Bonnevide, Marine; Jimenez, Andrew M.; Dhara, Deboleena; Phan, Trang N. T.; Malicki, Nicolas; Abbas, Zaid M.; Benicewicz, Brian; Kumar, Sanat K.; Couty, Marc; Gigmes, Didier; Jestin, Jacques published the artcile< Morphologies of Polyisoprene-Grafted Silica Nanoparticles in Model Elastomers>, Synthetic Route of 96-53-7, the main research area is morphol polyisoprene grafted silica nanoparticle model elastomer.
We control nanoparticle (NP) dispersion by leveraging the entropic and enthalpic effects associated with mixing silica NPs grafted with polyisoprene (PI) chains into matrixes of varying degrees of chem. dissimilarity. Previous work in this area has primarily focused on entropic factors alone, and hence, this work represents a significant advance over the current state-of-the-art. We show using a combination of transmission electron microscopy/small-angle X-ray scattering that mixing grafted particles with PI matrixes of identical microstructure yields dispersion states as found in the literature for such entropic systems. However, replacing the PI matrix chains with dissimilar matrixes leads to an introduction of enthalpic interactions that, in some cases, can drastically change the resulting morphol. In particular, while slightly different PI microstructures for the grafted and free chains only yield moderated differences, using styrene-butadiene copolymers as a matrix leads to a completely different behavior. In the last case, phase separation becomes more likely with the increasing graft length, while the PI system (whose behavior is dominated by entropic factors) shows the opposite behavior. Tuning the relative importance of enthalpic vs. entropic factors is thus another tool in controlling the self-assembled structure of NPs, which gives rise to enhanced macroscopic properties in the composite.
Macromolecules (Washington, DC, United States) published new progress about Agglomeration. 96-53-7 belongs to class thiazole, and the molecular formula is C3H5NS2, Synthetic Route of 96-53-7.
Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica