Monitoring a polycycloaddition by the combination of dynamic rheology and FTIR spectroscopy

Darsy, Guillaume; Bouzat, Fabien; Muňoz, Mariana; Lucas, Romain; Foucaud, Sylvie; Diogo, Cristina Coelho; Babonneau, Florence; Leconte, Y.; Maı̂tre, Alexandre

doi:10.1016/j.polymer.2015.10.030

Cited by 12 publications

(6 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, the increase in the carbonyl peak (δ around 172.7 ppm) might refer to the Ser/Gln/Asp of the IK peptide added. Instead, the peak of SF carbonyl groups (δ around 56.1 ppm) 27 results higher than that of BMS because of the presence of Ser/Tyr in the SF molecule, whereas the peak of carbonyl/carboxylic groups (δ around 172.7 ppm) 28 of BMS is higher than that of SF because of the presence of Asn/Gln/Asp/Glu amino acids in BMS after the conjugation of the Col(IV).…”

Section: ■ Materials and Methodsmentioning

confidence: 93%

A Bio-inspired Multifunctionalized Silk Fibroin

Santi

Mancini

Dirè

et al. 2021

ACS Biomater. Sci. Eng.

View full text Add to dashboard Cite

A bio-inspired multifunctionalized silk fibroin (BMS) was synthesized in order to mimic the interaction of nidogen with the type IV collagen and laminin of basement membranes. The designed BMS consists of a motif of laminin αchain-derived, called IK peptide, and type IV collagen covalently bound to the silk fibroin (SF) by using EDC/NHS coupling and a Cu-free click chemistry reaction, respectively. Silk fibroin was chosen as the main component of the BMS because it is versatile and biocompatible, induces an in vivo favorable bioresponse, and moreover can be functionalized with different methods. The chemical structure of BMS was analyzed by using X-ray photoelectron spectroscopy, attenuated total reflection−Fourier transform infrared, cross-polarization magic angle spinning nuclear magnetic resonance techniques, and colorimetric assay. The SF and BMS solutions were cross-linked by sonication to form hydrogels or casted to make films in order to evaluate and compare the early adhesion and viability of MRC5 cells. BMS hydrogels were also characterized by rheological and thermal analyses.

show abstract

Section: ■ Materials and Methodsmentioning

confidence: 93%

A Bio-inspired Multifunctionalized Silk Fibroin

Santi

Mancini

Dirè

et al. 2021

ACS Biomater. Sci. Eng.

View full text Add to dashboard Cite

show abstract

“…Moreover, as expected, the stretching vibration of the C=C in TAS as well as the stretching vibration of Si-H were consumed during the polymerisation reaction. To check the homogeneity of monomer conversion across different positions of the geometry [10], an investigation was performed by varying distances across the radius of the plates, namely, P0, P1 and P2, at 0, 5 and 10 mm, respectively (Figure S2). A timedependent oscillatory test was carried out with a frequency set at 35 Hz and a strain at 0.5%.…”

Section: To the Optimisation Of A New Coupling Instrumentationmentioning

confidence: 99%

“…Since then, two other studies have been published, first, on a reversible Diels–Alder crosslinking reaction in a polymer network, and secondly, on the improvement of the thermal and rheological behaviours of poly(3-hydroxybutyrate) by adding tannic acid [ 8 , 9 ]. More recently, we reported the use of a rheometer coupled to an IR spectrometer, to monitor the polymerisation of hyperbranched polycarbosilanes [ 10 , 11 ]. In addition to the interesting results obtained by this coupling device in terms of polymerisation kinetics and rheological behaviour, a difference in the polymer growth was assumed between the wall (where the diamond window of the ATR detector is positioned) and inside the sample.…”

Section: Introductionmentioning

confidence: 99%

Contribution of Dynamic Rheology Coupled to FTIR and Raman Spectroscopies to the Real-Time Shaping Ability of a Hyperbranched Polycarbosilane

Dhondoo,

Cornette,

Foucaud

et al. 2023

Molecules

Self Cite

View full text Add to dashboard Cite

In the field of non-oxide ceramics, the polymer-derived ceramic (PDC) approach appears to be very promising, especially for obtaining easily shaped and homogeneous materials in terms of structure and composition. However, in order to reach a suitable form during the process, it is often necessary to study the rheology of preceramic polymers while they are modified during polymerisation or crosslinking reactions. Given this need in the understanding of the real-time rheology of macromolecules during their synthesis, a rheometer coupled with both an infrared spectrometer and a Raman probe is described as a powerful tool for monitoring in situ synthesised polycarbosilanes. Indeed, this original device allows one to control the viscosity of a hyberbranched polycarbosilane from defined difunctional and tetrafunctional monomers. Meanwhile, it links this evolution to structural modifications in the macromolecular structure (molar masses, dispersity and conformation), based on SEC-MALS analyses, synchronised by the monomer conversion determined by using Raman and infrared spectroscopies, a common denominator of the aforementioned instrumental platform.

show abstract

“…Various chemical reactions can be used to prepare SiC macromolecular precursors, and among them the hydrosilylation reaction is of great interest, leading to polymers with only Si, C and H elements in their structure. More particularly, dendritic and hyperbranched structures have attracted a lot of attention, but few studies were performed on the rheological behaviour of such macromolecular materials, especially during their synthesis by monitoring their complex transformation . Particularly, the ability to synthesize gel‐like polymers with controlled kinetics could be very useful for generating porous ceramics or aerogels …”

Section: Introductionmentioning

confidence: 99%

“…More particularly, dendritic and hyperbranched structures have attracted a lot of attention, [9][10][11][12][13][14][15][16][17][18][19] but few studies were performed on the rheological behaviour of such macromolecular materials, especially during their synthesis by monitoring their complex transformation. [11,20] Particularly, the ability to synthesize gel-like polymers with controlled kinetics could be very useful for generating porous ceramics or aerogels. [21,22] In this paper, an effective route is proposed for the synthesis of a hyperbranched polycarbosilane (hb-PCS), using di-and tetrafunctional monomers.…”

Section: Introductionmentioning

confidence: 99%

Rheological and thermal behaviours of a hyperbranched polycarbosilane

Piriou

Viers

Lucas

et al. 2018

Applied Organom Chemis

Self Cite

View full text Add to dashboard Cite

A hyperbranched polymer, a precursor of silicon carbide (SiC), was successfully synthesized using a hydrosilylation reaction with Karstedt's catalyst. This reaction was optimized with the use of a rheometer coupled with an infrared spectrometer. The polymeric precursor was characterized using NMR and Fourier transform infrared spectroscopies, and dynamic rheology. The polymerization reaction was followed in situ by combined rheological and infrared measurements, indicating a gel‐like behaviour for alkene conversions higher than 0.55. Overall second‐order kinetics was determined for the hydrosilylation reaction. Pyrolysis at 1400 °C led to porous materials with β‐SiC and free carbon.

show abstract

Monitoring a polycycloaddition by the combination of dynamic rheology and FTIR spectroscopy

Cited by 12 publications

References 20 publications

A Bio-inspired Multifunctionalized Silk Fibroin

A Bio-inspired Multifunctionalized Silk Fibroin

Contribution of Dynamic Rheology Coupled to FTIR and Raman Spectroscopies to the Real-Time Shaping Ability of a Hyperbranched Polycarbosilane

Rheological and thermal behaviours of a hyperbranched polycarbosilane

Contact Info

Product

Resources

About