The fabrication of polylactide/cellulose nanocomposites with enhanced crystallization and mechanical properties

被引：35
作者：
Chai, Hongbin [1 ]
Chang, Yue [1 ]
Zhang, Yunchong [1 ]
Chen, Zhize [1 ]
Zhong, Yi [1 ]
Zhang, Linping [1 ]
Sui, Xiaofeng [1 ]
Xu, Hong [1 ,2 ]
Mao, Zhiping [1 ,2 ]
机构：
[1] Donghua Univ, Innovat Ctr Text Sci & Technol, Coll Chem Chem Engn & Biotechnol, Key Lab Sci & Technol Ecotext,Minist Educ, Shanghai 201620, Peoples R China
[2] Qingdao Univ, Collaborat Innovat Ctr Ecotext Shandong Prov, Qingdao 266071, Peoples R China
来源：
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2020年 / 155卷
关键词：
Polylactide; Cellulose Nanocrystals; Mechanical and crystallization properties; GRAFTED CELLULOSE NANOCRYSTALS; POLYLACTIC ACID; SURFACE-MODIFICATION; POLY(LACTIC ACID); PLA; DEGRADATION; COMPOSITES; POLYMERS; STEREOCOMPLEXATION; POLYMERIZATION;
D O I：
10.1016/j.ijbiomac.2019.11.135
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Polylactide/cellulose nanocompositeswere 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 segmentwas confirmed by Fourier transforminfrared, 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 nanocompositeswith CNCs-PDLA exhibited both high crystallinity and improvedmechanical properties. (C) 2019 Elsevier B.V. All rights reserved.
引用
收藏
页码：1578 / 1588
页数：11
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