Structure and functional properties of cellulose acetate films incorporated with glycerol

被引：104

作者：

Goncalves, Sheyla Moreira ^{[1
]}

dos Santos, Daiane Cardial ^{[2
]}

Gomes Motta, Joyce Fagundes ^{[3
]}

dos Santos, Regiane Ribeiro ^{[1
]}

Hidalgo Chavez, Davy William ^{[1
]}

de Melo, Nathalia Ramos ^{[1
,3
]}

机构：

[1] UFRRJ, Dept Ciencia & Tecnol Alimentos, Rodovia BR 465,Km 7, BR-23891360 Seropedica, RJ, Brazil

[2] UFF, Dept Engn Met & Mat, Av Trabalhadores 420, BR-27255125 Volta Redonda, RJ, Brazil

[3] UFF, Dept Engn Agronegocios, Av Trabalhadores 420, BR-27255125 Volta Redonda, RJ, Brazil

来源：

CARBOHYDRATE POLYMERS | 2019年 / 209卷

关键词：

Food packaging; Physicochemical properties; Plasticizer; Mechanical properties; CASSAVA STARCH; PHYSICAL-PROPERTIES; BARRIER PROPERTIES; PLASTICIZERS;

D O I：

10.1016/j.carbpol.2019.01.031

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Tests were performed with cellulose acetate films (CA) incorporating 5, 10, 20, 30, and 50% (w/v) of glycerol with the purpose of evaluating the possible changes caused by the plasticizer on the functional properties of the packaging. The glass transition temperature (Tg) and relative crystallinity (RC) were are obtained by DSC and XRD, respectively. The results showed that, the presence of glycerol in the films caused increased thickness, water vapor transmission rate (WVTR), and optical properties for most treatments. Moreover, morphological changes were evidenced in scanning electron microscopy (SEM). A reduction of tensile strength (TS) and Young's modulus (YM) was observed only in the concentration of 50% of glycerol. Therefore, the results suggest that there was an interaction between glycerol and cellulose acetate, demonstrating that the film has potential for use as food packaging.

引用

页码：190 / 197

页数：8

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