title: Application and appreciation of chemical sand fixing agent-poly (aspartic acid) and its composites.
abstract: The sand fixing agent-poly (aspartic acid) (PASP) and its composites were applied in the field by two forms (spraying around by PASP solution and PASP powder directly). It was found that the sand fixing effect in powder form was not as good as in solution form, but it was more practical in dry region. It needed 9, 6 and 7 days for PASP, xanthan gum-PASP (X2) and ethyl cellulose-PASP (E3) to attain the maximal mechanical strength after they were applied, respectively. The sand fixing effect decreased when the material was subjected to repeated hydration-dehydration cycles and the material had no negative influence on plant growth. The PASP and its composites had water-retaining ability and could reduce the water evaporation.
authors.affiliation: Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
authors.forename: Jun
authors.initials: J
authors.lastname: Yang
authors.forename: Hui
authors.initials: H
authors.lastname: Cao
authors.forename: Fang
authors.initials: F
authors.lastname: Wang
authors.forename: Tianwei
authors.initials: T
authors.lastname: Tan
mesh_terms: D000042:Absorption; D001673:Biodegradation, Environmental; D003188:Composite Resins; D019245:Compressive Strength; D003247:Conservation of Natural Resources / Q000379:methods*; D018525:Germination; D010455:Peptides; D012639:Seeds; D012822:Silicon Dioxide; D012987:Soil / Q000032:analysis; D012995:Solubility; D013501:Surface-Active Agents; D014867:Water / Q000032:analysis
chemical_list: D003188:Composite Resins; D010455:Peptides; D012987:Soil; D013501:Surface-Active Agents; D014867:Water; C017645:polyaspartate; D012822:Silicon Dioxide