What does this research mean for the field?

The copolymer composition of N-vinylcaprolactam (NVCL) and N,N-dimethylacrylamide (DMAA) in polyHIPE hydrogels dictates their porous morphology, water uptake, and volume phase transition behavior, with DMAA controlling hydrophilicity and NVCL providing thermoresponsive functionality. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To investigate how the copolymer composition of N-vinylcaprolactam (NVCL) and N,N-dimethylacrylamide (DMAA) influences emulsion stability, porous morphology, water uptake, and volume phase transition behavior in polyHIPE hydrogels.

September 8, 2026ACS Applied Polymer MaterialsOpen Access

Thermoresponsive N-Vinylcaprolactam-Based PolyHIPE Hydrogels with Composition-Controlled Water Uptake and Volume Phase Transition Behavior

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Authors

JKJanja Majer Kovačič SPŠpela Podgrajšek SKSebastijan Kovačič

Discussion

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Overview

Materials study demonstrates tunable water uptake and reversible contraction in NVCL-DMAA hydrogels, suggesting utility as responsive absorbents.

Key Points

To investigate how the copolymer composition of N-vinylcaprolactam (NVCL) and N,N-dimethylacrylamide (DMAA) influences emulsion stability, porous morphology, water uptake, and volume phase transition behavior in polyHIPE hydrogels.
Synthesized a series of polyHIPE hydrogels using oil-in-oil (O/O) high internal phase emulsion templating with varying NVCL to DMAA ratios.
Characterized emulsion stability, porous morphology, porosity percentages, and equilibrium water uptake across temperatures ranging from 4 °C to 45 °C.
Incorporating DMAA enhanced emulsion stability and produced highly porous monoliths (92–94% porosity), decreasing average void diameters from ~92 μm in NVCL-based materials to 23 μm in DMAA-rich materials.
Equilibrium water uptake at 4 °C rose from ~2 g·g⁻¹ for pure NVCL polyHIPEs to 27 g·g⁻¹ for pure DMAA polyHIPEs, with intermediate values (15–24 g·g⁻¹) for NVCL-co-DMAA copolymers.
Heating to 45 °C triggered thermally induced network collapse via NVCL segments passing their lower critical solution temperature, dropping water uptake to 9–21 g·g⁻¹ in a reversible manner.

Cite This Study

Kovačič et al. (2026) studied this question.

synapsesocial.com/papers/6a9fd82058e84d0ff5b475c8 https://doi.org/10.1021/acsapm.6c02452

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September 8, 2026ACS Applied Polymer MaterialsOpen Access

Thermoresponsive N-Vinylcaprolactam-Based PolyHIPE Hydrogels with Composition-Controlled Water Uptake and Volume Phase Transition Behavior

View Full Paper

Ask AI

Bookmark

Authors

JKJanja Majer Kovačič SPŠpela Podgrajšek SKSebastijan Kovačič

Discussion

Member takes

Overview

Materials study demonstrates tunable water uptake and reversible contraction in NVCL-DMAA hydrogels, suggesting utility as responsive absorbents.

Key Points

To investigate how the copolymer composition of N-vinylcaprolactam (NVCL) and N,N-dimethylacrylamide (DMAA) influences emulsion stability, porous morphology, water uptake, and volume phase transition behavior in polyHIPE hydrogels.
Synthesized a series of polyHIPE hydrogels using oil-in-oil (O/O) high internal phase emulsion templating with varying NVCL to DMAA ratios.
Characterized emulsion stability, porous morphology, porosity percentages, and equilibrium water uptake across temperatures ranging from 4 °C to 45 °C.
Incorporating DMAA enhanced emulsion stability and produced highly porous monoliths (92–94% porosity), decreasing average void diameters from ~92 μm in NVCL-based materials to 23 μm in DMAA-rich materials.
Equilibrium water uptake at 4 °C rose from ~2 g·g⁻¹ for pure NVCL polyHIPEs to 27 g·g⁻¹ for pure DMAA polyHIPEs, with intermediate values (15–24 g·g⁻¹) for NVCL-co-DMAA copolymers.
Heating to 45 °C triggered thermally induced network collapse via NVCL segments passing their lower critical solution temperature, dropping water uptake to 9–21 g·g⁻¹ in a reversible manner.

Cite This Study

Kovačič et al. (2026) studied this question.

synapsesocial.com/papers/6a9fd82058e84d0ff5b475c8 https://doi.org/10.1021/acsapm.6c02452

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