Enzyme mimetic-catalyzed ATRP and its application in block copolymer synthesis combined with enzymatic ring-opening polymerization

RSC Advances ◽  
2015 ◽  
Vol 5 (53) ◽  
pp. 42728-42735 ◽  
Author(s):  
Hang Zhou ◽  
Wei Jiang ◽  
Ni An ◽  
Qiuping Zhang ◽  
Shidong Xiang ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Ring Opening ◽  
Functional Polymers ◽  
Ring Opening Polymerization ◽  
Enzyme Mimetic

Use of an enzyme mimetic (DhHP-6) as an ATRP catalyst for the synthesis of a series of functional polymers.

One-pot synthesis of PLA-b-PHEA via sequential ROP and RAFT polymerizations

2017 ◽  
Vol 8 (39) ◽  
pp. 6086-6098 ◽  
Author(s):  
Ilknur Yildirim ◽  
Pelin Sungur ◽  
Anna C. Crecelius-Vitz ◽  
Turgay Yildirim ◽  
Diana Kalden ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Ring Opening ◽  
Raft Polymerization ◽  
Ring Opening Polymerization ◽  
One Pot ◽  
One Pot Synthesis

A block copolymer library of polylactide and poly(2-hydroxyethyl acrylate) was prepared via sequential ring opening polymerization and RAFT polymerization in a one-pot approach.

Towards novel functional polymers: Ring-opening polymerization of l-lactide with p-tert-butylthiacalix[4]arene derivatives

2020 ◽  
Vol 150 ◽  
pp. 104546 ◽  
Author(s):  
Vladimir V. Gorbachuk ◽  
Pavel L. Padnya ◽  
Olga A. Mostovaya ◽  
Alexander V. Gerasimov ◽  
Ivan I. Stoikov
Keyword(s):  
Ring Opening ◽  
Functional Polymers ◽  
Ring Opening Polymerization

Preparation of Anti-Fouling Poly(Lactic Acid)(PLA) Hollow Fiber Membranes via Non-Solvent Induced Phase Separation

2014 ◽  
Vol 884-885 ◽  
pp. 112-116
Author(s):  
Peng Shen ◽  
Kai Tu ◽  
Chang Yu Yang ◽  
Jian Li ◽  
Ru Xu Du
Keyword(s):  
Contact Angle ◽  
Lactic Acid ◽  
Phase Separation ◽  
Block Copolymer ◽  
Water Permeability ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Hollow Fibers ◽  
Poly Lactic Acid ◽  
Bsa Rejection

Anti-fouling PLA hollow fibers were fabricated using synthesized PLA-PEG-PLA copolymer as an additive to improve the hydrophilicity. The tri-block copolymer was prepared by ring-opening polymerization and a hydrophilic copolymer processing good compatibility with PLA molecule was obtained and utilized to fabricate membrane with PLA by NIPS. Elemental analysis showed that PLA-PEG-PLA could stably exist in membranes and endow the membrane with persistent hydrophilic. Thus the contact angle decreased nearly 20o with 5% PLA-PEG-PLA content, resulting in higher water permeability and BSA rejection which indicated the anti-fouling property of PLA membrane was improved.

scholarly journals Functional biodegradable polymers via ring-opening polymerization of monomers without protective groups

2018 ◽  
Vol 47 (20) ◽  
pp. 7739-7782 ◽  
Author(s):  
Greta Becker ◽  
Frederik R. Wurm
Keyword(s):  
Biodegradable Polymers ◽  
Ring Opening ◽  
Functional Polymers ◽  
Ring Opening Polymerization ◽  
Protective Groups

Functional polymers are reviewed which are accessible by the polymerization of reactive monomers. Their synthesis, polymerization, and post-polymerization modification are discussed.

Synthesis of miktoarm star-shaped and inverse star-block copolymers by a combination of ring-opening polymerization and click chemistry

e-Polymers ◽  
2018 ◽  
Vol 18 (6) ◽  
pp. 559-568 ◽  
Author(s):  
Xiaoqi Yan ◽  
Jianbo Li ◽  
Tianbin Ren
Keyword(s):  
Block Copolymer ◽  
Ring Opening ◽  
Click Reaction ◽  
Ring Opening Polymerization ◽  
Structure And Properties ◽  
Star Block Copolymer ◽  
Ft Ir ◽  
Miktoarm Star ◽  
Star Block Copolymers ◽  
Ft Ir Spectroscopy

AbstractBased on the combination of the “arm-first” and “core-first” strategies, the miktoarm star-shaped copolymer PLLA2PCL2 and the inverse star-block copolymer (PCL-b-PLLA)2-core-(PCL-b-PLLA)2 were designed and synthesized by the combination of ring-opening polymerization (ROP) and a click reaction. The miktoarm star-shaped copolymer PLLA2PCL2 was synthesized by a click reaction of an azido macroinitiator PLLA2(N3)2 and HC≡C-PCL. The inverse star-block copolymer (PCL-b-PLLA)2-core-(PCL-b-PLLA)2 was synthesized by a click reaction of an azido macroinitiator (PCL-b-PLLA)2(N3)2 and HC≡C-PCL-b-PLLA. The structures of these star polymers were confirmed by nuclear magnetic resonance (NMR), Fourier-transform infrared (FT-IR) spectroscopy and gel permeation chromatograph (GPC). The inverse star-block copolymer could be used to study the potential relationship between polymer structure and properties, which has a unique structure and good crystallization properties.

Star-Shaped Poly (Γ-Caprolactone-b-Ethylene Glycol): Synthesis, Characterization and Aggregation Behavior

2007 ◽  
Vol 342-343 ◽  
pp. 725-728
Author(s):  
Yu Jiang Fan ◽  
Jie Liang ◽  
Guo Ping Chen ◽  
Tetsuya Tateishi ◽  
Zhong Wei Gu ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Block Copolymer ◽  
Ethylene Glycol ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Aggregation Behavior ◽  
Step Process ◽  
Structure Factors ◽  
Aggregation Behaviors ◽  
Linear Block

Linear and Star-shaped PCL-b-PEG copolymers were synthesized through a two step process, including the first step to synthesize the star-shaped PCL through ring-opening polymerization of Γ-caprolactone initiated from multi-functional alcohol under the existence of tin(II) ethylhexanoate [Sn(Oct)2] catalyst, and the following step to couple the obtained star-shaped PCL with PEG segments using bi-functional linker. The structure of the polymers was confirmed by IR, NMR, GPC, et al. The aggregation behaviors of the star-shape copolymers were compared with that of the linear block copolymer with corresponding molecular weight of each arm, and the influences of structure factors were discussed.

Self-Assembly of Amphiphilic Block Copolymer in Aqueous Solutions Tuned by Host-Guest Inclusion Complexation

2012 ◽  
Vol 487 ◽  
pp. 663-667
Author(s):  
Yu Long Shuai ◽  
Mi Zhou ◽  
Xin Qian
Keyword(s):  
Block Copolymer ◽  
Self Assembly ◽  
Ring Opening ◽  
Chain Transfer ◽  
Gene Transfection ◽  
Inclusion Complexation ◽  
Ring Opening Polymerization ◽  
Isopropyl Acrylamide ◽  
Reversible Addition ◽  
Copolymer Poly

The block copolymer poly (ε-caprolactone)-b-poly (N-isopropyl acrylamide) (PCL-b-PNIPAM) is synthesized via the combination of ring-opening polymerization (ROP) and reversible addition-fragmentation chain transfer (RAFT). PCL-b-PNIPAM can self-assemble into the micelles taking PCL as the cores and PNIPAM as the shells. Add α-CD into the micelles, because the inclusion complexation of α-CD to PCL chains and phenols is stronger than that to PCL, to regulate the hydrophilic and hydrophobic features of PCL chain. So PCL-b-PNIPAM block copolymers have potential application in drug delivery and gene transfection.

scholarly journals Degradable vinyl copolymers through thiocarbonyl addition–ring-opening (TARO) polymerization

2019 ◽  
Vol 55 (1) ◽  
pp. 55-58 ◽  
Author(s):  
Nathaniel M. Bingham ◽  
Peter J. Roth
Keyword(s):  
Ring Opening ◽  
Functional Polymers ◽  
Ring Opening Polymerization ◽  
Radical Ring

Radical ring-opening polymerization of a thionolactone gives degradable thioester-functional polymers.

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