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Environmentally Friendly DVD-ROM Using Polylactic Acid Polymer Alloy As a Substrate

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Abstract

Polylactic acid (PLA) is a plant-based plastic, which is derived from annually renewable resources such as corn, thus it is an environmentally friendly material. However, the thermal resistance of pure PLA is insufficient for optical disc use. To improve the thermal resistance we developed a newly polymer alloy that consists of a PLA as a main component, and fabricated a DVD-ROM whose substrate is made of the new polymer alloy. This disc showed excellent static optical property, and satisfied with the fundamental specifications of physical and signal characteristics. The results of high temperature and humidity tests reveals that the PLA-polymer alloy DVD-ROM with an 8cm diameter has the durability on room use and distribution from a factory to consumers.

© 2005 Optical Society of America

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