A facile and highly efficient strategy for esterification of poly(meth)acrylic acid with halogenated compounds at room temperature promoted by 1,1,3,3-tetramethylguanidine

Li, Qianbiao; Bao, Yinyin; Wang, Hu; Du, Fanfan; Li, Qing; Jin, Bao; Bai, Ruke

doi:10.1039/c3py00155e

Cited by 54 publications

(38 citation statements)

References 48 publications

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“…1 HNMR analysis of the extracts highlighted the prominent presence of polymeric materials, as confirmed by the sharp signals recorded in the range between 0.8–3.7 ppm whose attribution was unequivocally ascribed to the proton atoms of PMMA ( Figure a) . The 1 HNMR spectra of PMMA‐Dry and PMMA‐Wet extracts differed from that of PMMA‐raw extract used as reference, within the spectral area laying between 5.0 and 7.0 ppm which is typical of alkenyl protons of methyl methacrylate units.…”

Section: Resultsmentioning

confidence: 82%

Additive Manufacturing of Poly(Methyl Methacrylate) Biomedical Implants with Dual‐Scale Porosity

Puppi

Morelli

Bello

et al. 2018

Macro Materials & Eng

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The development of bone permanent implants with a porous structure favoring their integration with the surrounding tissues is emerging as an attractive field of application of additive manufacturing (AM). This article reports on the investigation of the suitability of a hybrid AM technique, that is, computer‐aided wet‐spinning (CAWS), to fabricate novel poly(methyl methacrylate) (PMMA) constructs as porous implant prototypes. The optimization of the processing parameters to fabricate PMMA samples with a predefined internal porous structure and different external shapes is described. The study demonstrates that tailoring post‐processing conditions represents a powerful tool to optimize samples macroscopic aspect, micromorphology, and mechanical properties. In particular, the possibility of obtaining a dual‐scale porosity through the integration of the macroporous structure determined by the material lay‐down pattern with a submicrometric porosity resulting from the phase inversion process governing polymer solidification, together with the possibility of purifying the employed commercial material from residual monomer during coagulation in ethanol, are reported as noteworthy advantages of CAWS over other AM techniques. A natural progression of this work is the development of relevant complex anatomical prototypes with tailored porosity by processing digital data obtained from computer tomography imaging of bone defects.

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Section: Resultsmentioning

confidence: 82%

Additive Manufacturing of Poly(Methyl Methacrylate) Biomedical Implants with Dual‐Scale Porosity

Puppi

Morelli

Bello

et al. 2018

Macro Materials & Eng

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“…In the present study, 1 H NMR was used to define the functionalization of PMMA. The 1 H NMR spectrum of functionalized PMMA in Figure shows a sharp peak at δ value 0.823 ppm for methyl group present as a side group and at 1.799 ppm for CH 2 in main chain of polymer . The aliphatic proton of amine group present in functional group was observed at δ 3.585 ppm .…”

Section: Resultsmentioning

confidence: 94%

Impact of vanadium‐, sulfur‐, and dysprosium‐doped zinc oxide nanoparticles on various properties of PVDF/functionalized‐PMMA blend nanocomposites: Structural, optical, and morphological studies

Singh

Madhav

Yadav³

et al. 2018

J of Applied Polymer Sci

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The polymeric blend was fabricated with crystalline poly(vinylidene fluoride) (PVDF)/amorphous functionalized-poly (methyl methacrylate) (PMMA) in 70/30 w/w ratio by chemical mixing method. Functionalization of PMMA was achieved with 2-amino-5-nitrobenzoic acid. The prepared polymer blend was used as a matrix to synthesize nanocomposites with undoped/doped zinc oxide (ZnO) nanoparticles. Doping in ZnO was achieved with vanadium, sulfur, and dysprosium elements as a dopant. The structural, optical, electronic, and morphological properties of undoped/doped nanosized ZnO and blended nanocomposites were accessed through sophisticated analytical techniques, that is, Fourier transform infrared (FTIR), ultraviolet-visible (UV-vis), UV-vis-diffuse reflectance spectra, nuclear magnetic resonance, fluorescence spectroscopy, X-ray diffraction (XRD), transmission electron microscopy, and scanning electron microscopy. The FTIR band at 1165-1176 cm −1 in functionalized-PMMA indicate the formation of aliphatic C-N bond along with aromatic 1 H chemical shift (δ) at 7.134, 7.829 and 8.210 ppm confirm the successfully functionalization of PMMA. The prominent XRD peak at 2θ = 20.8 in nanocomposites shown improvement in β-phase of PVDF. The results show that Dy doped ZnO nanoparticles create remarkable effect on various properties of nanocomposites.

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“…S1). The changes in chemical shifts confirm that vinyl moieties (6.42, 6.12 and 5.82 ppm) are not contained in the residue and that poly( n ‐butyl acrylate) is formed . The GPC result also agrees with this NMR result, and a peak for a polymer of high molecular weight ( M w ) over 10 5 was detected.…”

Section: Resultsmentioning

confidence: 97%

Initiator‐free photopolymerization of common acrylate monomers with 254 nm light

Furutani

Ide

Kinoshita

et al. 2018

Polymer International

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Using an available light source at a wavelength of 254 nm, common acrylate monomers were polymerized without any photoinitiators, which was confirmed using Fourier transform IR (FTIR) spectroscopy, 1H NMR, gel permeation chromatography and fast atom bombardment mass spectrometric measurements. It was found that phenyl acrylate shows higher conversion than n‐ and t‐butyl acrylates. A trifunctional acrylate was also used for UV curing. The cured films were fabricated successfully on different kinds of substrates by using a batch‐ or conveyor‐type irradiation apparatus. It is indicated from FTIR spectral measurements that ca 40%–50% of acryloyl groups are consumed by the photopolymerization. Oxygen concentration in the sample chamber influences the photopolymerization, indicating that the polymerization proceeds via a radical process. © 2018 Society of Chemical Industry

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A facile and highly efficient strategy for esterification of poly(meth)acrylic acid with halogenated compounds at room temperature promoted by 1,1,3,3-tetramethylguanidine

Cited by 54 publications

References 48 publications

Additive Manufacturing of Poly(Methyl Methacrylate) Biomedical Implants with Dual‐Scale Porosity

Additive Manufacturing of Poly(Methyl Methacrylate) Biomedical Implants with Dual‐Scale Porosity

Impact of vanadium‐, sulfur‐, and dysprosium‐doped zinc oxide nanoparticles on various properties of PVDF/functionalized‐PMMA blend nanocomposites: Structural, optical, and morphological studies

Initiator‐free photopolymerization of common acrylate monomers with 254 nm light

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