可降解材料聚乳酸(PLA)具有良好的生物相容性、优异的力学性能,在生物、医药等众多领域得到运用,被称为最具发展潜力的新型材料,但由于其结晶速率慢,加工过程中易产生二次结晶,极大影响了PLA的性能。适量添加异相成核剂可提高PLA的结晶速率,消除二次结晶,有效提高PLA结晶度并改善其性能,综述了近年来用于改善PLA结晶性能的三类成核剂,包括有机类、无机类和高分子类,并展望了可降解材料PLA未来的发展趋势。
Poly lactic acid (PLA),which is biodegradable,has good bio-compatibility and excellent mechanical properties.PLA is widely used in biology,medicine and many other fields,which is called “The most promising new material”.Because the crystallization rate of PLA is slow,and it is easy to appear secondary crystal in the process,which can greatly affect the property of PLA.The addition of appropriate nucleating agent can increase the crystallization rate of PLA,and partly remove the secondary crystal,the nucleating agent can effectively improve the crystallize property and performance of PLA.Three kinds of nucleating agents for improving the crystallization properties of PLA in recent years were reviewed.Including organic,inorganic and polymer,and putting forward the degradable material PLA in the future.
[1] Fan Y Q,Yu Z Y,Cai H Y,et al.Crystallization behavior and crystallize morphology control of poly (L-lactic acid) through N,N′-bis(benzoyl) sebacic acid dihydrazide[J].Polymer Int,2013,62(8):647-657.
[2] Shive M S,Anderson J M.Biodegradation and biocompatibility of PLA and PLGA microspheres[J].Adv Drug Deliv Rev,2012,64(1):5-24.
[3] Zhou L.Research on flow behaviors and mechanisms of PLLA and PCL nano-composite mel[D].Guangzhou:South China University of Technology,2012.
[4] Rasal R M,Janorkar A V,Hirt D E.Poly (lactic acid) modifications[J].Prog Polym Sci,2010,35(3):338-356.
[5] Georgakilas V,Otyepka M,Bourlinos A B,et al.Functional of graphene:covalent and non-covalent approaches,derivatives and applications[J].Chem Rev,2012,112(11):6156-6214.
[6] Bai H W,Zhang W Y,Deng H,et al.Control of crystal morphology in poly(L-lactic acid) by adding nucleating agent[J].Macro molecules,2011,44(6):1233-1237.
[7] Mallet B,Lamnawar K,Maazouz A.Improvement of blown film extrusion of poly (lactic acid):structure processing-properties relationships[J].Polym Eng Sci,2014,54(4):840-857.
[8] Chen X,Zhao B W,Han P,et al.Temperature and pH-sensitive membrane formed from blends of poly (vinyli-dene fluoride)-graft-poly (N-isopropylacry lamide) and poly (acrylic acid) microgels[J].React Funct Polym,2014,84(5):10-20.
[9] Ratihi S,Kalish J P,Coughlin B.Utilization of oligo (lactic acid) for studies of chain conformation and chain packing in poly (lactic acid)[J].Macro molecules,2011,44(9):3410-3415.
[10] 甄卫军,王文涛,李进.聚乳酸/氧化石墨烯纳米复合材料的结构与性能[J].高分子材料科学工程,2015,31(4):152-157.
[11] 兰江,陈金耀,曹亚,等.聚乳酸/蒙脱土纳米复合材料的力学性能和流变性能[J].高分子材料科学工程,2009,25(7):87-93.
[12] 王劭妤,石坚,郑来云.碳纳米管/PLA复合材料制备及性能[J].复合材料学报,2012,29(6):50-54.
[13] 颜克福,何继敏,李珊珊,等.聚乙二醇/滑石粉共混改性聚乳酸及吹塑薄膜性能的研究[J].塑料工业,2015,43(5):98-101.
[14] 蔡艳华,任莉平.成核剂己二酸二苯甲酰肼对聚乳酸性能的影响[J].高分子材料科学工程,2016,32(8):59-68.
[15] Cai Y H,Tang Y,Zhao L S.Poly(L-lactic acid) with organic nucleating agent N,N,N′-tris (1h-benzotriazole) trimesinic acid ac-ethydrazide:crystallization and melting behavior[J].J Appl Polym Sci,2015,132(32):1-9.
[16] 李向阳,高向华,毛晨曦,等.成核剂TMC-300对聚乳酸结晶的影响[J].塑料工业,2014,42(6):108-111.
[17] 郑海明,马猛,郑期强,等.一种酰胺类成核剂对聚乳酸结晶行为的影响[J].材料科学与工程学报,2016,34(6):941-946.
[18] 杨媛媛,王新龙.核/壳结构PDMS/PMMA纳米粒子改性聚乳酸[J].塑料,2015,44(1):22-25.
[19] 张书洋,陈哲峰,吴枫,等.四臂聚乳酸/线性聚乳酸共混物的结晶行为及机理研究[J].高分子学报,2016,5(5):680-684.
[20] 张荣荣,曹兴罗,卫华,等.淀粉纳米晶/聚乳酸复合材料的制备与性能研究[J].功能材料,2016,41(11):11173-11181.
[21] 刘保健,范洁,王海花.聚乳酸/聚己内酯共混膜的结晶机理[J].高分子材料科学工程,2016,36(1):74-78.
[22] 李红月,卢秀萍,杨华,等.细菌纤维素/聚乳酸互穿网络复合材料的结晶与熔融[J].复合材料学报,2015,32(5):1294-1330.
基金资助
陕西省自然科学基础研究计划项目(2017JQ5071)
PDF
(1153KB)
