TY - JOUR
T1 - Study of stress development in aqueous gelatin coatings
AU - Payne, Jason A.
AU - Mccormick, Alon V.
AU - Francis, Lorraine F.
PY - 1999
Y1 - 1999
N2 - A cantilever deflection technique was used to monitor stress during the drying of aqueous gelatin coatings. Photographic-grade gelatin was dissolved in deionized water and coated, chilled, and dried. The final average in-plane tensile stress ranged from 0 to 50 MPa. Measured stresses were independent of the coating thickness and initial solution concentration. At low relative humidity (0%) and low drying temperature (approximately 20 °C), the stress grew with time, reaching a constant average magnitude of 46 MPa. Raising the relative humidity above 0% or raising the temperature above 50 °C changed the manner in which stress evolved. Stress rose to a peak value and then relaxed to a lower final value. Humidity affected stress evolution more than did temperature, within the limits of this work.
AB - A cantilever deflection technique was used to monitor stress during the drying of aqueous gelatin coatings. Photographic-grade gelatin was dissolved in deionized water and coated, chilled, and dried. The final average in-plane tensile stress ranged from 0 to 50 MPa. Measured stresses were independent of the coating thickness and initial solution concentration. At low relative humidity (0%) and low drying temperature (approximately 20 °C), the stress grew with time, reaching a constant average magnitude of 46 MPa. Raising the relative humidity above 0% or raising the temperature above 50 °C changed the manner in which stress evolved. Stress rose to a peak value and then relaxed to a lower final value. Humidity affected stress evolution more than did temperature, within the limits of this work.
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U2 - 10.1002/(SICI)1097-4628(19990725)73:4<553::AID-APP11>3.0.CO;2-Z
DO - 10.1002/(SICI)1097-4628(19990725)73:4<553::AID-APP11>3.0.CO;2-Z
M3 - Article
AN - SCOPUS:0032674359
SN - 0021-8995
VL - 73
SP - 553
EP - 561
JO - Journal of Applied Polymer Science
JF - Journal of Applied Polymer Science
IS - 4
ER -