|Doane, William - 3620-45-00(RETIRED)|
|Lawton Jr, John|
Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: June 7, 2000
Publication Date: N/A
Technical Abstract: This research focused on the mechanical, structural and thermal properties of injection molded composites of granular cornstarch, poly(D,L-lactic acid) (PDLLA) and poly(hydroxyester-ethers) (PHEE). These composites were compounded on a twin screw extruder prior to injection molding. They had high tensile strengths (40-50 MPa) at starch loadings up to 70% by weight. SEM micrographs of fractured specimens revealed good adhesion of starch to the polymer matrix, as evidenced by broken starch granules. The crystallinity of the poly(D,L-lactic acid) in the blends was studied using differential scanning calorimetry and wide-angle X-ray diffraction. Data on the effects of starch and PHEE on PDLLA crystallization will also be presented.