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首页> 外文期刊>Journal of Polymers and the Environment >Preparation and Characterization of Gamma Irradiated Sugar Containing Starch/Poly (Vinyl Alcohol)-Based Blend Films
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Preparation and Characterization of Gamma Irradiated Sugar Containing Starch/Poly (Vinyl Alcohol)-Based Blend Films

机译：含淀粉/聚乙烯醇的γ射线辐照糖的制备与表征

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摘要

Blends based on different ratios of starch (35-20%) and plasticizer (sugar; 0-15%) keeping the amount of poly(vinyl alcohol) (PVA) constant, were pre pared in the form of thin films by casting solutions. The effects of gamma-irradiation on thermal, mechanical, and morphological properties were investigated. The studies of mechanical properties showed improved tensile strength (TS) (9.61 MPa) and elongation at break (EB) (409%) of the starch-PVA-sugar blend film containing 10% sugar. The mechanical testing of the irradiated film (irradiated at 200 Krad radiation dose) showed higher TS but lower EB than that of the non-radiated film. FTIR spectroscopy studies supported the molecular interactions among starch, PVA, and sugar in the blend films, that was improved by irradiation. Thermal properties of the film were also improved due to irradiation and confirmed by thermo mechanical analysis (TMA), differential thermo-gravimet-ric analysis (DTG), differential thermal analysis (DTA), and thermo-gravimetric analysis (TGA). Surface of the films were examined by scanning electron microscope (SEM) image that supported the evidence of crosslinking obtained after gamma irradiation on the film. The water up take and degradation test in soil of the film were also evaluated. In this study, sugar acted as a good plasticizing agent in starch/PVA blend films, which was significantly improved by gamma radiation and the prepared starch PVA-sugar blend film could be used as biodegradable packaging materials.
机译：通过浇铸溶液以薄膜形式制备基于淀粉（35-20％）和增塑剂（糖； 0-15％）的不同比例的共混物，使聚乙烯醇（PVA）的量保持恒定。研究了γ辐照对热，机械和形态性能的影响。力学性能研究表明，含10％糖的淀粉-PVA-糖共混膜的抗张强度（TS）（9.61 MPa）和断裂伸长率（EB）（409％）提高。辐照过的薄膜（以200 Krad辐照剂量辐照）的机械测试显示，与未辐照的薄膜相比，TS更高，但EB更低。 FTIR光谱研究支持共混膜中淀粉，PVA和糖之间的分子相互作用，这种相互作用通过辐照得以改善。膜的热性能也由于辐照而得到改善，并通过热机械分析（TMA），差示热重分析（DTG），差示热分析（DTA）和热重分析（TGA）进行了确认。通过扫描电子显微镜（SEM）图像检查膜的表面，该图像支持在γ射线照射在膜上之后获得的交联的证据。还评估了膜的土壤中的吸水率和降解测试。在这项研究中，糖在淀粉/ PVA掺合物薄膜中起着良好的增塑剂的作用，通过γ射线辐射可以显着改善糖分，制备的淀粉PVA-糖掺合物薄膜可以用作可生物降解的包装材料。

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  • 来源
    《Journal of Polymers and the Environment》 |2011年第4期|p.1013-1022|共10页
  • 作者

    Fahmida Parvin; Mubarak A. Khan; A. H. M. Saadat; M. Anwar H. Khan; Jahid M. M. Islam; Mostak Ahmed; M. A. Gafur;

  • 作者单位

    Institute of Radiation and Polymer Technology, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh,Department of Environmental Sciences, Jahangirnagar University, Savar, Dhaka, Bangladesh;

    Institute of Radiation and Polymer Technology, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh;

    Department of Environmental Sciences, Jahangirnagar University, Savar, Dhaka, Bangladesh;

    Department of Geography, University of California Berkeley,Berkeley, CA 94720, USA;

    Institute of Radiation and Polymer Technology, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh;

    Institute of Radiation and Polymer Technology, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh;

    PP and PDC, BCSIR, Dhaka, Bangladesh;

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  • 正文语种 eng
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  • 关键词

    biodegradable materials; blend film; gamma irradiation; tensile properties; plasticizers;

    机译：可生物降解的材料;混合膜伽马射线拉伸性能增塑剂;

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