羧甲基纤维素增强膜的制备及性能

发布时间：2018-04-20 18:48

本文选题：羧甲基纤维素 + 纳米纤维素　；参考：《包装工程》2017年17期

【摘要】：目的为了获得一种可用于食品包装的羧甲基纤维素增强膜。方法以羧甲基纤维素(CMC)为成膜基底,甘油为增塑剂,分别将质量分数为1%,3%,5%和10%的纳米纤维素(NCC)添加到CMC中,共混流延制备羧甲基纤维素增强膜(CMC-NCC)。结果 NCC的加入,提高了CMC的力学性能和对水蒸气的阻隔性能,还提高了CMC的热性能。FT-IR分析结果表明,CMC与NCC两者间形成了分子间氢键;XRD分析结果表明,NCC可以改变CMC的结晶排列。当添加质量分数为5%的NCC时,CMC-NCC的拉伸强度比纯CMC膜提高了25.6%,断裂伸长率降低了21.3%,透湿量降低了9%,热稳定性提高了2%,透光率维持在87%以上。结论 CMC增强膜具有力学性能高、阻湿性能好等优点,NCC提高了CMC的成膜品质。
[Abstract]:Objective to obtain a carboxymethyl cellulose reinforced membrane for food packaging. Methods Carboxymethyl cellulose (CMC) was used as the film substrate and glycerol as plasticizer. The CMC-NCCs were added to CMC with 5% and 10% nanocellulose by mass fraction, respectively. Results the addition of NCC improved the mechanical properties and barrier properties of CMC to water vapor, and the thermal properties of CMC. FT-IR analysis showed that the formation of intermolecular hydrogen bonds between CMC and NCC showed that NCCs could change the crystalline arrangement of CMC. When 5% NCC was added, the tensile strength of CMC-NCC was 25.6% higher than that of pure CMC film, the elongation at break was decreased by 23.3%, the moisture permeability was decreased by 9%, the thermal stability was increased by 2%, and the transmittance was maintained at more than 87%. Conclusion CMC reinforced film has the advantages of high mechanical properties, good moisture resistance and so on. It can improve the film forming quality of CMC.
【作者单位】：齐齐哈尔大学;
【基金】：黑龙江省教育厅基本业务专项(135109305) 大学生创新创业训练计划(201710221132) 齐齐哈尔大学教研青年项目(2015063)
【分类号】：TB484

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