Date of Award

6-1960

Degree Name

Bachelor of Science

Department

Pulp and Paper Technology

First Advisor

Dr. A. H. Nadelman

Abstract

A literature survey was conducted to determine what work, if any, had been done on dialdehyde starch as a coating adhesive. As a result of the survey, it was decided that experimental work would be started with the hope of overcoming some of the difficulties which confronted previous investigators and investigating further the use of dialdehyde starch as an adhesive.

After experimental preparation and evaluation of the coated and aftertreated sheets, the following conclusions were formed:

1. The addition of ten percent borax buffered or bisulphite buffered dialdehyde starch to conventional oxidized starch increases the surface strength of the coating as well as the wet rub resistance.

2. Aftertreatment with the starch dispersions increases the surface strength of the coating and the wet rub resistance.

3. Bisulphite buffered dialdehyde starch is a better coating adhesive and "waterproofer" than borax buffered dialdehyde starch.

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