Glycidyl methacrylate copolymers, acrylonitrile

SANGMA Styrene-acrylonitrile-glycidyl methacrylate copolymer... 

After the formulas for rate constants are known, any diad sequence distribution can be calculated in the copolymer with an unknown composition from the dimer yields. The procedure has been studied for several copolymers including poly(acrylonitrile-co-m-chlorostyrene) [17], poly(styrene-co-glycidyl methacrylate) [19], poly(acrylonitrile-co-p-chlorostyrene) [17], poly(styrene-co-methacrylate) [20], poly(styrene-co-p-chlorostyrene) [18], and for other copolymers [14, 21-29]. 

The copolymers of acrylonitrile with methyl methacrylate (A/M), Glycidyl methacrylate (A/G) and acrylic acid (A/B) of different monomer concentrations were prepared. The carbon-13 and proton spectra of these copolymers are overlapping and complex. The complete spectral assignment of and NMR spectra were done with the help of Distortionless Enhacement by Polarisation transfer (DEPT) and two dimensional Heteronuclear Single Quantum Correlation... 

PP poly(propylene), PS poly(styrene), MAH maleic anhydride, MA methacrylic acid, S styrene, PE poly(ethylene), PPE poly(phenylene ether), LDPE low-density PE, EPDM ethylene-propylene-diene terpolymer, SAN styrene-acrylonitrile copolymer, EPR ethylene-propylene copolymer, NMAC A -methacrylyl caprolactam, GMA glycidyl methacrylate, FA fumaric acid, AEFO anhydride and epoxide functionalized olefin copolymer, SEBS styrene/ethylene-butylene/styrene copolymer, HDPE high-density PE, AN acrylonitrile, and S-MAH-MMA styrene-maleic anhydride-methyl methacrylate copolymer. 

Styrene and acrylonitrile copolymer Styrene, butadiene and styrene copolymer Styrene, ethylene, butylenes and styrene copolymer Styrene, ethylene, butylenes and styrene copolymer grafted with glycidyl methacrylate Styrene, ethylene, butylenes and styrene copolymer grafted with maleic anhydride Styrene maleic anhydride Syndiotactic polystyrene... 

Preformed particles are incorporated into the epoxy matrix by simple mechanical mixing. The dispersibility of the particles can be improved by 1) introducing crosslinking into the shell or 2) using comonomer-like acrylonitrile or GMA, which increases the interfacial adhesion by polar or chemical interaction [96, 97]. Quan and co-workers [98] reported that for poly (butadiene-co-styrene) core poly (methyl methacrylate) (PMMA) shell particles, the cluster size reduces from 3-5 pm to 1-3 pm as a result of using 5 wt% crosslinker (divinyl benzene). They also found that the cluster size could be further reduced to 1-2 pm by using a methyl methacrylate-acrylonitrile (MMA-AN) or methyl methacrylate-glycidyl methacrylate (MMA-GMA) copolymer shell composition. 

Dow has prepared a compatibilized blend of PC and linear PE. The compati-bilizer used was EPDM grafted with SAN. The product has high impact strength and good melt processability. Polymer alloys with S-AMS copolymer and PP with styrene-grafted polyolefin copolymer have been reported. Triax 1000 of Monsanto is a blend of nylon and ABS compatibilized with styrene-acrylonitrile and glycidyl methacrylate terpolymer. The compatibilizer often improves the property balance of an immiscible blend. Reactive compatibilization is an emerging technique. 

Iwakura Y, Kurosaki T, Nakabayashi N (1961) Reactive fiber.l. Copolymerization and copolymer of acrylonitrile with glycidyl methacrylate and with glycidyl acrylate. Macromol Chem 44-6 570-590... 

The term acrylic apphes to a family of copolymers of monomers that are polymerized by a chain growth mechanism. Most often, the mechanism of polymerization is by free radical initiation. Other mechanisms of polymerization, such as ionic and group transfer polymerization, are possible but will not be discussed in this publication. For a description of other polymerization mechanisms, polymer textbooks are available (5,6). Technically, acrylic monomers are derivatives of acrylic or methacrylic acid. These derivatives are nonfunctional esters (methyl methacrylate, butyl acrylate, etc.), amides (acrylamide), nitrile (acrylonitrile), and esters that contain functional groups (hydroxyethyl acrylate, glycidyl methacrylate, dimethylaminoethyl acrylate). Other monomers that are not acryhc derivatives are often included as components of acryhc resins because they are readily copolymerized with the acryhc derivatives. Styrene is often used in significant quantities in acryhc copolymers. 

Preparation of cross-linked PAN supports has been reported in the literature by Peinemann et al. (2001), when an epoxidized PAN copolymer was subjected to ammono-lysis providing highly solvent stable [including stability in dimethylformamide (DMF)] supports. A highly solvent-resistant UF membrane based on poly(acrylonitrile-co-glycidyl methacrylate) (PANGMA) was reported (Hicke et al., 2002). This membrane was prepared by phase inversion followed by ammonolysis and was also stable in DMF, thus being a very attractive support for preparation of OSN-TFC membranes. 

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