Maruyama, Taiki published the artcileMultifunctional 3D Printing of Heterogeneous Polymer Structures by Laser-Scanning Micro-Stereolithography Using Reversible Addition-Fragmentation Chain-Transfer Polymerization, HPLC of Formula: 3052-61-7, the publication is ACS Applied Polymer Materials (2022), 4(8), 5514-5522, database is CAplus.
Stereolithog. is the most precise three-dimensional (3D) printing technol. and has been applied to various applications with various photocurable materials. However, most 3D-printed objects produced using conventional methods are made of uniform materials, limiting their functions. In this study, to produce heterogeneous 3D-printed objects, microphase-separated structures were controlled by the copolymerization of a photoinduced macro-reversible addition-fragmentation chain-transfer (macro-RAFT) agent and a monomer at different scanning speeds of an UV laser beam using a laboratory-constructed laser-scanning micro-stereolithog. system based on a bottom-up configuration in a fully open-to-air system. First, we demonstrated 3D printing using a RAFT agent by fabricating a pyramidal structure using a 375 nm laser. Copolymerization with styrene was performed to confirm that the synthesized poly(Bu acrylate) with dormant species at the end (DTC-PBA) formed block polymers upon photoirradiation NMR and gel permeation chromatog. (GPC) results indicated the formation of a block polymer. A homogeneous photocurable resin was prepared by mixing the synthesized DTC-PBA with multi-functional monomers, and 3D printing was performed using the prepared photocurable resin at different scanning speeds. As the scanning speed increased, the transparency of the 3D-printed model increased, whereas the mech. strength decreased. It was suggested from scanning probe microscopy (SPM) observations that these differences were due to differences in the microphase-separation structure. As a result, it was demonstrated that heterogeneous 3D structures with sites have different mech. and optical properties from those of a single material. Controlling the phys. properties of 3D-printed parts by controlling the laser irradiation conditions is useful for functionalizing 3D-printed microdevices.
ACS Applied Polymer Materials published new progress about 3052-61-7. 3052-61-7 belongs to esters-buliding-blocks, auxiliary class Amine,Benzene,Amide, name is Benzyl diethylcarbamodithioate, and the molecular formula is C12H17NS2, HPLC of Formula: 3052-61-7.
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https://en.wikipedia.org/wiki/Ester,
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