On the graft polymerization of styrene and acrylonitrile onto polybutadiene in the presence of vinyl acetate. II. Properties of graft polymers

1992 ◽  
Vol 45 (1) ◽  
pp. 79-84
Author(s):  
Jürgen Schellenberg ◽  
Bernd Hamann
Keyword(s):  
Vinyl Acetate ◽  
Graft Polymerization ◽  
Graft Polymers

scholarly journals Radiation-Induced Asymmetric Grafting of Different Monomers into Base Films to Prepare Novel Bipolar Membranes

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 2028
Author(s):  
Shin-ichi Sawada ◽  
Yasunari Maekawa
Keyword(s):  
Acrylic Acid ◽  
Anion Exchange ◽  
Graft Polymerization ◽  
The Other ◽  
Practical Applications ◽  
Bipolar Membranes ◽  
Graft Polymers ◽  
Grafting Reactions ◽  
Radiation Induced

We prepared novel bipolar membranes (BPMs) consisting of cation and anion exchange layers (CEL and AEL) using radiation-induced asymmetric graft polymerization (RIAGP). In this technique, graft polymers containing cation and anion exchange groups were introduced into a base film from each side. To create a clear CEL/AEL boundary, grafting reactions were performed from each surface side using two graft monomer solutions, which are immiscible in each other. Sodium p-styrenesulfonate (SSS) and acrylic acid (AA) in water were co-grafted from one side of the base ethylene-co-tetrafluoroethylene film, and chloromethyl styrene (CMS) in xylene was simultaneously grafted from the other side, and then the CMS units were quaternized to afford a BPM. The distinct SSS + AA- and CMS-grafted layers were formed owing to the immiscibility of hydrophilic SSS + AA and hydrophobic CMS monomer solutions. This is the first BPM with a clear CEL/AEL boundary prepared by RIAGP. However, in this BPM, the CEL was considerably thinner than the AEL, which may be a problem in practical applications. Then, by using different starting times of the first SSS+AA and second CMS grafting reactions, the CEL and AEL thicknesses was found to be controlled in RIAGP.

scholarly journals GRAFT POLYMERIZATION OF VINYL ACETATE ONTO CELLULOSIC MATERIALS

1970 ◽  
Vol 26 (4) ◽  
pp. 163-167
Author(s):  
Yoshitaka Ogiwara ◽  
Kenichira Arai
Keyword(s):  
Vinyl Acetate ◽  
Graft Polymerization ◽  
Cellulosic Materials

Graft polymerization of methyl acrylate–vinyl acetate mixtures onto starch

1993 ◽  
Vol 49 (9) ◽  
pp. 1679-1682 ◽  
Author(s):  
G. F. Fanta ◽  
D. Trimnell ◽  
J. H. Salch
Keyword(s):  
Vinyl Acetate ◽  
Methyl Acrylate ◽  
Graft Polymerization

scholarly journals GRAFT POLYMERIZATION OF STYRENE AND VINYL ACETATE ONTO NYLON FABRIC IMBIBING CATALYSTS

1964 ◽  
Vol 20 (9) ◽  
pp. 613-616 ◽  
Author(s):  
Ichiro Sakurada ◽  
Yasuyoshi Sakaguchi ◽  
Yasui Sakai
Keyword(s):  
Vinyl Acetate ◽  
Graft Polymerization ◽  
Nylon Fabric

scholarly journals Development of a Simplified Radiation-Induced Emulsion Graft Polymerization Method and Its Application to the Fabrication of a Heavy Metal Adsorbent

Polymers ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1373 ◽  
Author(s):  
Masaaki Omichi ◽  
Yuji Ueki ◽  
Noriaki Seko ◽  
Yasunari Maekawa
Keyword(s):  
Heavy Metal ◽  
Graft Polymerization ◽  
Gamma Ray ◽  
High Dose Rate ◽  
High Dose ◽  
Grafting Reaction ◽  
Monomer Solution ◽  
Graft Polymers ◽  
Radiation Induced ◽  
Heavy Metal Adsorbent

A simplified radiation-induced emulsion graft polymerization (SREG) method is proposed. This method involves a convenient and easy degassing process of a monomer solution using a commercially available sealed glass jar. A loaded weight on the lid of the jar was used to control the jar’s internal pressure as the degassing of the monomer solution took place using a vacuum pump. The degassing method was highly reproducible, resulting from no bumping of the monomer solution. The initial grafting velocity was proportional to the absorbed doses of pre-irradiation between 5 and 20 kGy. This result indicates that dissolved oxygen was sufficiently eliminated from the monomer solution at such a level where the remaining oxygen had little effect on the grafting reaction at a dose of 5 kGy. The method was then applied to the fabrication of a heavy metal adsorbent that possessed a sufficient adsorption capacity of Co(II) ions. The SREG method is applicable to the fabrication of a wide variety of functional graft polymers because high-dose-rate gamma-ray radiation and expensive experimental equipment are not necessary.

The photolysis of polymethylvinylketone - II. The preparation of graft polymers

1955 ◽  
Vol 233 (1193) ◽  
pp. 172-183 ◽  
Keyword(s):  
Free Radicals ◽  
Methyl Methacrylate ◽  
Vinyl Acetate ◽  
Chemical Structure ◽  
Vinyl Monomer ◽  
Chemical Compositions ◽  
Type I ◽  
Usual Type ◽  
Wide Range ◽  
Graft Polymers

In the photodegradation of polymethylvinylketone, free radicals are formed by the usual type I reaction of ketone photolysis. When this polymer is degraded with light of 313 mμ in a solution of a vinyl monomer which does not absorb at this wavelength, these free radicals initiate further polymerization. Studies have been made of this reaction using acrylonitrile, methyl methacrylate and vinyl acetate, and evidence is presented that graft polymers are formed in which long chains of poly-methylvinylketone are attached chemically to extended sequences of monomer units of a different chemical structure. It has been shown that this reaction can be extended to copolymers containing relatively few ketone groups, thereby making it possible to synthesize graft polymers with a wide range of chemical compositions.

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