|Experimental Chemistry|| Main project page|
Previous entry Next entry
DMA- Dynamic Mechanical Analysis on PVOH films
Following PVOH Films were Cross-linked:
PVOH films were subject to stretch( elastic tension ) mechanical analysis to test its mechanical durability.
The films that were cross-linked in the oven had some considerable changes in color and toughness:
* PVOH MW 100,000- film was firmer and there was no apparent color change. * PVOH MW 22000- no apparent color and physical change that was observed. * PVOH MW 22000 cross linked with H3PO4- film became much tougher and turned a slight yellowish brown color. * PVOH MW 22000 with H3PO4 and maleic acid- no apparent color and physical change that was observed. * PVOH MW 100,000 cross-linked w/ hydrochloric acid- slightly firm, but color change was very prominent- dark, jet blackish.
This area is for any observations or conclusions that you would like to note.