Ring-Opening Polymerization of Cyclic Ester Monomers by Poly(propylene glycol) in the Presence of Monomer Activator and Examination of Triblock Copolymer Solution Properties

2011 ◽  
Vol 7 (6) ◽  
pp. 955-960 ◽  
Author(s):  
Jae Il Kim ◽  
Hwi Ju Kang ◽  
Doo Yeon Kwon ◽  
Bong Lee ◽  
Heung Jae Chun ◽  
...  
Keyword(s):  
Propylene Glycol ◽  
Ring Opening ◽  
Triblock Copolymer ◽  
Ring Opening Polymerization ◽  
Cyclic Ester ◽  
Solution Properties ◽  
Copolymer Solution ◽  
Poly Propylene

scholarly journals Bulk Modification of Poly(lactide) (PLA) via Copolymerization with Poly(propylene glycol) Diglycidylether (PPGDGE)

Polymers ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1184 ◽  
Author(s):  
Sandra Castillejos ◽  
Jorge Cerna ◽  
Francisco Meléndez ◽  
María Castro ◽  
Rocío Aguilar ◽  
...  
Keyword(s):  
Propylene Glycol ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Diglycidyl Ether ◽  
Scanning Calorimetry ◽  
Monomer Ratio ◽  
Angle Measurements ◽  
Contact Angle Measurements ◽  
Poly Propylene ◽  
Made In

Copolymers of l-lactide and poly(propylene glycol) diglycidyl ether (PPGDGE380) were synthesized by ring opening polymerization (ROP). Stannous octoate was used as the catalyst and 1-dodecanol as the initiator. The effect of the variables on the thermal properties of the copolymers was investigated by differential scanning calorimetry (DSC). Contact angle measurements were made in order to study the wettability of the synthesized copolymers. The copolymers differed widely in their physical characteristics, ranging from weak elastomers to tougher thermoplastics, according to the ratio of l-lactide and PPGDGE380. The results showed that the copolymers were more hydrophilic than neat Poly(lactide) (PLA) and the monomer ratio had a strong influence on the hydrophilic properties.

Chirality-Induced Catalyst Aggregation: Insights into Catalyst Speciation and Activity Using Chiral Aluminum Catalysts in Cyclic Ester Ring-Opening Polymerization

ACS Catalysis ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 4084-4093
Author(s):  
Sami Gesslbauer ◽  
George Hutchinson ◽  
Andrew J. P. White ◽  
Jordi Burés ◽  
Charles Romain
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Cyclic Ester

Organophosphate-catalyzed bulk ring-opening polymerization as an environmentally benign route leading to block copolyesters, end-functionalized polyesters, and polyester-based polyurethane

2015 ◽  
Vol 6 (24) ◽  
pp. 4374-4384 ◽  
Author(s):  
Tatsuya Saito ◽  
Yusuke Aizawa ◽  
Kenji Tajima ◽  
Takuya Isono ◽  
Toshifumi Satoh
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Cyclic Carbonate ◽  
Environmentally Benign ◽  
Cyclic Ester ◽  
Cyclic Esters

To expand the potential of an organophosphate catalyst, ring-opening polymerization of cyclic esters, cyclic ester-ether, and cyclic carbonate was demonstrated under bulk conditions.

Synthesis of Zwitterionic Chimeric Polymersomes for Efficient Protein Loading and Intracellular Delivery

2021 ◽  
Author(s):  
bingbing zhao ◽  
Yuting Yan ◽  
Junmei Zhang ◽  
Enping Chen ◽  
Ke Wang ◽  
...  
Keyword(s):  
Ring Opening ◽  
Triblock Copolymer ◽  
Chain Transfer ◽  
Raft Polymerization ◽  
Intracellular Delivery ◽  
Ring Opening Polymerization ◽  
H Nmr ◽  
Protein Loading ◽  
Reversible Addition

A novel zwitterionic triblock copolymer of poly(dimethylamino carbonate)-polycaprolactone-poly((2-(methacryloyloxy)ethyl)dimethyl-(3-sulfopropyl)ammonium) [PAC(DMA)-PCL-PMDMSA] was designed and synthesized via sequential ring-opening polymerization (ROP) and reversible addition-fragmentation chain transfer (RAFT) polymerization successively. The 1H NMR and...

Preparation of a P(THF-co-PO)-b-PB-b-P(THF-co-PO) triblock copolymer via cationic ring-opening polymerization and its use as a thermoset polymer

RSC Advances ◽  
2015 ◽  
Vol 5 (81) ◽  
pp. 66073-66081 ◽  
Author(s):  
Wanbin Zhang ◽  
Xiaodong Fan ◽  
Wei Tian ◽  
Heng Chen ◽  
Xiuzhong Zhu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Ring Opening ◽  
Triblock Copolymer ◽  
Dynamic Mechanical Properties ◽  
Ring Opening Polymerization ◽  
Dynamic Mechanical ◽  
Thermoset Polymer ◽  
Cationic Ring Opening Polymerization

Triblock copolymer P(THF-co-PO)-b-PB-b-P(THF-co-PO) with gradient copolyether segments was synthesized, and its elastomer exhibited excellent dynamic mechanical properties.

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