Facile approach to functionalizing polymers with specific chemical groups by an ozone treatment: Preparation of crosslinkable poly(vinylidene fluoride) possessing benzoxazine pendent groups

Liu, Ying‐Ling; Lin, Guo-Chain; Wu, Chuan‐Shao

doi:10.1002/pola.21925

Cited by 27 publications

(6 citation statements)

References 33 publications

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“…Common approaches have utilised appropriately functionalised POSS reagents to effect co‐reaction with the oxazine ring, such as vinyl groups and glycidyl ethers . Alongside the more numerous studies examining the effects of blending POSS with PBZ and its blends or copolymers such as bisoxazolines or epoxies is the use of benzoxazines as pendant groups within more flexible fluoropolymer films . Less common is the use of more sophisticated synthetic methodologies such as the use of click chemistry to introduce benzoxazine functionality into a POSS reagent, but a model POSS reagent with mixed functionality, allowing the potential for the formation of an A–B copolymer, has been reported .…”

Section: Introductionmentioning

confidence: 99%

Examining the thermal behaviour of novel aromatic polybenzoxazine blends containing an organophosphorous compound and polyhedral oligomeric silsesquioxane reagents

Kopsidas

Hamerton

2016

Polymer International

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2,2‐Bis(3,4‐dihydro‐3‐phenyl‐2H‐1,3‐benzoxazine)propane (BA‐a) is blended with various commercial polyhedral oligomeric silsesquioxane (POSS) reagents and an organophosphorous compound, bis(4‐hydroxyphenyl)phenylphosphine oxide (BPPO), at a range of loadings (1–10 wt%). The influence of the additives on the onset and rate of polymerisation of BA‐a is examined using differential scanning calorimetry. An initial screen of blends containing various additives (5 wt%) shows that a combination of aminoethylaminopropyl isobutyl POSS (AEAP) and BPPO has the greatest effect on reactivity with a reduction in reaction onset of some 65 K and an increase in glass transition temperature of 18 K when compared with the BA‐a homopolymer. The activation energy for the polymerisation of BA‐a containing 5 wt% AEAP is determined to be 84–88 kJ mol−1 (using Kissinger and Ozawa kinetic models), with a first‐order rate constant of 1.9 × 108 s−1. The thermal stability of the cured blends containing 5 wt% flame retardant is examined using thermogravimetric analysis, and both onset of degradation and char yield are increased by 15 K and 5%, respectively, when compared with the BA‐a homopolymer. © 2016 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Examining the thermal behaviour of novel aromatic polybenzoxazine blends containing an organophosphorous compound and polyhedral oligomeric silsesquioxane reagents

Kopsidas

Hamerton

2016

Polymer International

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“…In 1994, the synthesis and properties of crosslinked polybenzoxazines and their properties were first reported by Ning and Ishida 14. Since then, numerous articles have been published on monomeric benzoxazines,15–27 main‐chain type polybenzoxazine28–39 and side‐chain type polybenzoxazines 40–45. It is this high molecular weight polybenzoxazine precursors with side‐chain type structures that the current article aims at developing because high‐molecular weight precursors offer usual thermoplastic properties, such as good film forming ability and solubility in solvent for easy structural analysis.…”

Section: Introductionmentioning

confidence: 99%

Side‐chain type benzoxazine‐functional cellulose via click chemistry

Agag¹,

Vietmeier²,

Chernykh³

et al. 2012

J of Applied Polymer Sci

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A side‐chain type benzoxazine‐functional cellulose has been developed using click chemistry via the reaction of ethynyl‐monofunctional benzoxazine monomer and azide‐functional cellulose. The synthesis, crosslinking, and thermal properties of the benzoxazine‐functional cellulose are studied by NMR, FTIR, DSC, and TGA. The crosslinking reaction of the benzoxazine side‐chain unusually takes place at low‐temperatures in comparison to an ordinary benzoxazine resins. Upon crosslinking, the polymer shows high char yield of 40%, which is a marked improvement from a mere 4% of the unfunctionalized cellulose. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

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“…Boz‐BOA was synthesized in three steps as shown in Scheme . Nonpolar solvent, such as chloroform, toluene, and xylene, was regarded as appropriate solvent to synthesize benzoxazines in general 19, 20. However, because of the poor solubility of Boz‐2 in nonpolar solvent, DMF was added to 1,4‐dioxane as a cosolvent in this case.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of a novel benzoxazine‐containing benzoxazole structure and its high performance thermoset

Yang

2011

J of Applied Polymer Sci

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A novel benzoxazine containing benzoxazole structures (Boz-BOA) was synthesized and its thermoset [P(Boz-BOA)] was prepared. For comparison, another benzoxazine-based 4,4 0 -diamine diphenyl methane (Boz-MDA) was also synthesized using a simplified procedure. The structure of Boz-BOA and Boz-MDA was confirmed by Fourier transform infrared (FTIR) and 1 H-NMR. Using FTIR and differential scanning calorimetric scans method, the curing behavior of Boz-BOA was probed, and the structure of P(Boz-BOA) was addressed, which was similar to that of P(Boz-MDA). Data of dynamic mechanical analysis showed that P(Boz-BOA) exhibited a better modulus retention at high temperature than P(Boz-MDA), which was attributed to benzoxazole structure restricting the mobility of chains, even at high temperature. P(Boz-BOA) also exhibited high glass transition temperature (T g ), excellent thermal stability, and low coefficient of thermal expansion value at wide temperature range.

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Facile approach to functionalizing polymers with specific chemical groups by an ozone treatment: Preparation of crosslinkable poly(vinylidene fluoride) possessing benzoxazine pendent groups

Cited by 27 publications

References 33 publications

Examining the thermal behaviour of novel aromatic polybenzoxazine blends containing an organophosphorous compound and polyhedral oligomeric silsesquioxane reagents

Examining the thermal behaviour of novel aromatic polybenzoxazine blends containing an organophosphorous compound and polyhedral oligomeric silsesquioxane reagents

Side‐chain type benzoxazine‐functional cellulose via click chemistry

Synthesis of a novel benzoxazine‐containing benzoxazole structure and its high performance thermoset

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