scholarly journals Terpenoid-derived conjugated dienes with exo-methylene and a 6-membered ring: high cationic reactivity, regioselective living cationic polymerization, and random and block copolymerization with vinyl ethers

2021 ◽  
Vol 12 (9) ◽  
pp. 1186-1198
Author(s):  
Takenori Nishida ◽  
Kotaro Satoh ◽  
Masazumi Tamura ◽  
Yingai Li ◽  
Keiichi Tomishige ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Cationic Polymerization ◽  
Conjugated Dienes ◽  
Membered Ring ◽  
Block Copolymerization ◽  
Vinyl Ethers ◽  
Living Cationic Polymerization

Biobased exo-methylene-conjugated dienes underwent regioselective living cationic polymerization to result in well-defined homo- and copolymers with good thermal properties.

scholarly journals Naturally-Derived Amphiphilic Polystyrenes Prepared by Aqueous Controlled/Living Cationic Polymerization and Copolymerization of Vinylguaiacol with R–OH/BF3·OEt2

Polymers ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1404 ◽  
Author(s):  
Hisaaki Takeshima ◽  
Kotaro Satoh ◽  
Masami Kamigaito
Keyword(s):  
Molecular Weight ◽  
Ferulic Acid ◽  
Cationic Polymerization ◽  
Living Polymerization ◽  
Block Copolymerization ◽  
Molecular Weights ◽  
Molecular Weight Distributions ◽  
Living Cationic Polymerization ◽  
Naturally Occurring ◽  
Weight Distributions

In this study, we investigated direct-controlled/living cationic polymerization and copolymerization of 4-vinylguaiacol (4VG), i.e., 4-hydroxy-3-methoxystyrene, which can be derived from naturally-occurring ferulic acid, to develop novel bio-based amphiphilic polystyrenes with phenol functions. The controlled/living cationic polymerization of 4VG was achieved using the R–OH/BF3·OEt2 initiating system, which is effective for the controlled/living polymerization of petroleum-derived 4-vinylphenol in the presence of a large amount of water via reversible activation of terminal C–OH bond catalyzed by BF3·OEt2, to result in the polymers with controlled molecular weights and narrow molecular weight distributions. The random or block copolymerization of 4VG was also examined using p-methoxystyrene (pMOS) as a comonomer with an aqueous initiating system to tune the amphiphilic nature of the 4VG-derived phenolic polymers. The obtained polymer can be expected not only to be used as a novel styrenic bio-based polymer but also as a material with amphiphilic nature for some applications.

Living cationic polymerization of vinyl ethers

1990 ◽  
Vol 32 (1) ◽  
pp. 181-197 ◽  
Author(s):  
Oskar Nuyken ◽  
Hubertus Kröner ◽  
Stefan Aechtner
Keyword(s):  
Cationic Polymerization ◽  
Vinyl Ethers ◽  
Living Cationic Polymerization

Transformation of Living Cationic Polymerization of Vinyl Ethers to RAFT Polymerization Mediated by a Carboxylic RAFT Agent

2011 ◽  
Vol 45 (2) ◽  
pp. 794-804 ◽  
Author(s):  
Shinji Sugihara ◽  
Kenta Yamashita ◽  
Keiji Matsuzuka ◽  
Isao Ikeda ◽  
Yasushi Maeda
Keyword(s):  
Cationic Polymerization ◽  
Raft Polymerization ◽  
Vinyl Ethers ◽  
Living Cationic Polymerization ◽  
Raft Agent
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