| Literature DB >> 31751689 |
Hongbin Chai1, Yue Chang1, Yunchong Zhang1, Zhize Chen1, Yi Zhong1, Linping Zhang1, Xiaofeng Sui1, Hong Xu2, Zhiping Mao3.
Abstract
Polylactide/cellulose nanocomposites were fabricated by blending of commercial polylactide (PLA) and modified cellulose nanocrystals (CNCs). Modified CNCs were prepared via the in situ polymerization of CNCs and L-lactic acid (CNCs-PLLA) or D-lactic acid (CNCs-PDLA). The actual occurrence of chemical bond between CNCs and PLA segment was confirmed by Fourier transform infrared, nuclear magnetic resonance, X-ray diffraction and solubility tests. Differential scanning calorimetry and X-ray diffraction characterization indicated that CNCs-PDLA better improved the crystallization ability of PLA matrix compared with CNCs-PLLA. Furthermore, compared with the neat PLA (60.0 MPa), the tensile strength of resulting nanocomposites showed an enhancement of up to 36% (81.65 MPa). And the nanocomposites with CNCs-PDLA exhibited both high crystallinity and improved mechanical properties.Entities:
Keywords: Cellulose Nanocrystals; Mechanical and crystallization properties; Polylactide
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Year: 2019 PMID： 31751689 DOI： 10.1016/j.ijbiomac.2019.11.135
Source DB: PubMed Journal: Int J Biol Macromol ISSN： 0141-8130 Impact factor: 6.953