Poly(lactic acid) biocomposites with mango waste and organo-montmorillonite for packaging

被引：29

作者：

Bezerra Lima, Edla Maria ^{[1
]}

Lima, Aline Muniz ^{[1
]}

Silva Minguita, Adriana Paula ^{[1
]}

Rojas dos Santos, Natalia Rodrigues ^{[2
]}

Soares Pereira, Ingrid Cristina ^{[2
]}

Matta Neves, Thiago Torres ^{[2
]}

da Costa Goncalves, Lucas Felix ^{[2
]}

Duarte Moreira, Ana Paula ^{[3
]}

Middea, Antonieta ^{[4
]}

Neumann, Reiner ^{[4
]}

Bruno Tavares, Maria Ines ^{[5
]}

Oliveira, Renata Nunes ^{[6
]}

机构：

[1] Brazilian Agr Res Corp, EMBRAPA Food Technol, Brasilia, DF, Brazil

[2] Univ Fed Rural Rio de Janeiro, Dept Chem Engn, Rio De Janeiro, RJ, Brazil

[3] Univ Fed Rio de Janeiro, COPPE, Mat & Met Engn Program, Rio De Janeiro, RJ, Brazil

[4] CETEM, Ctr Mineral Technol, Rio De Janeiro, RJ, Brazil

[5] Univ Fed Rio de Janeiro, Macromol Inst, Rio De Janeiro, RJ, Brazil

[6] Univ Fed Rural Rio de Janeiro, DEQ, Postgrad Program Chem Engn, Rio De Janeiro, RJ, Brazil

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2019年 / 136卷 / 21期

关键词：

biopolymers and renewable polymers; polyesters; spectroscopy; POLY-LACTIC-ACID; POLYLACTIC ACID; ACID)/STARCH BLENDS; PLA; NANOCOMPOSITE; COMPOSITES; STARCH; FOOD; FILMS; CRYSTALLIZATION;

D O I：

10.1002/app.47512

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Poly(lactic acid) (PLA) is a biodegradable polymer used in packaging, but its properties can be improved by manufacturing composite matrixes. The combination of PLA, starch, and nano-montmorillonite leads to materials with superior mechanical properties. Mango lump is rich in cellulose and starch. The goal of this study is to develop and characterize biocomposites based on PLA, mango waste, and nano-organo-montmorillonite for packaging. The samples were microstructurally, morphologically, and mechanically characterized. Physical interaction between the phases was observed. The mango components displaced the PLA X-ray diffraction peaks and the clays altered their intensity, by interfering with chain packing. The addition of single components to PLA increased the samples' transition temperatures, but the addition of multiple components diminished them. PLA showed adhesiveness to cellulose fibers and nonadhesiveness to starch granules. Thicker samples presented better mechanical properties. PLA-mango-"chocolate clay" samples are relatively stable materials, while PLA-mango-"bofe clay" samples could represent promising highly biodegradable materials. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47512.

引用

页数：11

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