Jedrzejczyk, Monika A. published the artcileRenewable Thiol-yne “”Click”” Networks Based on Propargylated Lignin for Adhesive Resin Applications, Related Products of alcohols-buliding-blocks, the main research area is renewable thiolyne click network propargylated lignin adhesive resin.
In this study, the development of lignin-based resins for wood adhesion applications was demonstrated. We investigated two lignin fractions: com. Protobind 1000 lignin and methanol-soluble Protobind 1000 lignin fraction after mild solvolysis. Although lignin has previously been incorporated into various crosslinked systems, this is the first report on lignin-based thermosets obtained via thiol-yne “”click”” chem. In this approach, lignin was functionalized with terminal alkyne groups followed by crosslinking with a multifunctional thiol, resulting in polymeric network formation. The influence of the curing conditions on the resin characteristics and performance was studied, by varying the amount of reactive monomeric diluents. Addnl., a post-curing strategy utilizing the Claisen rearrangement was investigated. These resins were tested as a wood adhesive and were proven to possess a desirable performance, comparable to the state-of-art phenol-formaldehyde resins. Lignin-based thiol-yne resins turn out to be an alternative to phenol-formaldehyde resins, currently used as adhesives and coatings. Although it is possible to use lignin in phenol-formaldehyde resins, lignin addition is compromising the resin’s performance. The main benefits over the phenol-formaldehyde approach are that higher lignin loadings are possible to achieve, and no volatiles are emitted during the resin processing and use.
ACS Applied Polymer Materials published new progress about Adhesion, physical. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Related Products of alcohols-buliding-blocks.
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