Polymyrcene microstructure revisited from precise high-field nuclear magnetic resonance analysis

Georges, Sébastien; Bria, Marc; Zinck, Philippe; Visseaux, Marc

doi:10.1016/j.polymer.2014.06.021

Cited by 44 publications

(38 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1 H and 13 C NMR analysis were used to determine the microstructure of the synthesized polymyrcene (Figures S5 and S6, Supporting Information). Polymyrcene synthesized using the NdCl 3 ⋅3TEP/TIBA catalytic system did not contain trans ‐1,4 incorporation, which was indicated by the absence of a peak at 131.6 ppm in the 13 C NMR (Figure S6, Supporting Information) …”

Section: Resultsmentioning

confidence: 99%

Neodymium Catalyst for the Polymerization of Dienes and Polar Vinyl Monomers

Kularatne

Yang

Nguyen

et al. 2017

Macromol. Rapid Commun.

View full text Add to dashboard Cite

Ziegler-Natta catalysts have played a major role in industry for the polymerization of dienes and vinyl monomers. However, due to the deactivation of the catalyst, this system fails to polymerize polar vinyl monomers such as vinyl acetate, methyl methacrylate, and methyl acrylate. Herein, a catalytic system composed of NdCl ⋅3TEP/TIBA is reported, which promotes a quasi-living polymerization of dienes and is also active for the homopolymerization of polar vinyl monomers. Additionally, this catalytic system generates polymyrcene-b-polyisoprene and poly(myrcene)-b-poly(methyl methacrylate) diblock copolymers by sequential monomer addition. To encourage the replacement of petroleum-based polymers by environmentally benign biobased polymers, polymerization of β-myrcene is demonstrated with a catalytic activity of ≈106 kg polymer mol Nd h .

show abstract

Section: Resultsmentioning

confidence: 99%

Neodymium Catalyst for the Polymerization of Dienes and Polar Vinyl Monomers

Kularatne

Yang

Nguyen

et al. 2017

Macromol. Rapid Commun.

View full text Add to dashboard Cite

show abstract

“…Signals in the 1 H NMR spectrum of the recovered poly(My) recorded in 1,1,2,2-tetrachloroethane-d 2 were assigned using the previously reported NMR data for poly(β-myrcene) samples [4,18]. Two distinct signals at δ 4.82 and 5.19 ppm revealed the presence of both 1,4-and 3,4-sequences (Figure 1).…”

Section: Homopolymerization Of Myrcene and Farnesenementioning

confidence: 95%

Stereoselective Copolymerization of Styrene with Terpenes Catalyzed by an Ansa-Lanthanidocene Catalyst: Access to New Syndiotactic Polystyrene-Based Materials

et al. 2017

View full text Add to dashboard Cite

Abstract:The copolymerization of bio-renewable β-myrcene or β-farnesene with styrene was examined using an ansa-neodymocene catalyst, affording two series of copolymers with high styrene content and unprecedented syndioregularity of the polystyrene sequences. The incorporation of terpene in the copolymers ranged from 5.6 to 30.8 mol % (β-myrcene) and from 2.5 to 9.8 mol % (β-farnesene), respectively. NMR spectroscopy and DSC analyses suggested that the microstructure of the copolymers consists of 1,4-and 3,4-poly(terpene) units randomly distributed along syndiotactic polystyrene chains. The thermal properties of the copolymers are strongly dependent on the terpene content, which is easily controlled by the initial feed. The terpolymerization of styrene with β-myrcene in the presence of ethylene was also examined.

show abstract

“…92–98 mol% 1,4‐addition is one of the best results that can be reached via radical polymerizations so far. Higher selectivities could be touched only via the not green, non‐controlled coordinative polymerizations . Here should be noted that even there the control was lost and irreversible dissociation of the CTA was found after six days of UV irradiation, the regioselectivity remained as high as 94.5 mol% as can be seen in Figure .…”

Section: Figurementioning

confidence: 85%

“…Myrcene is a common polymerizable monoterpene which was only recently polymerized by controlled radical polymerizations, such as reversible addition‐fragmentation chain transfer polymerization (RAFT), or nitroxide‐mediated radical polymerization (NMP) . The most significant advantage of these methods beyond their simplicity is that the produced polymers are not only controlled regarding molar mass or dispersity but also concerning regioselectivity, which was achieved previously only by non‐controlled polymerization using coordinative catalysts …”

Section: Figurementioning

confidence: 99%

Green Engineered Polymers: Solvent Free, Room‐Temperature Polymerization of Monomer From a Renewable Resource, Without Utilizing Initiator.

Niedner

Kali

2019

ChemistrySelect

View full text Add to dashboard Cite

To abolish the bad reputation of synthetic polymer chemistry, we aimed to produce green polymers in an environmentally friendly way. It is also essential to bypass the application of components from fossil resources; those are not only polluting but also expensive ones. As an addition, we want to form engineered polymers with predetermined chain lengths and copolymerization possibilities. In this paper, we polymerized a terpene using UV triggered reversible‐deactivation radical polymerization, in bulk. No use of components from fossil resources, no high energy nor any solvent consumption; all these together show the right way towards green polymers.

show abstract

Polymyrcene microstructure revisited from precise high-field nuclear magnetic resonance analysis

Cited by 44 publications

References 17 publications

Neodymium Catalyst for the Polymerization of Dienes and Polar Vinyl Monomers

Neodymium Catalyst for the Polymerization of Dienes and Polar Vinyl Monomers

Stereoselective Copolymerization of Styrene with Terpenes Catalyzed by an Ansa-Lanthanidocene Catalyst: Access to New Syndiotactic Polystyrene-Based Materials

Green Engineered Polymers: Solvent Free, Room‐Temperature Polymerization of Monomer From a Renewable Resource, Without Utilizing Initiator.

Contact Info

Product

Resources

About