Poly L-Lactic Acid Blends

Lee JW, Gardella JA. Simultaneous time-of-flight secondary ion MS quantitative analysis of drag surface concentration and polymer degradation kinetics in biodegradable poly(L-lactic acid) blends. Anal Chem 2003 75(13) 2950-2958. 

G. Singh, N. Kaur, H. Bhunia, P.K. Bajpai, U.K. Mandal, Degradation behaviors of linear low-density polyethylene and poly(L-lactic acid) blends. J. Appl. Polym. Sci. 124, 1993-1998 (2012)... 

Katada, A., Buys, Y R, Tominaga, Y, Asai, S., and Sumita, M. 2005. Relationship between electrical resistivity and particle dispersion state for carbon black filled poly (ethylene-co-vinyl acetate)/poly(L-lactic acid) blend. Colloid and Polymer Science 284 134-141. 

Pezzin, A.P.T., Alberda van Eckenstein, G.O.R., Zavaglia, C.A.C., ten Brinke, G., Duek, E.A.R., 2003. Poly(para-dioxanone) and poly(L-lactic acid) blends thermal, mechanical, and morphological properties. J. Appl. Polym. Sci. 88, 2744—2755. 

Unger M, Sato H, Ozaki Y, Fischer D, Siesler HW. Temperature-dependent Fourier transform infrared spectroscopy and Raman mapping spectroscopy of phase-separation in a poly(3-hydroxybutyrate)-poly(L-lactic acid) blend. Appl Spectrosc 2013 67 141-148. 

Furukawa, T, Sato, H., Murakami, R, Zhang, J., Duan, Y. X., Noda, I., Ochiai, S., Ozaki, Y. (2005). Structure, dispersibility, and crystallinity of poly(hydroxybutyrate)/poly(L-lactic acid) blends studied by FT-IR microspectroscopy and differential scanning calorimetry, Macromol., 38,6445-6554. 

Bicontinuous Controlled-Release Matrices Composed of Poly(D,L-lactic acid) Blended with Ethylene—Vinyl Acetate Copolymer... 

T. O. Park, S. Cohen, and R. Langer, Controlled protein release from polyethyleneimine-coated poly(l-lactic acid)/pluronic blend matrices, Pharm. Res, 9, 37 (1992). 

Park, T. G. Cohen, S. Langer, R., Poly (l-lactic acid)/Pluronic blends Characterization of phase separation behavior, degradation, and morphology and use as protein-releasing matrices. Macromolecules 1992, 25, 116-122... 

Tsuneizumi et al. [13] studied the chemical recycling of poly(lactic acid)-based polymer blends using environmentally benign catalysts, clay catalysts, and enzymes. Poly(L-lactic acid) (PLLA)-based polymer blends (e.g., PLLA/polyethylene [PE] and PLLA/poly(butylenes succinate) [PBS]) were degraded into repolymerizable oligomer. 

Tsuji, H. and Horikawa, G. (2007) Porous biodegradable polyester blends of poly(L-lactic acid) and poly(s-caprolactone) physical properties, morphology, and biodegradation. Polymer International, 56, 258-266. 

Park, J.W. and Im, S.S. (2002) Phase behavior and morphology in blends of poly(L-lactic acid) and poly(butylene succinate). Journal of Applied Polymer Science, 86 (3), 647-655. 

Tohru T, Nobuo O, Koji N, Takashi O (2003) Environmental stress cracking of poly(butylene succinate)/ceUulose triacetate blend films. J Appl Polym Sci 87 510-515 Tomita K, KuraM Y, Nagai K (1999) Isolation of thermophiles degradating poly(L-lactic acid). J Biosci Bioeng 87 752-755... 

Fig. 8 Crystallization of stereocomplex PLA by blending poly(D-lactic acid) with poly(L-lactic acid) to form nucleating sites (Tsuji H. 2005)...

Figure 12.4 A stent prototype made of a poly(L-lactic acid)(PLLA)/poly(4-hydroxybutyrate) blend. The stent is shown before (top) and after...

The blended composites made of poly-L-lactic acid (PLLA)/poly-DL-lactic acid (PDLLA) and PLLA/PCL were compared for their mechanical properties [73]. In comparison with PLLA/PDLLA composites, PLLA/PCL composites have weaker mechanical properties, such as elastic modulus, yield strength, and ultimate strength. One approach of preparing these composites involves the use of methylene chloride solutions [73]. The mixed solution of PLA, PLLA, and PDLLA was poured into Teflon trays for vaporization of solvent. The composite laminates can be manufactured using the compression molding technique. 

P, and Pivsa-Art, S. (2011) Preparation of polymer blends between poly (L-lactic acid), poly (butylene succinate-co-adipate) and poly (butylene adipate-co-terephthalate) for blow film industrial application. Energy Procedia, 9, 581-588. 

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