Controlling the properties of radiation-synthesized thermoresponsive oligoether methacrylate hydrogels by varying the monomer side-chain length; self-composite network containing crystalline phase

Piechocki, Krzysztof; Kozanecki, Marcin; Kadłubowski, Sławomir; Pacholczyk‐Sienicka, Barbara; Ulański, Piotr; Biela, Tadeusz

doi:10.1016/j.polymer.2018.07.025

Cited by 12 publications

(4 citation statements)

References 61 publications

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“…We then were interested in understanding how these cross-links present themselves in the aggregate. It is well known that polymers containing polyethylene glycol chains tend to show a crystalline behavior, and the extent of crystallization is dependent on the molecular weight of ethylene glycol moieties. − Based on these reports, we hypothesized that longer OEG-chain-containing nanogels can show crystalline behavior due to the physical cross-linking of the side chains. To test this, we analyzed NG9 and NG1 using high-resolution TEM at cryogenic temperature.…”

Section: Resultsmentioning

confidence: 97%

Role of Oligoethylene Glycol Side Chain Length in Responsive Polymeric Nanoassemblies

et al. 2019

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An oft-desired feature of a responsive nanomaterial is that it should undergo disassembly or morphological change upon application of a specific stimulus. The extent of response has been found to depend on factors such as the nature and the number of responsive functionalities incorporated into these particles. In this work, the length of oligoethylene glycol (OEG) side chains associated with the polymers has been shown to greatly influence the responsive behavior of polymeric nanoparticles. The integrity of these OEG-based polymeric assemblies was found to depend not only on the chemical cross-links but also on the physical cross-links in these aggregates in cases where the polymer chains bear long OEG side chains. The physical cross-linking in longer OEG side chain containing polymeric nanogels is present in the form of crystalline domains. Our results here highlight that these ethylene glycol-based hydrophilic units are not to be ignored as spectator units with water-solubilization characteristics but must be analyzed in the context of assembly stabilization and triggerability with the targeted stimulus.

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Section: Resultsmentioning

confidence: 97%

Role of Oligoethylene Glycol Side Chain Length in Responsive Polymeric Nanoassemblies

et al. 2019

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“…Murcinkova & Krenicky [12] applied altered composite microstructures for damping of production machines and manipulator devices, Todic et al [20] and Krenicky [10] implemented multifactorial monitoring methods for evaluation of complex material characteristics. Durdan et al [5] implemented various annealing procedures to alter material properties, Piechocki et al [19] controlled properties of oligoethers by using radiation, Macala et al [11] and Pandova et al [18] reported on ways of reduction of harmful substances. Jurko et al [6,7,8] studied mechanical deformation of materials during processing and operation, Valicek et al [21] developed method of the deformation evaluation.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Therefore, the relationship study of linear block-polyurethanes (BPU) based on mixtures of oligoethers structure with strength, deformation, rheological and tribotechnical characteristics, mathematical prediction of their behavior in different operating conditions, taking into account the quality indicators of the material, is of great practical importance for use in industry [3,4,14,16]. It was found that main characteristics that determine the properties of linear block-polyurethanes are their molecular weight and the concentration of rigid segments in a macromolecule [11,13,19,20]. It is possible to obtain materials with preset exploitation characteristics by adjusting these parameters at the stage of synthesis.…”

Section: Introductionmentioning

confidence: 99%

Properties Prediction of Linear Block-Polyurethanes Based on the Mixtures of Simple Oligoethers

Anisimov

Krenický

2019

Management Systems in Production Engineering

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Polyurethanes are materials usable in wide spectrum of applications. This article is aimed at the properties tailoring of selected polymers by an alteration in initial materials. To achieve that goal, we proposed form the polyurethane matrix by mixing materials that have a different ratio of the initial components. Mathematical model has been developed that describes relationship of structure and strength, deformation, rheological and tribotechnical characteristics of linear block-polyurethanes based on oligoether blends. Oligoethers blend samples were obtained by injection moulding on an automatic thermoplastication machine with varying proportions of the starting components over the whole concentration range. A significant change of properties over the whole concentration range was observed and compositions with unique combination of characteristics have been determined. Obtained dependencies allow to predict the composition of the binary mixture with a tailored level of strength, deformation, rheological and tribotechnical characteristics. The obtained results are fully consistent with the practical experience of processing and exploitation of initial polyurethanes.

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“…Block copolymers based on tert-butyl methacrylate (tBMA) have many uses, such as in its incorporation in thermo-responsive polymers with a lower critical solution temperature 25 , peptide-polymer conjugates with selforganizing property and biological activities 26 , well-defined amphiphilic graft copolymers 27 , polymers with very good electrochemical 28 and magnetic performances 29 , and also many applications in the medical field [30][31][32][33] . This recent application growth of tBMA-based materials suggests a need for in-depth knowledge of synthesis by ATRP.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Atom-Transfer Radical Polymerization of tert-butyl Methacrylate

Herrera

Vieira

2019

Mat. Res.

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Block copolymers based on tert-butyl methacrylate (tBMA) have many uses, such as thermoresponsive polymers, amphiphilic copolymers, and many applications in the medical field. Atom-transfer radical polymerization (ATRP) is the main technique to produce these controlled macromolecular architectures. This paper provides a simplified kinetic modeling and computational study of tBMA ATRP. The main objective is to understand the behavior of chemical species in the reaction and its influence on polymer properties (molecular weight and dispersity). The proposed model presented good reproducibility of the experimental data, with average errors less than 10%. The simulations indicated a strong initiator and catalyst concentration dependence on the monomer conversion. Although the highest initiator proportion induced a dispersity increase in conversions less than 20%, in general, for tBMA ATRP, the range of operational condition cannot affect dispersity directly. In addition, our finds about the effect of K eq on polymer properties indicated that to conduct the reaction using catalyst systems with K eq around 10-5-10-6 would provide very low dispersity polymers in a fast reaction time.

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Controlling the properties of radiation-synthesized thermoresponsive oligoether methacrylate hydrogels by varying the monomer side-chain length; self-composite network containing crystalline phase

Cited by 12 publications

References 61 publications

Role of Oligoethylene Glycol Side Chain Length in Responsive Polymeric Nanoassemblies

Role of Oligoethylene Glycol Side Chain Length in Responsive Polymeric Nanoassemblies

Properties Prediction of Linear Block-Polyurethanes Based on the Mixtures of Simple Oligoethers

Numerical Simulation of Atom-Transfer Radical Polymerization of tert-butyl Methacrylate

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