Stereoselective polymerization of biosourced terpenes β-myrcene and β-ocimene and their copolymerization with styrene promoted by titanium catalysts

Naddeo, Marco; Buonerba, Antonio; Luciano, Ermanno; Grassi, Alfonso; Proto, Antonio; Capacchione, Carmine

doi:10.1016/j.polymer.2017.10.028

Cited by 50 publications

(57 citation statements)

References 39 publications

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“…The same problems appeared in the studies reported by Laur et al . and Naddeo et al . who copolymerized the myrcene with styrene.…”

Section: Introductionsupporting

confidence: 65%

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Bio‐based β‐myrcene‐modified solution‐polymerized styrene–butadiene rubber for improving carbon black dispersion and wet skid resistance

Zhang

et al. 2019

J of Applied Polymer Sci

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β-Myrcene, a bio-based monoterpene derived from plants, was introduced to replace butadiene in the solution-polymerized styrene-butadiene rubber by using the conventional anionic copolymerization technique. The anionic copolymerization of β-myrcene was found to be stoichiometric and controllable. A series of solution-polymerized styrene-myrcene-butadiene rubber (S-SMBR) with 100% conversion, high-molecular weight (150 000-200 000 Da), low polydispersity, and uniform compositions was obtained. The glass transition temperature of S-SMBR exhibited imperceptible variation with different myrcene/butadiene ratios. Interestingly, the introduction of such a long nonpolar pendant group containing isopropylidene could greatly improve carbon black dispersibility in the rubber. Furthermore, the wet skid resistance of the rubber could be improved without impairing its low rolling resistance. The tensile strength of S-SMBR was found to be higher than that prepared by radical emulsion copolymerization. The S-SMBR prepared by anionic solution copolymerization is thus a promising material for tires to attain sustainable development. HIGHLIGHTS• A bio-based monomer was successfully introduced to replace diene part in SBR through anionic polymerization.• Carbon black dispersibility in the rubber was greatly improved.• The wet skid resistance of the rubber could be improved without impairing its low rolling resistance.• Robust tensile behaviors were obtained compared with the rubber prepared by radical emulsion polymerization.

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“…The same problems appeared in the studies reported by Laur et al . and Naddeo et al . who copolymerized the myrcene with styrene.…”

Section: Introductionsupporting

confidence: 65%

“…In addition, crosslinked or branched products could easily produce gels, which would directly lead to lower performance of the rubber (with the mechanical performance at 6.4 MPa and the elongation at break at 396%) . Since 2015, some literatures have investigated the coordination copolymerization of myrcene. Liu et al .…”

Section: Introductionmentioning

confidence: 99%

Bio‐based β‐myrcene‐modified solution‐polymerized styrene–butadiene rubber for improving carbon black dispersion and wet skid resistance

Zhang

et al. 2019

J of Applied Polymer Sci

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“…Thin films of samples 1–5 were obtained by spin‐coating at room temperature of chloroform polymer solutions (30 μL, 0.2 wt%); the phase segregation in these samples was investigated using tapping mode AFM (TM‐AFM). This technique provides information about the topography of the sample as well as of the dislocation of the polymer phases . The height micrographs showed smooth surfaces (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…This technique provides information about the topography of the sample as well as of the dislocation of the polymer phases. 24,29,[35][36][37][38][39][40][41][42] The height micrographs showed smooth surfaces (Fig. 2) while the TM-AFM phase images (Fig.…”

Section: Resultsmentioning

confidence: 99%

Thin‐film nanostructure and polymer architecture in semicrystalline syndiotactic poly(p‐methylstyrene)–(cis‐1,4‐polybutadiene) multiblock copolymers

Buonerba

Monica

Speranza

et al. 2019

Polymer International

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The thin‐film morphology of stereoregular syndiotactic poly(p‐methylstyrene)–(cis‐1,4‐polybutadiene) (sP(pMS–B)) multiblock copolymers has been investigated using tapping mode atomic force microscopy with variation of the polymer composition and monomer block lengths. The morphology of the thin films ranges from isolated circular domains of sP(pMS) embedded into a matrix of polybutadiene (PB) to isolated domains of PB embedded into a matrix of sP(pMS), passing through bicontinuous (jagged) lamellae when the pMS concentration is in the range 20–67 mol%. Multiple folding of the polymer segments, i.e. where reciprocal inclusions of polymer segments to each other phase are able to generate greater domain, has been postulated and validated by considerations on the polymer architecture and the thermal and crystalline behaviour. © 2019 Society of Chemical Industry

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“…The thin film morphology of the sPS- b -PE copolymer has been investigated by TM-AFM. This technique has been widely adopted for the topological characterization of polymer surface as well as for identification of the distribution of the polymer phases on the base of their different mechanical properties [24,42,43,44,45,46,47]. The phase of oscillation of the probe of the AFM nanoscope responds to the stiffness of the surface, allowing the discrimination of chemical phases.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Syndiotactic Polystyrene-Polyethylene Block Copolymer

Lamparelli

Speranza

Camurati³

et al. 2019

Polymers

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The direct synthesis of syndiotactic polystyrene-block-polyethylene copolymer (sPS-b-PE) with a diblock structure has been achieved. The synthetic strategy consists of the sequential stereocontrolled polymerization of styrene and ethylene in the presence of a single catalytic system: cyclopentadienyltitanium(IV) trichloride activated by modified methylaluminoxane (CpTiCl3/MMAO). The reaction conditions suitable for affording the partially living polymerization of these monomers were identified, and the resulting copolymer, purified from contaminant homopolymers, was fully characterized. Gel permeation chromatography coupled with two-dimensional NMR spectroscopy COSY, HSQC, and DOSY confirmed the block nature of the obtained polymer, whose thermal behaviour and thin film morphology were also investigated by differential scanning calorimetry, powder wide angle x-ray diffraction, and atomic force microscopy.

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Stereoselective polymerization of biosourced terpenes β-myrcene and β-ocimene and their copolymerization with styrene promoted by titanium catalysts

Cited by 50 publications

References 39 publications

Bio‐based β‐myrcene‐modified solution‐polymerized styrene–butadiene rubber for improving carbon black dispersion and wet skid resistance

Bio‐based β‐myrcene‐modified solution‐polymerized styrene–butadiene rubber for improving carbon black dispersion and wet skid resistance

Thin‐film nanostructure and polymer architecture in semicrystalline syndiotactic poly(p‐methylstyrene)–(cis‐1,4‐polybutadiene) multiblock copolymers

Synthesis and Characterization of Syndiotactic Polystyrene-Polyethylene Block Copolymer

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