2020
DOI: 10.1039/d0py00365d
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Morphological evolution and mechanical properties of an “anchor chain” nanodomain structure of a reactive amphiphilic triblock copolymer in epoxy resin

Abstract: A epoxy-reactive poly(3,4-epoxycyclohexylmethyl methacrylate)-block-poly(dimethylsiloxane)-block-poly(3,4-epoxycyclohexylmethyl methacrylate) (PMETHB-b-PDMS-b-PMETHB) triblock can self-assemble in epoxy resin to form “anchor-chain” nanodomains.

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Cited by 9 publications
(7 citation statements)
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“…Merging step growth processes and RDRP techniques is particularly appealing to develop advanced polymer materials as it affords the production of a number of interesting BCPs with vinylic and polycondensate segments (e.g., polystyrenes, polyacrylates, polymethacrylates, polyvinylesters vs polyesters, polysulfones, polyurethane, polyethers, and others) for diverse purposes, i.e., surface patterning or toughening brittle highly cross-linked polymers as pioneered by Bates in the late 90s . This last topic has been the subject of much research, ,, due to the variety of nanostructures that can be built and of mechanical behaviors that can be encountered. Different macromolecular architectures have been used as additives for epoxy resins in order to form nanoscale dispersed structures, such as spherical micelles, worm-like micelles, vesicles, or octopus-like nanostructures in epoxy matrix. , The nanostructural heterogeneities were considered to determine the physical properties of epoxy thermosets, which were continually used in a variety of applications such as coatings, adhesives, and structural composites .…”
Section: Introductionmentioning
confidence: 99%
“…Merging step growth processes and RDRP techniques is particularly appealing to develop advanced polymer materials as it affords the production of a number of interesting BCPs with vinylic and polycondensate segments (e.g., polystyrenes, polyacrylates, polymethacrylates, polyvinylesters vs polyesters, polysulfones, polyurethane, polyethers, and others) for diverse purposes, i.e., surface patterning or toughening brittle highly cross-linked polymers as pioneered by Bates in the late 90s . This last topic has been the subject of much research, ,, due to the variety of nanostructures that can be built and of mechanical behaviors that can be encountered. Different macromolecular architectures have been used as additives for epoxy resins in order to form nanoscale dispersed structures, such as spherical micelles, worm-like micelles, vesicles, or octopus-like nanostructures in epoxy matrix. , The nanostructural heterogeneities were considered to determine the physical properties of epoxy thermosets, which were continually used in a variety of applications such as coatings, adhesives, and structural composites .…”
Section: Introductionmentioning
confidence: 99%
“…Although the modulus in the rubbery region decreased with the addition of TBCP, the MWCNT as well as MWCNT- g -TBCP showed an improved modulus in the rubbery region as well. The reduction in modulus by the TBCP is due to its inherent plasticizing effect, but the nanostructures developed as a result of grafting enhance the modulus in the case of the grafted filler. ,,, The Tg values obtained from the tan δ curves further confirm the plasticizing nature of TBCP and thus show a decrease from 183.2 °C of neat epoxy to 174 °C. The incorporation of TBCP further enhanced the tan δ peak due to the enhanced dissipation of energy.…”
Section: Resultsmentioning
confidence: 67%
“…This structure was more effective for stress transmission in the matrix and improved fracture toughness. For EP/carboxyl-BCP, owing to the presence of the amine curing agent, the carboxyl-terminated BCP underwent self-assembly, followed by agglomeration in the early stage of the reaction, resulting in significant phase separation in the epoxy resin matrix [31,36,46].…”
Section: Fracture Surface Analysismentioning
confidence: 99%
“…However, the addition of these tougheners often decreases the storage modulus and glass transition temperature (Tg). Among the many toughening studies related to epoxy resin, research on nanodomain toughening agents in multi-BCPs has attracted the most attention [26][27][28][29][30][31][32][33][34][35][36]. Owing to their long-range ordered nanostructures, BCPs can generate dispersed nanodomains in epoxy resin, which can improve toughness while maintaining Tg and the storage modulus [37][38][39][40][41].…”
Section: Introductionmentioning
confidence: 99%