乳胶膜中温度的演变。

Evolving stresses in latex films as a function of temperature.

机构信息

Department of Chemical Engineering and Biotechnology, BP Institute, University of Cambridge, Madingley Road, Cambridge CB3 0EZ, UK.

出版信息

Langmuir. 2010 May 4;26(9):6335-42. doi: 10.1021/la1007439.

DOI:10.1021/la1007439

PMID:20387802

Abstract

Latex films were dried on a flexible substrate, and the substrate deflection was monitored over time to give an averaged film stress-evolution profile. Films were dried at various temperatures below and above the minimum film-formation temperature of the latex dispersion. The effect of polymer rheology, which is a temperature-dependent parameter, on film formation, was investigated. The reliability of the Stoney model in predicting film stress from substrate curvature was also examined and compared to the Euler-Bernoulli model. It was shown that the linearized Stoney model was unsuitable for the larger measured stresses.

摘要

乳胶膜在柔性基底上干燥，同时监测基底的挠度随时间的变化，以给出平均的膜应力演变曲线。膜在低于和高于乳胶分散体的最低成膜温度的各种温度下干燥。研究了聚合物流变学（依赖于温度的参数）对成膜的影响。还检验了用斯托尼模型从基底曲率预测膜应力的可靠性，并与欧拉-伯努利模型进行了比较。结果表明，线性化的斯托尼模型不适合测量较大的应力。