PDF (1280K)
摘要
采用熔融共混法将2种增塑剂柠檬酸三丁酯(TBC)、环己烷1,2-二甲酸二异壬酯(DINCH)和助剂蒙脱土(DK-2)按不同配合比与聚乳酸(PLA)混合,制备了一种既有较高断裂伸长率又有较高玻璃化转变温度(Tg)的改性PLA材料。研究结果表明,选用2种增塑剂(TBC、DINCH)共混使用,它们能相互促进,在DINCH用量为10%(wt,质量分数)、TBC用量为6%(wt,质量分数),DK-2用量为2%(wt,质量分数)条件下,改性PLA材料的断裂伸长率达到150%,Tg达到48.7℃,拓宽了PLA的应用领域。
Abstract
The modified-PLA material was prepared by a melt blending method,mixted with different contents such as tributyl citrate (TBC),di (isononyl) cyclohexane-1,2-dicarboxylate (DINCH) and organic montmorillonite (DK-2),which had high elongation at break and glass-transition temperation (Tg).The results showed that TBC and DINCH could promote each other using them together.When DINCH content was 10% (wt,mass fraction),TBC content was 6% (wt,mass fraction) and DK-2 content was 2% (wt,mass fraction),the elongation at break and Tg of modified PLA were 150% and 48.7℃,respectively.Therefore,the modified PLA material could broaden the scope of its application field.
关键词
聚乳酸
/
增塑剂
/
蒙脱土(DK-2)
/
玻璃化转变温度(Tg)
Key words
PLA
/
plasticizer
/
montmorillonite (DK-2)
/
glass transition temperature (Tg)
增塑剂对聚乳酸玻璃化转变温度影响的研究[J].
化工新型材料, 2019, 47(10): 203-206 DOI:
[1] Nieddu E,Mazzucco L,Gentile P,et al.Preparation and biodegradation of clay composites of PLA[J].Journal of Reactive & Functional Polymers,2009,69(6):371-379.
[2] Liu H Z,Guo L,Guo X J,et al.Effects of reactive blending temperature on impact toughness of poly(lactic acid)ternary blends[J].Journal of Polymer,2012,53(2):272-276.
[3] Emilie P,Eliane E,René F.Effect of an organo-modified montmorillonite on PLA crystallization and gas barrier properties[J].Journal of Applied Clay Science,2011,53(1):58-65.
[4] 何江川,李世君,谢飞,等.PLA-PPC-淀粉的溶液共混改性[J].化工新型材料,2010,38(7):78-81.
[5] 王建清,李飞,金政伟,等.PHA/PLA生物降解共混膜的制备[J].包装工程,2011,32(1):36-39.
[6] Wang N,Zhang X X,Ma X F,et al.Influence of carbon black on the properties of plasticized poly(lactic acid)composites[J].Journal of Polymer Degradation and Stability,2008,93(6):1044-1052.
[7] Li B,Dong F X,Wang X L,et al.Organically modified rectorite toughened poly(lactic acid):nanostructures,crystallization and mechanical properties[J].Journal of European Polymer Journal,2009,45(11):2996-3003.
[8] 王如寅.聚乳酸增韧改性及其机理研究[D].上海:上海交通大学,2009.
[9] 郭少华.柔性聚乳酸薄膜的研制[D].成都:四川大学,2007.
[10] Fatima H,Jean-Marie R,Frédéric A,et al.New development on plasticized poly(lactide):chemical grafting of citrate on PLA by reactive extrusion[J].Journal of European Polymer Journal,2012,48(2):404-415.
[11] Chen B K,Shen C H,Chen S C,et al.Ductile PLA modified with methacryloyloxyalkyl isocyanate improves mechanical properties[J].Journal of Polymer,2010,51(21):4667-4672.
[12] Jong W R,Seok I H,Chang S H.Tensile,water vapor barrier and antimicrobial properties of PLA/nanoclay composite films[J].Journal of LWT-Food Science and Technology,2009,42(2):612-617.
[13] Arvind K J,Amit K G,Neeraj M,et al.PEG-PLA-PEG block copolymeric nanoparticles for oral immunization against hepatitis[J].International Journal of Pharmaceutics,2010,387(2):253-262.
[14] Piorkowska E,Kulinski Z,Galeski A,et al.Plasticization of semicrystalline poly(l-lactide)with poly(propylene glycol)[J].Journal of Polymer,2006,47(20):7178-7188.
基金资助
西安市科技局科技计划项目(NC08018)
