PEA poly ethyl acrylate

The TREPR spectrum obtained after photolysis of PEA (radical 5a) in solution is shown in Eig. 14.4E. There are six major transitions observed in [3-methylene hyperfine couplings of 23.0 and 24.7 G, and one a-hyperfine coupling of 21.5 G. These coupling constants are comparable to values reported in the literature for radicals of similar chemical structure.At room temperature, the [3-methylene couplings are not resolved due the increased natural linewidth, and at such temperatures the spectrum appears to have five nearly equivalent coupling constants lead to a six-line spectrum, with transitions in a 1 5 10 10 5 1 intensity ratio. It is only at higher 

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Figure 7.1. Comparison of the cloud-point curves of poly(ethyl acrylate) (PEA), poly(butyl acrylate) (PBA), poly(ethylhexyl acrylate) (PEHA), and poly(octadecyl acrylate) (PODA) in C02. The overall polymer concentration is 5 wt % for each curve and the Mw of the polymer is given on each curve (Kirby and McHugh, 1999). The demarcations L + L and FLUID denote a two-phase and a one-phase region, respectively.

The next three polymers in this series are aU ethyl acrylates, meaning that while the backbone (a) substituent is different in all three structures, the ester side-chain group (P) is the same for aU of them ( CH2CH3). Polymer 3 is poly(ethyl methacrylate) (PEMA), and 4 is poly(ethyl cyanoacrylate) (PECA), which may be recognizable as a primary component of the so-called superglues. Polymer 5 is poly(ethyl acrylate) (PEA), with H on the backbone a-position. Erom structure 3 to 4 to 5, the a-substituent becomes simpler in structure and this will be reflected in the observed TREPR spectra below in terms of the number of observed transitions, and in some cases the linewidths as well. 

The stracture-property correlation of different copolymers with n-butyl acrylate and isobomyl acrylate units have been studied. The primary goal was to compare thermomechanical properties of block, gradient and statistical copolymers of nBA and IBA with various acrylate homopolymers (Scheme 1). The choice of nBA and IBA was dictated by very different thermal properties of the resulting homopolymers, glass transition temperature (Tg) of PnBA is -54°C while the Tg of PIBA is 94°C. Thus, their copolymerization with carefully selected ratios should result in polymers with thermal properties, i.e., Tg similar to acrylate homopolymers poly(t-butyl acrylate) (PtBA), poly(methyl acrylate) (PMA), poly(ethyl acrylate) (PEA) and poly(n-propyl acrylate) (PPA). 

Notwithstanding the general incompatibility of polymers and copolymers, polymers with solubility parameters that differ by 0.5 unit are compatible although their structures may differ. Thus, poly (methyl methacrylate) (PMMA), poly (ethyl acrylate) (PEA), poly (vinyl chloride) (PVC), and poly (butadiene-co-acrylonitrile) (90/10-60/40) form useful compatible blends because their solubility parameters are in the range 9.2-9.4. The difference in solubility parameters resulting in compatibility may be as much as one unit when the polymers are of relatively low molecular weight. 

Poly [ 1 -(dimethylcarbamoyl)ethylenej Poly [ 1 -(ethoxycarbonyl)ethylenej Poly(ethyl acrylate) [PEA] Poly[l-(ethoxycarbonyl)-l-fluoroethylene] Poly[l-(2-ethoxycarbonylphenoxycarbonyl)ethylene] Poly[l-(3-ethoxycarbonylphenoxycarbonyl)ethylene] Poly[l-(4-ethoxycarbonylphenoxycarbonyl)ethylene] Poly[l-(2-ethoxyethoxycarbonyl)ethylene] Poly[l-(3-ethoxypropoxycarbonyl)ethylene]... 

In this study, the specific polymers of interest are poly(2,2,2-tri iuoroethyl methacrylate), PTFEMA, poly(2,2,2-trifluoroethyl acrylate), PTFEA, and poly(hexa-fluoroisopropyl aaylate), PHFiPA, with the respective non-fiuorinated counterparts, poly(ethyl methacrylate), PEMA, poly(ethyl acrylate), PEA, and poly(isopropyl acrylate), PiPA. 

Dynamic-mechanical and dielectric data for several poly-(alkyl acrylates) including poly(methyl acrylate) (PMA) (1), poly(ethyl acrylate) (PEA) (2), poly(n-butyl acrylate) (PBA) (3), and poly(cyclohexyl acrylate) (PCA) (4)... 

Similar trends were noted on polyblend formation of PVC with various methacrylates and acrylates when PVC was blended with poly(methyl methacrylate) (PMMA), poly(ethyl methacrylate) (PEMA), poly(bntyl methacrylate) (PBMA), poly(ethyl acrylate) (PEA) and poly(butyl acrylate) (PBA) (Chakrabarti and Chakraborty, 2006 Chakrabarti and Chakraborty, 2007). The blends were characterized with respect to their physicomechanical, thermomechanical, thermal and morphological properties. The blends were prepared with PVC and the different methacrylates and acrylates in varying composition ratios of each polymer. The me-... 

Poly (ethyl acrylate) (PEA), as well as ethyl acrylate copolymers containing varying concentrations of 4-vinyl pyridine (1960 < equivalent weight (EW) < 630), were prepared in connection with other projects and were generously provided by D. Duchesne, The polymerization procedure and physical properties of these materials have been reported elsewhere. ... 

Figure 6 Photo-cross-link kinetics observed for an anthracene-labeled poly(ethyl acrylate) (PEA-A) under various light intensities observed at 25 °C [45].

Poly(ethyl acrylate) PEA Polyll- (ethyoxycarbonyl)- ethylene] 9003- 21-8 -22 1.46... 

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