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首页> 外文期刊>Journal of Applied Polymer Science >Thermal and mechanical properties of poly(lactic acid)/starch/methylenediphenyl diisocyanate blending with triethyl citrate
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Thermal and mechanical properties of poly(lactic acid)/starch/methylenediphenyl diisocyanate blending with triethyl citrate

机译：聚乳酸/淀粉/亚甲基二苯基二异氰酸酯与柠檬酸三乙酯共混的热力学性能

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摘要

Triethyl citrate (TC) was added as a plasticizer to a blend of poly(lactic acid) (PLA) and starch in the presence of methylenediphenyl diisocyanate (MDI). As expected, TC improved the elongation at break and toughness and, at the same time, decreased the tensile strength and modulus. However, TC did not significantly affect the coupling effects of MDI on starch and PLA. The tensile strength of the blend with MDI was much greater than the tensile strength without MDI at the same TC level. The tensile properties of the blend changed dramatically as the TC concentration increased from 5 to 12.5%. At a TC concentration of 7.5%, the blend produced desirable elongation and toughness with fairly good tensile strength. (C) 2003 Wiley Periodicals, Inc. [References: 14]
机译：在亚甲基二苯基二异氰酸酯（MDI）存在下，将柠檬酸三乙酯（TC）作为增塑剂添加到聚乳酸（PLA）和淀粉的混合物中。正如预期的那样，TC提高了断裂伸长率和韧性，同时降低了拉伸强度和模量。但是，TC并没有显着影响MDI对淀粉和PLA的偶联作用。在相同的TC水平下，含MDI的共混物的拉伸强度远大于不含MDI的共混物的拉伸强度。当TC浓度从5增加到12.5％时，共混物的拉伸性能发生了显着变化。在7.5％的TC浓度下，共混物产生了理想的伸长率和韧性，并具有相当好的拉伸强度。 （C）2003 Wiley Periodicals，Inc. [参考：14]

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