Covalent grafting of carbon nanotubes to PLA in order to improve compatibility

被引：47

作者：

Gonzales Seligra, Paula ^{[1
,2
]}

Nuevo, Federico ^{[1
,2
]}

Lamanna, Melisa ^{[3
]}

Fama, Lucia ^{[4
,5
]}

机构：

[1] Univ Buenos Aires, Fac Ciencias Exactas & Nat, LP&MC, Dep Fis, RA-1428 Buenos Aires, DF, Argentina

[2] IFIBA CONICET, Buenos Aires, DF, Argentina

[3] Univ Buenos Aires, Ctr Invest Hidratos Carbono CIHIDECAR CONICET, Dpto Quim Organ, Fac Ciencias Exactas & Nat, RA-1428 Buenos Aires, DF, Argentina

[4] Univ Buenos Aires, Grp Mat Avanzados, INTECIN UBA CONICET, Dpto Ingn Mecan,Fac Ingn, RA-1428 Buenos Aires, DF, Argentina

[5] Consejo Nacl Invest Cient & Tecnol CONICET, Buenos Aires, DF, Argentina

来源：

COMPOSITES PART B-ENGINEERING | 2013年 / 46卷

关键词：

Polymer matrix composites (PMCs); Physical properties; Mechanical testing; Casting; FOOD-PACKAGING APPLICATIONS; MECHANICAL-PROPERTIES; COMPOSITES; NANOCOMPOSITES; CRYSTALLIZATION; POLYMER; ACID); FUNCTIONALIZATION; POLY(L-LACTIDE); CONDUCTIVITY;

D O I：

10.1016/j.compositesb.2012.10.013

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An excellent methodology for the synthesis of nanocomposite materials using a biodegradable polymer as matrix (polylactic acid, PLA) and functionalized by Fenton reaction carbon nanotubes (fMWCNTs) as reinforcement was developed. PLA was modified with benzoyl chloride and both modified materials were bounded covalently by esterification reaction. Infrared spectroscopy (FTIR) and thermogravimetry (TGA) studies were performed to verify the synthesis of the composites obtained. Films based on modified PLA reinforced with fMWCNTs (PLAmfMWCNTs) were conformed observing excellent dispersion of the filler in the PLA matrix. Finally it was shown that the addition of fMWCNTs improves Young's modulus and strength without losing deformation. Also it was observed that the good stability of the film let us to process it until 300 degrees C. Taking into account all these results, the new biodegradable nanocomposite material developed could be very promising to be used in packaging and biomedical industries as a replacement of the synthetic materials. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：61 / 68

页数：8

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