and DMC in the presence of Na2WO4. Na2WO4 acted as both a physical crosslinking agent and a porogen precursor. The hydrogels were characterized by Fourier transform infrared spectroscopy, energy dispersive X‐ray, thermogravimetry, environmental scanning electron microscopy, and transmission electron microscopy. Effects of various salt solutions, pH solutions on swelling were investigated. Thermosensitivity of the hydrogels were also investigated in various polar solvents at different temperatures. The resultant hydrogel showed a fast swelling rate and good salt tolerance. The hydrogels reached the swelling equilibrium within 10 min. Moreover, the swelling ratio of the hydrogels increased with the increase of the polarity of the solvent. In the water, the swelling ratio decreased with the increasing of temperature, but remained at a high level even at 80 °C since the pore structure weaken the lower critical solution temperature effect of PNIPAM. The swelling ratio increased instead in low polar solvent, while it became negligible in nonpolar solvent with the increasing of temperature. The whole swelling kinetics was fit for Schott's pseudo‐second order model. The hydrogels have a great potential as catalysts and smart materials. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46375.

show abstract

Phenylboronate-diol crosslinked polymer gels with reversible sol-gel transition

Cited by 50 publications

References 56 publications

Phenylboronate-diol crosslinked polymer/SWCNT hybrid gels with reversible sol-gel transition

Phenylboronate-diol crosslinked polymer/SWCNT hybrid gels with reversible sol-gel transition

Glass‐transition temperature governs the thermal decrosslinking behavior of Diels–Alder crosslinked polymethacrylate networks

Fast swelling behaviors of thermosensitive poly(N‐isopropylacrylamide‐co‐methacryloxyethyltrimethyl ammonium chloride)/Na₂WO₄ cationic composite hydrogels

Contact Info

Product

Resources

About

Phenylboronate-diol crosslinked polymer gels with reversible sol-gel transition

Cited by 50 publications

References 56 publications

Phenylboronate-diol crosslinked polymer/SWCNT hybrid gels with reversible sol-gel transition

Phenylboronate-diol crosslinked polymer/SWCNT hybrid gels with reversible sol-gel transition

Glass‐transition temperature governs the thermal decrosslinking behavior of Diels–Alder crosslinked polymethacrylate networks

Fast swelling behaviors of thermosensitive poly(N‐isopropylacrylamide‐co‐methacryloxyethyltrimethyl ammonium chloride)/Na2WO4 cationic composite hydrogels

Contact Info

Product

Resources

About

Fast swelling behaviors of thermosensitive poly(N‐isopropylacrylamide‐co‐methacryloxyethyltrimethyl ammonium chloride)/Na₂WO₄ cationic composite hydrogels