Radical copolymerization of photocrosslinkable cinnamoylphenylmethacrylate and acrylamide

Rajabhuvaneswari, Ariyamuthu; Pandurangan, A.; Subramanian, K.

doi:10.1007/s10965-008-9210-6

Cited by 7 publications

(2 citation statements)

References 21 publications

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“…The dimerization is a bimolecular reaction which results in the crosslinking of the polymer chains due to the generation of cyclobutane rings through a [2 + 2] cycloaddition of the C=C double bonds. [24] The polymer PA6a showed an absorption maximum at 305 nm which is attributed to the transition through the chalcone system for the trans-isomer. The intensity of this absorption decreased fast upon exposure to UV light which indicated the destruction of conjugation in the entire π-electron system, either due to dimerization or trans-cis isomerization.…”

Section: Optical Propertiesmentioning

confidence: 98%

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Novel chalcone-based aromatic polyamides: synthesis, characterization, and properties

Nechifor¹

2016

Designed Monomers and Polymers

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Two novel diacid-based monomers have been synthesized by anchoring a benzylideneacetophenone (chalcone) moiety through an amide or ester bridge at the fifth position of the isophthalic acid ring. Two series of new polyamides bearing chalcone side chains were prepared by direct polycondensation reaction of the aforementioned dicarboxylic acids and various aromatic diamines in N-methyl-2-pyrrolidinone, using triphenyl phosphite and pyridine as condensing agents. Their molecular structure and the basic properties were investigated by nuclear magnetic resonance, Fourier-transform IR and UV-vis spectroscopy, differential scanning calorimetry, thermogravimetric analysis, and wide-angle X-ray diffraction. The inherent viscosity, molecular weights measurements (by gel permeation chromatography), water uptake, and solubility tests completed the research study. Introduction of the rigid and bulky chalcone units into the polymer side chains improved remarkably the solubility of the aromatic polyamides, endowed them with an amorphous nature, good thermal stability, and photosensitivity. The resulting polymers were obtained in good yields, inherent viscosities varied between 0.49 and 0.86 dL/g, and their relative high molecular weights conferred them film-forming properties. They were soluble in amide-type polar solvents, such as N,N-dimethylformamide, dimethyl sulfoxide, N,N-dimethylacetamide, and N-methyl-2-pyrrolidone. These polyamides had glass transition temperatures between 219 and 264 °C, and 10% weight loss temperatures in the range of 394-436 °C and around 50% residue at 700 °C in nitrogen atmosphere. The polyamides underwent a [2 + 2] photocycloaddition reaction upon UV light irradiation both in solution and film state in the absence of a photoinitiator or photosensitizer. The polymer films became insoluble in solvents as a result of the crosslinking .

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Section: Optical Propertiesmentioning

confidence: 98%

“…elemental analysis (%): Calcd. for C 24 139.0 (C1′), 138.1 (C4), 133.6 (C1), 132.6 (C4′), 131.4 (C1, isophthalic ring), 130.3 (C3), 129.5 (C2), 128.9 (C2, isophthalic ring), 128.6 (C3′), 128.2 (C2′), 124.4 (C4, isophthalic ring), 122.3 (CH=, α).…”

Section: -[4-[3-oxo-3-phenyl-prop-1-enyl]benzoyl] Oxybenzene-13-dicmentioning

confidence: 99%

Novel chalcone-based aromatic polyamides: synthesis, characterization, and properties

Nechifor¹

2016

Designed Monomers and Polymers

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Synthesis, characterization, and study of antibacterial activity of homopolymers and copolymers of 4‐benzyloxyphenylacrylates for pressure‐sensitive adhesive application

Mageswari

Subramanian

2012

J of Applied Polymer Sci

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Poly(4-benzyloxyphenylacrylate) and its copolymers with glycidyl methacrylate were synthesized from the monomer, 4-benzyloxyphenylacrylate (4-BOPA) by free radical solution polymerization. The synthesized homopolymers and copolymers were characterized by UV, FTIR, 1 H-NMR, and 13 C-NMR spectroscopic techniques. The thermal stability of the polymers was performed by thermogravimetric analysis in inert atmosphere. The glass transition temperatures of the polymers were determined by differential scanning calorimeter. The lap shear strength of the polymers was determined by Universal testing machine. The antibacterial activities of the polymers were also studied by UV spectroscopy. The results of the TGA analysis showed that the polymers possess good stability even beyond 250 C. Different concentrations of the polymer solutions were prepared and tested for their adhesive strength by applying them between leather strips. Thus, the results of the study reveal that the poly(4-benzyloxyphenylacrylate-co-glycidyl methacrylate) has good adhesive strength compared with poly(4-BOPA), which can be used for its adhesive property suitable for high temperature applications, which can also resist the bacterial growth on the applied surface of the material.

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Synthesis and properties of UV-curable hyperbranched polyurethane acrylate oligomers containing photoinitiator

et al. 2011

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Radical copolymerization of photocrosslinkable cinnamoylphenylmethacrylate and acrylamide

Cited by 7 publications

References 21 publications

Novel chalcone-based aromatic polyamides: synthesis, characterization, and properties

Novel chalcone-based aromatic polyamides: synthesis, characterization, and properties

Synthesis, characterization, and study of antibacterial activity of homopolymers and copolymers of 4‐benzyloxyphenylacrylates for pressure‐sensitive adhesive application

Synthesis and properties of UV-curable hyperbranched polyurethane acrylate oligomers containing photoinitiator

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