Effect of airflow presence during the manufacturing of biodegradable films from polymers with different structural conformation

被引：23

作者：

Yaneli Aguirre-Loredo, Rocio ^{[1
]}

Velazquez, Gonzalo ^{[2
]}

Gutierrez, Miguel C. ^{[3
]}

Castro-Rosas, Javier ^{[1
]}

Rangel-Vargas, Esmeralda ^{[1
]}

Alberto Gomez-Aldapa, Carlos ^{[1
]}

机构：

[1] Univ Autonoma Estado Hidalgo, Area Acad Quim, Inst Ciencias Basicas & Ingn, Ciudad Conocimiento, Carretera Pachuca Tulancingo Km 4-5, Mineral De La Reformera 42184, Hidalgo, Mexico

[2] Inst Politecn Nacl, CICATA IPN, Unidad Queretaro, Cerro Blanco 141, Queretaro 76090, Qro, Mexico

[3] Inst Politecn Nacl, CONACyT, CIIDIR Unidad Oaxaca, Hornos 1003, Xoxocotlan 71230, Oaxaca, Mexico

来源：

FOOD PACKAGING AND SHELF LIFE | 2018年 / 17卷

关键词：

Biodegradable film; Starch; Polyvinyl alcohol; Drying; Water adsorption isotherm; POLYVINYL-ALCOHOL FILMS; MECHANICAL-PROPERTIES; PHYSICAL-PROPERTIES; WATER SORPTION; COMPOSITE FILMS; AMYLOSE CONTENT; STARCH TYPE; REAL-TIME; CHITOSAN; BARRIER;

D O I：

10.1016/j.fpsl.2018.06.007

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

The preparation method to obtain biodegradable films has an important effect on their performance. The drying of film-forming solutions is a very important step usually ignored during the manufacturing of biodegradable films. The objective of this study was to evaluate the effect of the drying process (natural convection or forced convection) on the functional properties of films from polymers with different structure. The film-forming solutions were dried using airflow (forced convection) and no air circulation (natural convection). Films from polyvinyl alcohol (PVOH, with linear structure) and polymers with different degree of branching (potato starch and high amylose corn starch) were evaluated. Films dried in forced convection showed important changes in the water adsorption, mechanical and thermal properties. Drying under forced convection could have promoted the formation of intermolecular bonds during the rearrangement of the polymer chains resulting in films with greater barrier to water vapor and better mechanical performance.

引用

页码：162 / 170

页数：9

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