A vitrimer has covalent cross-links that preserve network connectivity but permit topology fluctuations through dynamic exchange reactions. In this work, we investigate the linear rheology of polybutadiene (PB) vitrimers bearing via dioxaborolane metathesis. PB are cross-linked in solution using photoinitiated thiol-ene click chemistry. As targeted cross-link density is increased, both insoluble fraction and glass-transition temperature increase. Linear viscoelasticity studied a combination...

Vitrimers are polymer networks that undergo structural rearrangement through dynamic associative bond exchange without compromising overall topological connectivity. In this study, we investigate the impact of cross-link density on structural, viscoelastic, and glass transition properties both vitrimer permanent networks. We synthesized polybutadiene (PB) using a photo-initiated thiol-ene click reaction to incorporate either dioxaborolane or 1,4-benzenedimethanethiol cross-links, with number...

We develop a two-stage computational method to assimilate linear viscoelastic material functions (LMFs), viz., stress relaxation modulus, creep compliance, and the complex by inferring consensus discrete spectrum (DRS) that simultaneously fits all three LMFs. In first stage, DRS corresponding different LMFs is deduced independently, before they are combined heuristically generate an initial guess for DRS. second this refined using nonlinear least squares regression. The effectiveness of data...

Abstract Polymerization induced self‐assembly (PISA) is an in situ method for producing block copolymer nanoparticles. Performing PISA the presence of a pharmaceutical drug causes nanoparticles to encapsulate drug. While this approach straightforward, effects loading and composition remain unclear. Here, we investigate encapsulation phenylacetic acid (PA) poly(glycerol monomethacrylate)‐ ‐poly(2‐hydroxypropyl methacrylate) (PGMA‐PHPMA) during PISA. Nanoparticle morphology characterized by...

Vitrimers are polymer networks connected by associative cross-links – covalent linkages that maintain network connectivity but exchange through reversible chemical reactions. Associative significantly change the dynamics of molten polymer. This study focuses on linear viscoelasticity polystyrene vitrimers (PS-v) bearing imine cross-links. PS-v samples were prepared condensation between precursor copolymers with pendant aldehydes and 1,6-hexanediamine cross-linker. The number average...

A vitrimer has covalent cross-links that preserve network connectivity but permit topology fluctuations through dynamic exchange reactions. In this work, we investigate the linear rheology of polybutadiene (PB) vitrimers bearing via dioxaborolane metathesis. PB are cross-linked in solution using photoinitiated thiol-ene click chemistry. As targeted cross-link density is increased, both insoluble fraction and glass transition temperature increase. Linear viscoelasticity studied a combination...

A vitrimer has covalent cross-links that preserve network connectivity but permit topology fluctuations through dynamic exchange reactions. In this work, we investigate the linear rheology of polybutadiene (PB) vitrimers bearing via dioxaborolane metathesis. PB are cross-linked in solution using photoinitiated thiol-ene click chemistry. As targeted cross-link density is increased, both insoluble fraction and glass transition temperature increase. Linear viscoelasticity studied a combination...