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首页> 外文期刊>Journal of Polymers and the Environment >Effect of Nanoclay Addition on the Biodegradability and Performance of Starch-Based Nanocomposites as Mulch Films
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Effect of Nanoclay Addition on the Biodegradability and Performance of Starch-Based Nanocomposites as Mulch Films

机译：NanoClay添加对淀粉基纳米复合材料作为覆盖膜的生物降解性和性能的影响

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摘要

The biodegradation and performance of potential agricultural mulch films prepared from native and oxidized corn starch nanocomposites with chitosan-modified bentonite were studied under simulated soil test conditions. Samples were removed at different times and their wet and dry weights were registered. A photographic register of films appearance was also included. Bio-physicochemical changes along biodegradation progress were followed by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TG). Results indicate that all samples degraded in a three step process and that they almost fully degrade by 100days of testing. The chemical modification of starch and the addition of fillers did not produce significant differences in biodegradation rate. Microbialattack, mainly byfungal microorganisms started at the end of the first week and produced a 50% weight loss in approximately 35days. Biological assays indicate that germination was negatively affected by proposed starch-based films.
机译：在模拟土壤试验条件下研究了由天然和氧化玉米淀粉纳米复合材料制备的潜在农业覆膜膜的生物降解和性能，采用壳聚糖改性膨润土。在不同时间除去样品，并注册它们的湿和干重。还包括薄膜外观的摄影寄存器。沿生物降解进展的生物物理化学改变之后是扫描电子显微镜（SEM），傅里叶变换红外光谱（FTIR）和热重分析（TG）。结果表明，所有样品都在三步过程中降低，并且它们几乎完全降低了100天的测试。淀粉的化学改性和添加填料的添加并未产生差异的生物降解率。 Microbalattack，主要是逐年微生物在第一周结束时开始，在大约35天内产生50％的体重减轻。生物学测定表明，由所提出的淀粉基薄膜产生萌发。

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  • 来源
    《Journal of Polymers and the Environment》 |2019年第9期|1959-1970|共12页
  • 作者

    Merino Danila; Mansilla Andrea Y.; Casalongue Claudia A.; Alvarez Vera A.;

  • 作者单位

    Univ Nacl Mar Del Plata UNMdP Fac Ingn Inst Invest Ciencia & Tecnol Mat INTEMA Grp Mat Compuestos Termoplast CoMP Av Colon 10850 RA-7600 Mar Del Plata Buenos Aires Argentina|Consejo Nacl Invest Cient & Tecn Consejo Nacl Invest Cient & Tecn Av Colon 10850 RA-7600 Mar Del Plata Buenos Aires Argentina;

    Univ Nacl Mar Del Plata Fac Ciencias Exactas & Nat UE CONICET UNMDP Inst Invest Biol Dean Funes 3250 RA-7600 Mar Del Plata Buenos Aires Argentina;

    Univ Nacl Mar Del Plata Fac Ciencias Exactas & Nat UE CONICET UNMDP Inst Invest Biol Dean Funes 3250 RA-7600 Mar Del Plata Buenos Aires Argentina;

    Univ Nacl Mar Del Plata UNMdP Fac Ingn Inst Invest Ciencia & Tecnol Mat INTEMA Grp Mat Compuestos Termoplast CoMP Av Colon 10850 RA-7600 Mar Del Plata Buenos Aires Argentina|Consejo Nacl Invest Cient & Tecn Consejo Nacl Invest Cient & Tecn Av Colon 10850 RA-7600 Mar Del Plata Buenos Aires Argentina;

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  • 正文语种 eng
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  • 关键词

    Oxidized starch; In-soil biodegradation; Mulch films; Biodegradable; Bentonite; Chitosan;

    机译：氧化淀粉;土壤生物降解;覆盖膜;可生物降解;膨润土;壳聚糖;

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