Copolymerization of acrylonitrile with 2‐hydroxyalkyl methacrylates

Bajaj, P.; Jain, Prashant K.; Gangopadhyay, D.

doi:10.1002/pol.1979.170170228

Cited by 14 publications

(3 citation statements)

References 19 publications

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“…From Table II it appears that the threshold degradation temperature falls as AN is copolymerized with more and more polar monomers. This might be due to a loss of symmetry of the copolymer16 in comparison with the homopolymer, as well as a reduction of nitrile dipolar bonding. With increasing acid, ester, or pyrrolidone comonomer percent in the copolymer the threshold degradation temperature decreases while the rate of decomposition increases.…”

Section: Resultsmentioning

confidence: 99%

Development of methanol selective membranes for separation of methanol-methyl tertiary butyl ether mixtures by pervaporation

Ray

Sawant

Pangarkar

1999

J. Appl. Polym. Sci.

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Several copolymers of acrylonitrile (AN) were synthesized. Methanol selective membranes were prepared from these copolymers of AN. The other monomers in the copolymers were selected on the basis of their solubility parameter values relative to those of methanol. These were hydroxyethyl methacrylate, methacrylic acid, and vinyl pyrrolidone. Thus, pervaporative separation of methanol from its mixture with methyl tertiary butyl ether over the entire concentration range of 0 -100% methanol was studied using these copolymer membranes of AN. For each copolymer of AN three different membranes with different copolymer compositions were prepared. Copolymers of AN with hydroxyethyl methacrylate and methacrylic acid showed high selectivity and moderate flux for methanol (2561, 773, 0.057, and 0.045 kg/m 2 h, respectively, with a membrane of 50-m thickness for a feed mixture containing 5% methanol at 30°C). A copolymer of AN with vinyl pyrrolidone showed comparable flux, but methanol selectivity of this membrane was poor.

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Section: Resultsmentioning

confidence: 99%

Development of methanol selective membranes for separation of methanol-methyl tertiary butyl ether mixtures by pervaporation

Ray

Sawant

Pangarkar

1999

J. Appl. Polym. Sci.

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“…1. Rate of conversion in water and water-acetone (2:l v/v) medium: AN: (1) in water; (4) in water-acetone. AN-CHPA (2) in water; (5) in water-acetone.…”

Section: Resultsmentioning

confidence: 99%

Copolymerization of acrylonitrile with 3‐chloro, 2‐hydroxy‐propyl acrylate and methacrylate

Bajaj¹,

Padmanaban²

1983

J. Polym. Sci. Polym. Chem. Ed.

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Acrylonitrile (AN) was copolymerized with 3‐chloro, 2‐hydroxy propyl acrylate (CHPA) and 3‐chloro, 2‐hydroxy‐propyl methacrylate (CHPMA) in water and water‐acetone medium at 40°C with potassium persulfate and sodium metabisulfite as redox initiators. Copolymer composition was determined from the nitrogen content. The reactivity ratios for the AN‐CHPMA system were also calculated by the Kelen–Tudos method. The reactivity ratio r2 (CHPMA) was higher for the AN‐CHPMA system in both media, which indicated higher reactivity of CHPMA toward the propagation species. Addition of acetone decreases r2 and increases r1. It was found that the copolymers prepared in water medium were not completely soluble in dimethylformamide (DMF); the insoluble fraction was rich in CHPA/CHPMA and increased with increasing comonomer composition. The influence of the acrylate comonomer on properties such as solubility and intrinsic viscosity was also studied.

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“…The composition of copolymers was determined by analysis of hydroxyl content, as reported previously [1]. INTRINSIC VISCOSITY.…”

Section: Introductionmentioning

confidence: 99%

Studies on Acrylonitrile-Hydrozyalkyl-Methacrylate Copolymer Fibers

Bajaj

Sengupta

Jain

1980

Textile Research Journal

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The effect cf wet spinning conditions on the properties of acrylonitrile-2-hydroxyethyl methacrylate (AN-HEMA) and acrylonitrile-2-hydroxypropyl methacrylate (AN-HPMA) copolymer fibers were studied. Copolymers containing 1 to 4.8 mole% hydroxyalkylmethacrylate comonomer were synthesized by slurry polymerization using redox initiator. The spinning dope used was a 15% solution of polymer in dimethylformamide. The spinning conditions studied were: extrusion pressure, coagulating bath temperature, take-up velocity, and draw ratio. Low coagulating bath temperature and high draw ratio gave fiber with better strength properties. Sonic modulus and x-ray diffraction were used for studying the molecular orientation and crystalline organization. The influence of hydrophilic comonomers in polyacrylonitrile on moisture sorption, dyeability, and tensile properties was considered.

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Copolymerization of acrylonitrile with 2‐hydroxyalkyl methacrylates

Cited by 14 publications

References 19 publications

Development of methanol selective membranes for separation of methanol-methyl tertiary butyl ether mixtures by pervaporation

Development of methanol selective membranes for separation of methanol-methyl tertiary butyl ether mixtures by pervaporation

Copolymerization of acrylonitrile with 3‐chloro, 2‐hydroxy‐propyl acrylate and methacrylate

Studies on Acrylonitrile-Hydrozyalkyl-Methacrylate Copolymer Fibers

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