分别以水、碳酸氢氨、偶氮二甲酰胺/氧化锌(m(AC)/m(ZnO)=2:1)为发泡剂,废纸浆为增强体,木薯淀粉为基质,聚乙烯醇(PVA)为增韧体,甘油和尿素作为复合增塑剂,辅以其它的各种助剂,利用挤出发泡法制备出可生物降解复合发泡材料,它们分别记作WPS、NPS、APS.并分别讨论和比较这些发泡材料的密度、发泡倍率、吸水性、热稳定性以及泡孔形态.研究结果显示,随着发泡剂含量的增加材料的表观密度先减少后增加,发泡倍率、吸水率则先增加后减少；NPS的热稳定性能最佳,APS稳定性次之,WPS稳定性最差；随着发泡剂含量的增加,材料泡孔数量先增加后减少,孔径先减小后增大,APS泡孔大小较WPS、NPS分布均匀,泡孔数量较WPS、NPS分布多.
参考文献
| [1] | Artz W E;Warren R V .Twin-screw extrusion modification of a corn fiber and coin starch extruded blend[J].Journal of Food Science,1990,55:746-754. |
| [2] | Bhatnagar S;Hanna M A .Physical,mechanical and thermal properties of starch-based plastic foams[J].Transactions of the ASAE,1995,38(02):567-571. |
| [3] | 曾广胜,林瑞珍,孟聪,陈磊,翟金平.AC／ZnO发泡剂系对植物纤维增强淀粉复合发泡材料性能的影响[J].功能材料,2012(06):708-711. |
| [4] | Bastioli C;Bellotti V;Trediciet G D .Biodegradable foamed articles and process for the preparation thereof[P].US:5589518,1996-12-31. |
| [5] | Laura G;Carr;Duclerc F et al.Influence of fibers on the mechanical properties of cassava starch foams[J].Journal of Polymers and the Environment,2006,14:179-183. |
| [6] | P. Cinelli;E. Chiellini;J.W. Lawton;S.H. Imam .Foamed articles based on potato starch, corn fibers and poly(vinyl alcohol)[J].Polymer Degradation and Stability,2006(5):1147-1155. |
| [7] | Nabar;Yogaraj;Narayan.Biodegradable starch foam packaging for automotive applications[A].Detroit,2004:157. |
| [8] | Ganjyal GM;Reddy N;Yang YQ;Hanna MA .Biodegradable packaging foams of starch acetate blended with corn stalk fibers[J].Journal of Applied Polymer Science,2004(6):2627-2633. |
| [9] | 刘玉环,高龙兰,罗爱香,阮榕生,刘成梅.毛竹屑与玉米淀粉共液化产物制备聚氨酯泡沫研究[J].高分子学报,2008(06):544-549. |
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