Copolymer styrene-acrylic acid

The nucleic acid sensor was prepared by first derivatizing the quartz surface with a 3 1 styrene-acrylic acid copolymer. Poly (A) was then covalently immobilized onto pendant carboxylic acid groups by amide bond formation with the amino groups on the adenine base. Hybridization occurred during incubation with poly(U). Following each of the three steps, the sensor was rinsed and dried and the resonant frequency of oscillation was measured. Prior to any treatment, the quartz crystals exhibited a resonant frequency of 9 MHz. Because each step in the surface treatment involved the addition of mass to the crystal surface, a frequency decrease was expected after each step. Figure 7.9 shows the actual frequency changes measured for a sensor prepared as described above, as well as for a sensor prepared with no poly(A) included in the second step (i.e., a control sensor). [Pg.144]

PC/ACM Styrene-acrylic acid copolymer, SAA High impact strength and HDT Henton, 1977, 1986... [Pg.329]

The utility of polyaniline in corrosion resistant coatings has been noted [McAndrew et al., 1996]. The addition of polyaniline to acid containing polymers e.g., polyamic acid precursor of poly-imides, styrene-acrylic acid copolymers) allowed for polymeric doping and intermediate corrosion protection of the blends compared to the constituents. Epoxy addition and diisocyante terminated... [Pg.1185]

Figure 7. ATR FTIR spectra of the styrene acrylic acid copolymer in the 2200-1000-cm region. A is the aqueous solvent spectrum. B through E are the difference spectra of various concentrations of styrene acrylic acid minus solvent. Reproduced with permission from ref. 19. Copyright 1987 Applied...

Table 2. Blends of PVME with Styrene/Acrylic Acid Copolymers...

Shouting and Poehlein [29] showed that H-NMR is a valuable tool for the quantitative determination of monomer ratios in styrene-acrylic acid copolymers. In this work, results from H-NMR and C-NMR were compared. The composition results obtained by the two methods are compared in Table 4.7. [Pg.131]

Table 4.7 Fraction of styrene in initial monomer feed ff) and in bulk styrene-acrylic acid copolymers (FJ obtained by H- and C-NMR ...

For example, this method was carried out for various copolymers, namely styrene-methyl methacrylate copolymer [65-67], epoxide resins [68], styrene-acrylic acid copolymer [69], styrene-2-methoxyethyl methacrylate copolymer [70, 71], ethylene-ot-olefin copolymer [72], partially modified dextran-ethyl carbonate copolymer [73], vinyl chloride-vinyl acetate copolymer [43], styrene-acrylonitrile copolymer [74], and styrene-butadiene copolymer [75]. [Pg.229]

Spychaj T, Hamielec AE (1988) Solvent/non-solvent solubility and polarity parameters in fractional separation of oligomers 2. Styrene-acrylic acid copolymer. Angew Makromol Chem 157 137-151... [Pg.269]

Urban and co-workers [82] stndied the strncture of styrene-acrylic acid copolymers using attenuated total reflection Fonrier transform infrared spectroscopy. Kandu and El Gamel [83] correlated the relative intensities of the carbonyl frequencies of the methyl acrylate units in styrene methyl acrylate copolymers with copolymer composition. The positions and shapes of the carhonyl hands in the infrared absorption spectra of the copolymers dissolved in chloroform, were shown to depend on the composition of the copolymers and upon the presence of different proportions of methyl acrylate centred triads. The results obtained by infrared spectroscopy were compared with those obtained by C-NMR. Infrared spectra may be used to yield information about both the copolymer composition and the triad sequence distribution. [Pg.255]

Wang and Poehlein [88] showed that H-NMR is a valuable tool for the quantitative determination of monomer ratios in styrene - acrylic acid copolymers. [Pg.256]

Reynhout XEE, Beckers M, Meuldijk A, Drinkenburg BAH (2005) Electrosteric stability of styrene/acrylic acid copolymer latices under emulsion polymerization reaction conditions. J Polymer Sci Part Polymer Chem 43(4) 726... [Pg.239]

Semicrystalline polyurethane/(styrene-acrylic acid) copolymer-... [Pg.328]

Vatalis A, Delides C, Grigoryeva O, Sergeeva L, Brovko A, Zimich O, Shtompel V, Georgoussis G and Pissis P (2000) Thermoplastic apparent interpenetrating polymer networks of polyurethane and styrene/acrylic acid copolymer obtained by melt mixing. Structure-property relationships, Polym Eng Sci 40 2072-2085. [Pg.351]

Styrene/acrylic acid copolymer 20.0 mol% acrylic acid... [Pg.127]

Styrene/acrylic acid copolymer vinyl acetate/vinyl alcohol copolymer and tetrahydrofuran 82LE1... [Pg.181]

Styrene/acrylic acid copolymer benzene Henry 120... [Pg.490]

Poly(styrene) and acrylonitrile-styrene copolymer Styrene-acrylonitrile copolymer Styrene-butadiene copolymer Acrylonitrile-butadiene-styrene, and acrylonitrile-styrene— acrylic acid copolymers Ethylene-vinyl acetate copolymer Poly (vinyl chloride)... [Pg.2266]

Figure 7.7 H-NMR spectra of bulk styrene-acrylic acid copolymer, SA-40, DMSO as solvent at 90 (Reprinted with permission from S. Wong and G.W, Poehlein, Journal of Applied Polymer Science, 1993, 49, 6, 991. 1993 John Wiley and Sons [105])...

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