Functional (mikto)stars and star-comb copolymers from d-gluconolactone derivative: An efficient route for tuning the architecture and responsiveness to stimuli

Mielańczyk, Anna; Kupczak, Maria; Burek, Malgorzata; Mielańczyk, Łukasz; Klymenko, Olena; Wandzik, Ilona; Neugebauer, Dorota

doi:10.1016/j.polymer.2018.05.046

Cited by 11 publications

(9 citation statements)

References 52 publications

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“…An ATRP initiator based on the amide derivative of d -gluconic acid containing one azide group and five bromoester groups (GLBr5-Az) was synthesized and described by our group previously. 41…”

Section: Methodsmentioning

confidence: 99%

The structure–self-assembly relationship in PDMAEMA/polyester miktoarm stars

et al. 2022

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Section: Methodsmentioning

confidence: 99%

The structure–self-assembly relationship in PDMAEMA/polyester miktoarm stars

et al. 2022

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“…The monomer DMAEMA is a tertiary amine with double bonds showing pH responsei.e., at low pH, protonated DMAEMA has positive charge and in alkaline solution it is deprotonated without charge. , It has been reported that DMAEMA is sensitive to hydrolysis under acidic and basic conditions, which will lead to a small loss of DMAEMA during polymerization, − with a hydrolysis rate of t 0.5 = 17 h at pH 7.4 and 37 °C. , When DMAEMA has been polymerized into poly(DMAEMA), this polymer is not sensitive to hydrolysis. ,,− According to the literature results and the polymerization time used in this work, the hydrolysis of DMAEMA or poly(DMAEMA) will have little influence on the properties of our polyampholyte hydrogels.…”

Section: Resultsmentioning

confidence: 99%

Unique Self-Reinforcing and Rapid Self-Healing Polyampholyte Hydrogels with a pH-Induced Shape Memory Effect

Zhang

Yang

et al. 2021

Macromolecules

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Tough polyampholyte hydrogels have attracted large attention owing to their favorable mechanical strength, shape memory, and self-healing properties. However, traditional tough polyampholyte hydrogels only have salt responsiveness, and the self-healing usually takes a long time or needs extra treatments. Moreover, self-reinforcement of the hydrogels is essential for the hydrogels during use after the preparation process. In the present work, a weak cationic monomer is introduced to the polyampholyte hydrogel system and copolymerized with a strong cationic monomer and strong anionic monomer with an equal mole ratio between total cationic monomers and anionic monomers. The hydrogel can fix the temporary shape in HCl solution and recover to the original shape in NaOH solution. Interestingly, the hydrogel shows a self-reinforcement capability and the tensile strength increases continuously to ten times larger than that of the as-prepared one by alternately immersing in HCl and NaOH solutions, which presents a new strategy to strengthen the polyampholyte hydrogel. Moreover, the hydrogel exhibits a rapid self-healing capability within 5 min just by making contact without any extra treatment. Healable simulated blood vessels and conductive hydrogel devices are designed consequently. The present polyampholyte hydrogel with shape memory, self-reinforcement, self-healing, and electroconductivity provides a novel strategy for developing new materials in the fields of wearable electronics, flexible devices, and soft robotics.

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“…Strong interactions between the sulfate anions and PDPA may also explain the lack of cloud points in sulfate solutions. As the anion binds onto the PDPA chains, it causes salting-in behavior. − Modeling studies might shed light on the matter in the future.…”

Section: Resultsmentioning

confidence: 99%

Phase Separation of Aqueous Poly(diisopropylaminoethyl methacrylate) upon Heating

et al. 2021

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Poly(diisopropylaminoethyl methacrylate) (PDPA) is a pHand thermally responsive water-soluble polymer. This study deepens the understanding of its phase separation behavior upon heating. Phase separation upon heating was investigated in salt solutions of varying pH and ionic strength. The effect of the counterion on the phase transition upon heating is clearly demonstrated for chloride-, phosphate-, and citrate-anions. Phase separation did not occur in pure water. The buffer solutions exhibited similar cloud points, but phase separation occurred in different pH ranges and with different mechanisms. The solution behavior of a block copolymer comprising poly(dimethylaminoethyl methacrylate) (PDMAEMA) and PDPA was investigated. Since the PDMAEMA and PDPA blocks phase separate within different pH-and temperature ranges, the block copolymer forms micelle-like structures at high temperature or pH.

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Functional (mikto)stars and star-comb copolymers from d-gluconolactone derivative: An efficient route for tuning the architecture and responsiveness to stimuli

Cited by 11 publications

References 52 publications

The structure–self-assembly relationship in PDMAEMA/polyester miktoarm stars

The structure–self-assembly relationship in PDMAEMA/polyester miktoarm stars

Unique Self-Reinforcing and Rapid Self-Healing Polyampholyte Hydrogels with a pH-Induced Shape Memory Effect

Phase Separation of Aqueous Poly(diisopropylaminoethyl methacrylate) upon Heating

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