Influence of the storage of reactive urethane quasi-prepolymers in their composition and adhesion properties

Daniel‐da‐Silva, Ana L.; Martı́n-Martı́nez, José Miguel; Bordado, João

doi:10.1016/j.ijadhadh.2007.03.002

Cited by 15 publications

(2 citation statements)

References 14 publications

(13 reference statements)

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“…These bands were observed in the reaction between polycaprolactone and 2-isocyanate ethylmethacrylate [36]. The -NH-bending of the urethane group was also detected by da Silva et al at the same wavenumber [37]. Furthermore, the C-O-C stretching was observed at 1089 cm -1 [34].…”

Section: Ftir Of the Pussupporting

confidence: 57%

New Biocompatible Polyurethanes: Synthesis, Structural Characterization and Cytotoxicity

Valdes¹,

Gomes²,

Gomes³

et al. 2018

Preprint

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The synthesis of four samples of new polyurethanes was evaluated by changing the ratio of the diol monomers used, poly(propylene glycol) (PPG) and D-isosorbide, in the presence of aliphatic isocyanates such as the isophorone diisocyanate (IPDI) and 4,4′-methylenebis(cyclohexyl isocyanate) (HMDI). The thermal properties of the four polymers obtained were determined by DSC, exhibiting Tg values in the range 55-70 ºC, and their molecular structure characterized by FTIR, 1H and 13C NMR spectroscopies. The diffusion coefficients of these polymers in solution were measured by the Pulse Gradient Spin Echo (PGSE) NMR method, enabling the calculation of the corresponding hydrodynamic radii in diluted solution (1.62–2.65 nm). The molecular weights were determined by GPC/SEC and compared with the values determined by quantitative 13C NMR analysis. Finally, the biocompatibility of the polyurethanes was assessed using the HaCaT keratinocyte cell line by the MTT reduction assay method showing values superior to 70% cell viability.

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Section: Ftir Of the Pussupporting

confidence: 57%

New Biocompatible Polyurethanes: Synthesis, Structural Characterization and Cytotoxicity

Valdes¹,

Gomes²,

Gomes³

et al. 2018

Preprint

View full text Add to dashboard Cite

show abstract

“…These bands were observed in the reaction between polycaprolactone and 2-isocyanate ethylmethacrylate [36]. The –NH– bending of the urethane group was also detected by da Silva et al at the same wavenumber [37]. Furthermore, C–O–C stretching was observed at 1089 cm −1 [34].…”

Section: Resultsmentioning

confidence: 80%

Synthesis and Characterization of Isosorbide-Based Polyurethanes Exhibiting Low Cytotoxicity Towards HaCaT Human Skin Cells

Valdes

Gomes

et al. 2018

Polymers

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The synthesis of four samples of new polyurethanes was evaluated by changing the ratio of the diol monomers used, poly(propylene glycol) (PPG) and D-isosorbide, in the presence of aliphatic isocyanates such as the isophorone diisocyanate (IPDI) and 4,4′-methylenebis(cyclohexyl isocyanate) (HMDI). The thermal properties of the four polymers obtained were determined by DSC, exhibiting Tg values in the range 55–70 °C, and their molecular structure characterized by FTIR, 1H, and 13C NMR spectroscopies. The diffusion coefficients of these polymers in solution were measured by the Pulse Gradient Spin Echo (PGSE) NMR method, enabling the calculation of the corresponding hydrodynamic radii in diluted solution (1.62–2.65 nm). The molecular weights were determined by GPC/SEC and compared with the values determined by a quantitative 13C NMR analysis. Finally, the biocompatibility of the polyurethanes was assessed using the HaCaT keratinocyte cell line by the MTT reduction assay method showing values superior to 70% cell viability.

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Polyurethane Building Blocks

Sonnenschein

2014

Polyurethanes

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Influence of the storage of reactive urethane quasi-prepolymers in their composition and adhesion properties

Cited by 15 publications

References 14 publications

New Biocompatible Polyurethanes: Synthesis, Structural Characterization and Cytotoxicity

New Biocompatible Polyurethanes: Synthesis, Structural Characterization and Cytotoxicity

Synthesis and Characterization of Isosorbide-Based Polyurethanes Exhibiting Low Cytotoxicity Towards HaCaT Human Skin Cells

Polyurethane Building Blocks

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