Interpolymer Complexation between Poly(<i>N</i>-methyl-4-piperidinyl Methacrylate) and Acidic Polymers

Luo, Xinyu; Goh, S. H.; Lee, S. Y.; Tan, K. L.

doi:10.1021/ma9715839

Cited by 46 publications

(36 citation statements)

References 19 publications

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“…Upon the formation of complexes, the N 1s spectra become broader and asymmetric, and each can be deconvoluted into three component peaks, with two of them remaining at the same positions and the third one appearing at 400.9 eV. We have earlier shown that when the nitrogen atoms of pyridine and piperidine groups are protonated, the binding energy of N 1s electrons is raised by 2.0 -2.4 eV 33,35) . Apparently, it is the N(3) in PVI that is protonated.…”

Section: Xps Characterizationmentioning

confidence: 98%

Spectroscopic studies of interactions in complexes of poly(1-vinylimidazole) with poly(styrenesulfonic acid) or the zinc salt of poly(styrenesulfonate)

Luo¹,

Goh²,

Lee³

et al. 1999

Macromol. Chem. Phys.

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SUMMARY: Poly(1-vinylimidazole) (PVI) forms complexes with poly(styrenesulfonic acid) and the zinc salt of poly(styrenesulfonate) (PSSA and PSSZn, respectively) in water/ethanol (2 : 1 v/v) solution, indicating the presence of strong interactions. Infrared spectroscopic measurements showed the existence of protonated imidazole groups in all the complexes. X-ray photoelectron spectroscopic studies showed the development of high-binding-energy N(1) 1s and N(3) 1s peaks, but the values of the binding energy shift of N(3) 1s are larger than those of N(1) 1s in all PVI/PSSA and PVI/PSSZn complexes, suggesting proton transfer from PSSA to imidazole N(3) atoms in the PVI/PSSA complexes, and coordination between Zn 2+ and the imidazole N(3) atoms in the PVI/PSSZn complexes. Based on the values of the binding energy shift of the interacting nitrogen atoms, the strength of the coordination interaction in PVI/PSSZn complexes is weaker than the ionic interactions in the PVI/PSSA complexes. The development of a new S 2p spin-orbit split doublet at a low-binding-energy region reveals the existence of interactions between Zn 2+ and the imidazole nitrogen atoms.

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Section: Xps Characterizationmentioning

confidence: 98%

Spectroscopic studies of interactions in complexes of poly(1-vinylimidazole) with poly(styrenesulfonic acid) or the zinc salt of poly(styrenesulfonate)

Luo¹,

Goh²,

Lee³

et al. 1999

Macromol. Chem. Phys.

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“…The complexation between PYEAF and PSSA or PVPA gives 80 -90% yield, while that between PYEAF and PMAA gives just about 10% yield. The yields of the complexes appear to be related to the acidity of the polymers, as the pH values of 0.10 M ethanol/water (1 : 1 v/v) solutions of PSSA, PVPA, PAA and PMAA have been reported to be 1.36, 2.33, 3.04 and 3.57, respectively 20) . Furthermore, the fractions of protonated nitrogen in the complexes, as determined by XPS, also follow the order PYEAF/PSSA A PYEAF/PVPA A PEAF/PAA A PYEAF/PMAA, and this will be further mentioned later.…”

Section: Formation Of Complexesmentioning

confidence: 99%

“…Thus, the surface composition can be substantially different from the bulk composition. In most cases, the composition of a polymer complex depends on the feed composition, and it can be very different from the feed composition 6,13,14,20) . Similarly, the surface composition of a PYEAF/polymer complex is different from the feed composition, except for two PYEAF/ PSSA complexes.…”

Section: Formation Of Complexesmentioning

confidence: 99%

Interactions between multifunctional 2-(2-pyridyl)ethylamino-fullerene and proton-donating polymers

Goh²,

Lee

1999

Macromol. Chem. Phys.

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SUMMARY: C 60 undergoes nucleophilic addition with 2-(2-aminoethyl)pyridine in chlorobenzene to produce multifunctional 2-(2-pyridyl)ethylaminofullerene (PYEAF) with an average stoichiometry of [C 60 H 8 (NHCH 2 -CH 2 C 5 H 4 N) 8 ]. PYEAF was mixed with poly(styrenesulfonic acid) (PSSA), poly(vinylphosphonic acid) (PVPA), poly(acrylic acid) or poly(methacrylic acid) in THF/methanol (1/2 v/v) to form fullerene-containing polymer complexes. All complexes do not show distinct glass transitions up to the degradation temperatures. The interactions between PYEAF and the polymers were studied by means of X-ray photoelectron spectroscopy. Protonation of nitrogen in PYEAF was shown by the development of a high-binding energy N1s peak in all complexes. The fraction of protonated nitrogen in the complex depends on the acidic strength and the amount of the polymer. The S2p spectra of PYEAF/PSSA complexes and the P2p spectra of PYEAF/PVPA complexes further show the existence of sulfonate ions and phosphonate ions, respectively. The strong ionic interactions between PYEAF and all these acidic polymers lead to the formation of complexes.

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“…The nature of the solvent, 18 -24 the composition, 25,26 and the density of the functional groups of one or both polymers 12,26 -30 affect the formation of interpolymer complexes.…”

Section: Viscometry Analysismentioning

confidence: 99%

Miscibility and complexation behavior in poly(ethyl methacrylate)/poly(styrene‐co‐methacrylic acid), poly[2‐(N,N‐dimethylamino) ethyl methacrylate]/poly(styrene‐co‐methacrylic acid), and poly{styrene‐co‐[2‐(N,N‐dimethyl amino) ethyl methacrylate]}/poly(styrene‐co‐methacrylic acid) systems

Abdellaoui

Djadoun

2005

J of Applied Polymer Sci

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This contribution presents a study of the hydrogen-bonding interactions between poly(styrene-comethacrylic acid) containing 22 mol % methacrylic acid (SMA-22) and poly(ethyl methacrylate) (PEMA), poly Ndimethylamino) ethyl methacrylate] (PMAD), or poly{styrene-co- [2-(N,N-dimethylamino) ethyl methacrylate]} containing 3, 12, or 21 mol % 2-(N,N-dimethylamino) ethyl methacrylate (SMAD-3, SMAD-12, or SMAD-21) by viscometry and differential scanning calorimetry (DSC). On the basis of the analysis of DSC thermograms and viscometric measurements, polymer miscibility was observed with the PEMA/SMA-22 system. This miscibility was due to hydrogen-bonding specific interactions between carbonyl groups of PEMA and carboxylic groups of SMA-22. The SMAD-3/SMA-22 system was immiscible, whereas complexation was observed with PMAD/SMA-22, SMAD-21/SMA-22, and SMAD-12/SMA-22 mixtures in butan-2-one. This complexation was due to stronger interactions between poly(styrene-co-methacrylic acid) and the 2-(N,N-dimethylamino) ethyl methacrylate groups of PMAD or SMAD copolymers, as evidenced by viscometry and DSC. A similar phenomenon was observed for PMAD/SMA-22 and SMAD-21/SMA-22 mixtures in tetrahydrofuran. For the SMAD-12/SMA-22 system in this solvent, such behavior was noted only in the presence of an excess of the copolymer SMAD-12. This study showed that the minimum amount of interacting species required for the interpolymer complexation was higher in tetrahydrofuran than in butan-2-one. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 98: 658 -664, 2005

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Interpolymer Complexation between Poly(N-methyl-4-piperidinyl Methacrylate) and Acidic Polymers

Cited by 46 publications

References 19 publications

Spectroscopic studies of interactions in complexes of poly(1-vinylimidazole) with poly(styrenesulfonic acid) or the zinc salt of poly(styrenesulfonate)

Spectroscopic studies of interactions in complexes of poly(1-vinylimidazole) with poly(styrenesulfonic acid) or the zinc salt of poly(styrenesulfonate)

Interactions between multifunctional 2-(2-pyridyl)ethylamino-fullerene and proton-donating polymers

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