Synthesis of polyisoprene-poly(methyl methacrylate) block copolymers by using polyisoprene as a macro-iniferter

Kongkaew, A.; Wootthikanokkhan, Jatuphorn

doi:10.1007/s002890050618

Cited by 12 publications

(10 citation statements)

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“…An analysis of the obtained PI–PMMA block copolymer 1 H NMR spectra18, 37 (Fig. 2) indicates that the polymerization led to copolymers containing about 37% 1,4‐chain structures, 34% 3,4‐chain structures, and 29% 1,2‐chain structures.…”

Section: Resultsmentioning

confidence: 99%

“…Isoprene copolymers were previously obtained with anionic,4–13 cationic,14, 15 coordination,16, 17 and radical polymerization3, 4, 18, 19 techniques. Such copolymers are interesting because they can be used for rubber production, as effective compatibilizers for natural rubber/acrylic polymer blends,3, 19 and as potential materials for medical applications 20, 21…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of polyisoprene–poly(methyl methacrylate) block copolymers via a two‐electron‐transfer mechanism

Janeczek

2005

J. Polym. Sci. A Polym. Chem.

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Supramolecular complexes of alkali metals were used as catalysts in the polymerization of isoprene via a two‐electron‐transfer mechanism. The obtained polyisoprene, having a living end group, was subsequently used to initiate methyl methacrylate polymerization in tetrahydrofuran. Polyisoprene–poly(methyl methacrylate) block copolymers were obtained, and their structure was established with 1H NMR, gel permeation chromatography, differential scanning calorimetry, and experiments of selective extraction. © 2005 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 44: 1086–1092, 2006

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of polyisoprene–poly(methyl methacrylate) block copolymers via a two‐electron‐transfer mechanism

Janeczek

2005

J. Polym. Sci. A Polym. Chem.

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“…It was noticed that their MWD was considerably high because a bimolecular termination was not totally prevented, which implied a nontruly living mechanism. 15, 16 The highest yield of ISI obtained with 3.8 × 10 −3 mol/L of [PS–TD] for 10 h of UV irradiation was 26%. The results agreed well with the previous work in which the maximum yield of 25% of PI was obtained when the benzyl N,N ‐diethyldithiocarbamate (BDC) iniferter was used at 44 h irradiation time 15…”

Section: Resultsmentioning

confidence: 99%

Toughness enhancement of high‐impact polystyrene based on γ‐radiation vulcanized natural rubber latex by using block copolymer

Sangribsub

Tangboriboonrat

2002

J of Applied Polymer Sci

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Polyisoprene-block-polystyrene-block-polyisoprene (ISI) was synthesized by the iniferter route and its use, as compared to a commercial polystyrene-blockpolyisoprene-block-polystyrene (SIS), in the enhancement of the toughness of highimpact polystyrene (HIPS), prepared by the ␥-radiation vulcanized natural rubber (RVNR) latex/phase transfer/bulk polymerization technique, was investigated. Addition of 5% SIS was adequate as an interfacial agent, which effectively increased the unnotched Izod impact energy of HIPS, whereas use of 10% of ISI was required. A long polyisoprene block with two polystyrene segments of SIS was favorable for compatibilization of HIPS. Transmission electron micrographs revealed the uniform distribution of the block copolymer at the shell region of the rubber particle.

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“…As a result, the polyisoprene-based semiconductor polymers after cross-linking reaction via double bonds are expected to have no major disruption to its semiconducting properties. Since 1999, noteworthy advances in well-controlled polyisoprene or its block copolymer through living radical polymerization , and reversible addition–fragmentation chain transfer (RAFT) have been able to facilitate any material design strategy for chemically manipulating segments of PI.…”

Section: Introductionmentioning

confidence: 99%

Synthetic Concept of Intrinsically Elastic Luminescent Polyfluorene-Based Copolymers via RAFT Polymerization

Au‐Duong

et al. 2020

Macromolecules

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An easy and novel synthetic concept for building intrinsically stretchable and elastic semiconducting polymers is designed in this study, in which a conjugated rod−coil block copolymer with a rigid poly(9,9-di-n-octyl-2,7-fluorene) (PFO)conjugated rod and soft poly(isoprene) (PI) coils were utilized as model compounds for demonstration. By combining a coupling reaction for a conjugated block and reversible addition− fragmentation chain transfer for a functional soft block, a simplified synthetic procedure for semiconducting polymers incorporating different lengths of the PI moiety, PF-b-(PI) x (x = 0.9, 1.2, and 1.8), was thus developed. Upon intense mechanical stress, both their stretching and rubbery properties associated with highly stable luminescence were demonstrated because of the molecular-level rigid island structure of self-assembly nanostructured PF domains bridged by PI segments. In particular, the PF-b-PI 1.8 thin film could not only be stretched by up to 150% without forming any cracks but also be employed for the fabrication of free-standing films with both excellent elasticity and tough mechanical strength after cross-linking, showing high stability in quantum yield over 1000 stretching cycles at 150% strain.

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Synthesis of polyisoprene-poly(methyl methacrylate) block copolymers by using polyisoprene as a macro-iniferter

Cited by 12 publications

References 0 publications

Synthesis of polyisoprene–poly(methyl methacrylate) block copolymers via a two‐electron‐transfer mechanism

Synthesis of polyisoprene–poly(methyl methacrylate) block copolymers via a two‐electron‐transfer mechanism

Toughness enhancement of high‐impact polystyrene based on γ‐radiation vulcanized natural rubber latex by using block copolymer

Synthetic Concept of Intrinsically Elastic Luminescent Polyfluorene-Based Copolymers via RAFT Polymerization

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