Publication

Reaction engineering of acrylic water-soluble polymers

Albert Renken, David Hunkeler
1998
Book Chapters

Abstract

The inverse-emulsion polymn. of acrylamide and its copolymn. with quaternized acrylate or methacrylate was studied in the presence of various surfactants. The obtained latexes are transparent and have particle diams. as low as 100 nm and enhanced long-term stability, similar to inverse microemulsions despite of the monomer/emulsifier ratio characteristic for macroemulsions. The prodn. of tailor-made copolymeric flocculants was studied in a semi-batch reactor and the dewatering characteristics of acrylamide-trimethylammonioethyl acrylate copolymers was tested. [on SciFinder (R)]

Official source

https://infoscience.epfl.ch/entities/publication/69351d9b-78d3-42f7-b793-94069178e6b8

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Albert Renken, David Hunkeler
1998
Book Chapters

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/69351d9b-78d3-42f7-b793-94069178e6b8

About this result

Related concepts (9)

Latex

Latex is an emulsion (stable dispersion) of polymer microparticles in water. Latexes are found in nature, but synthetic latexes are common as well. In nature, latex is found as a milky fluid, which is present in 10% of all flowering plants (angiosperms). It is a complex emulsion that coagulates on exposure to air, consisting of proteins, alkaloids, starches, sugars, oils, tannins, resins, and gums. It is usually exuded after tissue injury. In most plants, latex is white, but some have yellow, orange, or scarlet latex.

Natural rubber

Rubber, also called India rubber, latex, Amazonian rubber, caucho, or caoutchouc, as initially produced, consists of polymers of the organic compound isoprene, with minor impurities of other organic compounds. Thailand, Malaysia, Indonesia, and Cambodia are four of the leading rubber producers. Types of polyisoprene that are used as natural rubbers are classified as elastomers. Currently, rubber is harvested mainly in the form of the latex from the rubber tree (Hevea brasiliensis) or others.

Hevea brasiliensis

Hevea brasiliensis, the Pará rubber tree, sharinga tree, seringueira, or most commonly, rubber tree or rubber plant, is a flowering plant belonging to the spurge family Euphorbiaceae originally native to the Amazon basin, but is now pantropical in distribution due to introductions. It is the most economically important member of the genus Hevea because the milky latex extracted from the tree is the primary source of natural rubber. H. brasiliensis is a tall deciduous tree growing to a height of up to in the wild.