Synthesis and applications of triblock and multiblock copolymers using telechelic oligopropylene

Sasaki, Daisuke; Suzuki, Yushi; Hagiwara, Toshiki; Yano, Shoichiro; Sawaguchi, Takashi

doi:10.1016/j.polymer.2008.07.045

Cited by 23 publications

(17 citation statements)

References 28 publications

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“…Triblock copolymers: PS-iPP-PS and PMMA-iPP-PMMA were obtained by atom transfer radical polymerization of St and methyl methacrylate , respectively, using Br-iPP-Br. 27 It was confirmed that the PMMA-iPP-PMMA triblock copolymer was an effective additive as a compatibilizer for the PP/PMMA blend.…”

Section: Effects Of Additives and Catalystsmentioning

confidence: 84%

Development of materials and technologies for control of polymer recycling

Nishida

2011

Polym J

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The movement toward a recycling-based society through the essential development of recyclable materials alongside technologies for controlling recycling is reviewed. Recently, there has been progress in producing various polymers and technologies with the aim of achieving circulative utilization. For example, the upgrade recycling of commodity plastics, selective transformation of engineering plastics, selective depolymerization of various polymers in supercritical fluids, crosslinking-decrosslinking control using reversible reactions and developments in biomass-based recyclable polymers. Despite great strides taken in the effectiveness, efficiency and precision of these polymers and technologies, further improvements will be required to meet the practical requirements of a responsible sustainable system for the recycling of containers, packages, electric household appliances and end-of-life vehicles all of which are operated in compliance with the recycling laws of Japan.

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Section: Effects Of Additives and Catalystsmentioning

confidence: 84%

Development of materials and technologies for control of polymer recycling

Nishida

2011

Polym J

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“…Block copolymers, a type of polymeric material composed of at least two distinct polymer blocks, exhibit properties that are unmatched by other polymers [5–7] . While diblock copolymers are the easiest to synthesize, triblock and multiblock copolymers display even more attractive properties [8–10] . For instance, triblock and multiblock copolymers showed superior capability on modifying interface in polymer blends, an attribute that could be useful in addressing current polyolefin recycling challenges [11, 12] .…”

Section: Figurementioning

confidence: 99%

“…[5][6][7] While diblock copolymers are the easiest to synthesize, triblock and multiblock copolymers display even more attractive properties. [8][9][10] For instance, triblock and multiblock copolymers showed superior capability on modifying interface in polymer blends, an attribute that could be useful in addressing current polyolefin recycling challenges. [11,12] The unique properties of block copolymers, combined with the continuing development of living polymerization techniques, have resulted in an explosion of research projects involving block copolymers.…”

mentioning

confidence: 99%

“…Motivated by the importance of the number of blocks and their sequences, triblock polymers incorporating PP as the midblock have been identified as promising materials. [10] A few rare examples of reactions have been reported to achieve this synthesis with moderate selectivity and yield. These example include the degradation of high molecular weight PP, [31][32][33][34] and living polymerization initiated by a binuclear catalyst derived from V(acac) 3 /AlEt 2 Cl system.…”

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confidence: 99%

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Amphiphilic Triblock Copolymers Containing Polypropylene as the Middle Block

Yan

Guironnet

2020

Angewandte Chemie

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The synthesis of stereoregular telechelic polypropylene (PP) and their use to access triblock amphiphilic copolymers with the PP block located in the center is described. The strategy consists of selectively copolymerizing propylene and a di-functional co-monomer (1,3-diisopropenylbenzene) to yield a a,w-substituted polypropylene. Initiation of the copolymerization favors insertion of DIB over propylene; propagation steps favor insertion of propylene. Termination via a chain-transfer reaction yields the terminal unsaturation of the polymer. The telechelic polypropylene is then converted into a,w-hydroxyl-terminated polypropylene and used as a macroinitiator for the synthesis of triblock copolymers. Water-soluble amphiphilic triblock polymers are also synthesized. The use of catalytic reactions simultaneously provides the stereocontrol of the polypropylene and high productivity (multiple chains of block copolymer per metal center).

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“…However, synthesis of block copolymers with olefins and hydroxy‐substituted monomers has not yet been investigated, although there are an extensive amount of researches in these decades using the combination of coordination–insertion polymerization of olefins and anionic polymerization of polar monomer . Moreover, the synthesis of ABA‐block or multiblock copolymer is also difficult because anionic polymerization chain end never promotes the coordination–insertion polymerization …”

Section: Introductionmentioning

confidence: 99%

Synthesis of a Multiblock Copolymer of cis‐1,4‐Polybutadiene and Poly(3‐buten‐1‐ol)

Tanaka

Kasai

Shinzawa

et al. 2014

Macro Chemistry & Physics

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Synthesis of a multiblock copolymer composed of cis‐1,4‐polybutadiene (PBd) segments and poly(3‐buten‐1‐ol) segments is performed via successive hydroboration and oxidation of cis‐1,4/syn‐1,2‐multiblock PBd. The ratio of functionalization can be controlled by changing the amount of the borane reagent. The obtained polymer shows two distinctive glass‐transition temperatures, which correspond to the cis‐1,4‐PBd block and the poly(3‐buten‐1‐ol) block. These thermal properties clearly show that the functionalization of the PBd proceeds keeping the elastic property derived from cis‐1,4 segment.

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Synthesis and applications of triblock and multiblock copolymers using telechelic oligopropylene

Cited by 23 publications

References 28 publications

Development of materials and technologies for control of polymer recycling

Development of materials and technologies for control of polymer recycling

Amphiphilic Triblock Copolymers Containing Polypropylene as the Middle Block

Synthesis of a Multiblock Copolymer of cis‐1,4‐Polybutadiene and Poly(3‐buten‐1‐ol)

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