食品胶在干法片材中的应用性能
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Application Performance of Food Gums in Dry-Process Sheets
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    摘要:

    干法片材是将植物粉体通过合适的食品级胶黏剂在纤维纸基材上涂覆成膜而制得。 文中基于不同种类胶黏剂(羧甲基纤维素、羟乙基纤维素、羟丙基纤维素、黄原胶、罗望子多糖、魔芋胶、壳聚糖、明胶、瓜尔胶、阿拉伯胶、改性玉米淀粉、改性木薯淀粉)在干法片材中的性能进行了研究,将其在水中溶解配置不同种类相同浓度的胶黏剂溶液,考察了不同胶黏剂的溶解性、溶液黏度等。 将胶液喷涂于同种基片纤维上,对制备出的片材克重、掉粉率、片材含水率、拉伸强度等物理性质进行了测试,对胶黏剂及相应片材的 350 ℃低温热裂解产物进行了分析,用扫描电镜对片材微结构进行了观察。 结果表明,壳聚糖、阿拉伯胶、黄原胶、瓜尔胶、羧甲基纤维素室温可溶;魔芋胶、瓜尔胶、羧甲基纤维素制备出的干法片材拉伸强度最高,均超过 0.8 kN/ m;羟乙基纤维素、明胶、瓜尔胶的掉粉率最低,且由此 3 种胶黏剂制备的片材结构更加致密;瓜尔胶、羟乙基纤维素、羧甲基纤维素在干法片材中应用效果最佳。

    Abstract:

    Dry-processed sheets are typically fabricated by coating plant powders onto fibrous paper substrates with appropriate food-grade adhesives to form uniform films. In this study, the performance of twelve types of adhesives including carboxymethyl cellulose (CMC), hydroxyethyl cellulose ( HEC), hydroxypropyl cellulose (HPC), xanthan gum ( XG), tamarind polysaccharide ( TPS), konjac gum ( KG), chitosan ( CS), gelatin (GEL), guar gum ( GG ), arabic gum ( AG ), modified corn starch, and modified cassava starch was systematically evaluated for application in dry-processed sheets. Adhesive solutions of identical concentration (all dissolved in deionized water) were prepared for different adhesive types, and their solubility and viscosity were characterized. Subsequently, the adhesive solutions were uniformly sprayed onto substrates composed of the same base fiber. The physical properties of the resulting sheets, including basis mass, powder shedding rate, moisture content, and tensile strength were comprehensively tested. Furthermore, the low-temperature pyrolysis products (at 350 ℃) of the adhesives and corresponding sheets were analyzed. The morphology and microstructure of the sheets were observed via scanning electron microscopy (SEM). Results show that CS, AG, XG, GG and CMC are soluble at room temperature. Dry-processed sheets prepared with KG, GG, and CMC exhibit the highest tensile strength (>0.8 kN / m). HEC, GEL and GG display the lowest powder shedding rates. Sheets fabricated using HEC, GEL and GG possess denser microstructures. Overall, GG, HEC and CMC exhibit the optimal application performance in dry-processed sheets.

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崔紫钰, 周 容, 李宏伟, 候宁宁, 张 臣, 李佶衡, 张军华.食品胶在干法片材中的应用性能[J].高分子材料科学与工程,2026,42(5):112-119. Ziyu Cui, Rong Zhou, Hongwei Li, Ningning Hou, Chen Zhang, Jiheng Li, Junhua Zhang. Application Performance of Food Gums in Dry-Process Sheets[J]. Polymer Materials Science & Engineering,2026,42(5):112-119.

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  • 在线发布日期: 2026-08-31
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