| PVA-魔芋葡甘聚糖包装膜的拉伸性能 |
| |
| 引用本文： | 张莉琼,周秋莹,梁继锋,刘建烽,熊立贵. PVA-魔芋葡甘聚糖包装膜的拉伸性能[J]. 合成树脂及塑料, 2020, 37(2): 18-20. DOI: 10.19825/j.issn.1002-1396.2020.02.05 |
| |
| 作者姓名： | 张莉琼 周秋莹 梁继锋 刘建烽 熊立贵 |
| |
| 作者单位： | 中山火炬职业技术学院 包装学院,广东省中山市 528436,中山火炬职业技术学院 包装学院,广东省中山市 528436,中山火炬职业技术学院 包装学院,广东省中山市 528436,中山火炬职业技术学院 包装学院,广东省中山市 528436,广东理工职业学院 机电工程学院,广东省中山市 528458 |
| |
| 基金项目： | 国家级大学生科技创新项目 |
| |
| 摘 要： | 在山梨醇与甘油复配增塑剂的作用下,聚乙烯醇与魔芋葡甘聚糖共混形成凝胶状聚电解质水溶液,经流延、干燥,制备了包装膜。结果表明:当共混温度超过80℃,共混时间超过3.5 h,包装膜拉伸强度和断裂拉伸应变急剧下降;复配增塑剂中,山梨醇与甘油的质量比为(1∶1)1∶3时,有利于提高包装膜的拉伸强度。包装膜拉伸性能变化的微观原因主要是低分子电解质的扩散-停止-继续扩散-析出,从而使共混体系在平衡状态-均相状态-失衡状态-非均相状态之间变化。
|
| 关 键 词： | 聚乙烯醇 魔芋葡甘聚糖 拉伸强度 断裂拉伸应变 |
Tensile properties of PVA-KGM packaging films |
| |
| Zhang Liqiong,Zhou Qiuying,Liang Jifeng,Liu Jianfeng,Xiong Ligui. Tensile properties of PVA-KGM packaging films[J]. China Synthetic Resin and Plastics, 2020, 37(2): 18-20. DOI: 10.19825/j.issn.1002-1396.2020.02.05 |
| |
| Authors: | Zhang Liqiong Zhou Qiuying Liang Jifeng Liu Jianfeng Xiong Ligui |
| |
| Affiliation: | (Institute of Packaging,Zhongshan Torch Polytechnic,Zhongshan 528436,China;College of Mechanical and Electrical Engineering,Guangdong Polytechnic College,Zhongshan 528458,China) |
| |
| Abstract: | Konjac glucomannan(KGM)and poly(vinyl alcohol)(PVA)were mixed to form gel-like polyelectrolyte solution with glycerol and sorbitol as compound plasticizer,which was used to prepare packaging films via casting and drying.The results show that the tensile strength and elongation at break of the packaging films drop sharply when the blending temperature and blending time exceed 80℃and 3.5 h.When the mass ratio of sorbitol and glycerol in the compound plasticizer ranges from 1∶1 to 1∶3,it is beneficial to improve the tensile strength of the packaging films.The microscopic reasons for the change of the tensile properties of the packaging films are mainly caused by diffusion-stop-continuing diffusion-precipitation of low-molecular electrolyte,which makes the system shift from equilibrium-homogeneous state-unbalanced state-heterogeneous state. |
| |
| Keywords: | poly(vinyl alcohol) konjac glucomannan tensile strength elongation at break |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
