改性纳米MgO/PLLA复合薄膜的制备及性能

复合材料学报, 2014, 31(6): 1452-1456.

改性纳米MgO/PLLA复合薄膜的制备及性能

曹秀香 ^1, , 张晶 ^2, , 王亮 ^3, , 杨进军 ^4, , 陈民芳 ^5,

1.天津理工大学材料学院,天津,300384

2.天津理工大学材料学院,天津,300384

3.天津理工大学材料学院,天津,300384

4.天津理工大学材料学院,天津,300384

5.天津理工大学材料学院,天津300384;天津市光电显示材料与器件重点实验室,天津300384;显示材料与光电器件省部共建教育部重点实验室,天津300384

基金项目: 国家自然科学基金(51371126) 天津市高等学校科技发展基金(20110301)

关键词：左旋聚乳酸 , MgO纳米颗粒 , 复合薄膜 , 力学性能 , DL-苹果酸

Preparation and properties of modified MgO nanoparticles/PLLA composite films

Keywords： poly (L-lactic acid) , MgO nanoparticles , composite films , mechanical property , DL-malic acid

为了改善左旋聚乳酸(PLLA)的降解性,采用溶液共混法将PLLA和MgO纳米颗粒(MgO-NPs)进行复合,制备了一种具有良好力学性能的骨修复复合材料.结果显示:改性MgO纳米颗粒(g-MgO-NPs)在PL-LA基体中的分散效果及界面结合性比未改性的好.4％(质量比)g-MgO-NPs的添加量使薄膜的拉伸强度从10.6 MPa增大到30.1 MPa,断裂伸长率从71％减小为59％,并使薄膜降解后的pH值趋于稳定,基本接近生理盐水的pH值.由此表明:g-MgO-NPs在一定程度上能改善聚乳酸复合膜的降解性及其力学性能.

参考文献

[1]	Albertsson A C;Varma I K.Porous scaffolds from high molecular weight polyesters synthesized via enzyme-catalyzed ring-opening polymerization[J].Biomacromolecules,20067(09):2531-2538.
[2]	Shuai C J;Feng P;Nie Y.Nano-hydroxyapatite improves the properties of β-tricalcium phosphate bone scaffolds[J].International Journal of Applied Ceramic Technology,201310(06):1003-1013.
[3]	Shikinami Y;Okuno M.Bioresorbable devices made of forged composites of hydroxyapatite (HA) particles and poly L-lactide (PLLA).Part Ⅱ:practical properties of miniscrews and miniplates[J].BIOMATERIALS,200122(23):3197-3211.
[4]	Rakovsky A;Gutmanas E Y;Gotman I.Ca-deficient hydroxyapatite/polylactide nanocomposites with chemically modified interfaces by high pressure consolidation at room temperature[J].Journal of Materials Science,201045(23):6339-6344.
[5]	Li L;Lin C;Chen A Z.Preparation and characteristics of novel poly-L-lactide (PLLA)/β-calcium metaphos phate (β-CMP) fracture fixation composite rod[J].Journal of Materials Research,200722(12):3324-3329.
[6]	Gandhi S;Abiramipriya P;Pooja N.Synthesis and characterizations of nano sized MgO and its nano composite with poly(vinyl alcohol)[J].JOURNAL OF NON-CRYSTALLINE SOLIDS,2011357(01):181-185.
[7]	WitteF;Fischer J;NellesenJ.In vitro and in vivo corrosion measurements of magnesium alloys[J].BIOMATERIALS,200627(07):1013-1018.
[8]	Ma F;Lu X L;Wang Z M.Nanocomposites of poly(L-lactide) and surface modied magnesia nanoparticles:Fabrication,mechanical property and biodegradability[J].Journal of Physics and Chemistry of Solids,201172(02):111-116.
[9]	回瑞华;关崇新;侯冬岩.羧酸及其盐红外光谱特性的研究[J].鞍山师范学院学报,20013(01):95-98.
[10]	董奇伟.聚乳酸降解性能研究进展[J].塑料制造,2011(03):66-69.

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改性纳米MgO/PLLA复合薄膜的制备及性能

Preparation and properties of modified MgO nanoparticles/PLLA composite films

参考文献