소나무 기반 펄프로 제조된 MFC 및 MFC 필름 특성 비교

In this study, microfibrillated celluloses (MFCs) from radiata pine organosolv pulp and from unbleached and bleached radiata pine kraft pulps, which are commercially available, were prepared and subsequently used to produce MFC films. The MFC from the unbleached pulp having the higher aspect ratio at a given fibrillation process showed a better dispersibility during the film fabrication process, resulting in a strong film strength development compared to the bleached kraft and organosolv pulps. The MFC derived from the organosolv pulp was easily fibrillated compared to other pulps. However, it presented a low water retention value and poor film strength development due to its high residual lignin content, suggesting that the controlling of residual lignin contents by blending different MFCs could be a valuable option to boost the film strength.