816 二酸化炭素雰囲気中におけるポリカプロラクトンの発泡に及ぼす分子量の影響

概要

論文の詳細を見る
Degradation of polycaprolactone (PCL) with different molecular weights in the near super-critical atmosphere of carbon dioxide was investigated. As a result, the PCL specimen with the smaller molecular weight was degraded more easily. Moreover, the higher temperature and pressure induced the remarkable degradation of PCL. The carbon dioxide was absorbed into the PCL specimens under the high-pressure conditions and released as the specimens was return in air. The amount of carbon dioxide absorbed in the PCL was maximized at the whitening condition and decreased by starting the forming. The maximum value of absorption was increased with the increasing molecular weight of PCL and decreased with increasing temperature of carbon dioxide. These results were likely caused by the molecular weight of PCL because the invasion and release of carbon dioxide were affected by the length of PCL molecule, namely tangling of molecule.
一般社団法人日本機械学会の論文
2002-03-14