芳基取代酰肼类化合物对PLLA-PPC合金性能的影响
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摘要
针对聚L-乳酸(PLLA)-聚碳酸亚丙酯(PPC)合金结晶速率慢及韧性低的问题,将质量分数为0.4%的高效成核剂——芳基取代酰肼类化合物(TMBH)加入PLLA/PPC合金中,研究TMBH对PLLA-PPC合金结晶及力学性能的影响.结果表明,在添加TMBH的PLLA-PPC合金中,TMBH可被吸附至PLLA的表面诱导其结晶,使结晶速率加快,PLLA的长周期减小;TMBH及PPC不改变复合材料中PLLA的晶型;TMBH和PPC起到协同提高PLLA断裂伸长率的作用.PLLA-PPC-TMBH的缺口冲击强度高于相对应的合金,其中,当在PLLA/TMBH/PPC的组成比例为80∶0.4∶20时,三元共混材料的缺口冲击强度达到整个体系的最大值(5.1kJ/m2),较纯PLLA提高121.7%.
In order to enhance the poor toughness and low crystallization rate of the alloy of poly(L-lactic acid)(PLLA)and poly(propylene carbonate)(PPC),0.4 wt% of nucleator TMBH was added into PLLA/PPC alloy.The effect of TMBH on the crystallization and mechanical performance of the alloy of PLLA and PPC were researched in detail.The results showed that TMBH could provide more nucleation sites in PLLA/PPC alloy,promote the crystallization of PLLA,accelerate the crystallization rate and decrease the long period of PLLA in the alloy.Meanwhile,TMBH and PPC did not change the crystal form of PLLA in the material.In addition,TMBH and PPC could play a synergistic effect on increasing the elongation at break and the notched impact strength of PLLA.Especially,the notched impact strength of the PLLA/0.4/20 ternary blend material reached the maximum value of 5.1 kJ/m2 and increased by121.7%compared with pure PLLA.
In order to enhance the poor toughness and low crystallization rate of the alloy of poly(L-lactic acid)(PLLA)and poly(propylene carbonate)(PPC),0.4 wt% of nucleator TMBH was added into PLLA/PPC alloy.The effect of TMBH on the crystallization and mechanical performance of the alloy of PLLA and PPC were researched in detail.The results showed that TMBH could provide more nucleation sites in PLLA/PPC alloy,promote the crystallization of PLLA,accelerate the crystallization rate and decrease the long period of PLLA in the alloy.Meanwhile,TMBH and PPC did not change the crystal form of PLLA in the material.In addition,TMBH and PPC could play a synergistic effect on increasing the elongation at break and the notched impact strength of PLLA.Especially,the notched impact strength of the PLLA/0.4/20 ternary blend material reached the maximum value of 5.1 kJ/m2 and increased by121.7%compared with pure PLLA.
引文
[1] FAN Yingqing,YU Zhuyi,CAI Yanhua,et al.Crystallization behavior and crystallite morphology control of poly(L-lactic acid)through N,N′-bis(benzoyl)sebacic acid dihydrazide[J]. Polym Int,2013,62:647-657.
[2]杨斌.绿色塑料聚乳酸[M].北京:化学工业出版社,2007:16-20.
[3]钱伯章.中国聚乳酸的开发和应用进展[J].精细石油化工进展,2012,13(5):53-58.
[4]张涛,石建明,蒋守英.丙交酯精制工艺研究进展[J].化工进展,2010,29(增刊):215-221.
[5] TAN Licheng,CHEN Yiwang,WANG Yang,et al.Melt reaction and structural analysis based on poly(butylene terephthalate)and oligo(lactic acid)with addition of butanediol[J].J Therm Anal Calorim,2010,99(1):269-275.
[6] CHEN Yiwang,ZHU Xiangjun,TAN Licheng,et al.Melting bulk reaction between poly(butylene terephthalate)and poly(ethylene glycol)/DL-oligo(lactic acid)[J].J Appl Polym Sci,2008,108(4):2171-2179.
[7]王勋林,吴胜先.聚碳酸亚丙酯增韧聚乳酸研究[J].塑料工业,2012,40(12):26-28.
[8]石璞,钟苗苗,李福枝,等.聚碳酸亚丙酯(PPC)加工热稳定性研究[J].功能材料,2015,46(15):15090-15094.
[9]高留意,刘亚丽.PPC改性交联PBS的制备与性能[J].塑料,2015,44(3):33-35.
[10]富露祥,谭敬琢,秦航,等.完全生物降解塑料PLA/PPC合金的结构与性能研究[J].塑料工业,2006,34(11):14-16.
[11]丁生芳,罗发亮,王克智,等.成核剂TMC-306对聚乳酸结晶及力学性能的影响[J].塑料工业,2016,44(9):49-54.
[12] YASUNIWA M,TSUBAKIHARA S,SUGIMOTO Y,et al.Thermal analysis of the double-melting behavior of poly(L-lactic acid)[J].Polym Phys,2004,42(1):25-32.
[13] LORENZO M L D.Calorimetric analysis of the multiple melting behavior of poly(L-lactic acid)[J].Journal of Applied Polymer Science,2010,100(4):3145-3151.
[14] PUIGGALI J,IKADA Y,TSUJI H,et al.The frustrated structure of poly(l-lactide)[J].Polymer,2000,41(25):8921-8930.
[15] CARTIER L,OKIHARA T,IKADA Y,et al.Epitaxial crystallization and crystalline polymorphism of polylactides[J].Polymer,2000,41(25):8909-8919.
[16]何勇.不同分子量与构型结构的聚乳酸均聚物与立体共聚物的凝聚态、热力学及结晶动力学研究[D].上海:复旦大学,2008.
[17] SHEN Zhiyuan,LUO Faliang,XING Qian,et al.Effect of an aryl amide derivative on the crystallization behaviour and impact toughness of poly(ethylene terephthalate)[J].Cryst Eng Comm,2016(12):2135-2143.
[2]杨斌.绿色塑料聚乳酸[M].北京:化学工业出版社,2007:16-20.
[3]钱伯章.中国聚乳酸的开发和应用进展[J].精细石油化工进展,2012,13(5):53-58.
[4]张涛,石建明,蒋守英.丙交酯精制工艺研究进展[J].化工进展,2010,29(增刊):215-221.
[5] TAN Licheng,CHEN Yiwang,WANG Yang,et al.Melt reaction and structural analysis based on poly(butylene terephthalate)and oligo(lactic acid)with addition of butanediol[J].J Therm Anal Calorim,2010,99(1):269-275.
[6] CHEN Yiwang,ZHU Xiangjun,TAN Licheng,et al.Melting bulk reaction between poly(butylene terephthalate)and poly(ethylene glycol)/DL-oligo(lactic acid)[J].J Appl Polym Sci,2008,108(4):2171-2179.
[7]王勋林,吴胜先.聚碳酸亚丙酯增韧聚乳酸研究[J].塑料工业,2012,40(12):26-28.
[8]石璞,钟苗苗,李福枝,等.聚碳酸亚丙酯(PPC)加工热稳定性研究[J].功能材料,2015,46(15):15090-15094.
[9]高留意,刘亚丽.PPC改性交联PBS的制备与性能[J].塑料,2015,44(3):33-35.
[10]富露祥,谭敬琢,秦航,等.完全生物降解塑料PLA/PPC合金的结构与性能研究[J].塑料工业,2006,34(11):14-16.
[11]丁生芳,罗发亮,王克智,等.成核剂TMC-306对聚乳酸结晶及力学性能的影响[J].塑料工业,2016,44(9):49-54.
[12] YASUNIWA M,TSUBAKIHARA S,SUGIMOTO Y,et al.Thermal analysis of the double-melting behavior of poly(L-lactic acid)[J].Polym Phys,2004,42(1):25-32.
[13] LORENZO M L D.Calorimetric analysis of the multiple melting behavior of poly(L-lactic acid)[J].Journal of Applied Polymer Science,2010,100(4):3145-3151.
[14] PUIGGALI J,IKADA Y,TSUJI H,et al.The frustrated structure of poly(l-lactide)[J].Polymer,2000,41(25):8921-8930.
[15] CARTIER L,OKIHARA T,IKADA Y,et al.Epitaxial crystallization and crystalline polymorphism of polylactides[J].Polymer,2000,41(25):8909-8919.
[16]何勇.不同分子量与构型结构的聚乳酸均聚物与立体共聚物的凝聚态、热力学及结晶动力学研究[D].上海:复旦大学,2008.
[17] SHEN Zhiyuan,LUO Faliang,XING Qian,et al.Effect of an aryl amide derivative on the crystallization behaviour and impact toughness of poly(ethylene terephthalate)[J].Cryst Eng Comm,2016(12):2135-2143.