Accession Number : AD0759381

Title :   Development of a Synthetic Polymer Burn Covering.

Descriptive Note : Progress rept. no. 1, 1 Feb-23 Mar 73,

Corporate Author : DYNATECH R/D CO CAMBRIDGE MASS

Personal Author(s) : Gregory,John B. ; Schwope,Arthur D. ; Wise,Donald L.

Report Date : 30 MAR 1973

Pagination or Media Count : 32

Abstract : In the study for the development of a synthetic burn covering, lactic acid monomer has been bulk polymerized to the polymer, polylactic acid (PLA), with molecular weights ranging from 20,000 to 45,000 using a tetraphenyl tin catalyst. Films (0.001 to 0.003 inches in thickness) of PLA have been cast. Pervaporation rates of water through the PLA films have been measured to be approximately 10 gm-mm/24 hr square m in a 37 C, 0% relative humidity (R.H.) ENVIRONMENT AND APPROXIMATELY 4 GM MM/24 HR SQUARE M IN A 37 C, 53% R.H. environment. Tensile strength, elongation at break, and Young's Moduli of 300,000 to 450,000 psi (jaw separation rate 0.1 inches/min) have been calculated using stress-strain data from standard tensile tests. (Author, modified-PL)

Descriptors :   (*BURNS(INJURIES), *PLASTICS), MEDICAL SUPPLIES, SURGICAL SUPPLIES, POLYMERS, TENSILE PROPERTIES, EVAPORATION, ELASTIC PROPERTIES, PERMEABILITY

Subject Categories : Medical Facilities, Equipment and Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE