Application of LDPE/biodegradable starch blend in blown films

作者：Yeh Jen Taut^*; Chai Wan Lan; Wu Chin San

来源：Journal of Polymer Engineering, 2007, 27(6-7): 483-506.

• polyethylene
• starch
• maleic anhydride
• blends
• biodegradable

The aim of this work is to prepare biodegradable blends of low-density polyethylene (LDPE) and starch that can be used for film blowing. In order to increase the compatibility between LDPE and starch, maleic anhydride was used to graft onto the LDPE molecules (LDPE-g-MAH). Mechanical properties together with the soil and enzyme degradation tests of the LDPE/starch and LDPE-g-MAH/starch specimens were studied. After using the proper composition and processing condition, the sigma(f) and epsilon(f) values of LDPE-g-MAH/starch blown film specimen are significantly higher than those of the LDPE/starch film specimens with the same starch contents. The biodegradation tests showed that most of the starch particles present in LDPE/starch and LDPE-g-MAH/starch specimens can be degraded within 6 weeks.

• 出版日期2007
• 单位湖北大学