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3)(OH)HCOOH with loss of water (hence its name). It can also be prepared by ring-opening polymerization of lactide [–C(CH 3)HC(=O)O–] 2, the cyclic dimer of the basic repeating unit. Often PLA is blended with other polymers. PLA can be biodegradable or long-lasting, depending on the manufacturing process, additives and copolymers.
The Boston Harbor reclamation project that began in the 1980s became the focus of debate over the legality of PLAs. [12] [13] When the Massachusetts Water Resources Authority elected to use a PLA for the project that mandated union-only labor, [14] the Associated Builders and Contractors of Massachusetts/Rhode Island, Inc. challenged its legality, asserting that the use of a PLA was prohibited ...
El Pla del Penedès, a municipality in the comarca of Alt Penedès, Spain; El Pla de Santa Maria, a municipality in the comarca of the Alt Camp, Spain; Le Pla, a commune in southwestern France; Pla d'Urgell, a comarca in Catalonia, Spain
Mulch film made of polylactic acid (PLA)-blend bio-flex. Polylactic acid (PLA) is a transparent plastic produced from maize [44] or dextrose. Superficially, it is similar to conventional petrochemical-based mass plastics like PS. It is derived from plants, and it biodegrades under industrial composting conditions.
PLA schematic example. A programmable logic array (PLA) is a kind of programmable logic device used to implement combinational logic circuits.The PLA has a set of programmable AND gate planes, which link to a set of programmable OR gate planes, which can then be conditionally complemented to produce an output.
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The Public Library Association (PLA), a division of the American Library Association, is a professional association of public librarians and supporters dedicated to the "development and effectiveness of public library staff and public library services."
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