Study of epoxidized-cardanol containing cationic UV curable materials

Chen, Zhigang; Chisholm, Bret J.; Webster, Dean C.; Zhang, Ying; Patel, Sandeep

doi:10.1016/j.porgcoat.2008.11.008

Cited by 40 publications

(25 citation statements)

References 7 publications

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“…In previous works, cardanol was studied as it brings partial rigidity and good mechanical and thermal properties due to its aromatic ring. The Mannich reaction of cardanol with formaldehyde and some amine such as diethylene triamine [14][15][16] leads to partially biobased phenalkamine [17], Figure 2. The high hydrophobicity of these commercial phenalkamines provided by the long linear side chain also brings many benefits to coating formulations compared with other hardeners.…”

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confidence: 99%

New aromatic amine based on cardanol giving new biobased epoxy networks with cardanol

Darroman

Bonnot

Auvergne

et al. 2014

Euro J Lipid Sci & Tech

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Cardanol, derived from Cashew Nut Shell Liquid, was functionalized by thiol-ene coupling with cysteamine to yield a new biobased aromatic amine. This cardanol amine was compared to the commercial cardanol-based phenalkamines. These amines were characterized by NMR spectrometry and used as epoxy hardeners. The formulations of these amines with epoxidized cardanol in stoichiometric ratio were characterized by DSC, TGA, DMA analyses and exhibit interesting properties for coating applications.

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Section: Insert Figurementioning

confidence: 99%

New aromatic amine based on cardanol giving new biobased epoxy networks with cardanol

Darroman

Bonnot

Auvergne

et al. 2014

Euro J Lipid Sci & Tech

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“…It has been reported that an epoxide‐containing cardanol‐based thin film can also be cured by the manner used for epoxy curing. That is, it can be cured by ultraviolet irradiation and thermal treatment…”

Section: Introductionmentioning

confidence: 99%

Effects of the electron‐beam absorption dose on the glass transition, thermal expansion, dynamic mechanical properties, and water uptake of polycardanol containing epoxy groups cured by an electron beam

Cheon

Cho

2015

J of Applied Polymer Sci

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In this study, the glass transition, thermal expansion, dynamic mechanical properties, and water-uptake behaviors of diepoxidized polycardanol (DEPC) cured by electron-beam radiation in the presence of cationic photoinitiators were investigated. How the type and concentration of cationic photoinitiators and the electron-beam absorption dose influenced the properties of the cured DEPC was also studied. Two types of cationic photoinitiators, triarylsulfonium hexafluorophosphate (simply referred to as phosphate type or P-type) and triarylsulfonium hexafluoroantimonate (simply referred to as antimonate type or Sb-type), were used. Electronbeam absorption doses of 200, 300, 400, and 600 kGy were applied to the uncured diepoxidized cardanol (DEC) samples, respectively. It was revealed that the Sb-type photoinitiator was preferable to the electron-beam curing of DEC; this led to a lower photoinitiator concentration and/or a lower electron-beam absorption dose compared to that in the phosphate-type photoinitiator. As a result, the variations in the glass-transition temperature, coefficient of thermal expansion, storage modulus, and water uptake of the cured DEPC were quite consistent with each other. We found that the optimal conditions for the enhanced properties of DEPC by electron-beam curing were an Sb-type photoinitiator at 2 wt % and an electron-beam absorption dose of 600 kGy. V C 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42570.

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“…One epoxy group is in the chain end and the other one is in the middle of the alkyl chain of the molecule, as shown in Figure 2. It has been reported that epoxy-containing DEC resin can normally be cured by the manner to be used for epoxy curing, for instance, by ultraviolet irradiation 10 and also by thermal treatment. 2 In general, thermally cured epoxy exhibits good mechanical and thermal properties whereas it needs a longer period of processing time, high processing cost and high cure temperature in many advanced applications and a relatively large amount of curing agents.…”

Section: Introductionmentioning

confidence: 99%

Thermogravimetric and Fourier‐transform infrared analyses on the cure behavior of polycardanol containing epoxy groups cured by electron beam

Cheon

Cho

Song

et al. 2014

J of Applied Polymer Sci

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In this study, the curing behavior of polycardanol containing epoxy groups (diepoxidized polycardanol) was exploited in terms of thermal stability and the cure reaction conversion by means of thermogravimetric analysis and Fourier-transform infrared spectroscopy, respectively. The effect of photo-initiator type and concentration and electron beam absorption dose in the presence of cationic photo-initiators (triarylsulfonium hexafluorophosphate (P-type) and triarylsulfonium hexafluoroantimanate (Sb-type) on the cure behavior of diepoxidized cardanol (DEC) resin was investigated. The thermal stability of DEC with Sb-type photo-initiator was higher than that with P-type one, being increased with increasing the concentration and electron beam absorption dose. The conversion of cure reaction was gradually increased with increasing the dose, showing the maximum at 800 kGy. The results revealed that Sb-type photo-initiator, the concentration of 2 or 3 wt %, and electron beam absorption dose of about 800 kGy may be preferable for initiating epoxy ring opening in the DEC molecules as well as for efficiently curing the DEC resin by electron beam irradiation. V C 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41599.

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Study of epoxidized-cardanol containing cationic UV curable materials

Cited by 40 publications

References 7 publications

New aromatic amine based on cardanol giving new biobased epoxy networks with cardanol

New aromatic amine based on cardanol giving new biobased epoxy networks with cardanol

Effects of the electron‐beam absorption dose on the glass transition, thermal expansion, dynamic mechanical properties, and water uptake of polycardanol containing epoxy groups cured by an electron beam

Thermogravimetric and Fourier‐transform infrared analyses on the cure behavior of polycardanol containing epoxy groups cured by electron beam

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