Nano-biocomposite films with modified cellulose nanocrystals and synthesized silver nanoparticles

被引：138

作者：

Fortunati, E. ^{[1
]}

Rinaldi, S. ^{[2
,3
]}

Peltzer, M. ^{[4
]}

Bloise, N. ^{[5
,6
]}

Visai, L. ^{[5
,6
]}

Armentano, I. ^{[1
]}

Jimenez, A. ^{[4
]}

Latterini, L. ^{[2
,3
]}

Kenny, J. M. ^{[1
,7
]}

机构：

[1] Univ Perugia, UdR INSTM, Mat Engn Ctr, I-05100 Terni, Italy

[2] Univ Perugia, Dipartimento Chim, I-06123 Perugia, Italy

[3] Univ Perugia, Ctr Eccellenza Mat Innovativi Nanostrutturati, I-06123 Perugia, Italy

[4] Univ Alicante, Dept Analyt Chem Nutr & Food Sci, E-03080 Alicante, Spain

[5] Univ Pavia, UdR INSTM, Dept Mol Med, I-27100 Pavia, Italy

[6] Salvatore Maugeri Fdn, IRCCS, Lab Nanotechnol, Dept Occupat Med Ergon & Disabil, I-27100 Pavia, Italy

[7] CSIC, Inst Polymer Sci & Technol, Madrid 28028, Spain

来源：

CARBOHYDRATE POLYMERS | 2014年 / 101卷

关键词：

Nano-biocomposites; Cellulose nanocrystals; Silver nanoparticles; Barrier properties; Migration properties; Antibacterial activity; POLY(LACTIC ACID); ANTIMICROBIAL AGENTS; MIGRATION PROPERTIES; THERMAL-PROPERTIES; NANOCOMPOSITES; POLYLACTIDE; BIODEGRADABILITY; MICROSTRUCTURE; POLYPROPYLENE; COMPOSITES;

D O I：

10.1016/j.carbpol.2013.10.055

中图分类号：

O69 [应用化学];

学科分类号：

070301 [无机化学];

摘要：

Ternary nano-biocomposite films based on poly(lactic acid) (PLA) with modified cellulose nanocrystals (s-CNC) and synthesized silver nanoparticles (Ag) have been prepared and characterized. The functionalization of the CNC surface with an acid phosphate ester of ethoxylated nonylphenol favoured its dispersion in the PLA matrix. The positive effects of the addition of cellulose and silver on the PLA barrier properties were confirmed by reductions in the water permeability (WVP) and oxygen transmission rate (OTR) of the films tested. The migration level of all nano-biocomposites in contact with food simulants were below the permitted limits in both non-polar and polar simulants. PLA nano-biocomposites showed a significant antibacterial activity influenced by the Ag content, while composting tests showed that the materials were visibly disintegrated after 15 days with the ternary systems showing the highest rate of disintegration under composting conditions. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：1122 / 1133

页数：12

共 59 条

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Microwave Heating Causes Rapid Degradation of Antioxidants in Polypropylene Packaging, Leading to Greatly Increased Specific Migration to Food Simulants As Shown by ESI-MS and GC-MS [J].