采用氢氧化钠和异氰酸酯处理的界面调控方法对竹纤维(BF)增强聚乳酸(PLA)复合材料界面进行调控,通过注射成型工艺制备BF/PLA复合材料.利用FTIR、XRD、凝胶渗透色谱及SEM等分析手段研究了BF/PLA复合材料热老化性能.研究发现:热老化过程中PLA分子链中的C=O不断水解,分子链的C—O断裂生成聚合度更低的小分子量的PLA,PLA结晶度减小,PLA与BF的接合界面被破坏,拉伸强度和冲击强度随老化时间的增加逐渐降低.BF/PLA复合材料在80℃热老化16天后拉伸强度和冲击强度分别降低了75％和77.6％,在100℃热老化32h后拉伸强度和冲击强度分别降低了80.3％和83.4％.温度对BF/PLA复合材料老化影响显著,温度越高,老化速度越快.
参考文献
| [1] | 李春光,徐鹏飞,李云霞,等.玉米秸秆微晶纤维素/聚乳酸复合膜的制备与性能[J].复合材料学报,2011,28(4):94-98.Li Chunguang,Xu Pengfei,Li Yunxia,et al.Preparation and properties of corn stalks cellulose microcrystal reinforced poly(lactic acid) composite film[J].Acta Materiae Compositae Sinica,2011,28(4):94-98. |
| [2] | Wu Tzongming,Wu Chengyang.Biodegradable PLA/chitosan modified montmorillonite nano-composites:Preparation and characterization[J].Polymer Degradation and Stabilit,2006,91(2):198-204. |
| [3] | 陈更新.多元复合共混改性理论指导研制新型生物全降解材料改性聚乳酸产品[J].塑料包装,2010,20(1):15-18.Chen Gengxin.Multiple composite blending modification theoretical guidance for the development of new bio-biodegradable materials modified PLA products[J].Plastics Packaging,2010,20(1):15-18. |
| [4] | 蒋波,黄光琳.氧化镁表面辐射接枝聚合反应机理研究[J].应用化学,1997,14(1):95-97.Jiang Bo,Huang Guanglin.Reaction mechanism of radiation induced graft polymerization on MgO surface[J].Chinese Journal of Applied Chemistry,1997,14(1):95-97. |
| [5] | 罗传旭,赵名艳,李立华,等.海藻酸钙水凝胶/聚乳酸复合材料的制备与性能[J].复合材料学报,2012,29(2):87-92.Luo Chuanxu,Zhao Mingyan,Li Lihua,et al.Preparation and characterization of calcium alginate hydrogel/poly L-lactic acid composite[J].Acta Materiae Compositae Sinica,2012,29(2):87-92. |
| [6] | Nishino T,Hirao K,Kotera M,et al.Kenaf reinforced biodegradable composite[J].Composites Science and Technolog,2003,63(9):1281-1286. |
| [7] | Ndazi B S,Karlsson S,Tesha J V,Nyahumwa C W.Chemical and physical modifications of rice husks for use ascomposite panels[J].Composites:Part A,2007,38(3):925-935. |
| [8] | Ohkita T,Lee S H.Thermal degradation and biodegradability of poly(lactic acid)/corn starch biocomposites[J].J Appl Polym Sci,2006,100(4):3009-3017. |
| [9] | 曹勇,柴田信一.甘蔗渣的碱处理对其纤维增强全降解复合材料的影响[J].复合材料学报,2006,23(3):60-67.Cao Yong,Shibata Shinichi.Effect of alkali treated bagasse fibres on fibre-reinforced biodegradable composites[J].Acta Materiae Compositae Sinica,2006,23(3):60-67. |
| [10] | Oliveira N S,Goncalves C M,Coutinho J A P,et al.Carbon dioxide,ethylene and water vapor sorption in poly(lactic acid)[J].Fluid Phase Equilibria,2006,250:116-124. |
| [11] | Ljungberg N,Andersson T.Film extrusion and film weldability of poly(lactic acid) plasticized with triacetine and tributyl citrate[J].Journal of Applied Polymer Science,2003,88(14):3239-3247. |
| [12] | 中国国家标准化管理委员会.GB/T 13525-1992塑料拉伸冲击性能试验方法[S].北京:中国标准出版社,1992.Standardization Administration of the People's Republic of China.GB/T 13525-1992 Test methods of the plastic tensile and impact properties[S].Beijing:China Standard Press,1992. |
| [13] | 潘峤,姚正军,周 畅,等.SiO2/ZnO复合微粒对聚乳酸力学性能和结晶度的影响[J].塑料工业,2012,40(1):27-30.Pan Qiao,Yao Zhengjun,Zhou Chang,et al.Effect of SiO2/ZnO on the mechanical properties and crystallinity of PLA[J].China Plastics Industry,2012,40(1):27-30. |
| [14] | Ohkita T,Lee S H.Crystallization behavior of poly(butylene suceinate)/corn starch biodegradable composite[J].J Appl Polym Sci,2005,97:1107-1114. |
| [15] | 郭文静.木纤维/聚乳酸生物质复合材料复合因子研究[D].北京:中国林业科学研究院,2008.Guo Wenjing.The study on compounding factors of wood fiber/poly(lactic acid) bio-composites[D].Beijing:Chinese Academy of Forestr,2008. |
| [16] | Plackett D.Maleated polylactide as an interfacial compatibilizer in biocomposites[J].Journal of Polymers and the Environment,2004,12:131-138. |
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