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

页码：1578 / 1588

页数：11

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