Amorphous sheets of PLA resins are thermoformed by heating the sheets until they become semicrystalline, and then forming the sheets on a relatively cold mold. Semicrystalline formed articles having improved heat resistance are made by the process.

 
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< Second order nonlinear optical polyimides having benzobisthiazole-based pendant groups, and preparation of the same

> Conjugate addition reactions for the controlled delivery of pharmaceutically active compounds

> Alkali soluble polymer and positive working photosensitive resin composition using the same

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