Vinyl mercaptoethanol as a reactive monomer for the preparation of functional homo- and copolymers with (meth)acrylates

Abstract

In contrast to common more activated monomers (MAMs), such as (meth)acrylates or styrenes, vinyl thioethers remain a niche, despite their unique character featuring an electron rich vinyl moiety, which in...

Coordination of Noble Metals in Poly(vinyl mercaptoethanol) Particles Prepared by Precipitation/Emulsion Polymerization

“…Interestingly, the molar masses of the polymers (10 600 g mol −1 , 2 mol% initiator V‐50, 40 °C) are much lower compared to the polymers prepared in bulk (95 000 g mol −1 1 mol% initiator azobisisobutyronitrikle (AIBN), 55 °C). [ 59 ] The lower molar masses must be a consequence of either a retarded propagation rate or an increased termination rate. While water should enhance the propagation rate of radical polymerizations in homogenous solutions, [ 73 ] the precipitation might hamper the diffusion of monomer to the reactive chain end and increase the probability of termination reactions in the local confinement.…”

“…A decomposition temperature of approximately 270 °C and a glass transition temperature of about 15 °C (Table S9 and Figure S6, Supporting Information) were determined, which are close to the previous measured values for polymers prepared in bulk or solution. [ 59 ] The rather low glass transition might further correlate with the tendency of the particles to agglomerate and fuse together. Overall, stabilization of the particles proved to be difficult, which, as mentioned in the beginning, is mainly due to the amphiphilic character of the monomer and the resulting polymers.…”

“…VME has a similar reactivity as (meth)acrylates, but in comparison the vinyl group is considered electron rich. [ 59 ] Unfortunately, the low solubility of the polymer severely limits any possible applications. Establishing suitable conditions for heterogeneous polymerization processes has, therefore, further potential to circumvent this issue and create a processible material.…”

Polymers fromS-vinyl monomers: reactivities and properties

“…31,32,59,126 It has to be kept in mind that during this oxidation, properties of the polymers, such as solubility, thermal stability or glass transition temperature are significantly altered, which is related to the drastic change in polarity of the sulfur moiety. 127 As mentioned before, such polysulfoxides are very interesting for a variety of applications, and in 2008 Trofimov et al demonstrated the use of an aliphatic polyvinyl sulfoxide copolymer prepared by oxidation of the corresponding polyvinyl sulfide as a matrix for absorbing alkali metals (Scheme 11). 59 In this case, diethylene glycol divinyl ether and methyl vinyl sulfide were radically polymerized with AIBN to obtain a crosslinked polymer, which was subsequently oxidized with hydrogen peroxide to form the sulfoxide groups.…”

Molecular Structure and Properties of Sulfur‐Containing High Refractive Index Polymer Optical Materials

“…The hygroscopicity of the polymer is closely related to its structure. To reduce the moisture absorption rate, the hydrophilic groups in the molecular chain should be reduced, [ 74 ] such as sulfone group, carboxyl group, ether and so on.…”