Polymer side-chain modification in methacrylate and styrene copolymers through thiol-thioester dynamic exchange

Fila, K.; Goliszek, Marta; Podkościelna, Beata; Podgórski, Maciej

doi:10.1016/j.eurpolymj.2020.109918

Cited by 12 publications

(9 citation statements)

References 58 publications

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“…When analyzing the shape of TG and DTG curves, the decomposition of EGDMA-MMA blends proceeded in several stages. The first stage (T max in the range of 121–137 °C corresponding to 2–3% of mass loss) may be related to the evaporation of residual solvents, moisture and unreacted monomers [ 38 , 39 ]. Subsequent maxima of the rate of mass loss (i.e., T max = 245–258 °C with 7–12% of mass loss and T max = 301–320 °C with 55–64% of mass loss) are probably responsible for the degradation of EGDMA, while the maximum rate of mass loss at T max (temperature range of 396–442 °C and 19–27% of mass loss) is related to the distribution of the fragments derived from MMA.…”

Section: Resultsmentioning

confidence: 99%

“…The heat capacity of these transformations for the BPA.GDA blend series decreases with the increasing amount of PC in the material, while for the EGDMA blends the trend is reversed. As shown in the literature, the T g of pure PMMA ranges from 104 to 122 °C and depends on the molar mass of the obtained polymer [ 38 , 42 , 43 ], while the T m of the PMMA is approximately 72 °C [ 44 ]. The broad exothermic peaks (in fact it is a change in slope of curve that comes from an endothermic peak with T recryst at 101 and 107 °C) for BPA.GDA + MMA + 1% PC and BPA.GDA + MMA + 5% PC blends are responsible for the recrystallization of PMMA crystallites or with polymorphic changes in the crystal structure.…”

Section: Resultsmentioning

confidence: 99%

“… a, b, c The temperature of 5%, 10%, and 50% mass loss from the TGA curve, respectively; d The temperatures of the maximum rate of mass loss from the derivative TGA (DTG) curves; e Residual mass at 600 °C; f TG and DTG data from [ 38 ]. …”

Section: Figurementioning

confidence: 99%

“…For a more detailed analysis of the materials, the results of the thermogravimetric analysis for pure PC and PMMA were also performed. Residual mass at 600 °C; f TG and DTG data from [38].…”

Section: Thermogravimetric Analysismentioning

confidence: 99%

“…Thermogravimetric data of the obtained blends. The temperature of 5%, 10%, and 50% mass loss from the TGA curve, respectively; d The temperatures of the maximum rate of mass loss from the derivative TGA (DTG) curves; e Residual mass at 600 • C; f TG and DTG data from[38]. The temperature of 5%, 10%, and 50% mass loss from the TGA curve, respectively; d The temperatures of the maximum rate of mass loss from the derivative TGA (DTG) curves; e…”

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Preparation, Thermal, and Thermo-Mechanical Characterization of Polymeric Blends Based on Di(meth)acrylate Monomers

et al. 2021

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This study presents the preparation and the thermo-mechanical characteristics of polymeric blends based on di(meth)acrylates monomers. Bisphenol A glycerolate diacrylate (BPA.GDA) or ethylene glycol dimethacrylate (EGDMA) were used as crosslinking monomers. Methyl methacrylate (MMA) was used as an active solvent in both copolymerization approaches. Commercial polycarbonate (PC) was used as a modifying soluble additive. The preparation of blends and method of polymerization by using UV initiator (Irqacure® 651) was proposed. Two parallel sets of MMA-based materials were obtained. The first included more harmless linear hydrocarbons (EGDMA + MMA), whereas the second included the usually used aromatic copolymers (BPA.GDA + MMA). The influence of different amounts of PC on the physicochemical properties was discussed in detail. Chemical structures of the copolymers were confirmed by attenuated total reflection–Fourier transform infrared (ATR/FT-IR) spectroscopy. Thermo-mechanical properties of the synthesized materials were investigated by means of differential scanning calorimetry (DSC), thermogravimetric (TG/DTG) analyses, and dynamic mechanical analysis (DMA). The hardness of the obtained materials was also tested. In order to evaluate the surface of the materials, their images were obtained with the use of atomic force microscopy (AFM).

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Section: Thermogravimetric Analysismentioning

confidence: 99%

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Preparation, Thermal, and Thermo-Mechanical Characterization of Polymeric Blends Based on Di(meth)acrylate Monomers

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Sulfur in Dynamic Covalent Chemistry

Orrillo

Furlán

2022

Angewandte Chemie

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Sulfur has been important in dynamic covalent chemistry (DCC) since the beginning of the field. Mainly as part of disulfides and thioesters, dynamic sulfur‐based bonds (DSBs) have a leading role in several remarkable reactions. Part of this success is due to the almost ideal properties of DSBs for the preparation of dynamic covalent systems, including high reactivity and good reversibility under mild aqueous conditions, the possibility of exploiting supramolecular interactions, access to isolable structures, and easy experimental control to turn the reaction on/off. DCC is currently witnessing an increase in the importance of DSBs. The chemical flexibility offered by DSBs opens the door to multiple applications. This Review presents an overview of all the DSBs used in DCC, their applications, and remarks on the interesting properties that they confer on dynamic chemical systems, especially those containing several DSBs.

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Superchaotropic Boron Clusters as Membrane Carriers for the Transport of Hydrophilic Cargos

Guo

2022

Angewandte Chemie

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Design of membrane transporters is important in pharmaceutical drug delivery and bioimaging. Traditionally, the amphiphilic transport mechanism has governed the design of membrane carriers over the last 50 years. Recently, Montenegro, Nau and co‐workers discarded classical amphiphilic models and proposed a new transport principle based on the chaotropic effect. They utilized globular boron clusters as membrane carriers to transport a broad range of hydrophilic cargo. Herein, we highlight this recent pioneering work, which is a landmark for membrane transport.

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Polymer side-chain modification in methacrylate and styrene copolymers through thiol-thioester dynamic exchange

Cited by 12 publications

References 58 publications

Preparation, Thermal, and Thermo-Mechanical Characterization of Polymeric Blends Based on Di(meth)acrylate Monomers

Preparation, Thermal, and Thermo-Mechanical Characterization of Polymeric Blends Based on Di(meth)acrylate Monomers

Sulfur in Dynamic Covalent Chemistry

Superchaotropic Boron Clusters as Membrane Carriers for the Transport of Hydrophilic Cargos

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