Poly-n-butylacrylate

Polyamide copolymers containing a macromolecular graft substituent were prepared by condensing 4-amino-benzoic acid or a mixture of 1,4-phenylene diamine and adipic acid with 33%, 66%, and 90% 5-(poly(n-butylacrylate)cysteine macromonomer. A second macromolecular monomer, 5-(poly(methyl methacrylate)-cysteine, was also prepared and free radically copolymerized with perfluoromethyl methacrylate. 

Because the adsorption of the side chains is such a strong factor in controlling the macromolecular conformation, not only the length of side chains but also their composition is of great importance. This can be demonstrated by comparing the structures for the brush molecules with poly(n-butylacrylate) side... 

Brushes with diblock side chains have been prepared by the same concept as illustrated in Figure 13. In this case either a polystyrene block or a poly-(n-butylacrylate) block was grafted first by atom transfer polymerization, ATRP, on a poly(2-bro-mopropanoyl ethyl methacrylate), pBPEM, on which in a second step the other monomer was polymerized as the second block.189 Table 4 summarizes the molecular structure of the corresponding polymers, i.e., (i) the macroinitiator or mere backbone molecule (pPBEM) from which (ii) a brush with pnBuA homopolymer side chains (pBPEM-g—pnBuA), (iii) a... 

Three-layered nanoparticles containing an hbPG core and cross-linked block copolymers based on N-isopropyl acrylate and N,N-dimethylaminoethyl acrylate as the respective arms were synthesized and proved to be thermoresponsive. ° Chu and co-workers" reported electrically conductive core-shell nanoparticles based on poly(n-butylacrylate-b-polystyrene) multiarm star polymers. The PS segments were converted to poly(p-styrenesulfonate) (PSS), thus generating amphiphilic tmimolecular micelles. Then the oxidative propagation of 3,4-ethylenedioxythiophene (EDOT) on the PSS chains was carried out by counterion-induced polymerization to produce a stable aqueous dispersion of the respective PEDOT complex. 

Commercial impact-modified acrylic resins (Table 19.15) exhibit five- to tenfold improvement in the notched Izod impact strength and the ultimate tensile elongation compared to the neat PMMA resin. These impact-modified acrylics are usually blended captively by the manufacturers of the acrylic resins. The base resin in a typical weatherable grade (Plexiglas DR, Rohm and Haas) could be a methyl methacrylate copolymer with ethylacrylate and styrene, while the rubber additive (ca. 10 %) could be an emulsion-polymerized, PMMA-grafted, cross-linked poly (n-butylacrylate) rubber of controlled particle size (<200 nm). The nonweatherable impact-modified acrylic (XT, CYRO) typically consists of a MMA/S/AN copolymer with MBS (ca. 10 %) rubber particle dispersions. 

An elastomer based on polyethylacrylate and/or poly-n-butylacrylate with thermal stability up to T = 200 °C, usually cross-linked by heating with peroxides or with alkali. To improve the solvent resistance, 20-50 wt% of ethoxy or methoxyethyl-acrylate may be added. 

DPC has in recent years been applied to studies on a range of photopolymers including DF 2000 photopolymer [5], cinnamoylphenyl methacrylate-glycidyl methacrylate copolymer [6], multiethylene glycol dimethacrylate [7], Ebecryl 270 (aliphatic urethane diacrylate) 1,6-hexanediol diacrylate (Darocur 1173 2-hydroxy-2-methyl-phenylpropan-l-one) [8], epoxy acrylates [9], epoxy vinyl ether formulations [10], polyacrylates, maleimides, and vinyl ethers [11], hydroxylated poly(imides) [12], and polystyrene-poly(n-butylacrylate) copolymers [13]. 

Odeberg and co-workers [13] demonstrated grafting reactions in polystyrene-poly(n-butylacrylate) copolymers using Fourier transform infrared spectroscopy and proton neutron magnetic resonance spectroscopy. DMA and TMA are used to study crosslinking. 

With atomic force microscopy, Tong et al. compared the morphology of some poly(methylmethacrylate)-/ -poly(alkylacrylate)-/ -poly(methylmethacrylate) triblock copolymers, namely poly(methylmethacrylate)-fc-poly(isooctyl acrylate)-/ -poly(methylmethacrylate) (MIM), poly(methylmethacrylate)-fc-poly (n-butylacrylate)-/ -poly(methylmethacrylate) (MnBM), poly(methyhnethacrylate)-fc-poly(n-propylacrylate)-fc-poly(methyl methacrylate) (MnPM), and poly (methylmethacrylate)-/ - and poly(ethylacrylate)-/ -poly(methyhnethacrylate) (MEM), using a procedure designed to image microdomains of different mechanical properties. The amplitude and phase of the oscillating tip were recorded simultaneously at each point of the surface, with a lateral resolution of a few nanometers. 

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