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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and properties of water-resistant soy dreg/benzyl konjac glucomannan composite plastics
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Preparation and properties of water-resistant soy dreg/benzyl konjac glucomannan composite plastics

机译：耐水性大豆渣/苄基魔芋葡甘露聚糖复合塑料的制备及性能

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Biodegradable plastics based on soy dreg (SD) were prepared with glycerol as a plasticizer via compression molding at 110-160degreesC. The effects of the glycerol content and molding temperature on the processability and mechanical properties were investigated. For enhanced water resistivity of the SD plastics, thermoplastic benzyl konjac glucomannan (B-KGM) films were covered on SD sheets in a lamination compression process, and SD/B-KGM (SB) composite sheets were obtained. The structure and properties of the SB sheets were studied with Fourier transform infrared spectroscopy, dynamic mechanical thermal analysis (DMTA), scanning electron microscopy, and tensile testing. The results indicated that the tensile strength of the SB sheets was enhanced to 13.2 MPa in the dry state and to 11.4 MPa in the wet state. The water resistivity of the SB sheets with B-KGM covers increased from 0.03 to 0.86 with an increase in the B-KGM thickness from 0 to 35 mum. The multipeaks of a tan delta relaxation that appeared in the DMTA spectra for SB series sheets were due to multicomponents such as soy protein, cellulose, polysaccharide, and B-KGM. The tan delta transition temperature and the decomposition temperature of cellulose in SB sheets were higher than those in SD sheets without B-KGM covers. This work provided a simple way of improving the compression-molding processability and water resistivity of SD plastics for practical applications. (C) 2003 Wiley Periodicals, Inc. [References: 30]
机译：以甘油为增塑剂的可降解大豆残渣（SD）为基础，通过在110-160℃下的压缩成型法制备。研究了甘油含量和成型温度对加工性能和机械性能的影响。为了提高SD塑料的耐水性，在层压压缩工艺中将热塑性苄基魔芋葡甘露聚糖（B-KGM）膜覆盖在SD板上，从而获得SD / B-KGM（SB）复合板。通过傅立叶变换红外光谱，动态机械热分析（DMTA），扫描电子显微镜和拉伸试验研究了SB板的结构和性能。结果表明，SB片材的拉伸强度在干燥状态下提高到13.2MPa，在湿润状态下提高到11.4MPa。带有B-KGM覆盖层的SB板的耐水性从0.03增至0.86，而B-KGM厚度从0增至35微米。 SB系列片材的DMTA光谱中出现的tanδ弛豫的多峰归因于大豆蛋白，纤维素，多糖和B-KGM等多组分。 SB纸的tanδ转变温度和纤维素的分解温度高于没有B-KGM覆盖纸的SD纸。这项工作提供了一种简单的方法，可以改善实际应用中SD塑料的压模加工性能和耐水性。 （C）2003 Wiley Periodicals，Inc. [参考：30]

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