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Some Commercial Polymer Emulsions and Their Combination with Starch Dispersions for Stabilizing Soil Particles in Water
Author(s) -
Weaver M. O.
Publication year - 1990
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.19900420605
Subject(s) - emulsion , starch , polymer , polyethylene , cationic polymerization , chemical engineering , acrylic polymer , materials science , acrylate , acrylic resin , polymer chemistry , chemistry , composite material , copolymer , organic chemistry , coating , monomer , engineering
Starch can be converted to starch‐g‐poly(methyl acrylate) (S‐g‐PMA) latexes in a number of weight proportions, (S to PMA), that will give excellent stabilization of soil particles to water. To extend the study of additives for use as soil stabilizers we treated test soil samples with five different commercial polymer emulsions: three of acrylic type and two of ethylenic (polyethylene) type. Two of the acrylic emulsions, Acrylic DLR and Rhoplex WL92, fully stabilize soil at a treatment level of 0.2 g polymer/100 g soil; this is twice the treatment level required by the S‐g‐PMA latexes for full stabilization (defined as 90% retention of treated soil after wet sieving). The third acrylic emulsion, Rhoplex AC388, did not function as well as DLR or WL92. The two polyethylene emulsions, Mycon HD and Sunkem 301, did not stabilize soil to water as well as DLR or WL92. We examined physical mixtures of Amioca (waxy cornstarch), regular cornstarch, or cationic cornstarch and synthetic polymer emulsions and found that 50% of the acrylic polymers can be replaced with Amioca, and at the 0.2 g/100 g soil treatment level show the same or increased soil retention after wet sieving compared to polymer emulsion alone.