Calculation of T-g and MFFT depression due to added coalescing agents

被引：30

作者：

Toussaint, A

DeWilde, M

Molenaar, F

Mulvihill, J

机构：

[1] TNO,CTR COATINGS RES,NL-2600 JA DELFT,NETHERLANDS

[2] FORBAIRT,DUBLIN 9,IRELAND

来源：

PROGRESS IN ORGANIC COATINGS | 1997年 / 30卷 / 03期

关键词：

latex films; latex particle sintering and coalescence; minimum film formation temperature; plasticizing efficiency;

D O I：

10.1016/S0300-9440(96)00685-6

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A model is proposed allowing the a priori calculation of the lowering Delta T of the glass transition temperature (or equivalently the minimum film formation temperature MFFT) of latex particles on the addition of coalescing agents. Inversely the model allows the calculation of the volume (or weight) fraction of coalescing agent to be added to a latex in order to lower its MFFT by Delta T. The model is based on the free volume concept and the knowledge of the distribution coefficient of the coalescent representing the distribution between the polymer particles and the aqueous phase. The model also works well when applied to mixtures of coalescing agents. (C) 1997 Elsevier Science S.A.

引用

页码：179 / 184

页数：6