通过开环聚合,合成不同比例的ε-己内酯(ε-CL)与L-丙交酯(L-LA)的无规共聚物P(CL/LLA).将上述共聚物P(CL/LLA)与聚乳酸(PLLA)共混,制备了PLA/P (CL/LLA)共混材料.并对其相容性、热性能、力学性能进行了研究.结果表明,共聚物P(CL/LLA)与PLA相容性与共聚物中LA单元含量和链段的平均长度有密切关系,P(CL/LLA)中LA链段平均长度达到3.4以上时,可以与PLA很好的相互作用.同时共聚物P(CL/LLA)中—CL—链段有很好的柔性,可以很好的改善PLLA的韧性,使PLLA材料的断裂伸长率达到500％以上.
参考文献
| [1] | Flieger M;Kantorova M;Prell A;Rezanka T;Votruba J.Biodegradable plastics from renewable sources [Review][J].Folia microbiologica,20031(1):27-44. |
| [2] | Philip S;Keshavarz T;Roy I.Polyhydroxyalkanoates: biodegradable polymers with a range of applications[J].Journal of Chemical Technology & Biotechnology,20073(3):233-247. |
| [3] | Vink ETH.;Rabago KR.;Glassner DA.;Gruber PR..Applications of life cycle assessment to NatureWorks (TM) polylactide (PLA) production[J].Polymer Degradation and Stability,20033(3):403-419. |
| [4] | JACOBSEN S.;FRITZ H.G..Plasticizing Polylactide-The Effect of Different Plasticizers on the Mechanical Properties[J].Polymer engineering and science,1999JULY(JULY):1303-1310. |
| [5] | 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,200123(23):3197-3211. |
| [6] | Pierre Sarazin;Gang Li;William J. Orts.Binary and ternary blends of polylactide, polycaprolactone and thermoplastic starch[J].Polymer: The International Journal for the Science and Technology of Polymers,20082(2):599-609. |
| [7] | Ramiro Dell'Erba;Mario Malinconico;Giovanni Maglio;Anna Migliozzi.Immiscible polymer blends of semicrystalline biocompatible components:thermal properties and phase morphology analysis of PLLA/PCL blends[J].Polymer: The International Journal for the Science and Technology of Polymers,200118(18):7831-7840. |
| [8] | Lopez-Rodriguez N;Lopez-Arraiza A;Meaurio E;Sarasua JR.Crystallization, morphology, and mechanical behavior of polylactide/poly(epsilon-caprolactone) blends[J].Polymer engineering and science,20069(9):1299-1308. |
| [9] | 陈和春;张丽芳;杨德娟;陈栋梁;徐梁;熊左春;熊成东.DL-乳酸-ε-己内酯无规共聚物改性聚DL-乳酸[J].合成化学,2008(1):19-23. |
| [10] | Ural E;Kesenci K;Fambri L;Migliaresi C;Piskin E.Poly(D,L-lactide/epsilon-caprolactone)/hydroxyapatite composites.[J].Biomaterials,200021(21):2147-2154. |
| [11] | Kreiser-Saunders I.;Kricheldorf HR..Polylactones, 39 - Zn lactate-catalyzed copolymerization of L-lactide with glycolide or epsilon-caprolactone[J].Macromolecular chemistry and physics,19986(6):1081-1087. |
| [12] | Hans R.Kricheldorf;Kirstin Bornhorst;Heiko Hachmann-Thiessen.Bismuth(III)n-Hexanoate and Tin(II)2-Ethylhexanoate Initiated Copolymerizations of epsilon-Caprolactone and L-Lactide[J].Macromolecules,200512(12):5017-5024. |
| [13] | Stassin F;Jerome R.Polymerization of (L,L)-lactide and copolymerization with B-caprolactone initiated by dibutyltin dimethoxide in supercritical carbon dioxide[J].Journal of Polymer Science, Part A. Polymer Chemistry,200513(13):2777-2789. |
| [14] | Nomura, N;Akita, A;Ishii, R;Mizuno, M.Random Copolymerization of epsilon-Caprolactone with Lactide Using a Homosalen-Al Complex[J].Journal of the American Chemical Society,20106(6):1750-1751. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%