Studies of Starch esters Filled Polyethylene on Material

• Main Authors: Liou, Shi Huang, 劉士煌
• Other Authors: Chang, Iun He
• Format: Others
• Language: zh-TW
• Published: 1993
• Online Access: http://ndltd.ncl.edu.tw/handle/26957408026427624904

碩士 === 中原大學 === 化學工程研究所 === 81 === We prepared a variety of biodegradable starch esters. And those starch esters were blended with low density polyethylene (LDPE) by toluene at pro- per temperature. Test pieces were made from the mixture mentioned above for understanding the in- fluences of fillers, percent of substituted group and filler percent on processibility of LDPE. At process temperature (150-190℃), generally, starch butyrate was better on fluidity of LDPE than starch acetate except starch acetate having acetyl content of 44.7%. At ordinary temperature, starch esters is ra- ther plasticity in comparsion with starch, and the plasticity of starch esters decreases in sequence of 21.6% butyryl, 22.7 % acetyl, 44.3% butyryl, 1% butyryl and 1% acetyl content. Above 80℃, the adhesion on compatibility between starch butyrate and LDPE decreases in sequence of 44.3%, 21.6% and 1% butyryl content. The rate of absorption water of blend polymers is greater with starch among fillers, and generally , increases in seqence of 44.7% acetyl, 44.3% butyryl, 22.7% acetyl, 21.6% butyryl, 1% acetyl and 1% butyryl content.