Renewable rice straw cellulose nanofibril reinforced poly(?-caprolactone) composite films

In this study, cellulose nanofibrils (CNFs) fabricated from rice straw were utilized to reinforce poly(?-caprolactone) (PCL), and the structure properties of these CNF/PCL composite films analyzed by morphology observation measurements X-ray diffraction (XRD), differential scanning calorimeter (DSC), thermogravimetric analyzer (TGA), mechanical property water absorption. The experimental results revealed that in PCL matrix, CNF exhibits a homogeneous distribution at low content, but shows some aggregates high content. incorporated doesn't change crystal type, crystallinity melting temperature PCL, accelerates crystallization due its heterogeneous nucleating agent effect. Compared with film, show obvious improvement tensile strength Young's modulus increments 7.5% 10% CNFs 76% 15% respectively. However, after content exceeds 10%, begins decrease, loading also causes remarkable negative influences on thermal stability hydrophobicity films. reinforced can be employed packaging biomedical applications.