期刊
CARBOHYDRATE POLYMERS
卷 202, 期 -, 页码 299-305出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2018.08.137
关键词
Potato starch; Polyvinyl alcohol; Rosin; Melt mixing; Polymer blend
资金
- European Commission (FEDER/ERDF)
- Spanish MINECO [CTQ2016-78246-R]
- Generalitat Valenciana [PROMETEOII/2014/007]
- MINECO (Juan de la Cierva-Formacion contract) [FJCI-2016-28081]
Biodegradable potato starch/PVA samples containing different concentrations of rosin were prepared by meltmixing in order to study the enhancement of the properties of native starch films. Glycerol and polyvinyl alcohol (PVA) are commonly used as plasticizers of starch. Their relatively low molecular weight (compared with starch) contributes to a good processability. Rosin is a renewable product whose incorporation in the starch/PVA matrix induces processing aid and reinforcing effects. Its relatively high molecular weight might prevent its migration to the surface of the final product. Water content, solubility in water, mechanical properties, microstructure and dynamic mechanical analysis of the samples were studied. The addition of 8% rosin to starch/PVA blends led to tensile strength values higher than 10 MPa and elongation at break values close to 2000%, values comparable to those offered by conventional polymers used in food packaging, for example LDPE. Furthermore, starch compounds have low cost and high biodegradability.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据