左旋聚乳酸(PLLA)是一种生物可降解材料,具有较高的强度和刚性,但脆性大的缺点限制了PLLA的应用。简述了PLLA/热塑性弹性体(TPE)/纳米填料三元共混物的研究进展,通过添加小分子增塑剂或热塑性弹性体改性PLLA的脆性,进一步就三元共混体系特别是共混物的相容性进行了介绍,对三元共混物在结晶性能、流变性能及TPE合成方面的发展方向提出了几点建议。
As a biorenewable,biodegradable and biocompatible polyester,poly (L-lactide)(PLLA) possesses high modulus and stiffness.However,neat PLLA exhibits inherent brittleness and weak notched impact strength,which has been a major drawback for its large-scale commercial applications.The research progress of PLLA,thermoplastic elastomer (TPE) and nanofillers (NFs) ternary blends was reviewed.The modification of PLA with small molecules plasticizer and TPE,the phase behavior of PLLA blending with TPE and NF was also further clarified.The rheological property,crystallization property and TPE synthesis of PLLA/TPE/NFs ternary blends system were three development ways,some suggestions for which were put forwarded at finally.
[1] Kelly S A,Kathleen M S,Marc A H.Toughening polylactide[J].Polymer Reviews,2008,48(7):85-108.
[2] Liu Hongzhi,Zhang Jinwen.Research progress in toughening modification of poly(lactic acid)[J].Journal of Polymer Science Part B:Polymer Physics,2011,49:1051-1083.
[3] Fang Huagao,Jiang Feng,Wu Qianghua,et al.Supertough polylactide materials prepared through in situ reactive blending with PEG-based diacrylate monomer[J].ACS Applied Materials & Interfaces,2014,6(16):13552-13563.
[4] 张义盛,吴德峰,张明.聚己内酯/聚乳酸共混体系的相形态及其流变行为[J].化工学报,2008,59(10):2644-2649.
[5] Nurkhamidah S,Woo E M.Phase-separation-induced single-crystal morphology in poly(L-lactic acid) blended with poly(1,4-butylene adipate) at specific composition[J].The Journal of Physical Chemistry B,2011,115(45):13127-13138.
[6] Liu Zhenwei,Luo Yuanlin,Bai Hongwei,et al.Remarkably enhanced impact toughness and heat resistance of poly(L-lactide)/thermoplastic polyurethane blends by constructing stereocomplex crystallites in the matrix[J].ACS Sustainable Chemistry & Engineering,2016,4(1):111-120.
[7] Zhao Xiaowen,Ye Lin,Coates Phil,et al.Structure and blood compatibility of highly oriented poly(lactic acid)/thermoplastic polyurethane blends produced by solid hot stretching[J].Polymers for Advanced Technologies,2013,24(9):853-860.
[8] Hillmyer M A,Tolman W B.Aliphatic polyester block polymers:renewable,degradable,and sustainable[J].Accounts of Chemical Research,2014,47(8):2390-2396.
[9] Lu Xiang,Wei Xiaosong,Huang Jintao,et al.Supertoughened poly(lactic acid)/polyurethane blend material by in situ reactive interfacial compatibilization via dynamic vulcanization[J].Ind Eng Chem Res,2014,53(44):17386-17393.
[10] Balazs I,Daniel B,Attila D,et al.Structure,properties and interfacial interactions in poly (lactic acid)/polyurethane blends prepared by reactive processing[J].European Polymer Journal,2013,49(10):3104-3113.
[11] 杨继年,丁国新,王周锋,等.非生物降解热塑性弹性体在增韧聚乳酸中的应用[J].机械工程材料,2014,38(5):1-5.
[12] Raquez J M,Habibi Y,Murariu M,et al.Polylactide(PLA)-based nanocomposites[J].Progress in Polymer Science,2013,38(11):1504-1542.
[13] Chakrit S,Sorawit D,Komkrit S,et al.Electrolytically exfoliated graphene-polylactide-based bioplastic with high elastic performance[J].Journal of Polymer Science Part B:Polymer Physics,2015,132(6):DOI 41439.
[14] Li Y,Shimizu H.Conductive PVDF/PA6/CNTs nanocomposites fabricated by dual formation of cocontinuous and nanodispersion structures[J].Macromolecules,2008,41(14):5339-5344.
[15] Zou Hao,Wang Ke,Zhang Qin,et al.A change of phase morphology in poly(p-phenylene sulfide)/polyamide 66 blends induced by adding multi-walled carbon nanotubes[J].Polymer,2006,47(22):7821-7826.
[16] Wu Defeng,Zhang Yisheng,Zhang Ming,et al.Selective localization of multiwalled carbon nanotubes in poly(epsilon-caprolactone)/polylactide blend[J].Biomacromolecules,2009,10(2):417-424.
[17] Goldfl A,Kasaliwal G,Potschke P.Selective localization and migration of multiwalled carbon nanotubes in blends of polycarbonate and poly(styrene-acrylonilrile)[J].Macromolecular Rapid Communications,2009,30(6):423-429.
[18] Xu Zhaohua,Zhang Yaqiong,Wang Zhigang,et al.Enhancement of electrical conductivity by changing phase morphology for composites consisting of polylactide and poly(ε-caprolactone) filled with acid-oxidized multiwalled carbon nanotubes[J].ACS Applied Materials & Interfaces,2011,3(12):4858-4864.
[19] Vincent O,Suprakas S R,Rotimi S.Effect of nanoclay loading on the thermal and mechanical properties of biodegradable polylactide/poly[(butylene succinate)-co-adipate] blend composites[J].ACS Applied Materials & Interfaces,2012,4(5):2395-2405.
[20] Raja M,Ryu S H,Shanmugharaj A M.Thermal,mechanical and electroactive shape memory properties of polyurethane (PU)/poly (lactic acid)(PLA)/CNT nanocomposites[J].European Polymer Journal,2013,49(11):3492-3500.
[21] Shi Yunyun,Zhang Wenbin,Yang Jinghui,et al.Super toughening of the poly(L-lactide)/thermoplastic polyurethane blends by carbon nanotubes[J].RSC Advances,2013,48(3):26271-26282.
[22] 何琪,俞炜,周持兴.高浓度不相容聚合物共混体系相形态与流变性能研究[J].高分子学报,2010(1):114-119.
[23] Wu Defeng,Wu Liang,Zhou Weidong,et al.Relations between the aspect ratio of carbon nanotubes and the formation of percolation networks in biodegradable polylactide/carbon nanotube composites[J].Journal of Polymer Science Part B:Polymer Physics,2010,48(4):479-489.
[24] Li J,Ma P C,Chow W S,et al.Correlations between percolation threshold,dispersion state and aspect ratio of carbon nanotube[J].Advanced Functional Materials,2007,17:3207-3215.
[25] Niu Yanhua,Yang Liang,Shimizu Katsumi,et al.Investigation on phase separation kinetics of polyolefin blends through combination of viscoelasticity and morphology[J].The Journal of Physical Chemistry B,2009,113(26):8820-8827.
[26] Wang Liangyan,Jing Xiabin,Cheng Haibo,et al.Rheology and crystallization of long-chain branched poly(L-lactide)s with controlled branch length[J].Industrial & Engineering Chemistry Research,2012,51(33):10731-10741.
[27] Park S D,Todo M,Arakawa K,et al.Effect of crystallinity and loading-rate on mode I fracture behavior of poly(lactic acid)[J].Polymer,2006,47(4):1357-1363.
[28] Kulinski Z,Piorkowska E.Crystallization,structure and properties of plasticized poly(L-lactide)[J].Polymer,2005,46(23):10290-10300.
[29] 蒋峰.新型接枝型聚合物热塑性弹性体的合成及其结构与性能研究[D].合肥:中国科学技术大学,2015.
基金资助
国家自然科学基金(51302107);广东省自然科学基金(2015A030313804);广东省高等学校优秀青年教师培养计划(YQ2015225和YQ2015226);绿色功能材料创新平台(江财工[2016]143)
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