Polymethyl-acrylonitrile

SBR (Styrene Butadiene Rubber) ABS (Acrylonitrile Butadiene Styrene Polymethyl methacrylate PAN (Polyacrylonitrile)... 

ABS Acrylonitrile Butadiene Styrene SAN Styrene Acrilonitrile PMMA Polymethyl Methacrylate... 

That is not to say that degradation in the presence of cavitation is thermal in origin as work by Melville has shown. Melville carried out both ultrasonic and thermal degradation of two samples of copolymer of polymethyl methacrylate and acrylonitrile, (molar ratio of methacrylate to acrylonitrile 411 1 and 40 1) and observed that whereas the latter copolymer had the faster thermal degradation rate, in the presence of ultrasound both copolymers showed practically the same rate of degradation. Further, a sample of polymethyl methacrylate had the same ultrasonic degradation rate as both of the copolymers (Fig. 5.20). 

Berlin [69] had shown that for the block copolymerisation of polymethyl methacrylate with acrylonitrile, the time required to produce a given amount of polyacrylonitrile in the block decreased with increasing intensity. 

Fig. 23. Polymerization of monomers in masticating polystyrene and polymethyl methacrylate. Curves 1-6 1 ml methacrylic acid, styrene, methyl methacrylate, ethyl acrylate, acrylonitrile, and vinyl acetate, respectively, in 3 g polystyrene. Curves 7-12 2 ml methacrylic acid, methyl methacrylate, acrylonitrile, ethyl acrylate, styrene, and vinyl acetate, respectively, in 3g polymethyl methacrylate. The limiting viscosity numbers for points along Curves 2 and 3...

G.E. Me Kee, M. Welz, A. Deckers, D. Wagner, P.O. Damm, and H.-J. Oslowski, Use of mixtures of polymethyl methacrylate and styrene-acrylonitrile copolymers for the production of laser-inscribed moldings, US Patent 6020106, assigned to BASF Aktiengesellschaft (Ludwigshafen, DE), February 1, 2000. 

Acrylonitrile-Butadine-Styrene (ABS) 6. Polymethyl Methacrylate (Acrylic)... 

This tertiary amine group terminated polymer can undergo transfer in the presence of a second monomer (25, 26), e.g. with acrylonitrile or methyl acrylate which show an exceptionally high transfer constant with such groups (see Table 2). By this method acrylonitrile blocks are bounded to polymethyl methacrylate sequences the overall composition of these block copolymers may be represented by... 

Several graft copolymerizations were described by Ballantine (17, 64), Henglein (104, 105) and coworkers. Different monomer-polymer systems were examined styrene on polymethyl methacrylate, poly-2, 5-dichlorostyrene, polytetrafluoroethylene, polyethylene, polypropylene and polyisobutylene, acrylonitrile on polyethylene, rubber, polymethyl methacrylate and dimethyl polysiloxane, vinylpyrrolidone and acroleine on polymethyl methacrylate. The results agree with the preceding ones moreover they show the influence of the swelling and diffusion of the monomer into the polymer. 

By ultrasonic irradiation of a solution of polymethyl methacrylate in vinyl acetate or in styrene, no appreciable amount of block copolymer could be found 154). Henglein succeeded with addition of acrylonitrile to polyacrylamide dissolved in water 100). Although acrylonitrile itself... 

For example polymethyl acrylate was treated with phosphorus penta-chloride to form copolymers containing 26.6 and 37.8% acid chloride units these copolymers, by treatment with tert-butyl hydroperoxide, yield 4.9 to 6% perester containing polymers which were used for grafting styrene, vinyl acetate, acrylonitrile (177). 

PC PE PES PET PF PFA PI PMMA PP PPO PS PSO PTFE PTMT PU PVA PVAC PVC PVDC PVDF PVF TFE SAN SI TP TPX UF UHMWPE UPVC Polycarbonate Polyethylene Polyether sulfone Polyethylene terephthalate Phenol-formaldehyde Polyfluoro alkoxy Polyimide Polymethyl methacrylate Polypropylene Polyphenylene oxide Polystyrene Polysulfone Polytetrafluoroethylene Polytetramethylene terephthalate (thermoplastic polyester) Polyurethane Polyvinyl alcohol Polyvinyl acetate Polyvinyl chloride Polyvinyl idene chloride Polyvinylidene fluoride Polyvinyl fluoride Polytelrafluoroethylene Styrene-acrylonitrile Silicone Thermoplastic Elastomers Polymethylpentene Urea formaldehyde Ultrahigh-molecular-weight polyethylene Unplasticized polyvinyl chloride... 

Figure 7.5 Classification result of shredded mixed electronics waste, superimposed onto a greyscale image of the waste fraction. Only objects that could be identified with a likelihood >95% have been classified. Classification colour code yellow metal, mostly aluminium red polymethyl metacry-late (PMMA) orange polyolefines (PE, PP) pink styrene polymers (PS, PS-E, etc.) violet polyamides (PA 6, PA 6.6, etc.) green acrylonitrile-butadiene-styrene (ABS) blue polyvinyl chloride (PVC).

Zilkha, Neta, and Frankel (105) polymerized acrylonitrile and methyl methacrylate with sodium-benzophenone ketyl. They found that polymethyl methacrylate anion initiated acrylonitrile With a mixture of styrene and acrylonitrile, no copolymer was formed. 

Weather-Resistance. For long-lived outdoor products, most plastics can be stabilized somewhat by opaque UV reflectors or at least dissolved UV stabilizers. For inherent resistance to sunlight, rain, and other components of weather, some preferred plastics include acrylonitrile/styrene/acrylic rubber, acry-lonitrile/styrene/ethylene-propylene rubber, polyvinyl chloride, fluoropolymers, and polymethyl methacrylate. 

Figure 5-6. (a) Dependence of T on p for mixtures of polymethyl methacrylate with diethyl phthalate. Comparison of experimental results with equation (5-8). Parameters found were ctjctp = 2.32, Tgd = -57 °C, Tgp = 104 °C.f [After F. N. Kelley and F. Bueche, J. Polym. Sci., 50 549 (1961)] (b) Variation of Tg for a miscible polymer blend of polycaprolactone (PCL) and poly(styrene-co-acrylonitrile) (SAN), with a description of the data using the Gordon-Taylor relationship, equation (5-27). The two points at low SAN content have a higher-than-expected Tg because of crystallization of the PCL. [After S-C. Chiu and T. G. Smith, J. Appl. Polym. Sci., 29,1797 (1984). Copyright 1984, Wiley Periodicals, Inc., a Wiley Company.]... 

Thermoplastics are plastics which undergo a softening when heated to a particular temperature. This thermoplastic behaviour is a consequence of the absence of covalent bonds between the polymeric chains, which remain as practically independent units linked only by weak electrostatic forces (Figure 1.4(a)). Therefore, waste thermoplastics can be easily reprocessed by heating and forming into a new shape. From a commercial point of view, the most important thermoplastics are high density polyethylene (HDPE), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), polyethylene tereph-thalate (PET), polyamide (PA), polymethyl methacrylate (PMMA), acrylonitrile-butadiene-styrene copolymer (ABS), and styrene-acrylonitrile copolymer (SAN). 

Some polymers are essentially amorphous (e.g., polystyrene, acrylonitrile butadiene styrene copolymer, polycarbonate, and polymethyl methacrylate) while others are semicrystalline (e.g., polyolefins and polyamides). The former tend to have a wide melting temperature range with a comparatively high melt strength, while semicrystalline polymers tend to have a narrow melting temperature range and frequently a low melt strength. 

Spadaro, G., Dispenza, G., Me Grail, R, and Valenza, A. 2004. Submicron structured polymethyl methacrylate/acrylonitrile-butadiene rubber blends obtained via gamma radiation induced in situ polymerization. Advances in Polymer Technology 23(3) 211-221. 

Raj et al. °" have compared the efficiency of microwave and e-beam irradiations to stabilize the interface of various partially miscible or nonmiscible blends polystyrene (PS)/polymethyl methacrylate (PMMA), polyvinyl chloride (PVC)/ethylene vinyl acetate (EVA), PP/acrylonitrile butadiene rubber (NBR), and polyvinyl chloride (PVC)/poly(styrene acrylonitrile) (SAN). For this purpose, they used positron annihilation lifetime measurements, and they considered particularly a hydrodynamic interaction parameter a. This... 

Tensile Properties of Pure Polymethyl Methacrylate (PMMA) and PMMA-Acrylonitrile Butadiene Rubber (ABN) Blends (Standard Deviations Are Omitted)... 

Diethylaminoethyl methacrylate acrylic monomer inhibitor Hydroquinone monomethyl ether acrylic plastic, food packaging Acrylamide/sodium acrylate copolymer Polymethyl methacrylate Styrene/acrylates/acrylonitrile copolymer Styrene/acrylates/ammonium methacrylate copolymer... 

In the waterborne phenolic adhesives, a new dispersion system (98) has been reported. This system uses the solubility of some thermoplastics in phenol, and the subsequent polymerization takes place upon the addition of formaldehyde, an emulsifier, and water. The dispersion is then formed in situ. The versatility of this process is indicated by the use of many polymers with a wide range of properties, e.g., polyvinyl formal, polyvinyl butyral, acrylonitrile-butadiene copolymer, bisphenol-A resins, polyvinyl acetate, polycarbonate, polymethyl methacrylate, and nylons. 

ABS Acrylonitrile-butadiene-styrene EVA Ethylene-vinyl-acetate LDPE Low-density polyethylene GP General purpose N/R Not reported PMMA Polymethyl methacrylate PPO Polyphenylene oxide PTEE Polytetrafluoroethylene PU Polyurethane PVC Polyvinyl chloride PVDE Polyvinylidine fluoride Source Author s own files ... 

ABS Acrylonitrile-butadiene-styrene MoS Molybdenum disulfide PA Polamide(s) PAI Polyamide-imide PBT Polybutylene terephthalate PC Polycarbonate PEEK Polyether ether ketone PEI Polyether-imide PES Polyether sulfone PET Polyethylene terephthalate PI Polyimide PMMA Polymethyl methacrylate POM Polyoxymethylene PP Polypropylene PPO Polyphenylene oxide PPS Polyphenylenesulfide PSU Polysulfone PTFE Polytetrafluoroethyene PVDF Polyvinylidene fluoride UV Ultraviolet ... 

Block co-polymers of styrene/f-butyl methacrylate (MW = 240,000) were analyzed on C]g and phenyl columns (photodiode array detector) using a 15-min 90/10 0/100 methanol/THF gradient [243]. Useful MW distribution characterization resulted when known polystyrene standards were utilized as the molecular weight calibrators. Injections containing 4 pg of polymer were used. Methanol has been used as the polar mobile i ase constituent for co-poly(styrene/acrylonitrile) [244] and styrene/ethyl methacrylate co-polymer analyses [245,246], Ethanol provided increased solubility and was used for polymethyl methacrylate-gra/f-polydimethyl siloxane co-polymers [247]. 

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