ポリ乳酸 化学特性,用途語,生産方法
解説
乳酸の重縮合,あるいはラクチドの開環重合によって合成される生分解性合成高分子,-[O(CH
3)CHOC]
n-.ポリラクチドともいう.ポリ-L-乳酸,ポリ-D-乳酸,およびポリ-DL-乳酸があるが,いずれも生分解性である.医療・医薬用材料のほか,汎用プラスチック代替品としての利用も始まっている.
説明
Polylactic acid (PLA) is a green, novel, nontoxic, biodegradable, biobased, innovative thermoplastic packaging material. With enhanced strength, transparency, and high elastic modulus, this polymer can be derived from renewable sources like starch and/or sugar. Its glass transition lies between 50 and 80 °C, and its crystalline melting temperature varies from 130 to 180 °C. PLA exhibits a unique, viable, biodegradable substitute for plastics. Generally, bio-decomposition of PLA takes place in approximately 6–24 months, depending on the environmental conditions.
Biochem/physiol Actions
Poly(D,L-lactide) is a polyamino acid that has been used to as a coating material.
ポリ乳酸 上流と下流の製品情報
原材料
準備製品