Soy protein isolate/poly(lactic acid) injection-molded biodegradable blends for slow release of fertilizers

被引：56

作者：

Calabria, Luciane ^{[2
]}

Vieceli, Nathalia ^{[2
]}

Bianchi, Otavio ^{[3
]}

Boff de Oliveira, Ricardo Vinicius ^{[3
]}

do Nascimento Filho, Iraja ^{[2
]}

Schmidt, Vanessa ^{[1
]}

机构：

[1] Univ Fed Santa Maria, Dept Quim, BR-97105900 Santa Maria, RS, Brazil

[2] UCS, CCET, BR-95070560 Caxias Do Sul, RS, Brazil

[3] Univ Fed Rio Grande do Sul, Inst Quim, BR-90040060 Porto Alegre, RS, Brazil

来源：

INDUSTRIAL CROPS AND PRODUCTS | 2012年 / 36卷 / 01期

关键词：

Release; Fertilizer; Soy protein isolate; Poly(lactic acid); Biodegradable blends; Melt processing; SODIUM DODECYL-SULFATE; WHEAT GLUTEN FILMS; MECHANICAL-PROPERTIES; COMPOUND FERTILIZER; WATER-RETENTION; PHOSPHORUS; SUPERABSORBENT; PLASTICIZERS; FORMULATIONS; DEGRADATION;

D O I：

10.1016/j.indcrop.2011.08.003

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

A slow release fertilizer system consisting of materials derived exclusively from biomass, and suitable foci) production of injection-molded parts such as containers for growing plants, and ii) use as granules, is reported. Soy (Glycine max L. Merr.) protein isolate/poly(lactic acid) blends plasticized with triacetin (SPI/PLA-TA) were used as matrix for NPK fertilizer incorporation. Upon melt processing, this composite material formed a highly ordered porous matrix of SPI in which PLA domains are homogeneously dispersed with NPK salts. Dynamic conductivity measurements indicated good release properties as the cumulative amount increased much slower with time as compared to pure NPK sample. Biodegradation was accessed by examining weight loss and surface morphology as a function of incubation time in soil. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：41 / 46

页数：6

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