Free radical copolymerization of furfuryl acrylate and 2‐hydroxyethyl‐methacrylate

Abstract

Copolymers of furfuryl acrylate (F) and 2‐hydroxyethyl methacrylate (H) were prepared by free radical polymerization in DMF solution at 50°C, using 2,2′‐azobisisobutyronitrile (AIBN) as initiator. The reactivity ratios of both monomers were calculated according to the general copolymerization equation using the Fineman‐Ross and Kelen‐Tüdös linearization methods, as well as the Tidwell and Mortimer nonlinear least‐squares treatment. The reactivity ratios obtained were rF = 0.93 and rH = 1.42. The microstructure of copolymer chains is described on the basis of first‐order Markov statistics, and the copolymer glass transition temperatures were determined calorimetrically. The variation of Tg with the copolymer composition is discussed according to modern methods, considering the sequence distribution of monomeric units along the copolymer chains. Also the Tg of the corresponding homopolymers was determined giving the values Tg(F) = 321 K and Tg(H) = 358 K, whereas the Tg of the corresponding alternating diad has an average value of TgFH = 326 K. © 1993 John Wiley & Sons, Inc.

Free volume study on calcification process in an intraocular lens after cataract surgery

“…In a polymer, the main‐chain motion starts above its glass transition temperature ( T g ) where the free volume is known to be large. The T g of HEMA is reported to be of 85°C and upon copolymerization with furfuryl acrylate, the T g drops down to 54°C 32. In the present case, copolymerization with another acrylic monomer ethoxyethyl methacrylate, is also expected to reduce the T g of HEMA.…”

“…The T g of HEMA is reported to be of 85°C and upon copolymerization with furfuryl acrylate, the T g drops down to 54°C. 32 In the present case, copolymerization with another acrylic monomer ethoxyethyl methacrylate, is also expected to reduce the T g of HEMA. The DSC scans shown in Figure 4 reflects this standpoint.…”

Kinetic Study of the Thermopolymerization of Furfuryl Methacrylate in Bulk by Mathematical Modeling. Part A: Simulation of Experimental Data and Sensitivity Analysis of Kinetic Parameters

“…Appendix C In this appendix is shown how the concentration of pendant acrylic groups in the network [Equation (11) in text) can be obtained using the method of moments and transformed discreet of total primary molecule number distribution in the network. Let…”

“…As a result of the promising application of these compounds, theoretical interest in the mechanism of their polymerization is growing. [10][11][12] The difficulties encountered in the experimental study of the characterization of the gels formed in these systems, and the complexity of the mechanism involved in their formation, have encouraged the mathematical modeling of their photopolymerization and have converted this theoretical method into an alternative tool for studying the chemistry of these compounds. In the case of complex polymerizing systems in which insoluble gels are obtained, the values of the parameters that characterize network structure (e.g.…”

A new approach in copolymerization: Monte Carlo method for the reactivity ratios calculation in copolymerization of furfuryl acrylate with 2-hydroxyethyl methacrylate

“…A 16 K FID was acquired and zero filled to 32 K before Fourier transformation. The analysis was performed by comparing the integrated intensities of resonance signals with chemical shifts of 6.45 and 6.55 δ assigned to the protons in position 3 and 4 of the aromatic furfuryl ring and 3.65 and 3.95 δ assigned to the oxyethylene protons of the -CH 2 -CH 2 -OH side residue of 2 hydroxyethyl methacrylate units [16] .…”