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Studies on the physical properties of modified starch-filled HDPE film

✍ Scribed by Bong Gyu Kang; Sung Hwa Yoon; Suck Hyun Lee; Jae Eue Yie; Byung Seon Yoon; Moon Ho Suh

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 886 KB
Volume: 60
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19960613)60:11<1977::aid-app22>3.0.co;2-x

No coin nor oath required. For personal study only.

✦ Synopsis

To improve the physical properties of starch-filled polyolefin, starch was modified into more hydrophobic material by the introduction of cholesterol unit, and the different starchcompositioned high-density polyethylene (HDPE) films were prepared with addition of either native starch or modified starch to compare their physical properties. The addition of either native starch or modified starch resulted in decreased crystallinities in all the different composite films containing starch. Interestingly, HDPE-blown films containing more than 10% native starch (HDPE/ST) showed a steeper decrease in crystallinity than correspondent HDPE containing the modified starch (HDPE/MS). Improvement of the dispersion and adhesion in HDPE/MS and HDPE/ST were also observed; but at high starch content, the HDPE/MS films showed higher tensile strength and elongation than the HDPE/ST. The degradation of HDPE/MS films in active sludge condition was much faster than that of the HDPE/ST films, although the degradation rate of HDPE/MS films in a-amylase condition were slower than the one of HDPE/ST films.

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