Propargylamine: An Attractive Amino Source for Designing High-Performance Benzoxazine Resins with Low Polymerization Temperatures

2021 ◽  
Author(s):  
Yu Liu ◽  
Weichen Sheng ◽  
Ren Yin ◽  
Kan Zhang
Keyword(s):  
Ring Opening ◽  
High Performance ◽  
Ring Opening Polymerization ◽  
Polymerization Temperature

Aniline is a very common amino source for benzoxazine synthesis, but generally resulting in relatively high ring-opening polymerization temperatures. The exploration of alternative amine sources to lower the polymerization temperature...

A Recommender System for Inverse Design of Polycarbonates and Polyesters

2020 ◽  
Author(s):  
Nathaniel Park ◽  
Dmitry Yu. Zubarev ◽  
James L. Hedrick ◽  
Vivien Kiyek ◽  
Christiaan Corbet ◽  
...  
Keyword(s):  
Ring Opening ◽  
High Performance ◽  
Recommendation System ◽  
Polymeric Materials ◽  
Monomer Conversion ◽  
Design Strategy ◽  
Ring Opening Polymerization ◽  
Inverse Design ◽  
False Negatives ◽  
Accelerate Development

The convergence of artificial intelligence and machine learning with material science holds significant promise to rapidly accelerate development timelines of new high-performance polymeric materials. Within this context, we report an inverse design strategy for polycarbonate and polyester discovery based on a recommendation system that proposes polymerization experiments that are likely to produce materials with targeted properties. Following recommendations of the system driven by the historical ring-opening polymerization results, we carried out experiments targeting specific ranges of monomer conversion and dispersity of the polymers obtained from cyclic lactones and carbonates. The results of the experiments were in close agreement with the recommendation targets with few false negatives or positives obtained for each class.<br>

A novel high performance oxazine derivative: design of tetrafunctional monomer, step-wise ring-opening polymerization, improved thermal property and broadened processing window

RSC Advances ◽  
2015 ◽  
Vol 5 (42) ◽  
pp. 33623-33631 ◽  
Author(s):  
Tong Zhang ◽  
Jun Wang ◽  
Tiantian Feng ◽  
Hui Wang ◽  
Noureddine Ramdani ◽  
...  
Keyword(s):  
Thermal Property ◽  
Ring Opening ◽  
High Performance ◽  
Condensation Reaction ◽  
Ring Opening Polymerization ◽  
Processing Window ◽  
Mannich Condensation ◽  
Oxazine Derivative ◽  
First Time ◽  
Tetrafunctional Monomer

A novel tetrafunctional oxazine monomer containing benzoxazine and fluorene-oxazine was prepared for the first time using a Mannich condensation reaction of 2,7-dihydroxy-9,9-bis-(4-hydroxyphenyl)fluorene with paraformaldehyde and n-butylamine.

Experiment Research on Influence Factors of Ring-Opening Polymerization in Making PDLLA

2011 ◽  
Vol 183-185 ◽  
pp. 1879-1882
Author(s):  
Song Liu ◽  
Li Na Sun
Keyword(s):  
Molecular Weight ◽  
Ring Opening ◽  
Influence Factors ◽  
Ring Opening Polymerization ◽  
Polymerization Temperature ◽  
Experiment Research ◽  
Time Duration ◽  
Vacuum Degree ◽  
Temperature Time ◽  
Polymerization Conditions

The paper research on the factors of the lactide polymerization, which primarily were ontology purity, dosage of initiator, polymerization temperature, time and vacuum degree, etc. According to the molecular weight measuring in different conditions of synthesis PDLLA, the results shows that, through the control of polymerization conditions higher molecular weight of PDLLA can obtain, main parameters as the quality ratio of initiator and monomers is about 0.03%, the polymerization temperature is 140°C, time duration is 48h and vacuum is 0.05 mmHg.

From polyester grafting onto POSS nanocage by ring-opening polymerization to high performance polyester/POSS nanocomposites

2010 ◽  
Vol 20 (42) ◽  
pp. 9415 ◽  
Author(s):  
Anne-Lise Goffin ◽  
Emmanuel Duquesne ◽  
Jean-Marie Raquez ◽  
Hans E. Miltner ◽  
Xiaoxing Ke ◽  
...  
Keyword(s):  
Ring Opening ◽  
High Performance ◽  
Ring Opening Polymerization ◽  
Grafting Onto

High performance benzoimidazolyl-based aminophenolate zinc complexes for isoselective polymerization of rac-lactide

2019 ◽  
Vol 55 (68) ◽  
pp. 10112-10115 ◽  
Author(s):  
Yanmei Gong ◽  
Haiyan Ma
Keyword(s):  
Ring Opening ◽  
High Performance ◽  
Ring Opening Polymerization ◽  
Zinc Complexes ◽  
Mild Conditions ◽  
Highly Active

A series of zinc complexes supported by achiral benzoimidazolyl-based aminophenolate ligands were employed as highly active initiators for the ring-opening polymerization of rac-lactide to afford highly isotactic polymers under mild conditions.

Properties of polymerized cyclic butylene terephthalate and its composites via ring-opening polymerization

2017 ◽  
Vol 31 (2) ◽  
pp. 181-201 ◽  
Author(s):  
Chun Yan ◽  
Ling Liu ◽  
Yingdan Zhu ◽  
Haibing Xu ◽  
Dong Liu
Keyword(s):  
Mechanical Properties ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Degree Of Crystallinity ◽  
Resin Matrix ◽  
Polymerization Temperature ◽  
Butylene Terephthalate ◽  
Cyclic Butylene Terephthalate ◽  
Electron Microscopy Analysis ◽  
Interlaminar Shear

Continuous glass fiber (GF)-reinforced polymerized cyclic butylene terephthalate (pCBT) composites were prepared via vacuum-assisted resin transfer molding using butyltin tris(2-ethylhexanoate) as the catalyst. The relationship between melt viscosity and polymerization time was examined in the ring-opening polymerization of CBT resin. The effects of polymerization conditions such as catalyst content and polymerization temperature on viscosity average molar mass ( Mv), crystallization, mechanical properties, and microstructure of GF/pCBT composites were also investigated in detail. It is found that both high molecular weight and high degree of crystallinity of resin matrix can lead to high mechanical properties of composites. The composites prepared with 0.5% catalyst at 190°C show the best mechanical properties with tensile strength of 549 MPa, flexural strength of 585.2 MPa, and interlaminar shear strength of 47.1 MPa. The scanning electron microscopy analysis also demonstrates that good interfacial adhesion exists between fiber and resin, which agrees very well with experimental results.

A Recommender System for Inverse Design of Polycarbonates and Polyesters

2020 ◽  
Author(s):  
Nathaniel Park ◽  
Dmitry Yu. Zubarev ◽  
James L. Hedrick ◽  
Vivien Kiyek ◽  
Christiaan Corbet ◽  
...  
Keyword(s):  
Ring Opening ◽  
High Performance ◽  
Recommendation System ◽  
Polymeric Materials ◽  
Monomer Conversion ◽  
Design Strategy ◽  
Ring Opening Polymerization ◽  
Inverse Design ◽  
False Negatives ◽  
Accelerate Development

The convergence of artificial intelligence and machine learning with material science holds significant promise to rapidly accelerate development timelines of new high-performance polymeric materials. Within this context, we report an inverse design strategy for polycarbonate and polyester discovery based on a recommendation system that proposes polymerization experiments that are likely to produce materials with targeted properties. Following recommendations of the system driven by the historical ring-opening polymerization results, we carried out experiments targeting specific ranges of monomer conversion and dispersity of the polymers obtained from cyclic lactones and carbonates. The results of the experiments were in close agreement with the recommendation targets with few false negatives or positives obtained for each class.<br>

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