Determination of Reactivity Ratios for the System Methyl Methacrylate−<i>n</i>-Butyl Methacrylate

Manders, LG Bart; Smulders, Wilfred; Aerdts, AM Annemieke; Herk, AM Alex van

doi:10.1021/ma961377l

Cited by 27 publications

(21 citation statements)

References 11 publications

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“…This resulted in r MMA = 0.76 and r FHMA = 1.31. Reactivity ratios and their 95% joint confidence intervals are shown in Figure 2, together with literature values for the copolymer systems MMA–BMA17 and BA–MMA 18…”

Section: Resultsmentioning

confidence: 91%

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P[CF3(CF2)5CH2MA-co-MMA] and P[CF3(CF2)5CH2MA-co-BA] copolymers: Reactivity ratios and surface properties

Grampel

Geldrop

Lavèn

et al. 2000

J. Appl. Polym. Sci.

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This study aimed at reducing the surface energy of coatings by copolymerization of commonly used monomers with fluorine‐containing monomers. Copolymers of 1,1‐dihydroperfluoroheptyl methacrylate (FHMA) and methyl methacrylate (MMA) or butyl acrylate (BA) are prepared by low‐conversion polymerization in solution. Using 1H‐NMR data and nonlinear least‐squares data fitting, reactivity ratios of these systems at 80°C are determined to be rFHMA = 1.31, rMMA = 0.76, and rFHMA = 3.15, rBA = 0.38, respectively. We assume that the penultimate unit effect plays an important role in these systems. Introduction of the perfluoroalkyl side chain lowers the polymer surface energy significantly; copolymers of MMA and FHMA show a reduction in total surface energy of about 50 % at a content of 15 mol % FHMA as compared with pure PMMA. The attainable reduction in surface energy is much larger than with, for example, Teflon. This is due to the preferential adsorption of the —CF3 groups of the fluoroalkyl side chain, if compared to that of the —CF2— groups of Teflon. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 79: 159–165, 2001

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Section: Resultsmentioning

confidence: 91%

“… Reactivity ratios and the 95% joint confidence intervals for the reactivity ratios for the systems MMA–FHMA, BA–FHMA, MMA–BMA,17 and BA–MMA 18. For the system BA–MMA, the published 1 H‐NMR data are recalculated using the NLLS fitting method.…”

Section: Resultsmentioning

confidence: 99%

P[CF3(CF2)5CH2MA-co-MMA] and P[CF3(CF2)5CH2MA-co-BA] copolymers: Reactivity ratios and surface properties

Grampel

Geldrop

Lavèn

et al. 2000

J. Appl. Polym. Sci.

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“…These values can be experimentally determined using Mayo‐Lewis equation given below :

F_{1} = \frac{((), r_{1} - 1) f_{1}^{2} + f_{1}}{((), r_{1} + r_{2} - 2) f_{1}^{2} + 2 ((), 1 - r_{2}) f_{1} + r_{2}}

where f 1 and F 1 are initial feeding amount of monomer 1 and actual composition of monomer 1 in a resulting copolymer. We determined r 1 and r 2 values with the equation by three methods: nonlinear least square (NLS) fitting with the Mayo‐Lewis equation, Fineman‐Ross (FR) method, and Kelen‐Tüdös (KT) method, and resulting values are all compared. FR method uses rearranged form from the Mayo‐Lewis equation to allow linear fitting of data set to yield reactivity ratio.…”

Section: Resultsmentioning

confidence: 99%

Copolymerization Kinetics of a Simple Methacrylate and Functional Comonomers Via Cu(0)‐mediated Reversible Deactivation Radical Polymerization

Kim

Choe

Son

et al. 2019

Bulletin Korean Chem Soc

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We demonstrate thorough studies on copolymerization of methyl methacrylate (MMA) with widely used commercially available functional monomers, allyl methacrylate (AMA), 2‐hydroxyethyl methacrylate (HEMA), glycidyl methacrylate (GMA) and N‐isopropyl acrylamide (NIPAM), via Cu(0)‐mediated reversible deactivation radical polymerization (Cu(0)‐RDRP), and further compared to copolymerization kinetics of MMA with ethyl methacrylate (EMA). The apparent propagation rate constants and induction periods of the copolymerizations were estimated to reveal the effect of monomer type to copolymerization kinetics. Further studies show that MMA/AMA and MMA/HEMA exhibit relatively random distributions of functional monomer units in copolymer chains; however, MMA/NIPAM does not as activated MMA and NIPAM prefer homopolymerization and crosspolymerization, respectively. Copolymerization conditions for all pairs show less reactivity differences compared to the cases of other radical‐based polymerizations, highlighting the importance of polymerization methods and conditions to control copolymer microstructure, and emphasizing the significance of deeper understanding in RDRPs.

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“…The qualitative amount of functional groups of MMA and BA in the copolymers was estimated from the integral ratio of methyl protons (COOCH 3 ) and methylene protons (COOCH 2 ) by integration of each peak in standard way . The mole fraction of MMA in the copolymer (F MMA ) calculated as 0.80; and F BA calculated as 0.18 . According to the literature, MMA has a higher reactivity ratio, so it tends to react with itself more than BA during polymerization.…”

Section: Resultsmentioning

confidence: 99%

Transparent poly(methyl methacrylate‐co‐butyl acrylate) nanofibers

Avcı¹,

Sarac

2013

J of Applied Polymer Sci

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Nanofibers of n-Butyl Acrylate/Methyl Methacrylate copolymer [P(BA-co-MMA)] were produced by electrospinning in this study. P(BA-co-MMA) was synthesized by emulsion polymerization. The structural and thermal properties of copolymers and electrospun P(BA-co-MMA) nanofibers were analyzed using Fourier transform infrared spectroscopy-Attenuated total reflectance (FTIR-ATR), Nuclear magnetic spectroscopy (NMR), and Differential scanning calorimetry (DSC). FTIR-ATR spectra and NMR spectrum revealed that BA and MMA had effectively participated in polymerization. The morphology of the resulting nanofibers was investigated by scanning electron microscopy, indicating that the diameters of P(BA-co-MMA) nanofibers were strongly dependent on the polymer solution dielectric constant, and concentration of solution and flow rate. Homogeneous electrospun P(BA-co-MMA) fibers as small as 390 6 30 nm were successfully produced. The dielectric properties of polymer solution strongly affected the diameter and morphology of electrospun polymer fibers. The bending instability of the electrospinning jet increased with higher dielectric constant. The charges inside the polymer jet tended to repel each other so as to stretch and reduce the diameter of the polymer fibers by the presence of high dielectric environment of the solvent. The extent to which the choice of solvent affects the nanofiber characteristics were well illustrated in the electrospinning of [P(BA-co-MMA)] from solvents and mixed solvents. Nanofiber mats showed relatively high hydrophobicity with intrinsic water contact angle up to 120 .

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Determination of Reactivity Ratios for the System Methyl Methacrylate−n-Butyl Methacrylate

Abstract: . Determination of reactivity ratios for the system methyl methacrylate-n-butyl methacrylate. Macromolecules, 30(2), 322-323.

Cited by 27 publications

References 11 publications

P[CF3(CF2)5CH2MA-co-MMA] and P[CF3(CF2)5CH2MA-co-BA] copolymers: Reactivity ratios and surface properties

P[CF3(CF2)5CH2MA-co-MMA] and P[CF3(CF2)5CH2MA-co-BA] copolymers: Reactivity ratios and surface properties

Copolymerization Kinetics of a Simple Methacrylate and Functional Comonomers Via Cu(0)‐mediated Reversible Deactivation Radical Polymerization

Transparent poly(methyl methacrylate‐co‐butyl acrylate) nanofibers

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