scholarly journals Synthesis of bio-based poly limonene oxide with green catalyst

2021 ◽  
pp. 271-280 ◽  
Author(s):  
Chahrazed Bendiabdallah ◽  
Fatiha Reguieg ◽  
Mohammed Belbachir
Keyword(s):  
Reaction Time ◽  
1H Nmr ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Green Catalyst ◽  
Sheet Silicate ◽  
Silicate Clay ◽  
Limonene Oxide ◽  
Cationic Ring Opening Polymerization

In the present work, the polymerization of limonene oxide (LO) catalyzed by Maghnite H+ (Mag- H+) is investigated. Mag-H+ is Algerian montmorillonite sheet silicate clay exchanged with protons. The poly limonene oxide (PLO) is obtained by cationic ring opening polymerization in bulk and with solvent. The effect of the reaction time, the temperature and the amount of catalyst are studied and discussed in order to find the optimal reactions conditions. The polymerization in solution at 0 °C with 5% by weight of catalyst leads to the best yield 61.34% for a reaction time of 1h. The structure of the obtained products is characterized by XRD, 1H-NMR, 13C-RMN, ATR-FTIR, DSC and TGA.

Ring-Opening Polymerization of Lactide Using Aluminum Salen-Type Initiators

2014 ◽  
Vol 915-916 ◽  
pp. 713-716
Author(s):  
Qing Zhang ◽  
Jing Tian ◽  
Zhi Qi Cao ◽  
Ru Xia Xu ◽  
Zhen Zhen Sun ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Infrared Spectroscopy ◽  
Reaction Time ◽  
Magnetic Resonance ◽  
Schiff Bases ◽  
Reaction Temperature ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Resonance Spectroscopy ◽  
Aluminum Complex

In this investigation, Schiff bases aluminum complex was synthesized and used as the initiator in the polymerization of D,L-lactide. The aluminum complex was characterized by infrared spectroscopy (IR), and nuclear magnetic resonance spectroscopy (NMR). The influences of different factors, including reaction time, reaction temperature, and the ratio of D, L-lactide/Al3+ on the synthesis of polylactide were described. The results showed that Schiff bases aluminum complex could be successfully applied in the ring opening polymerization. The optimum condition of the ring opening polymerization of D,L-lactide, which included D,L-lactide/Al3+ (mol/mol) ratio of 250, reaction temperature of 120 °C, and reaction time of 16 hours.

Formation of polyoxazoline-silica nanoparticles via the surface-initiated cationic polymerization of 2-methyl-2-oxazoline

2016 ◽  
Vol 7 (32) ◽  
pp. 5157-5168 ◽  
Author(s):  
G. Bissadi ◽  
R. Weberskirch
Keyword(s):  
Silica Nanoparticles ◽  
Cationic Polymerization ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Hybrid Nanoparticles ◽  
Cationic Ring Opening Polymerization ◽  
Silica Hybrid

The fabrication of silica hybrid nanoparticles by a surface-initiated cationic ring-opening polymerization of poly(2-methyl-2-oxazoline)s has been described.

Accelerated living cationic ring-opening polymerization of a methyl ester functionalized 2-oxazoline monomer

2015 ◽  
Vol 6 (4) ◽  
pp. 514-518 ◽  
Author(s):  
Petra J. M. Bouten ◽  
Dietmar Hertsen ◽  
Maarten Vergaelen ◽  
Bryn D. Monnery ◽  
Marcel A. Boerman ◽  
...  
Keyword(s):  
Methyl Ester ◽  
Ring Opening ◽  
Kinetic Studies ◽  
Ring Opening Polymerization ◽  
Cationic Ring Opening Polymerization

Kinetic studies on the homo- and copolymerization of 2-methoxycarboxyethyl-2-oxazoline with 2-methyl-2-oxazoline and 2-ethyl-2-oxazoline is discussed.

Influential Factors in the Synthesis of Polymethylhydrogenosiloxane Obtained via Cationic Ring-Opening Polymerization Using Synthetic Silica-Aluminates as Catalysts

Silicon ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 1059-1074
Author(s):  
J. A. González Calderón ◽  
David Contreras López ◽  
Javier Alejandro Balcázar Pérez ◽  
Adrián Austria Gutiérrez ◽  
Ricardo Mendoza-Carrizales ◽  
...  
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Influential Factors ◽  
Cationic Ring Opening Polymerization
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