Thermal characterization and thermal degradation of poly(norbornene-2,3-dicarboxylic acid dialkyl esters) synthesized by vinyl addition polymerization

Liu, Binyuan; Li, Yang; Kim, I.L.; Shin, Boo-Gyo; Yoon, Do Y.; Zhang, Li; Ji, Rongqin; Yan, Weidong

doi:10.1016/j.polymdegradstab.2007.01.029

Cited by 10 publications

(6 citation statements)

References 21 publications

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“…The thermal properties of the resulting polymers were investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) (see Table 2 and Electronic Supporting Information). TGA analyses of poly( NDF ) and poly( NDS ) revealed thermal stability ( T d 50% ) higher than 350 °C in agreement with literature data on functionalized polynorbornene (Liu et al, 2007 ). No correlation was observed between thermal stability ( T d 50% ) and degree of polymerization ( DP n ).…”

Section: Resultssupporting

confidence: 89%

Biocatalytic Synthesis and Polymerization via ROMP of New Biobased Phenolic Monomers: A Greener Process toward Sustainable Antioxidant Polymers

et al. 2017

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Antioxidant norbornene-based monomers bearing biobased sterically hindered phenols (SHP)—NDF (norbornene dihydroferulate) and NDS (norbornene dihydrosinapate)—have been successfully prepared through biocatalysis from naturally occurring ferulic and sinapic acids, respectively, in presence of Candida antarctica Lipase B (Cal-B). The ring opening metathesis polymerization (ROMP) of these monomers was investigated according to ruthenium catalyst type (GI) vs. (HGII) and monomer to catalyst molar ratio ([M]/[C]). The co-polymerization of antioxidant functionalized monomer (NDF or NDS) and non-active norbornene (N) has also been performed in order to adjust the number of SHP groups present per weight unit and tune the antioxidant activity of the copolymers. The polydispersity of the resulting copolymers was readily improved by a simple acetone wash to provide antioxidant polymers with well-defined structures. After hydrogenation with p-toluenesulfonylhydrazine (p-TSH), the radical scavenging ability of the resulting saturated polymers was evaluated using α,α-diphenyl-β-picrylhydrazyl (DPPH) analysis. Results demonstrated that polymers bearing sinapic acid SHP exhibited higher antiradical activity than the polymer bearing ferulic acid SHP. In addition it was also shown that only a small SHP content was needed in the copolymers to exhibit a potent antioxidant activity.

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Section: Resultssupporting

confidence: 89%

Biocatalytic Synthesis and Polymerization via ROMP of New Biobased Phenolic Monomers: A Greener Process toward Sustainable Antioxidant Polymers

et al. 2017

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“…[3] Metal-catalysed addition polymerisation (also called vinyl addition polymerisation) of norbornene occurs via the enchainment of the monomer double bonds, leading to saturated carbon chains with rigid bicyclic structural units that remain intact. The latter polymer chains are strongly constrained from the rotational point of view, [2] the corresponding polymer presenting a series of interesting and unique chemical and physical properties, such as high glass transition and decomposition temperatures, [4] high thermal stability, [5] high optical transparency, low moisture absorption, low optical birefringence and dielectric loss. [6] Therefore, these are desired materials for many optical and microelectronic applications, for instance, in films suitable for cover layers for liquid-crystal displays, condensers or insulators, [7] or deep UV photoresists and low dielectric constant interlevel dielectrics.…”

Section: Introductionmentioning

confidence: 99%

Polymerisation of Norbornene Catalysed by Highly Active Tetradentate Chelated α‐Diimine Nickel Complexes

Li¹,

Gomes²,

Lemos³

et al. 2011

Macro Chemistry & Physics

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A series of three recently synthesised tetradentate chelated α‐diimine nickel complexes of the type [NiBr2(Ar‐BIAN)] (where Ar = 2‐(1‐R‐1H‐1,2,3‐triazol‐4‐yl)phenyl; R = benzyl 1, 1‐phenylethyl 2, phenyl 3) are used as precatalysts for the polymerisation of norbornene. When activated with MAO, 1–3 are highly active catalysts for the production of high molecular weight polynorbornene (e.g., 1.39 × 107 g PNB mol Ni−1 · h−1). The catalytic activity and polymer molecular weight increase markedly with the initial concentration of norbornene, but both parameters decrease with the reaction time. The characterisation of the polynorbornenes by NMR, GPC/SEC, X‐ray diffraction, and DSC/TGA leads to the assignment of a structure typical of a polynorbornene originated by a coordination vinyl addition mechanism. magnified image

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“…The heating rate employed were 5, 10, 15, 20 and 25 C/min, respectively. The activation energy of thermal degradation was calculated from the TGA data according to OzawaeFlynneWall method and the thermal degradation mechanism was estimated by Phadnis-Deshpande method [23].…”

Section: Characterizationmentioning

confidence: 99%

“…To estimate the apparent activation energy and thermal degradation mechanism of PBCCL, the PBCCL-3 was performed under various heating rates 5, 10, 15, 20, and 25 C /min in the range 30 to 450 C. The apparent activation energy and thermal degradation model of PBCCL were estimated by OzawaeFlynneWall method and Phadnis-Deshpande method [23], respectively.…”

Section: Thermal Degradation Kinetics Analysismentioning

confidence: 99%

Preparation and thermal degradation kinetics of terpolymer poly(ɛ-caprolactone-co-1,2-butylene carbonate)

Liu

Peng

Huang

et al. 2010

Polymer Degradation and Stability

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Thermal characterization and thermal degradation of poly(norbornene-2,3-dicarboxylic acid dialkyl esters) synthesized by vinyl addition polymerization

Cited by 10 publications

References 21 publications

Biocatalytic Synthesis and Polymerization via ROMP of New Biobased Phenolic Monomers: A Greener Process toward Sustainable Antioxidant Polymers

Biocatalytic Synthesis and Polymerization via ROMP of New Biobased Phenolic Monomers: A Greener Process toward Sustainable Antioxidant Polymers

Polymerisation of Norbornene Catalysed by Highly Active Tetradentate Chelated α‐Diimine Nickel Complexes

Preparation and thermal degradation kinetics of terpolymer poly(ɛ-caprolactone-co-1,2-butylene carbonate)

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